import sys import py from rpython.jit.codewriter import heaptracker from rpython.jit.codewriter.effectinfo import EffectInfo from rpython.jit.codewriter.jitcode import JitCode, SwitchDictDescr from rpython.jit.metainterp import history, compile, resume, executor, jitexc from rpython.jit.metainterp.heapcache import HeapCache from rpython.jit.metainterp.history import (Const, ConstInt, ConstPtr, ConstFloat, Box, TargetToken) from rpython.jit.metainterp.jitprof import EmptyProfiler from rpython.jit.metainterp.logger import Logger from rpython.jit.metainterp.optimizeopt.util import args_dict from rpython.jit.metainterp.resoperation import rop from rpython.rlib import nonconst, rstack from rpython.rlib.debug import debug_start, debug_stop, debug_print, make_sure_not_resized from rpython.rlib.jit import Counters from rpython.rlib.objectmodel import we_are_translated, specialize from rpython.rlib.unroll import unrolling_iterable from rpython.rtyper.lltypesystem import lltype, rclass, rffi # ____________________________________________________________ def arguments(*args): def decorate(func): func.argtypes = args return func return decorate # ____________________________________________________________ class MIFrame(object): debug = False def __init__(self, metainterp): self.metainterp = metainterp self.registers_i = [None] * 256 self.registers_r = [None] * 256 self.registers_f = [None] * 256 def setup(self, jitcode, greenkey=None): assert isinstance(jitcode, JitCode) self.jitcode = jitcode self.bytecode = jitcode.code # this is not None for frames that are recursive portal calls self.greenkey = greenkey # copy the constants in place self.copy_constants(self.registers_i, jitcode.constants_i, ConstInt) self.copy_constants(self.registers_r, jitcode.constants_r, ConstPtr) self.copy_constants(self.registers_f, jitcode.constants_f, ConstFloat) self._result_argcode = 'v' # for resume.py operation self.parent_resumedata_snapshot = None self.parent_resumedata_frame_info_list = None # counter for unrolling inlined loops self.unroll_iterations = 1 @specialize.arg(3) def copy_constants(self, registers, constants, ConstClass): """Copy jitcode.constants[0] to registers[255], jitcode.constants[1] to registers[254], jitcode.constants[2] to registers[253], etc.""" if nonconst.NonConstant(0): # force the right type constants[0] = ConstClass.value # (useful for small tests) i = len(constants) - 1 while i >= 0: j = 255 - i assert j >= 0 registers[j] = ConstClass(constants[i]) i -= 1 def cleanup_registers(self): # To avoid keeping references alive, this cleans up the registers_r. # It does not clear the references set by copy_constants(), but # these are all prebuilt constants anyway. for i in range(self.jitcode.num_regs_r()): self.registers_r[i] = None # ------------------------------ # Decoding of the JitCode @specialize.arg(4) def prepare_list_of_boxes(self, outvalue, startindex, position, argcode): assert argcode in 'IRF' code = self.bytecode length = ord(code[position]) position += 1 for i in range(length): index = ord(code[position+i]) if argcode == 'I': reg = self.registers_i[index] elif argcode == 'R': reg = self.registers_r[index] elif argcode == 'F': reg = self.registers_f[index] else: raise AssertionError(argcode) outvalue[startindex+i] = reg def _put_back_list_of_boxes(self, outvalue, startindex, position): code = self.bytecode length = ord(code[position]) position += 1 for i in range(length): index = ord(code[position+i]) box = outvalue[startindex+i] if box.type == history.INT: self.registers_i[index] = box elif box.type == history.REF: self.registers_r[index] = box elif box.type == history.FLOAT: self.registers_f[index] = box else: raise AssertionError(box.type) def get_current_position_info(self): return self.jitcode.get_live_vars_info(self.pc) def get_list_of_active_boxes(self, in_a_call): if in_a_call: # If we are not the topmost frame, self._result_argcode contains # the type of the result of the call instruction in the bytecode. # We use it to clear the box that will hold the result: this box # is not defined yet. argcode = self._result_argcode index = ord(self.bytecode[self.pc - 1]) if argcode == 'i': self.registers_i[index] = history.CONST_FALSE elif argcode == 'r': self.registers_r[index] = history.CONST_NULL elif argcode == 'f': self.registers_f[index] = history.CONST_FZERO self._result_argcode = '?' # done # info = self.get_current_position_info() start_i = 0 start_r = start_i + info.get_register_count_i() start_f = start_r + info.get_register_count_r() total = start_f + info.get_register_count_f() # allocate a list of the correct size env = [None] * total make_sure_not_resized(env) # fill it now for i in range(info.get_register_count_i()): index = info.get_register_index_i(i) env[start_i + i] = self.registers_i[index] for i in range(info.get_register_count_r()): index = info.get_register_index_r(i) env[start_r + i] = self.registers_r[index] for i in range(info.get_register_count_f()): index = info.get_register_index_f(i) env[start_f + i] = self.registers_f[index] return env def replace_active_box_in_frame(self, oldbox, newbox): if isinstance(oldbox, history.BoxInt): count = self.jitcode.num_regs_i() registers = self.registers_i elif isinstance(oldbox, history.BoxPtr): count = self.jitcode.num_regs_r() registers = self.registers_r elif isinstance(oldbox, history.BoxFloat): count = self.jitcode.num_regs_f() registers = self.registers_f else: assert 0, oldbox for i in range(count): if registers[i] is oldbox: registers[i] = newbox if not we_are_translated(): for b in registers[count:]: assert not oldbox.same_box(b) def make_result_of_lastop(self, resultbox): got_type = resultbox.type if not we_are_translated(): typeof = {'i': history.INT, 'r': history.REF, 'f': history.FLOAT} assert typeof[self.jitcode._resulttypes[self.pc]] == got_type target_index = ord(self.bytecode[self.pc-1]) if got_type == history.INT: self.registers_i[target_index] = resultbox elif got_type == history.REF: #debug_print(' ->', # llmemory.cast_ptr_to_adr(resultbox.getref_base())) self.registers_r[target_index] = resultbox elif got_type == history.FLOAT: self.registers_f[target_index] = resultbox else: raise AssertionError("bad result box type") # ------------------------------ for _opimpl in ['int_add', 'int_sub', 'int_mul', 'int_floordiv', 'int_mod', 'int_lt', 'int_le', 'int_eq', 'int_ne', 'int_gt', 'int_ge', 'int_and', 'int_or', 'int_xor', 'int_rshift', 'int_lshift', 'uint_rshift', 'uint_lt', 'uint_le', 'uint_gt', 'uint_ge', 'uint_floordiv', 'float_add', 'float_sub', 'float_mul', 'float_truediv', 'float_lt', 'float_le', 'float_eq', 'float_ne', 'float_gt', 'float_ge', 'ptr_eq', 'ptr_ne', 'instance_ptr_eq', 'instance_ptr_ne', ]: exec py.code.Source(''' @arguments("box", "box") def opimpl_%s(self, b1, b2): return self.execute(rop.%s, b1, b2) ''' % (_opimpl, _opimpl.upper())).compile() for _opimpl in ['int_add_ovf', 'int_sub_ovf', 'int_mul_ovf']: exec py.code.Source(''' @arguments("box", "box") def opimpl_%s(self, b1, b2): self.metainterp.clear_exception() resbox = self.execute(rop.%s, b1, b2) self.make_result_of_lastop(resbox) # same as execute_varargs() if not isinstance(resbox, Const): self.metainterp.handle_possible_overflow_error() return resbox ''' % (_opimpl, _opimpl.upper())).compile() for _opimpl in ['int_is_true', 'int_is_zero', 'int_neg', 'int_invert', 'cast_float_to_int', 'cast_int_to_float', 'cast_float_to_singlefloat', 'cast_singlefloat_to_float', 'float_neg', 'float_abs', 'cast_ptr_to_int', 'cast_int_to_ptr', 'convert_float_bytes_to_longlong', 'convert_longlong_bytes_to_float', 'int_force_ge_zero', ]: exec py.code.Source(''' @arguments("box") def opimpl_%s(self, b): return self.execute(rop.%s, b) ''' % (_opimpl, _opimpl.upper())).compile() @arguments("box") def opimpl_int_same_as(self, box): # for tests only: emits a same_as, forcing the result to be in a Box resbox = history.BoxInt(box.getint()) self.metainterp._record_helper_nonpure_varargs( rop.SAME_AS, resbox, None, [box]) return resbox @arguments("box") def opimpl_ptr_nonzero(self, box): return self.execute(rop.PTR_NE, box, history.CONST_NULL) @arguments("box") def opimpl_ptr_iszero(self, box): return self.execute(rop.PTR_EQ, box, history.CONST_NULL) @arguments("box") def opimpl_mark_opaque_ptr(self, box): return self.execute(rop.MARK_OPAQUE_PTR, box) @arguments("box", "box") def opimpl_record_known_class(self, box, clsbox): from rpython.rtyper.lltypesystem import llmemory if self.metainterp.heapcache.is_class_known(box): return adr = clsbox.getaddr() bounding_class = llmemory.cast_adr_to_ptr(adr, rclass.CLASSTYPE) if bounding_class.subclassrange_max - bounding_class.subclassrange_min == 1: # precise class knowledge, this can be used self.execute(rop.RECORD_KNOWN_CLASS, box, clsbox) self.metainterp.heapcache.class_now_known(box) @arguments("box") def _opimpl_any_return(self, box): self.metainterp.finishframe(box) opimpl_int_return = _opimpl_any_return opimpl_ref_return = _opimpl_any_return opimpl_float_return = _opimpl_any_return @arguments() def opimpl_void_return(self): self.metainterp.finishframe(None) @arguments("box") def _opimpl_any_copy(self, box): return box opimpl_int_copy = _opimpl_any_copy opimpl_ref_copy = _opimpl_any_copy opimpl_float_copy = _opimpl_any_copy @arguments("box") def _opimpl_any_push(self, box): self.pushed_box = box opimpl_int_push = _opimpl_any_push opimpl_ref_push = _opimpl_any_push opimpl_float_push = _opimpl_any_push @arguments() def _opimpl_any_pop(self): box = self.pushed_box self.pushed_box = None return box opimpl_int_pop = _opimpl_any_pop opimpl_ref_pop = _opimpl_any_pop opimpl_float_pop = _opimpl_any_pop @arguments("label") def opimpl_catch_exception(self, target): """This is a no-op when run normally. We can check that last_exc_value_box is None; it should have been set to None by the previous instruction. If the previous instruction raised instead, finishframe_exception() should have been called and we would not be there.""" assert self.metainterp.last_exc_value_box is None @arguments("label") def opimpl_goto(self, target): self.pc = target @arguments("box", "label") def opimpl_goto_if_not(self, box, target): switchcase = box.getint() if switchcase: opnum = rop.GUARD_TRUE else: opnum = rop.GUARD_FALSE self.metainterp.generate_guard(opnum, box) if not switchcase: self.pc = target @arguments("box", "label") def opimpl_goto_if_not_int_is_true(self, box, target): condbox = self.execute(rop.INT_IS_TRUE, box) self.opimpl_goto_if_not(condbox, target) @arguments("box", "label") def opimpl_goto_if_not_int_is_zero(self, box, target): condbox = self.execute(rop.INT_IS_ZERO, box) self.opimpl_goto_if_not(condbox, target) for _opimpl in ['int_lt', 'int_le', 'int_eq', 'int_ne', 'int_gt', 'int_ge', 'ptr_eq', 'ptr_ne']: exec py.code.Source(''' @arguments("box", "box", "label") def opimpl_goto_if_not_%s(self, b1, b2, target): condbox = self.execute(rop.%s, b1, b2) self.opimpl_goto_if_not(condbox, target) ''' % (_opimpl, _opimpl.upper())).compile() def _establish_nullity(self, box, orgpc): value = box.nonnull() if value: if not self.metainterp.heapcache.is_class_known(box): self.metainterp.generate_guard(rop.GUARD_NONNULL, box, resumepc=orgpc) else: if not isinstance(box, Const): self.metainterp.generate_guard(rop.GUARD_ISNULL, box, resumepc=orgpc) promoted_box = box.constbox() self.metainterp.replace_box(box, promoted_box) return value @arguments("box", "label", "orgpc") def opimpl_goto_if_not_ptr_nonzero(self, box, target, orgpc): if not self._establish_nullity(box, orgpc): self.pc = target @arguments("box", "label", "orgpc") def opimpl_goto_if_not_ptr_iszero(self, box, target, orgpc): if self._establish_nullity(box, orgpc): self.pc = target @arguments("box", "box", "box") def opimpl_int_between(self, b1, b2, b3): b5 = self.execute(rop.INT_SUB, b3, b1) if isinstance(b5, ConstInt) and b5.getint() == 1: # the common case of int_between(a, b, a+1) turns into just INT_EQ return self.execute(rop.INT_EQ, b2, b1) else: b4 = self.execute(rop.INT_SUB, b2, b1) return self.execute(rop.UINT_LT, b4, b5) @arguments("box", "descr", "orgpc") def opimpl_switch(self, valuebox, switchdict, orgpc): box = self.implement_guard_value(valuebox, orgpc) search_value = box.getint() assert isinstance(switchdict, SwitchDictDescr) try: self.pc = switchdict.dict[search_value] except KeyError: pass @arguments() def opimpl_unreachable(self): raise AssertionError("unreachable") @arguments("descr") def opimpl_new(self, sizedescr): return self.metainterp.execute_new(sizedescr) @arguments("descr") def opimpl_new_with_vtable(self, sizedescr): cpu = self.metainterp.cpu cls = heaptracker.descr2vtable(cpu, sizedescr) return self.metainterp.execute_new_with_vtable(ConstInt(cls)) @arguments("box", "descr") def opimpl_new_array(self, lengthbox, itemsizedescr): return self.metainterp.execute_new_array(itemsizedescr, lengthbox) @specialize.arg(1) def _do_getarrayitem_gc_any(self, op, arraybox, indexbox, arraydescr): tobox = self.metainterp.heapcache.getarrayitem( arraybox, indexbox, arraydescr) if tobox: # sanity check: see whether the current array value # corresponds to what the cache thinks the value is resbox = executor.execute(self.metainterp.cpu, self.metainterp, op, arraydescr, arraybox, indexbox) assert resbox.constbox().same_constant(tobox.constbox()) return tobox resbox = self.execute_with_descr(op, arraydescr, arraybox, indexbox) self.metainterp.heapcache.getarrayitem_now_known( arraybox, indexbox, resbox, arraydescr) return resbox @arguments("box", "box", "descr") def _opimpl_getarrayitem_gc_any(self, arraybox, indexbox, arraydescr): return self._do_getarrayitem_gc_any(rop.GETARRAYITEM_GC, arraybox, indexbox, arraydescr) opimpl_getarrayitem_gc_i = _opimpl_getarrayitem_gc_any opimpl_getarrayitem_gc_r = _opimpl_getarrayitem_gc_any opimpl_getarrayitem_gc_f = _opimpl_getarrayitem_gc_any @arguments("box", "box", "descr") def _opimpl_getarrayitem_raw_any(self, arraybox, indexbox, arraydescr): return self.execute_with_descr(rop.GETARRAYITEM_RAW, arraydescr, arraybox, indexbox) opimpl_getarrayitem_raw_i = _opimpl_getarrayitem_raw_any opimpl_getarrayitem_raw_f = _opimpl_getarrayitem_raw_any @arguments("box", "box", "descr") def _opimpl_getarrayitem_raw_pure_any(self, arraybox, indexbox, arraydescr): return self.execute_with_descr(rop.GETARRAYITEM_RAW_PURE, arraydescr, arraybox, indexbox) opimpl_getarrayitem_raw_i_pure = _opimpl_getarrayitem_raw_pure_any opimpl_getarrayitem_raw_f_pure = _opimpl_getarrayitem_raw_pure_any @arguments("box", "box", "descr") def _opimpl_getarrayitem_gc_pure_any(self, arraybox, indexbox, arraydescr): if isinstance(arraybox, ConstPtr) and isinstance(indexbox, ConstInt): # if the arguments are directly constants, bypass the heapcache # completely resbox = executor.execute(self.metainterp.cpu, self.metainterp, rop.GETARRAYITEM_GC_PURE, arraydescr, arraybox, indexbox) return resbox.constbox() return self._do_getarrayitem_gc_any(rop.GETARRAYITEM_GC_PURE, arraybox, indexbox, arraydescr) opimpl_getarrayitem_gc_i_pure = _opimpl_getarrayitem_gc_pure_any opimpl_getarrayitem_gc_r_pure = _opimpl_getarrayitem_gc_pure_any opimpl_getarrayitem_gc_f_pure = _opimpl_getarrayitem_gc_pure_any @arguments("box", "box", "box", "descr") def _opimpl_setarrayitem_gc_any(self, arraybox, indexbox, itembox, arraydescr): self.metainterp.execute_setarrayitem_gc(arraydescr, arraybox, indexbox, itembox) opimpl_setarrayitem_gc_i = _opimpl_setarrayitem_gc_any opimpl_setarrayitem_gc_r = _opimpl_setarrayitem_gc_any opimpl_setarrayitem_gc_f = _opimpl_setarrayitem_gc_any @arguments("box", "box", "box", "descr") def _opimpl_setarrayitem_raw_any(self, arraybox, indexbox, itembox, arraydescr): self.execute_with_descr(rop.SETARRAYITEM_RAW, arraydescr, arraybox, indexbox, itembox) opimpl_setarrayitem_raw_i = _opimpl_setarrayitem_raw_any opimpl_setarrayitem_raw_f = _opimpl_setarrayitem_raw_any @arguments("box", "descr") def opimpl_arraylen_gc(self, arraybox, arraydescr): lengthbox = self.metainterp.heapcache.arraylen(arraybox) if lengthbox is None: lengthbox = self.execute_with_descr( rop.ARRAYLEN_GC, arraydescr, arraybox) self.metainterp.heapcache.arraylen_now_known(arraybox, lengthbox) return lengthbox @arguments("box", "box", "descr", "orgpc") def opimpl_check_neg_index(self, arraybox, indexbox, arraydescr, orgpc): negbox = self.metainterp.execute_and_record( rop.INT_LT, None, indexbox, history.CONST_FALSE) negbox = self.implement_guard_value(negbox, orgpc) if negbox.getint(): # the index is < 0; add the array length to it lengthbox = self.opimpl_arraylen_gc(arraybox, arraydescr) indexbox = self.metainterp.execute_and_record( rop.INT_ADD, None, indexbox, lengthbox) return indexbox @arguments("box", "descr", "descr", "descr", "descr") def opimpl_newlist(self, sizebox, structdescr, lengthdescr, itemsdescr, arraydescr): sbox = self.opimpl_new(structdescr) self._opimpl_setfield_gc_any(sbox, sizebox, lengthdescr) abox = self.opimpl_new_array(sizebox, arraydescr) self._opimpl_setfield_gc_any(sbox, abox, itemsdescr) return sbox @arguments("box", "descr", "descr", "descr", "descr") def opimpl_newlist_hint(self, sizehintbox, structdescr, lengthdescr, itemsdescr, arraydescr): sbox = self.opimpl_new(structdescr) self._opimpl_setfield_gc_any(sbox, history.CONST_FALSE, lengthdescr) abox = self.opimpl_new_array(sizehintbox, arraydescr) self._opimpl_setfield_gc_any(sbox, abox, itemsdescr) return sbox @arguments("box", "box", "descr", "descr") def _opimpl_getlistitem_gc_any(self, listbox, indexbox, itemsdescr, arraydescr): arraybox = self._opimpl_getfield_gc_any(listbox, itemsdescr) return self._opimpl_getarrayitem_gc_any(arraybox, indexbox, arraydescr) opimpl_getlistitem_gc_i = _opimpl_getlistitem_gc_any opimpl_getlistitem_gc_r = _opimpl_getlistitem_gc_any opimpl_getlistitem_gc_f = _opimpl_getlistitem_gc_any @arguments("box", "box", "box", "descr", "descr") def _opimpl_setlistitem_gc_any(self, listbox, indexbox, valuebox, itemsdescr, arraydescr): arraybox = self._opimpl_getfield_gc_any(listbox, itemsdescr) self._opimpl_setarrayitem_gc_any(arraybox, indexbox, valuebox, arraydescr) opimpl_setlistitem_gc_i = _opimpl_setlistitem_gc_any opimpl_setlistitem_gc_r = _opimpl_setlistitem_gc_any opimpl_setlistitem_gc_f = _opimpl_setlistitem_gc_any @arguments("box", "box", "descr", "orgpc") def opimpl_check_resizable_neg_index(self, listbox, indexbox, lengthdescr, orgpc): negbox = self.metainterp.execute_and_record( rop.INT_LT, None, indexbox, history.CONST_FALSE) negbox = self.implement_guard_value(negbox, orgpc) if negbox.getint(): # the index is < 0; add the array length to it lenbox = self.metainterp.execute_and_record( rop.GETFIELD_GC, lengthdescr, listbox) indexbox = self.metainterp.execute_and_record( rop.INT_ADD, None, indexbox, lenbox) return indexbox @arguments("box", "descr") def _opimpl_getfield_gc_any(self, box, fielddescr): return self._opimpl_getfield_gc_any_pureornot( rop.GETFIELD_GC, box, fielddescr) opimpl_getfield_gc_i = _opimpl_getfield_gc_any opimpl_getfield_gc_r = _opimpl_getfield_gc_any opimpl_getfield_gc_f = _opimpl_getfield_gc_any @arguments("box", "descr") def _opimpl_getfield_gc_pure_any(self, box, fielddescr): if isinstance(box, ConstPtr): # if 'box' is directly a ConstPtr, bypass the heapcache completely resbox = executor.execute(self.metainterp.cpu, self.metainterp, rop.GETFIELD_GC_PURE, fielddescr, box) return resbox.constbox() return self._opimpl_getfield_gc_any_pureornot( rop.GETFIELD_GC_PURE, box, fielddescr) opimpl_getfield_gc_i_pure = _opimpl_getfield_gc_pure_any opimpl_getfield_gc_r_pure = _opimpl_getfield_gc_pure_any opimpl_getfield_gc_f_pure = _opimpl_getfield_gc_pure_any @arguments("box", "box", "descr") def _opimpl_getinteriorfield_gc_any(self, array, index, descr): return self.execute_with_descr(rop.GETINTERIORFIELD_GC, descr, array, index) opimpl_getinteriorfield_gc_i = _opimpl_getinteriorfield_gc_any opimpl_getinteriorfield_gc_f = _opimpl_getinteriorfield_gc_any opimpl_getinteriorfield_gc_r = _opimpl_getinteriorfield_gc_any @specialize.arg(1) def _opimpl_getfield_gc_any_pureornot(self, opnum, box, fielddescr): tobox = self.metainterp.heapcache.getfield(box, fielddescr) if tobox is not None: # sanity check: see whether the current struct value # corresponds to what the cache thinks the value is resbox = executor.execute(self.metainterp.cpu, self.metainterp, rop.GETFIELD_GC, fielddescr, box) assert resbox.constbox().same_constant(tobox.constbox()) return tobox resbox = self.execute_with_descr(opnum, fielddescr, box) self.metainterp.heapcache.getfield_now_known(box, fielddescr, resbox) return resbox @arguments("box", "descr", "orgpc") def _opimpl_getfield_gc_greenfield_any(self, box, fielddescr, pc): ginfo = self.metainterp.jitdriver_sd.greenfield_info if (ginfo is not None and fielddescr in ginfo.green_field_descrs and not self._nonstandard_virtualizable(pc, box, fielddescr)): # fetch the result, but consider it as a Const box and don't # record any operation resbox = executor.execute(self.metainterp.cpu, self.metainterp, rop.GETFIELD_GC_PURE, fielddescr, box) return resbox.constbox() # fall-back return self.execute_with_descr(rop.GETFIELD_GC_PURE, fielddescr, box) opimpl_getfield_gc_i_greenfield = _opimpl_getfield_gc_greenfield_any opimpl_getfield_gc_r_greenfield = _opimpl_getfield_gc_greenfield_any opimpl_getfield_gc_f_greenfield = _opimpl_getfield_gc_greenfield_any @arguments("box", "box", "descr") def _opimpl_setfield_gc_any(self, box, valuebox, fielddescr): tobox = self.metainterp.heapcache.getfield(box, fielddescr) if tobox is valuebox: return self.metainterp.execute_setfield_gc(fielddescr, box, valuebox) # The following logic is disabled because buggy. It is supposed # to be: not(we're writing null into a freshly allocated object) # but the bug is that is_unescaped() can be True even after the # field cache is cleared --- see test_ajit:test_unescaped_write_zero # # if tobox is not None or not self.metainterp.heapcache.is_unescaped(box) or not isinstance(valuebox, Const) or valuebox.nonnull(): # self.execute_with_descr(rop.SETFIELD_GC, fielddescr, box, valuebox) # self.metainterp.heapcache.setfield(box, valuebox, fielddescr) opimpl_setfield_gc_i = _opimpl_setfield_gc_any opimpl_setfield_gc_r = _opimpl_setfield_gc_any opimpl_setfield_gc_f = _opimpl_setfield_gc_any @arguments("box", "box", "box", "descr") def _opimpl_setinteriorfield_gc_any(self, array, index, value, descr): self.metainterp.execute_setinteriorfield_gc(descr, array, index, value) opimpl_setinteriorfield_gc_i = _opimpl_setinteriorfield_gc_any opimpl_setinteriorfield_gc_f = _opimpl_setinteriorfield_gc_any opimpl_setinteriorfield_gc_r = _opimpl_setinteriorfield_gc_any @arguments("box", "descr") def _opimpl_getfield_raw_any(self, box, fielddescr): return self.execute_with_descr(rop.GETFIELD_RAW, fielddescr, box) opimpl_getfield_raw_i = _opimpl_getfield_raw_any opimpl_getfield_raw_f = _opimpl_getfield_raw_any @arguments("box", "descr") def _opimpl_getfield_raw_pure_any(self, box, fielddescr): return self.execute_with_descr(rop.GETFIELD_RAW_PURE, fielddescr, box) opimpl_getfield_raw_i_pure = _opimpl_getfield_raw_pure_any opimpl_getfield_raw_r_pure = _opimpl_getfield_raw_pure_any opimpl_getfield_raw_f_pure = _opimpl_getfield_raw_pure_any @arguments("box", "box", "descr") def _opimpl_setfield_raw_any(self, box, valuebox, fielddescr): self.execute_with_descr(rop.SETFIELD_RAW, fielddescr, box, valuebox) opimpl_setfield_raw_i = _opimpl_setfield_raw_any opimpl_setfield_raw_f = _opimpl_setfield_raw_any @arguments("box", "box", "box", "descr") def _opimpl_raw_store(self, addrbox, offsetbox, valuebox, arraydescr): self.metainterp.execute_raw_store(arraydescr, addrbox, offsetbox, valuebox) opimpl_raw_store_i = _opimpl_raw_store opimpl_raw_store_f = _opimpl_raw_store @arguments("box", "box", "descr") def _opimpl_raw_load(self, addrbox, offsetbox, arraydescr): return self.execute_with_descr(rop.RAW_LOAD, arraydescr, addrbox, offsetbox) opimpl_raw_load_i = _opimpl_raw_load opimpl_raw_load_f = _opimpl_raw_load @arguments("box") def opimpl_hint_force_virtualizable(self, box): self.metainterp.gen_store_back_in_vable(box) @arguments("box", "descr", "descr", "orgpc") def opimpl_record_quasiimmut_field(self, box, fielddescr, mutatefielddescr, orgpc): from rpython.jit.metainterp.quasiimmut import QuasiImmutDescr cpu = self.metainterp.cpu descr = QuasiImmutDescr(cpu, box, fielddescr, mutatefielddescr) self.metainterp.history.record(rop.QUASIIMMUT_FIELD, [box], None, descr=descr) self.metainterp.generate_guard(rop.GUARD_NOT_INVALIDATED, resumepc=orgpc) @arguments("box", "descr", "orgpc") def opimpl_jit_force_quasi_immutable(self, box, mutatefielddescr, orgpc): # During tracing, a 'jit_force_quasi_immutable' usually turns into # the operations that check that the content of 'mutate_xxx' is null. # If it is actually not null already now, then we abort tracing. # The idea is that if we use 'jit_force_quasi_immutable' on a freshly # allocated object, then the GETFIELD_GC will know that the answer is # null, and the guard will be removed. So the fact that the field is # quasi-immutable will have no effect, and instead it will work as a # regular, probably virtual, structure. mutatebox = self.execute_with_descr(rop.GETFIELD_GC, mutatefielddescr, box) if mutatebox.nonnull(): from rpython.jit.metainterp.quasiimmut import do_force_quasi_immutable do_force_quasi_immutable(self.metainterp.cpu, box.getref_base(), mutatefielddescr) raise SwitchToBlackhole(Counters.ABORT_FORCE_QUASIIMMUT) self.metainterp.generate_guard(rop.GUARD_ISNULL, mutatebox, resumepc=orgpc) def _nonstandard_virtualizable(self, pc, box, fielddescr): # returns True if 'box' is actually not the "standard" virtualizable # that is stored in metainterp.virtualizable_boxes[-1] if self.metainterp.heapcache.is_nonstandard_virtualizable(box): return True if box is self.metainterp.forced_virtualizable: self.metainterp.forced_virtualizable = None if (self.metainterp.jitdriver_sd.virtualizable_info is not None or self.metainterp.jitdriver_sd.greenfield_info is not None): standard_box = self.metainterp.virtualizable_boxes[-1] if standard_box is box: return False vinfo = self.metainterp.jitdriver_sd.virtualizable_info if vinfo is fielddescr.get_vinfo(): eqbox = self.metainterp.execute_and_record(rop.PTR_EQ, None, box, standard_box) eqbox = self.implement_guard_value(eqbox, pc) isstandard = eqbox.getint() if isstandard: self.metainterp.replace_box(box, standard_box) return False if not self.metainterp.heapcache.is_unescaped(box): self.emit_force_virtualizable(fielddescr, box) self.metainterp.heapcache.nonstandard_virtualizables_now_known(box) return True def emit_force_virtualizable(self, fielddescr, box): vinfo = fielddescr.get_vinfo() assert vinfo is not None token_descr = vinfo.vable_token_descr mi = self.metainterp tokenbox = mi.execute_and_record(rop.GETFIELD_GC, token_descr, box) condbox = mi.execute_and_record(rop.PTR_NE, None, tokenbox, history.CONST_NULL) funcbox = ConstInt(rffi.cast(lltype.Signed, vinfo.clear_vable_ptr)) calldescr = vinfo.clear_vable_descr self.execute_varargs(rop.COND_CALL, [condbox, funcbox, box], calldescr, False, False) def _get_virtualizable_field_index(self, fielddescr): # Get the index of a fielddescr. Must only be called for # the "standard" virtualizable. vinfo = self.metainterp.jitdriver_sd.virtualizable_info return vinfo.static_field_by_descrs[fielddescr] @arguments("box", "descr", "orgpc") def _opimpl_getfield_vable(self, box, fielddescr, pc): if self._nonstandard_virtualizable(pc, box, fielddescr): return self._opimpl_getfield_gc_any(box, fielddescr) self.metainterp.check_synchronized_virtualizable() index = self._get_virtualizable_field_index(fielddescr) return self.metainterp.virtualizable_boxes[index] opimpl_getfield_vable_i = _opimpl_getfield_vable opimpl_getfield_vable_r = _opimpl_getfield_vable opimpl_getfield_vable_f = _opimpl_getfield_vable @arguments("box", "box", "descr", "orgpc") def _opimpl_setfield_vable(self, box, valuebox, fielddescr, pc): if self._nonstandard_virtualizable(pc, box, fielddescr): return self._opimpl_setfield_gc_any(box, valuebox, fielddescr) index = self._get_virtualizable_field_index(fielddescr) self.metainterp.virtualizable_boxes[index] = valuebox self.metainterp.synchronize_virtualizable() # XXX only the index'th field needs to be synchronized, really opimpl_setfield_vable_i = _opimpl_setfield_vable opimpl_setfield_vable_r = _opimpl_setfield_vable opimpl_setfield_vable_f = _opimpl_setfield_vable def _get_arrayitem_vable_index(self, pc, arrayfielddescr, indexbox): # Get the index of an array item: the index'th of the array # described by arrayfielddescr. Must only be called for # the "standard" virtualizable. indexbox = self.implement_guard_value(indexbox, pc) vinfo = self.metainterp.jitdriver_sd.virtualizable_info virtualizable_box = self.metainterp.virtualizable_boxes[-1] virtualizable = vinfo.unwrap_virtualizable_box(virtualizable_box) arrayindex = vinfo.array_field_by_descrs[arrayfielddescr] index = indexbox.getint() # Support for negative index: disabled # (see codewriter/jtransform.py, _check_no_vable_array). #if index < 0: # index += vinfo.get_array_length(virtualizable, arrayindex) assert 0 <= index < vinfo.get_array_length(virtualizable, arrayindex) return vinfo.get_index_in_array(virtualizable, arrayindex, index) @arguments("box", "box", "descr", "descr", "orgpc") def _opimpl_getarrayitem_vable(self, box, indexbox, fdescr, adescr, pc): if self._nonstandard_virtualizable(pc, box, fdescr): arraybox = self._opimpl_getfield_gc_any(box, fdescr) return self._opimpl_getarrayitem_gc_any(arraybox, indexbox, adescr) self.metainterp.check_synchronized_virtualizable() index = self._get_arrayitem_vable_index(pc, fdescr, indexbox) return self.metainterp.virtualizable_boxes[index] opimpl_getarrayitem_vable_i = _opimpl_getarrayitem_vable opimpl_getarrayitem_vable_r = _opimpl_getarrayitem_vable opimpl_getarrayitem_vable_f = _opimpl_getarrayitem_vable @arguments("box", "box", "box", "descr", "descr", "orgpc") def _opimpl_setarrayitem_vable(self, box, indexbox, valuebox, fdescr, adescr, pc): if self._nonstandard_virtualizable(pc, box, fdescr): arraybox = self._opimpl_getfield_gc_any(box, fdescr) self._opimpl_setarrayitem_gc_any(arraybox, indexbox, valuebox, adescr) return index = self._get_arrayitem_vable_index(pc, fdescr, indexbox) self.metainterp.virtualizable_boxes[index] = valuebox self.metainterp.synchronize_virtualizable() # XXX only the index'th field needs to be synchronized, really opimpl_setarrayitem_vable_i = _opimpl_setarrayitem_vable opimpl_setarrayitem_vable_r = _opimpl_setarrayitem_vable opimpl_setarrayitem_vable_f = _opimpl_setarrayitem_vable @arguments("box", "descr", "descr", "orgpc") def opimpl_arraylen_vable(self, box, fdescr, adescr, pc): if self._nonstandard_virtualizable(pc, box, fdescr): arraybox = self._opimpl_getfield_gc_any(box, fdescr) return self.opimpl_arraylen_gc(arraybox, adescr) vinfo = self.metainterp.jitdriver_sd.virtualizable_info virtualizable_box = self.metainterp.virtualizable_boxes[-1] virtualizable = vinfo.unwrap_virtualizable_box(virtualizable_box) arrayindex = vinfo.array_field_by_descrs[fdescr] result = vinfo.get_array_length(virtualizable, arrayindex) return ConstInt(result) @arguments("jitcode", "boxes") def _opimpl_inline_call1(self, jitcode, argboxes): return self.metainterp.perform_call(jitcode, argboxes) @arguments("jitcode", "boxes2") def _opimpl_inline_call2(self, jitcode, argboxes): return self.metainterp.perform_call(jitcode, argboxes) @arguments("jitcode", "boxes3") def _opimpl_inline_call3(self, jitcode, argboxes): return self.metainterp.perform_call(jitcode, argboxes) opimpl_inline_call_r_i = _opimpl_inline_call1 opimpl_inline_call_r_r = _opimpl_inline_call1 opimpl_inline_call_r_v = _opimpl_inline_call1 opimpl_inline_call_ir_i = _opimpl_inline_call2 opimpl_inline_call_ir_r = _opimpl_inline_call2 opimpl_inline_call_ir_v = _opimpl_inline_call2 opimpl_inline_call_irf_i = _opimpl_inline_call3 opimpl_inline_call_irf_r = _opimpl_inline_call3 opimpl_inline_call_irf_f = _opimpl_inline_call3 opimpl_inline_call_irf_v = _opimpl_inline_call3 @arguments("box", "boxes", "descr", "orgpc") def _opimpl_residual_call1(self, funcbox, argboxes, calldescr, pc): return self.do_residual_or_indirect_call(funcbox, argboxes, calldescr, pc) @arguments("box", "boxes2", "descr", "orgpc") def _opimpl_residual_call2(self, funcbox, argboxes, calldescr, pc): return self.do_residual_or_indirect_call(funcbox, argboxes, calldescr, pc) @arguments("box", "boxes3", "descr", "orgpc") def _opimpl_residual_call3(self, funcbox, argboxes, calldescr, pc): return self.do_residual_or_indirect_call(funcbox, argboxes, calldescr, pc) opimpl_residual_call_r_i = _opimpl_residual_call1 opimpl_residual_call_r_r = _opimpl_residual_call1 opimpl_residual_call_r_v = _opimpl_residual_call1 opimpl_residual_call_ir_i = _opimpl_residual_call2 opimpl_residual_call_ir_r = _opimpl_residual_call2 opimpl_residual_call_ir_v = _opimpl_residual_call2 opimpl_residual_call_irf_i = _opimpl_residual_call3 opimpl_residual_call_irf_r = _opimpl_residual_call3 opimpl_residual_call_irf_f = _opimpl_residual_call3 opimpl_residual_call_irf_v = _opimpl_residual_call3 @arguments("box", "box", "boxes", "descr", "orgpc") def opimpl_conditional_call_i_v(self, condbox, funcbox, argboxes, calldescr, pc): self.do_conditional_call(condbox, funcbox, argboxes, calldescr, pc) opimpl_conditional_call_r_v = opimpl_conditional_call_i_v @arguments("box", "box", "boxes2", "descr", "orgpc") def opimpl_conditional_call_ir_v(self, condbox, funcbox, argboxes, calldescr, pc): self.do_conditional_call(condbox, funcbox, argboxes, calldescr, pc) @arguments("box", "box", "boxes3", "descr", "orgpc") def opimpl_conditional_call_irf_v(self, condbox, funcbox, argboxes, calldescr, pc): self.do_conditional_call(condbox, funcbox, argboxes, calldescr, pc) @arguments("int", "boxes3", "boxes3", "orgpc") def _opimpl_recursive_call(self, jdindex, greenboxes, redboxes, pc): targetjitdriver_sd = self.metainterp.staticdata.jitdrivers_sd[jdindex] allboxes = greenboxes + redboxes warmrunnerstate = targetjitdriver_sd.warmstate assembler_call = False if warmrunnerstate.inlining: if warmrunnerstate.can_inline_callable(greenboxes): portal_code = targetjitdriver_sd.mainjitcode return self.metainterp.perform_call(portal_code, allboxes, greenkey=greenboxes) assembler_call = True # verify that we have all green args, needed to make sure # that assembler that we call is still correct self.verify_green_args(targetjitdriver_sd, greenboxes) # return self.do_recursive_call(targetjitdriver_sd, allboxes, pc, assembler_call) def do_recursive_call(self, targetjitdriver_sd, allboxes, pc, assembler_call=False): portal_code = targetjitdriver_sd.mainjitcode k = targetjitdriver_sd.portal_runner_adr funcbox = ConstInt(heaptracker.adr2int(k)) return self.do_residual_call(funcbox, allboxes, portal_code.calldescr, pc, assembler_call=assembler_call, assembler_call_jd=targetjitdriver_sd) opimpl_recursive_call_i = _opimpl_recursive_call opimpl_recursive_call_r = _opimpl_recursive_call opimpl_recursive_call_f = _opimpl_recursive_call opimpl_recursive_call_v = _opimpl_recursive_call @arguments("box") def opimpl_strlen(self, strbox): return self.execute(rop.STRLEN, strbox) @arguments("box") def opimpl_unicodelen(self, unicodebox): return self.execute(rop.UNICODELEN, unicodebox) @arguments("box", "box") def opimpl_strgetitem(self, strbox, indexbox): return self.execute(rop.STRGETITEM, strbox, indexbox) @arguments("box", "box") def opimpl_unicodegetitem(self, unicodebox, indexbox): return self.execute(rop.UNICODEGETITEM, unicodebox, indexbox) @arguments("box", "box", "box") def opimpl_strsetitem(self, strbox, indexbox, newcharbox): return self.execute(rop.STRSETITEM, strbox, indexbox, newcharbox) @arguments("box", "box", "box") def opimpl_unicodesetitem(self, unicodebox, indexbox, newcharbox): self.execute(rop.UNICODESETITEM, unicodebox, indexbox, newcharbox) @arguments("box") def opimpl_newstr(self, lengthbox): return self.execute(rop.NEWSTR, lengthbox) @arguments("box") def opimpl_newunicode(self, lengthbox): return self.execute(rop.NEWUNICODE, lengthbox) @arguments("box", "box", "box", "box", "box") def opimpl_copystrcontent(self, srcbox, dstbox, srcstartbox, dststartbox, lengthbox): return self.execute(rop.COPYSTRCONTENT, srcbox, dstbox, srcstartbox, dststartbox, lengthbox) @arguments("box", "box", "box", "box", "box") def opimpl_copyunicodecontent(self, srcbox, dstbox, srcstartbox, dststartbox, lengthbox): return self.execute(rop.COPYUNICODECONTENT, srcbox, dstbox, srcstartbox, dststartbox, lengthbox) @arguments("box", "orgpc") def _opimpl_guard_value(self, box, orgpc): self.implement_guard_value(box, orgpc) @arguments("box", "box", "descr", "orgpc") def opimpl_str_guard_value(self, box, funcbox, descr, orgpc): if isinstance(box, Const): return box # no promotion needed, already a Const else: constbox = box.constbox() resbox = self.do_residual_call(funcbox, [box, constbox], descr, orgpc) promoted_box = resbox.constbox() # This is GUARD_VALUE because GUARD_TRUE assumes the existance # of a label when computing resumepc self.metainterp.generate_guard(rop.GUARD_VALUE, resbox, [promoted_box], resumepc=orgpc) self.metainterp.replace_box(box, constbox) return constbox opimpl_int_guard_value = _opimpl_guard_value opimpl_ref_guard_value = _opimpl_guard_value opimpl_float_guard_value = _opimpl_guard_value @arguments("box", "orgpc") def opimpl_guard_class(self, box, orgpc): clsbox = self.cls_of_box(box) if not self.metainterp.heapcache.is_class_known(box): self.metainterp.generate_guard(rop.GUARD_CLASS, box, [clsbox], resumepc=orgpc) self.metainterp.heapcache.class_now_known(box) return clsbox @arguments("int", "orgpc") def opimpl_loop_header(self, jdindex, orgpc): self.metainterp.seen_loop_header_for_jdindex = jdindex def verify_green_args(self, jitdriver_sd, varargs): num_green_args = jitdriver_sd.num_green_args assert len(varargs) == num_green_args for i in range(num_green_args): assert isinstance(varargs[i], Const) @arguments("int", "boxes3", "jitcode_position", "boxes3", "orgpc") def opimpl_jit_merge_point(self, jdindex, greenboxes, jcposition, redboxes, orgpc): any_operation = len(self.metainterp.history.operations) > 0 jitdriver_sd = self.metainterp.staticdata.jitdrivers_sd[jdindex] self.verify_green_args(jitdriver_sd, greenboxes) self.debug_merge_point(jitdriver_sd, jdindex, self.metainterp.portal_call_depth, self.metainterp.call_ids[-1], greenboxes) if self.metainterp.seen_loop_header_for_jdindex < 0: if not any_operation: return if self.metainterp.portal_call_depth or not self.metainterp.get_procedure_token(greenboxes, True): if not jitdriver_sd.no_loop_header: return # automatically add a loop_header if there is none self.metainterp.seen_loop_header_for_jdindex = jdindex # assert self.metainterp.seen_loop_header_for_jdindex == jdindex, ( "found a loop_header for a JitDriver that does not match " "the following jit_merge_point's") self.metainterp.seen_loop_header_for_jdindex = -1 # if not self.metainterp.portal_call_depth: assert jitdriver_sd is self.metainterp.jitdriver_sd # Set self.pc to point to jit_merge_point instead of just after: # if reached_loop_header() raises SwitchToBlackhole, then the # pc is still at the jit_merge_point, which is a point that is # much less expensive to blackhole out of. saved_pc = self.pc self.pc = orgpc self.metainterp.reached_loop_header(greenboxes, redboxes) self.pc = saved_pc # no exception, which means that the jit_merge_point did not # close the loop. We have to put the possibly-modified list # 'redboxes' back into the registers where it comes from. put_back_list_of_boxes3(self, jcposition, redboxes) else: if jitdriver_sd.warmstate.should_unroll_one_iteration(greenboxes): if self.unroll_iterations > 0: self.unroll_iterations -= 1 return # warning! careful here. We have to return from the current # frame containing the jit_merge_point, and then use # do_recursive_call() to follow the recursive call. This is # needed because do_recursive_call() will write its result # with make_result_of_lastop(), so the lastop must be right: # it must be the call to 'self', and not the jit_merge_point # itself, which has no result at all. assert len(self.metainterp.framestack) >= 2 try: self.metainterp.finishframe(None) except ChangeFrame: pass frame = self.metainterp.framestack[-1] frame.do_recursive_call(jitdriver_sd, greenboxes + redboxes, orgpc, assembler_call=True) raise ChangeFrame def debug_merge_point(self, jitdriver_sd, jd_index, portal_call_depth, current_call_id, greenkey): # debugging: produce a DEBUG_MERGE_POINT operation loc = jitdriver_sd.warmstate.get_location_str(greenkey) debug_print(loc) args = [ConstInt(jd_index), ConstInt(portal_call_depth), ConstInt(current_call_id)] + greenkey self.metainterp.history.record(rop.DEBUG_MERGE_POINT, args, None) @arguments("box", "label") def opimpl_goto_if_exception_mismatch(self, vtablebox, next_exc_target): metainterp = self.metainterp last_exc_value_box = metainterp.last_exc_value_box assert last_exc_value_box is not None assert metainterp.class_of_last_exc_is_const if not metainterp.cpu.ts.instanceOf(last_exc_value_box, vtablebox): self.pc = next_exc_target @arguments("box", "orgpc") def opimpl_raise(self, exc_value_box, orgpc): # xxx hack if not self.metainterp.heapcache.is_class_known(exc_value_box): clsbox = self.cls_of_box(exc_value_box) self.metainterp.generate_guard(rop.GUARD_CLASS, exc_value_box, [clsbox], resumepc=orgpc) self.metainterp.class_of_last_exc_is_const = True self.metainterp.last_exc_value_box = exc_value_box self.metainterp.popframe() self.metainterp.finishframe_exception() @arguments() def opimpl_reraise(self): assert self.metainterp.last_exc_value_box is not None self.metainterp.popframe() self.metainterp.finishframe_exception() @arguments() def opimpl_last_exception(self): # Same comment as in opimpl_goto_if_exception_mismatch(). exc_value_box = self.metainterp.last_exc_value_box assert exc_value_box is not None assert self.metainterp.class_of_last_exc_is_const return self.metainterp.cpu.ts.cls_of_box(exc_value_box) @arguments() def opimpl_last_exc_value(self): exc_value_box = self.metainterp.last_exc_value_box assert exc_value_box is not None return exc_value_box @arguments("box") def opimpl_debug_fatalerror(self, box): from rpython.rtyper.lltypesystem import rstr, lloperation msg = box.getref(lltype.Ptr(rstr.STR)) lloperation.llop.debug_fatalerror(lltype.Void, msg) @arguments("box", "box", "box", "box", "box") def opimpl_jit_debug(self, stringbox, arg1box, arg2box, arg3box, arg4box): from rpython.rtyper.lltypesystem import rstr from rpython.rtyper.annlowlevel import hlstr msg = stringbox.getref(lltype.Ptr(rstr.STR)) debug_print('jit_debug:', hlstr(msg), arg1box.getint(), arg2box.getint(), arg3box.getint(), arg4box.getint()) args = [stringbox, arg1box, arg2box, arg3box, arg4box] i = 4 while i > 0 and args[i].getint() == -sys.maxint-1: i -= 1 assert i >= 0 op = self.metainterp.history.record(rop.JIT_DEBUG, args[:i+1], None) self.metainterp.attach_debug_info(op) @arguments("box") def _opimpl_assert_green(self, box): if not isinstance(box, Const): msg = "assert_green failed at %s:%d" % ( self.jitcode.name, self.pc) if we_are_translated(): from rpython.rtyper.annlowlevel import llstr from rpython.rtyper.lltypesystem import lloperation lloperation.llop.debug_fatalerror(lltype.Void, llstr(msg)) else: from rpython.rlib.jit import AssertGreenFailed raise AssertGreenFailed(msg) opimpl_int_assert_green = _opimpl_assert_green opimpl_ref_assert_green = _opimpl_assert_green opimpl_float_assert_green = _opimpl_assert_green @arguments() def opimpl_current_trace_length(self): trace_length = len(self.metainterp.history.operations) return ConstInt(trace_length) @arguments("box") def _opimpl_isconstant(self, box): return ConstInt(isinstance(box, Const)) opimpl_int_isconstant = _opimpl_isconstant opimpl_ref_isconstant = _opimpl_isconstant opimpl_float_isconstant = _opimpl_isconstant @arguments("box") def _opimpl_isvirtual(self, box): return ConstInt(self.metainterp.heapcache.is_likely_virtual(box)) opimpl_ref_isvirtual = _opimpl_isvirtual @arguments("box") def opimpl_virtual_ref(self, box): # Details on the content of metainterp.virtualref_boxes: # # * it's a list whose items go two by two, containing first the # virtual box (e.g. the PyFrame) and then the vref box (e.g. # the 'virtual_ref(frame)'). # # * if we detect that the virtual box escapes during tracing # already (by generating a CALL_MAY_FORCE that marks the flags # in the vref), then we replace the vref in the list with # ConstPtr(NULL). # metainterp = self.metainterp vrefinfo = metainterp.staticdata.virtualref_info obj = box.getref_base() vref = vrefinfo.virtual_ref_during_tracing(obj) resbox = history.BoxPtr(vref) self.metainterp.heapcache.new(resbox) cindex = history.ConstInt(len(metainterp.virtualref_boxes) // 2) metainterp.history.record(rop.VIRTUAL_REF, [box, cindex], resbox) # Note: we allocate a JIT_VIRTUAL_REF here # (in virtual_ref_during_tracing()), in order to detect when # the virtual escapes during tracing already. We record it as a # VIRTUAL_REF operation. Later, optimizeopt.py should either kill # that operation or replace it with a NEW_WITH_VTABLE followed by # SETFIELD_GCs. metainterp.virtualref_boxes.append(box) metainterp.virtualref_boxes.append(resbox) return resbox @arguments("box") def opimpl_virtual_ref_finish(self, box): # virtual_ref_finish() assumes that we have a stack-like, last-in # first-out order. metainterp = self.metainterp vrefbox = metainterp.virtualref_boxes.pop() lastbox = metainterp.virtualref_boxes.pop() assert box.getref_base() == lastbox.getref_base() vrefinfo = metainterp.staticdata.virtualref_info vref = vrefbox.getref_base() if vrefinfo.is_virtual_ref(vref): # XXX write a comment about nullbox nullbox = self.metainterp.cpu.ts.CONST_NULL metainterp.history.record(rop.VIRTUAL_REF_FINISH, [vrefbox, nullbox], None) @arguments("box", "box", "box") def _opimpl_libffi_save_result(self, box_cif_description, box_exchange_buffer, box_result): from rpython.rtyper.lltypesystem import llmemory from rpython.rlib.jit_libffi import CIF_DESCRIPTION_P from rpython.jit.backend.llsupport.ffisupport import get_arg_descr cif_description = box_cif_description.getint() cif_description = llmemory.cast_int_to_adr(cif_description) cif_description = llmemory.cast_adr_to_ptr(cif_description, CIF_DESCRIPTION_P) kind, descr, itemsize = get_arg_descr(self.metainterp.cpu, cif_description.rtype) if kind != 'v': ofs = cif_description.exchange_result assert ofs % itemsize == 0 # alignment check (result) self.metainterp.history.record(rop.SETARRAYITEM_RAW, [box_exchange_buffer, ConstInt(ofs // itemsize), box_result], None, descr) opimpl_libffi_save_result_int = _opimpl_libffi_save_result opimpl_libffi_save_result_float = _opimpl_libffi_save_result opimpl_libffi_save_result_longlong = _opimpl_libffi_save_result opimpl_libffi_save_result_singlefloat = _opimpl_libffi_save_result # ------------------------------ def setup_call(self, argboxes): self.pc = 0 count_i = count_r = count_f = 0 for box in argboxes: if box.type == history.INT: self.registers_i[count_i] = box count_i += 1 elif box.type == history.REF: self.registers_r[count_r] = box count_r += 1 elif box.type == history.FLOAT: self.registers_f[count_f] = box count_f += 1 else: raise AssertionError(box.type) def setup_resume_at_op(self, pc): self.pc = pc def run_one_step(self): # Execute the frame forward. This method contains a loop that leaves # whenever the 'opcode_implementations' (which is one of the 'opimpl_' # methods) raises ChangeFrame. This is the case when the current frame # changes, due to a call or a return. try: staticdata = self.metainterp.staticdata while True: pc = self.pc op = ord(self.bytecode[pc]) #debug_print(self.jitcode.name, pc) #print staticdata.opcode_names[op] staticdata.opcode_implementations[op](self, pc) except ChangeFrame: pass def implement_guard_value(self, box, orgpc): """Promote the given Box into a Const. Note: be careful, it's a bit unclear what occurs if a single opcode needs to generate several ones and/or ones not near the beginning.""" if isinstance(box, Const): return box # no promotion needed, already a Const else: promoted_box = box.constbox() self.metainterp.generate_guard(rop.GUARD_VALUE, box, [promoted_box], resumepc=orgpc) self.metainterp.replace_box(box, promoted_box) return promoted_box def cls_of_box(self, box): return self.metainterp.cpu.ts.cls_of_box(box) @specialize.arg(1) def execute(self, opnum, *argboxes): return self.metainterp.execute_and_record(opnum, None, *argboxes) @specialize.arg(1) def execute_with_descr(self, opnum, descr, *argboxes): return self.metainterp.execute_and_record(opnum, descr, *argboxes) @specialize.arg(1) def execute_varargs(self, opnum, argboxes, descr, exc, pure): self.metainterp.clear_exception() resbox = self.metainterp.execute_and_record_varargs(opnum, argboxes, descr=descr) if pure and self.metainterp.last_exc_value_box is None and resbox: resbox = self.metainterp.record_result_of_call_pure(resbox) exc = exc and not isinstance(resbox, Const) if exc: if resbox is not None: self.make_result_of_lastop(resbox) # ^^^ this is done before handle_possible_exception() because we # need the box to show up in get_list_of_active_boxes() self.metainterp.handle_possible_exception() else: self.metainterp.assert_no_exception() return resbox def _build_allboxes(self, funcbox, argboxes, descr): allboxes = [None] * (len(argboxes)+1) allboxes[0] = funcbox src_i = src_r = src_f = 0 i = 1 for kind in descr.get_arg_types(): if kind == history.INT or kind == 'S': # single float while True: box = argboxes[src_i] src_i += 1 if box.type == history.INT: break elif kind == history.REF: while True: box = argboxes[src_r] src_r += 1 if box.type == history.REF: break elif kind == history.FLOAT or kind == 'L': # long long while True: box = argboxes[src_f] src_f += 1 if box.type == history.FLOAT: break else: raise AssertionError allboxes[i] = box i += 1 assert i == len(allboxes) return allboxes def do_residual_call(self, funcbox, argboxes, descr, pc, assembler_call=False, assembler_call_jd=None): debug_start("jit-residual-call") try: # First build allboxes: it may need some reordering from the # list provided in argboxes, depending on the order in which # the arguments are expected by the function # allboxes = self._build_allboxes(funcbox, argboxes, descr) effectinfo = descr.get_extra_info() if (assembler_call or effectinfo.check_forces_virtual_or_virtualizable()): # residual calls require attention to keep virtualizables in-sync self.metainterp.clear_exception() if effectinfo.oopspecindex == EffectInfo.OS_JIT_FORCE_VIRTUAL: resbox = self._do_jit_force_virtual(allboxes, descr, pc) if resbox is not None: return resbox self.metainterp.vable_and_vrefs_before_residual_call() resbox = self.metainterp.execute_and_record_varargs( rop.CALL_MAY_FORCE, allboxes, descr=descr) if effectinfo.is_call_release_gil(): self.metainterp.direct_call_release_gil() self.metainterp.vrefs_after_residual_call() vablebox = None if assembler_call: vablebox = self.metainterp.direct_assembler_call( assembler_call_jd) if resbox is not None: self.make_result_of_lastop(resbox) self.metainterp.vable_after_residual_call(funcbox) self.metainterp.generate_guard(rop.GUARD_NOT_FORCED, None) if vablebox is not None: self.metainterp.history.record(rop.KEEPALIVE, [vablebox], None) self.metainterp.handle_possible_exception() # XXX refactor: direct_libffi_call() is a hack if effectinfo.oopspecindex == effectinfo.OS_LIBFFI_CALL: self.metainterp.direct_libffi_call() return resbox else: effect = effectinfo.extraeffect if effect == effectinfo.EF_LOOPINVARIANT: return self.execute_varargs(rop.CALL_LOOPINVARIANT, allboxes, descr, False, False) exc = effectinfo.check_can_raise() pure = effectinfo.check_is_elidable() return self.execute_varargs(rop.CALL, allboxes, descr, exc, pure) finally: debug_stop("jit-residual-call") def do_conditional_call(self, condbox, funcbox, argboxes, descr, pc): if isinstance(condbox, ConstInt) and condbox.value == 0: return # so that the heapcache can keep argboxes virtual allboxes = self._build_allboxes(funcbox, argboxes, descr) effectinfo = descr.get_extra_info() assert not effectinfo.check_forces_virtual_or_virtualizable() exc = effectinfo.check_can_raise() pure = effectinfo.check_is_elidable() return self.execute_varargs(rop.COND_CALL, [condbox] + allboxes, descr, exc, pure) def _do_jit_force_virtual(self, allboxes, descr, pc): assert len(allboxes) == 2 if (self.metainterp.jitdriver_sd.virtualizable_info is None and self.metainterp.jitdriver_sd.greenfield_info is None): # can occur in case of multiple JITs return None vref_box = allboxes[1] standard_box = self.metainterp.virtualizable_boxes[-1] if standard_box is vref_box: return vref_box if self.metainterp.heapcache.is_nonstandard_virtualizable(vref_box): return None eqbox = self.metainterp.execute_and_record(rop.PTR_EQ, None, vref_box, standard_box) eqbox = self.implement_guard_value(eqbox, pc) isstandard = eqbox.getint() if isstandard: return standard_box else: return None def do_residual_or_indirect_call(self, funcbox, argboxes, calldescr, pc): """The 'residual_call' operation is emitted in two cases: when we have to generate a residual CALL operation, but also to handle an indirect_call that may need to be inlined.""" if isinstance(funcbox, Const): sd = self.metainterp.staticdata key = sd.cpu.ts.getaddr_for_box(funcbox) jitcode = sd.bytecode_for_address(key) if jitcode is not None: # we should follow calls to this graph return self.metainterp.perform_call(jitcode, argboxes) # but we should not follow calls to that graph return self.do_residual_call(funcbox, argboxes, calldescr, pc) # ____________________________________________________________ class MetaInterpStaticData(object): logger_noopt = None logger_ops = None def __init__(self, cpu, options, ProfilerClass=EmptyProfiler, warmrunnerdesc=None): self.cpu = cpu self.stats = self.cpu.stats self.options = options self.logger_noopt = Logger(self) self.logger_ops = Logger(self, guard_number=True) self.profiler = ProfilerClass() self.profiler.cpu = cpu self.warmrunnerdesc = warmrunnerdesc if warmrunnerdesc: self.config = warmrunnerdesc.translator.config else: from rpython.config.translationoption import get_combined_translation_config self.config = get_combined_translation_config(translating=True) backendmodule = self.cpu.__module__ backendmodule = backendmodule.split('.')[-2] self.jit_starting_line = 'JIT starting (%s)' % backendmodule self._addr2name_keys = [] self._addr2name_values = [] self.__dict__.update(compile.make_done_loop_tokens()) for val in ['int', 'float', 'ref', 'void']: fullname = 'done_with_this_frame_descr_' + val setattr(self.cpu, fullname, getattr(self, fullname)) d = self.exit_frame_with_exception_descr_ref self.cpu.exit_frame_with_exception_descr_ref = d def _freeze_(self): return True def setup_insns(self, insns): self.opcode_names = ['?'] * len(insns) self.opcode_implementations = [None] * len(insns) for key, value in insns.items(): assert self.opcode_implementations[value] is None self.opcode_names[value] = key name, argcodes = key.split('/') opimpl = _get_opimpl_method(name, argcodes) self.opcode_implementations[value] = opimpl self.op_catch_exception = insns.get('catch_exception/L', -1) def setup_descrs(self, descrs): self.opcode_descrs = descrs def setup_indirectcalltargets(self, indirectcalltargets): self.indirectcalltargets = list(indirectcalltargets) def setup_list_of_addr2name(self, list_of_addr2name): self._addr2name_keys = [key for key, value in list_of_addr2name] self._addr2name_values = [value for key, value in list_of_addr2name] def finish_setup(self, codewriter, optimizer=None): from rpython.jit.metainterp.blackhole import BlackholeInterpBuilder self.blackholeinterpbuilder = BlackholeInterpBuilder(codewriter, self) # asm = codewriter.assembler self.setup_insns(asm.insns) self.setup_descrs(asm.descrs) self.setup_indirectcalltargets(asm.indirectcalltargets) self.setup_list_of_addr2name(asm.list_of_addr2name) # self.jitdrivers_sd = codewriter.callcontrol.jitdrivers_sd self.virtualref_info = codewriter.callcontrol.virtualref_info self.callinfocollection = codewriter.callcontrol.callinfocollection self.has_libffi_call = codewriter.callcontrol.has_libffi_call # # store this information for fastpath of call_assembler # (only the paths that can actually be taken) exc_descr = compile.PropagateExceptionDescr() for jd in self.jitdrivers_sd: name = {history.INT: 'int', history.REF: 'ref', history.FLOAT: 'float', history.VOID: 'void'}[jd.result_type] tokens = getattr(self, 'loop_tokens_done_with_this_frame_%s' % name) jd.portal_finishtoken = tokens[0].finishdescr jd.propagate_exc_descr = exc_descr # self.cpu.propagate_exception_descr = exc_descr # self.globaldata = MetaInterpGlobalData(self) def _setup_once(self): """Runtime setup needed by the various components of the JIT.""" if not self.globaldata.initialized: debug_print(self.jit_starting_line) self.cpu.setup_once() if not self.profiler.initialized: self.profiler.start() self.profiler.initialized = True self.globaldata.initialized = True def get_name_from_address(self, addr): # for debugging only if we_are_translated(): d = self.globaldata.addr2name if d is None: # Build the dictionary at run-time. This is needed # because the keys are function/class addresses, so they # can change from run to run. d = {} keys = self._addr2name_keys values = self._addr2name_values for i in range(len(keys)): d[keys[i]] = values[i] self.globaldata.addr2name = d return d.get(addr, '') else: for i in range(len(self._addr2name_keys)): if addr == self._addr2name_keys[i]: return self._addr2name_values[i] return '' def bytecode_for_address(self, fnaddress): if we_are_translated(): d = self.globaldata.indirectcall_dict if d is None: # Build the dictionary at run-time. This is needed # because the keys are function addresses, so they # can change from run to run. d = {} for jitcode in self.indirectcalltargets: assert jitcode.fnaddr not in d d[jitcode.fnaddr] = jitcode self.globaldata.indirectcall_dict = d return d.get(fnaddress, None) else: for jitcode in self.indirectcalltargets: if jitcode.fnaddr == fnaddress: return jitcode return None def try_to_free_some_loops(self): # Increase here the generation recorded by the memory manager. if self.warmrunnerdesc is not None: # for tests self.warmrunnerdesc.memory_manager.next_generation() # ---------------- logging ------------------------ def log(self, msg): debug_print(msg) # ____________________________________________________________ class MetaInterpGlobalData(object): """This object contains the JIT's global, mutable data. Warning: for any data that you put here, think that there might be multiple MetaInterps accessing it at the same time. As usual we are safe from corruption thanks to the GIL, but keep in mind that any MetaInterp might modify any of these fields while another MetaInterp is, say, currently in a residual call to a function. Multiple MetaInterps occur either with threads or, in single-threaded cases, with recursion. This is a case that is not well-tested, so please be careful :-( But thankfully this is one of the very few places where multiple concurrent MetaInterps may interact with each other. """ def __init__(self, staticdata): self.initialized = False self.indirectcall_dict = None self.addr2name = None self.loopnumbering = 0 # ____________________________________________________________ class MetaInterp(object): portal_call_depth = 0 cancel_count = 0 def __init__(self, staticdata, jitdriver_sd): self.staticdata = staticdata self.cpu = staticdata.cpu self.jitdriver_sd = jitdriver_sd # Note: self.jitdriver_sd is the JitDriverStaticData that corresponds # to the current loop -- the outermost one. Be careful, because # during recursion we can also see other jitdrivers. self.portal_trace_positions = [] self.free_frames_list = [] self.last_exc_value_box = None self.forced_virtualizable = None self.partial_trace = None self.retracing_from = -1 self.call_pure_results = args_dict() self.heapcache = HeapCache() self.call_ids = [] self.current_call_id = 0 def retrace_needed(self, trace): self.partial_trace = trace self.retracing_from = len(self.history.operations) - 1 self.heapcache.reset() def perform_call(self, jitcode, boxes, greenkey=None): # causes the metainterp to enter the given subfunction f = self.newframe(jitcode, greenkey) f.setup_call(boxes) raise ChangeFrame def is_main_jitcode(self, jitcode): return self.jitdriver_sd is not None and jitcode is self.jitdriver_sd.mainjitcode def newframe(self, jitcode, greenkey=None): if jitcode.is_portal: self.portal_call_depth += 1 self.call_ids.append(self.current_call_id) self.current_call_id += 1 if greenkey is not None and self.is_main_jitcode(jitcode): self.portal_trace_positions.append( (greenkey, len(self.history.operations))) if len(self.free_frames_list) > 0: f = self.free_frames_list.pop() else: f = MIFrame(self) f.setup(jitcode, greenkey) self.framestack.append(f) return f def popframe(self): frame = self.framestack.pop() jitcode = frame.jitcode if jitcode.is_portal: self.portal_call_depth -= 1 self.call_ids.pop() if frame.greenkey is not None and self.is_main_jitcode(jitcode): self.portal_trace_positions.append( (None, len(self.history.operations))) # we save the freed MIFrames to avoid needing to re-create new # MIFrame objects all the time; they are a bit big, with their # 3*256 register entries. frame.cleanup_registers() self.free_frames_list.append(frame) def finishframe(self, resultbox): # handle a non-exceptional return from the current frame self.last_exc_value_box = None self.popframe() if self.framestack: if resultbox is not None: self.framestack[-1].make_result_of_lastop(resultbox) raise ChangeFrame else: try: self.compile_done_with_this_frame(resultbox) except SwitchToBlackhole, stb: self.aborted_tracing(stb.reason) sd = self.staticdata result_type = self.jitdriver_sd.result_type if result_type == history.VOID: assert resultbox is None raise jitexc.DoneWithThisFrameVoid() elif result_type == history.INT: raise jitexc.DoneWithThisFrameInt(resultbox.getint()) elif result_type == history.REF: raise jitexc.DoneWithThisFrameRef(self.cpu, resultbox.getref_base()) elif result_type == history.FLOAT: raise jitexc.DoneWithThisFrameFloat(resultbox.getfloatstorage()) else: assert False def finishframe_exception(self): excvaluebox = self.last_exc_value_box while self.framestack: frame = self.framestack[-1] code = frame.bytecode position = frame.pc # <-- just after the insn that raised if position < len(code): opcode = ord(code[position]) if opcode == self.staticdata.op_catch_exception: # found a 'catch_exception' instruction; # jump to the handler target = ord(code[position+1]) | (ord(code[position+2])<<8) frame.pc = target raise ChangeFrame self.popframe() try: self.compile_exit_frame_with_exception(excvaluebox) except SwitchToBlackhole, stb: self.aborted_tracing(stb.reason) raise jitexc.ExitFrameWithExceptionRef(self.cpu, excvaluebox.getref_base()) def check_recursion_invariant(self): portal_call_depth = -1 for frame in self.framestack: jitcode = frame.jitcode assert jitcode.is_portal == len([ jd for jd in self.staticdata.jitdrivers_sd if jd.mainjitcode is jitcode]) if jitcode.is_portal: portal_call_depth += 1 if portal_call_depth != self.portal_call_depth: print "portal_call_depth problem!!!" print portal_call_depth, self.portal_call_depth for frame in self.framestack: jitcode = frame.jitcode if jitcode.is_portal: print "P", else: print " ", print jitcode.name raise AssertionError def generate_guard(self, opnum, box=None, extraargs=[], resumepc=-1): if isinstance(box, Const): # no need for a guard return if box is not None: moreargs = [box] + extraargs else: moreargs = list(extraargs) if opnum == rop.GUARD_NOT_FORCED or opnum == rop.GUARD_NOT_FORCED_2: resumedescr = compile.ResumeGuardForcedDescr(self.staticdata, self.jitdriver_sd) elif opnum == rop.GUARD_NOT_INVALIDATED: resumedescr = compile.ResumeGuardNotInvalidated() elif opnum == rop.GUARD_FUTURE_CONDITION: resumedescr = compile.ResumeAtPositionDescr() else: resumedescr = compile.ResumeGuardDescr() guard_op = self.history.record(opnum, moreargs, None, descr=resumedescr) self.capture_resumedata(resumedescr, resumepc) self.staticdata.profiler.count_ops(opnum, Counters.GUARDS) # count self.attach_debug_info(guard_op) return guard_op def capture_resumedata(self, resumedescr, resumepc=-1): virtualizable_boxes = None if (self.jitdriver_sd.virtualizable_info is not None or self.jitdriver_sd.greenfield_info is not None): virtualizable_boxes = self.virtualizable_boxes saved_pc = 0 if self.framestack: frame = self.framestack[-1] saved_pc = frame.pc if resumepc >= 0: frame.pc = resumepc resume.capture_resumedata(self.framestack, virtualizable_boxes, self.virtualref_boxes, resumedescr) if self.framestack: self.framestack[-1].pc = saved_pc def create_empty_history(self): self.history = history.History() self.staticdata.stats.set_history(self.history) def _all_constants(self, *boxes): if len(boxes) == 0: return True return isinstance(boxes[0], Const) and self._all_constants(*boxes[1:]) def _all_constants_varargs(self, boxes): for box in boxes: if not isinstance(box, Const): return False return True @specialize.arg(1) def execute_and_record(self, opnum, descr, *argboxes): history.check_descr(descr) assert not (rop._CANRAISE_FIRST <= opnum <= rop._CANRAISE_LAST) # execute the operation profiler = self.staticdata.profiler profiler.count_ops(opnum) resbox = executor.execute(self.cpu, self, opnum, descr, *argboxes) if rop._ALWAYS_PURE_FIRST <= opnum <= rop._ALWAYS_PURE_LAST: return self._record_helper_pure(opnum, resbox, descr, *argboxes) else: return self._record_helper_nonpure_varargs(opnum, resbox, descr, list(argboxes)) @specialize.arg(1) def execute_and_record_varargs(self, opnum, argboxes, descr=None): history.check_descr(descr) # execute the operation profiler = self.staticdata.profiler profiler.count_ops(opnum) resbox = executor.execute_varargs(self.cpu, self, opnum, argboxes, descr) # check if the operation can be constant-folded away argboxes = list(argboxes) if rop._ALWAYS_PURE_FIRST <= opnum <= rop._ALWAYS_PURE_LAST: resbox = self._record_helper_pure_varargs(opnum, resbox, descr, argboxes) else: resbox = self._record_helper_nonpure_varargs(opnum, resbox, descr, argboxes) return resbox def _record_helper_pure(self, opnum, resbox, descr, *argboxes): canfold = self._all_constants(*argboxes) if canfold: resbox = resbox.constbox() # ensure it is a Const return resbox else: resbox = resbox.nonconstbox() # ensure it is a Box return self._record_helper_nonpure_varargs(opnum, resbox, descr, list(argboxes)) def _record_helper_pure_varargs(self, opnum, resbox, descr, argboxes): canfold = self._all_constants_varargs(argboxes) if canfold: resbox = resbox.constbox() # ensure it is a Const return resbox else: resbox = resbox.nonconstbox() # ensure it is a Box return self._record_helper_nonpure_varargs(opnum, resbox, descr, argboxes) def _record_helper_nonpure_varargs(self, opnum, resbox, descr, argboxes): assert resbox is None or isinstance(resbox, Box) if (rop._OVF_FIRST <= opnum <= rop._OVF_LAST and self.last_exc_value_box is None and self._all_constants_varargs(argboxes)): return resbox.constbox() # record the operation profiler = self.staticdata.profiler profiler.count_ops(opnum, Counters.RECORDED_OPS) self.heapcache.invalidate_caches(opnum, descr, argboxes) op = self.history.record(opnum, argboxes, resbox, descr) self.attach_debug_info(op) return resbox def execute_new_with_vtable(self, known_class): resbox = self.execute_and_record(rop.NEW_WITH_VTABLE, None, known_class) self.heapcache.new(resbox) self.heapcache.class_now_known(resbox) return resbox def execute_new(self, typedescr): resbox = self.execute_and_record(rop.NEW, typedescr) self.heapcache.new(resbox) return resbox def execute_new_array(self, itemsizedescr, lengthbox): resbox = self.execute_and_record(rop.NEW_ARRAY, itemsizedescr, lengthbox) self.heapcache.new_array(resbox, lengthbox) return resbox def execute_setfield_gc(self, fielddescr, box, valuebox): self.execute_and_record(rop.SETFIELD_GC, fielddescr, box, valuebox) self.heapcache.setfield(box, valuebox, fielddescr) def execute_setarrayitem_gc(self, arraydescr, arraybox, indexbox, itembox): self.execute_and_record(rop.SETARRAYITEM_GC, arraydescr, arraybox, indexbox, itembox) self.heapcache.setarrayitem(arraybox, indexbox, itembox, arraydescr) def execute_setinteriorfield_gc(self, descr, array, index, value): self.execute_and_record(rop.SETINTERIORFIELD_GC, descr, array, index, value) def execute_raw_store(self, arraydescr, addrbox, offsetbox, valuebox): self.execute_and_record(rop.RAW_STORE, arraydescr, addrbox, offsetbox, valuebox) def attach_debug_info(self, op): if (not we_are_translated() and op is not None and getattr(self, 'framestack', None)): op.pc = self.framestack[-1].pc op.name = self.framestack[-1].jitcode.name def execute_raised(self, exception, constant=False): if isinstance(exception, jitexc.JitException): raise jitexc.JitException, exception # go through llexception = jitexc.get_llexception(self.cpu, exception) self.execute_ll_raised(llexception, constant) def execute_ll_raised(self, llexception, constant=False): # Exception handling: when execute.do_call() gets an exception it # calls metainterp.execute_raised(), which puts it into # 'self.last_exc_value_box'. This is used shortly afterwards # to generate either GUARD_EXCEPTION or GUARD_NO_EXCEPTION, and also # to handle the following opcodes 'goto_if_exception_mismatch'. llexception = self.cpu.ts.cast_to_ref(llexception) exc_value_box = self.cpu.ts.get_exc_value_box(llexception) if constant: exc_value_box = exc_value_box.constbox() self.last_exc_value_box = exc_value_box self.class_of_last_exc_is_const = constant # 'class_of_last_exc_is_const' means that the class of the value # stored in the exc_value Box can be assumed to be a Const. This # is only True after a GUARD_EXCEPTION or GUARD_CLASS. def clear_exception(self): self.last_exc_value_box = None def aborted_tracing(self, reason): self.staticdata.profiler.count(reason) debug_print('~~~ ABORTING TRACING') jd_sd = self.jitdriver_sd if not self.current_merge_points: greenkey = None # we're in the bridge else: greenkey = self.current_merge_points[0][0][:jd_sd.num_green_args] self.staticdata.warmrunnerdesc.hooks.on_abort(reason, jd_sd.jitdriver, greenkey, jd_sd.warmstate.get_location_str(greenkey), self.staticdata.logger_ops._make_log_operations(), self.history.operations) self.staticdata.stats.aborted() def blackhole_if_trace_too_long(self): warmrunnerstate = self.jitdriver_sd.warmstate if len(self.history.operations) > warmrunnerstate.trace_limit: greenkey_of_huge_function = self.find_biggest_function() self.staticdata.stats.record_aborted(greenkey_of_huge_function) self.portal_trace_positions = None if greenkey_of_huge_function is not None: warmrunnerstate.disable_noninlinable_function( greenkey_of_huge_function) if self.current_merge_points: jd_sd = self.jitdriver_sd greenkey = self.current_merge_points[0][0][:jd_sd.num_green_args] warmrunnerstate.JitCell.trace_next_iteration(greenkey) raise SwitchToBlackhole(Counters.ABORT_TOO_LONG) def _interpret(self): # Execute the frames forward until we raise a DoneWithThisFrame, # a ExitFrameWithException, or a ContinueRunningNormally exception. self.staticdata.stats.entered() while True: self.framestack[-1].run_one_step() self.blackhole_if_trace_too_long() if not we_are_translated(): self.check_recursion_invariant() def interpret(self): if we_are_translated(): self._interpret() else: try: self._interpret() except: import sys if sys.exc_info()[0] is not None: self.staticdata.log(sys.exc_info()[0].__name__) raise @specialize.arg(1) def compile_and_run_once(self, jitdriver_sd, *args): # NB. we pass explicity 'jitdriver_sd' around here, even though it # is also available as 'self.jitdriver_sd', because we need to # specialize this function and a few other ones for the '*args'. debug_start('jit-tracing') self.staticdata._setup_once() self.staticdata.profiler.start_tracing() assert jitdriver_sd is self.jitdriver_sd self.staticdata.try_to_free_some_loops() self.create_empty_history() try: original_boxes = self.initialize_original_boxes(jitdriver_sd, *args) return self._compile_and_run_once(original_boxes) finally: self.staticdata.profiler.end_tracing() debug_stop('jit-tracing') def _compile_and_run_once(self, original_boxes): self.initialize_state_from_start(original_boxes) self.current_merge_points = [(original_boxes, 0)] num_green_args = self.jitdriver_sd.num_green_args original_greenkey = original_boxes[:num_green_args] self.resumekey = compile.ResumeFromInterpDescr(original_greenkey) self.history.inputargs = original_boxes[num_green_args:] self.seen_loop_header_for_jdindex = -1 try: self.interpret() except SwitchToBlackhole, stb: self.run_blackhole_interp_to_cancel_tracing(stb) assert False, "should always raise" def handle_guard_failure(self, key, deadframe): debug_start('jit-tracing') self.staticdata.profiler.start_tracing() assert isinstance(key, compile.ResumeGuardDescr) # store the resumekey.wref_original_loop_token() on 'self' to make # sure that it stays alive as long as this MetaInterp self.resumekey_original_loop_token = key.wref_original_loop_token() self.staticdata.try_to_free_some_loops() self.initialize_state_from_guard_failure(key, deadframe) try: return self._handle_guard_failure(key, deadframe) finally: self.resumekey_original_loop_token = None self.staticdata.profiler.end_tracing() debug_stop('jit-tracing') def _handle_guard_failure(self, key, deadframe): self.current_merge_points = [] self.resumekey = key self.seen_loop_header_for_jdindex = -1 if isinstance(key, compile.ResumeAtPositionDescr): self.seen_loop_header_for_jdindex = self.jitdriver_sd.index dont_change_position = True else: dont_change_position = False try: self.prepare_resume_from_failure(key.guard_opnum, dont_change_position, deadframe) if self.resumekey_original_loop_token is None: # very rare case raise SwitchToBlackhole(Counters.ABORT_BRIDGE) self.interpret() except SwitchToBlackhole, stb: self.run_blackhole_interp_to_cancel_tracing(stb) assert False, "should always raise" def run_blackhole_interp_to_cancel_tracing(self, stb): # We got a SwitchToBlackhole exception. Convert the framestack into # a stack of blackhole interpreters filled with the same values, and # run it. from rpython.jit.metainterp.blackhole import convert_and_run_from_pyjitpl self.aborted_tracing(stb.reason) convert_and_run_from_pyjitpl(self, stb.raising_exception) assert False # ^^^ must raise def remove_consts_and_duplicates(self, boxes, endindex, duplicates): for i in range(endindex): box = boxes[i] if isinstance(box, Const) or box in duplicates: oldbox = box box = oldbox.clonebox() boxes[i] = box self.history.record(rop.SAME_AS, [oldbox], box) else: duplicates[box] = None def reached_loop_header(self, greenboxes, redboxes): self.heapcache.reset(reset_virtuals=False) duplicates = {} self.remove_consts_and_duplicates(redboxes, len(redboxes), duplicates) live_arg_boxes = greenboxes + redboxes if self.jitdriver_sd.virtualizable_info is not None: # we use pop() to remove the last item, which is the virtualizable # itself self.remove_consts_and_duplicates(self.virtualizable_boxes, len(self.virtualizable_boxes)-1, duplicates) live_arg_boxes += self.virtualizable_boxes live_arg_boxes.pop() # generate a dummy guard just before the JUMP so that unroll can use it # when it's creating artificial guards. self.generate_guard(rop.GUARD_FUTURE_CONDITION) assert len(self.virtualref_boxes) == 0, "missing virtual_ref_finish()?" # Called whenever we reach the 'loop_header' hint. # First, attempt to make a bridge: # - if self.resumekey is a ResumeGuardDescr, it starts from a guard # that failed; # - if self.resumekey is a ResumeFromInterpDescr, it starts directly # from the interpreter. if not self.partial_trace: # FIXME: Support a retrace to be a bridge as well as a loop self.compile_trace(live_arg_boxes) # raises in case it works -- which is the common case, hopefully, # at least for bridges starting from a guard. # Search in current_merge_points for original_boxes with compatible # green keys, representing the beginning of the same loop as the one # we end now. num_green_args = self.jitdriver_sd.num_green_args for j in range(len(self.current_merge_points)-1, -1, -1): original_boxes, start = self.current_merge_points[j] assert len(original_boxes) == len(live_arg_boxes) for i in range(num_green_args): box1 = original_boxes[i] box2 = live_arg_boxes[i] assert isinstance(box1, Const) if not box1.same_constant(box2): break else: if self.partial_trace: if start != self.retracing_from: raise SwitchToBlackhole(Counters.ABORT_BAD_LOOP) # For now # Found! Compile it as a loop. # raises in case it works -- which is the common case self.compile_loop(original_boxes, live_arg_boxes, start) # creation of the loop was cancelled! self.cancel_count += 1 if self.staticdata.warmrunnerdesc: memmgr = self.staticdata.warmrunnerdesc.memory_manager if memmgr: if self.cancel_count > memmgr.max_unroll_loops: self.compile_loop_or_abort(original_boxes, live_arg_boxes, start) self.staticdata.log('cancelled, tracing more...') # Otherwise, no loop found so far, so continue tracing. start = len(self.history.operations) self.current_merge_points.append((live_arg_boxes, start)) def _unpack_boxes(self, boxes, start, stop): ints = []; refs = []; floats = [] for i in range(start, stop): box = boxes[i] if box.type == history.INT: ints.append(box.getint()) elif box.type == history.REF: refs.append(box.getref_base()) elif box.type == history.FLOAT:floats.append(box.getfloatstorage()) else: assert 0 return ints[:], refs[:], floats[:] def raise_continue_running_normally(self, live_arg_boxes, loop_token): self.history.inputargs = None self.history.operations = None # For simplicity, we just raise ContinueRunningNormally here and # ignore the loop_token passed in. It means that we go back to # interpreted mode, but it should come back very quickly to the # JIT, find probably the same 'loop_token', and execute it. if we_are_translated(): num_green_args = self.jitdriver_sd.num_green_args gi, gr, gf = self._unpack_boxes(live_arg_boxes, 0, num_green_args) ri, rr, rf = self._unpack_boxes(live_arg_boxes, num_green_args, len(live_arg_boxes)) CRN = jitexc.ContinueRunningNormally raise CRN(gi, gr, gf, ri, rr, rf) else: # However, in order to keep the existing tests working # (which are based on the assumption that 'loop_token' is # directly used here), a bit of custom non-translatable code... self._nontranslated_run_directly(live_arg_boxes, loop_token) assert 0, "unreachable" def _nontranslated_run_directly(self, live_arg_boxes, loop_token): "NOT_RPYTHON" args = [] num_green_args = self.jitdriver_sd.num_green_args num_red_args = self.jitdriver_sd.num_red_args for box in live_arg_boxes[num_green_args:num_green_args+num_red_args]: if box.type == history.INT: args.append(box.getint()) elif box.type == history.REF: args.append(box.getref_base()) elif box.type == history.FLOAT: args.append(box.getfloatstorage()) else: assert 0 self.jitdriver_sd.warmstate.execute_assembler(loop_token, *args) def prepare_resume_from_failure(self, opnum, dont_change_position, deadframe): frame = self.framestack[-1] if opnum == rop.GUARD_TRUE: # a goto_if_not that jumps only now if not dont_change_position: frame.pc = frame.jitcode.follow_jump(frame.pc) elif opnum == rop.GUARD_FALSE: # a goto_if_not that stops jumping pass elif opnum == rop.GUARD_VALUE or opnum == rop.GUARD_CLASS: pass # the pc is already set to the *start* of the opcode elif (opnum == rop.GUARD_NONNULL or opnum == rop.GUARD_ISNULL or opnum == rop.GUARD_NONNULL_CLASS): pass # the pc is already set to the *start* of the opcode elif opnum == rop.GUARD_NO_EXCEPTION or opnum == rop.GUARD_EXCEPTION: exception = self.cpu.grab_exc_value(deadframe) if exception: self.execute_ll_raised(lltype.cast_opaque_ptr(rclass.OBJECTPTR, exception)) else: self.clear_exception() try: self.handle_possible_exception() except ChangeFrame: pass elif opnum == rop.GUARD_NOT_INVALIDATED: pass # XXX we want to do something special in resume descr, # but not now elif opnum == rop.GUARD_NO_OVERFLOW: # an overflow now detected if not dont_change_position: self.execute_raised(OverflowError(), constant=True) try: self.finishframe_exception() except ChangeFrame: pass elif opnum == rop.GUARD_OVERFLOW: # no longer overflowing self.clear_exception() else: from rpython.jit.metainterp.resoperation import opname raise NotImplementedError(opname[opnum]) def get_procedure_token(self, greenkey, with_compiled_targets=False): JitCell = self.jitdriver_sd.warmstate.JitCell cell = JitCell.get_jit_cell_at_key(greenkey) if cell is None: return None token = cell.get_procedure_token() if with_compiled_targets: if not token: return None if not token.target_tokens: return None return token def compile_loop(self, original_boxes, live_arg_boxes, start, try_disabling_unroll=False): num_green_args = self.jitdriver_sd.num_green_args greenkey = original_boxes[:num_green_args] if not self.partial_trace: ptoken = self.get_procedure_token(greenkey) if ptoken is not None and ptoken.target_tokens is not None: # XXX this path not tested, but shown to occur on pypy-c :-( self.staticdata.log('cancelled: we already have a token now') raise SwitchToBlackhole(Counters.ABORT_BAD_LOOP) if self.partial_trace: target_token = compile.compile_retrace(self, greenkey, start, original_boxes[num_green_args:], live_arg_boxes[num_green_args:], self.partial_trace, self.resumekey) else: target_token = compile.compile_loop(self, greenkey, start, original_boxes[num_green_args:], live_arg_boxes[num_green_args:], try_disabling_unroll=try_disabling_unroll) if target_token is not None: assert isinstance(target_token, TargetToken) self.jitdriver_sd.warmstate.attach_procedure_to_interp(greenkey, target_token.targeting_jitcell_token) self.staticdata.stats.add_jitcell_token(target_token.targeting_jitcell_token) if target_token is not None: # raise if it *worked* correctly assert isinstance(target_token, TargetToken) jitcell_token = target_token.targeting_jitcell_token self.raise_continue_running_normally(live_arg_boxes, jitcell_token) def compile_loop_or_abort(self, original_boxes, live_arg_boxes, start): """Called after we aborted more than 'max_unroll_loops' times. As a last attempt, try to compile the loop with unrolling disabled. """ if not self.partial_trace: self.compile_loop(original_boxes, live_arg_boxes, start, try_disabling_unroll=True) # self.staticdata.log('cancelled too many times!') raise SwitchToBlackhole(Counters.ABORT_BAD_LOOP) def compile_trace(self, live_arg_boxes): num_green_args = self.jitdriver_sd.num_green_args greenkey = live_arg_boxes[:num_green_args] target_jitcell_token = self.get_procedure_token(greenkey, True) if not target_jitcell_token: return self.history.record(rop.JUMP, live_arg_boxes[num_green_args:], None, descr=target_jitcell_token) try: target_token = compile.compile_trace(self, self.resumekey) finally: self.history.operations.pop() # remove the JUMP if target_token is not None: # raise if it *worked* correctly assert isinstance(target_token, TargetToken) jitcell_token = target_token.targeting_jitcell_token self.raise_continue_running_normally(live_arg_boxes, jitcell_token) def compile_done_with_this_frame(self, exitbox): # temporarily put a JUMP to a pseudo-loop self.store_token_in_vable() sd = self.staticdata result_type = self.jitdriver_sd.result_type if result_type == history.VOID: assert exitbox is None exits = [] loop_tokens = sd.loop_tokens_done_with_this_frame_void elif result_type == history.INT: exits = [exitbox] loop_tokens = sd.loop_tokens_done_with_this_frame_int elif result_type == history.REF: exits = [exitbox] loop_tokens = sd.loop_tokens_done_with_this_frame_ref elif result_type == history.FLOAT: exits = [exitbox] loop_tokens = sd.loop_tokens_done_with_this_frame_float else: assert False # FIXME: kill TerminatingLoopToken? # FIXME: can we call compile_trace? token = loop_tokens[0].finishdescr self.history.record(rop.FINISH, exits, None, descr=token) target_token = compile.compile_trace(self, self.resumekey) if target_token is not token: compile.giveup() def store_token_in_vable(self): vinfo = self.jitdriver_sd.virtualizable_info if vinfo is None: return vbox = self.virtualizable_boxes[-1] if vbox is self.forced_virtualizable: return # we already forced it by hand force_token_box = history.BoxPtr() # in case the force_token has not been recorded, record it here # to make sure we know the virtualizable can be broken. However, the # contents of the virtualizable should be generally correct self.history.record(rop.FORCE_TOKEN, [], force_token_box) self.history.record(rop.SETFIELD_GC, [vbox, force_token_box], None, descr=vinfo.vable_token_descr) self.generate_guard(rop.GUARD_NOT_FORCED_2, None) def compile_exit_frame_with_exception(self, valuebox): self.store_token_in_vable() sd = self.staticdata token = sd.loop_tokens_exit_frame_with_exception_ref[0].finishdescr self.history.record(rop.FINISH, [valuebox], None, descr=token) target_token = compile.compile_trace(self, self.resumekey) if target_token is not token: compile.giveup() @specialize.arg(1) def initialize_original_boxes(self, jitdriver_sd, *args): original_boxes = [] self._fill_original_boxes(jitdriver_sd, original_boxes, jitdriver_sd.num_green_args, *args) return original_boxes @specialize.arg(1) def _fill_original_boxes(self, jitdriver_sd, original_boxes, num_green_args, *args): if args: from rpython.jit.metainterp.warmstate import wrap box = wrap(self.cpu, args[0], num_green_args > 0) original_boxes.append(box) self._fill_original_boxes(jitdriver_sd, original_boxes, num_green_args-1, *args[1:]) def initialize_state_from_start(self, original_boxes): # ----- make a new frame ----- self.portal_call_depth = -1 # always one portal around self.framestack = [] f = self.newframe(self.jitdriver_sd.mainjitcode) f.setup_call(original_boxes) assert self.portal_call_depth == 0 self.virtualref_boxes = [] self.initialize_withgreenfields(original_boxes) self.initialize_virtualizable(original_boxes) def initialize_state_from_guard_failure(self, resumedescr, deadframe): # guard failure: rebuild a complete MIFrame stack # This is stack-critical code: it must not be interrupted by StackOverflow, # otherwise the jit_virtual_refs are left in a dangling state. rstack._stack_criticalcode_start() try: self.portal_call_depth = -1 # always one portal around self.history = history.History() inputargs_and_holes = self.rebuild_state_after_failure(resumedescr, deadframe) self.history.inputargs = [box for box in inputargs_and_holes if box] finally: rstack._stack_criticalcode_stop() def initialize_virtualizable(self, original_boxes): vinfo = self.jitdriver_sd.virtualizable_info if vinfo is not None: index = (self.jitdriver_sd.num_green_args + self.jitdriver_sd.index_of_virtualizable) virtualizable_box = original_boxes[index] virtualizable = vinfo.unwrap_virtualizable_box(virtualizable_box) # The field 'virtualizable_boxes' is not even present # if 'virtualizable_info' is None. Check for that first. self.virtualizable_boxes = vinfo.read_boxes(self.cpu, virtualizable) original_boxes += self.virtualizable_boxes self.virtualizable_boxes.append(virtualizable_box) self.initialize_virtualizable_enter() def initialize_withgreenfields(self, original_boxes): ginfo = self.jitdriver_sd.greenfield_info if ginfo is not None: assert self.jitdriver_sd.virtualizable_info is None index = (self.jitdriver_sd.num_green_args + ginfo.red_index) self.virtualizable_boxes = [original_boxes[index]] def initialize_virtualizable_enter(self): vinfo = self.jitdriver_sd.virtualizable_info virtualizable_box = self.virtualizable_boxes[-1] virtualizable = vinfo.unwrap_virtualizable_box(virtualizable_box) vinfo.clear_vable_token(virtualizable) def vable_and_vrefs_before_residual_call(self): vrefinfo = self.staticdata.virtualref_info for i in range(1, len(self.virtualref_boxes), 2): vrefbox = self.virtualref_boxes[i] vref = vrefbox.getref_base() vrefinfo.tracing_before_residual_call(vref) # the FORCE_TOKEN is already set at runtime in each vref when # it is created, by optimizeopt.py. # vinfo = self.jitdriver_sd.virtualizable_info if vinfo is not None: virtualizable_box = self.virtualizable_boxes[-1] virtualizable = vinfo.unwrap_virtualizable_box(virtualizable_box) vinfo.tracing_before_residual_call(virtualizable) # force_token_box = history.BoxPtr() self.history.record(rop.FORCE_TOKEN, [], force_token_box) self.history.record(rop.SETFIELD_GC, [virtualizable_box, force_token_box], None, descr=vinfo.vable_token_descr) def vrefs_after_residual_call(self): vrefinfo = self.staticdata.virtualref_info for i in range(0, len(self.virtualref_boxes), 2): vrefbox = self.virtualref_boxes[i+1] vref = vrefbox.getref_base() if vrefinfo.tracing_after_residual_call(vref): # this vref was really a virtual_ref, but it escaped # during this CALL_MAY_FORCE. Mark this fact by # generating a VIRTUAL_REF_FINISH on it and replacing # it by ConstPtr(NULL). self.stop_tracking_virtualref(i) def vable_after_residual_call(self, funcbox): vinfo = self.jitdriver_sd.virtualizable_info if vinfo is not None: virtualizable_box = self.virtualizable_boxes[-1] virtualizable = vinfo.unwrap_virtualizable_box(virtualizable_box) if vinfo.tracing_after_residual_call(virtualizable): # the virtualizable escaped during CALL_MAY_FORCE. self.load_fields_from_virtualizable() target_name = self.staticdata.get_name_from_address(funcbox.getaddr()) if target_name: target_name = "ConstClass(%s)" % target_name else: target_name = str(funcbox.getaddr()) debug_print('vable escaped during a call in %s to %s' % ( self.framestack[-1].jitcode.name, target_name )) raise SwitchToBlackhole(Counters.ABORT_ESCAPE, raising_exception=True) # ^^^ we set 'raising_exception' to True because we must still # have the eventual exception raised (this is normally done # after the call to vable_after_residual_call()). def stop_tracking_virtualref(self, i): virtualbox = self.virtualref_boxes[i] vrefbox = self.virtualref_boxes[i+1] # record VIRTUAL_REF_FINISH just before the current CALL_MAY_FORCE call_may_force_op = self.history.operations.pop() assert call_may_force_op.getopnum() == rop.CALL_MAY_FORCE self.history.record(rop.VIRTUAL_REF_FINISH, [vrefbox, virtualbox], None) self.history.operations.append(call_may_force_op) # mark by replacing it with ConstPtr(NULL) self.virtualref_boxes[i+1] = self.cpu.ts.CONST_NULL def handle_possible_exception(self): if self.last_exc_value_box is not None: exception_box = self.cpu.ts.cls_of_box(self.last_exc_value_box) op = self.generate_guard(rop.GUARD_EXCEPTION, None, [exception_box]) assert op is not None op.result = self.last_exc_value_box self.class_of_last_exc_is_const = True self.finishframe_exception() else: self.generate_guard(rop.GUARD_NO_EXCEPTION, None, []) def handle_possible_overflow_error(self): if self.last_exc_value_box is not None: self.generate_guard(rop.GUARD_OVERFLOW, None) assert isinstance(self.last_exc_value_box, Const) assert self.class_of_last_exc_is_const self.finishframe_exception() else: self.generate_guard(rop.GUARD_NO_OVERFLOW, None) def assert_no_exception(self): assert self.last_exc_value_box is None def rebuild_state_after_failure(self, resumedescr, deadframe): vinfo = self.jitdriver_sd.virtualizable_info ginfo = self.jitdriver_sd.greenfield_info self.framestack = [] boxlists = resume.rebuild_from_resumedata(self, resumedescr, deadframe, vinfo, ginfo) inputargs_and_holes, virtualizable_boxes, virtualref_boxes = boxlists # # virtual refs: make the vrefs point to the freshly allocated virtuals self.virtualref_boxes = virtualref_boxes vrefinfo = self.staticdata.virtualref_info for i in range(0, len(virtualref_boxes), 2): virtualbox = virtualref_boxes[i] vrefbox = virtualref_boxes[i+1] vrefinfo.continue_tracing(vrefbox.getref_base(), virtualbox.getref_base()) # # virtualizable: synchronize the real virtualizable and the local # boxes, in whichever direction is appropriate if vinfo is not None: self.virtualizable_boxes = virtualizable_boxes # just jumped away from assembler (case 4 in the comment in # virtualizable.py) into tracing (case 2); if we get the # virtualizable from somewhere strange it might not be forced, # do it virtualizable_box = self.virtualizable_boxes[-1] virtualizable = vinfo.unwrap_virtualizable_box(virtualizable_box) if vinfo.is_token_nonnull_gcref(virtualizable): vinfo.reset_token_gcref(virtualizable) # fill the virtualizable with the local boxes self.synchronize_virtualizable() # elif self.jitdriver_sd.greenfield_info: self.virtualizable_boxes = virtualizable_boxes else: assert not virtualizable_boxes # return inputargs_and_holes def check_synchronized_virtualizable(self): if not we_are_translated(): vinfo = self.jitdriver_sd.virtualizable_info virtualizable_box = self.virtualizable_boxes[-1] virtualizable = vinfo.unwrap_virtualizable_box(virtualizable_box) vinfo.check_boxes(virtualizable, self.virtualizable_boxes) def synchronize_virtualizable(self): vinfo = self.jitdriver_sd.virtualizable_info virtualizable_box = self.virtualizable_boxes[-1] virtualizable = vinfo.unwrap_virtualizable_box(virtualizable_box) vinfo.write_boxes(virtualizable, self.virtualizable_boxes) def load_fields_from_virtualizable(self): # Force a reload of the virtualizable fields into the local # boxes (called only in escaping cases). Only call this function # just before SwitchToBlackhole. vinfo = self.jitdriver_sd.virtualizable_info if vinfo is not None: virtualizable_box = self.virtualizable_boxes[-1] virtualizable = vinfo.unwrap_virtualizable_box(virtualizable_box) self.virtualizable_boxes = vinfo.read_boxes(self.cpu, virtualizable) self.virtualizable_boxes.append(virtualizable_box) def gen_store_back_in_vable(self, box): vinfo = self.jitdriver_sd.virtualizable_info if vinfo is not None: # xxx only write back the fields really modified vbox = self.virtualizable_boxes[-1] if vbox is not box: # ignore the hint on non-standard virtualizable # specifically, ignore it on a virtual return if self.forced_virtualizable is not None: # this can happen only in strange cases, but we don't care # it was already forced return self.forced_virtualizable = vbox for i in range(vinfo.num_static_extra_boxes): fieldbox = self.virtualizable_boxes[i] descr = vinfo.static_field_descrs[i] self.execute_and_record(rop.SETFIELD_GC, descr, vbox, fieldbox) i = vinfo.num_static_extra_boxes virtualizable = vinfo.unwrap_virtualizable_box(vbox) for k in range(vinfo.num_arrays): descr = vinfo.array_field_descrs[k] abox = self.execute_and_record(rop.GETFIELD_GC, descr, vbox) descr = vinfo.array_descrs[k] for j in range(vinfo.get_array_length(virtualizable, k)): itembox = self.virtualizable_boxes[i] i += 1 self.execute_and_record(rop.SETARRAYITEM_GC, descr, abox, ConstInt(j), itembox) assert i + 1 == len(self.virtualizable_boxes) # we're during tracing, so we should not execute it self.history.record(rop.SETFIELD_GC, [vbox, self.cpu.ts.CONST_NULL], None, descr=vinfo.vable_token_descr) def replace_box(self, oldbox, newbox): assert isinstance(oldbox, Box) for frame in self.framestack: frame.replace_active_box_in_frame(oldbox, newbox) boxes = self.virtualref_boxes for i in range(len(boxes)): if boxes[i] is oldbox: boxes[i] = newbox if (self.jitdriver_sd.virtualizable_info is not None or self.jitdriver_sd.greenfield_info is not None): boxes = self.virtualizable_boxes for i in range(len(boxes)): if boxes[i] is oldbox: boxes[i] = newbox self.heapcache.replace_box(oldbox, newbox) def find_biggest_function(self): start_stack = [] max_size = 0 max_key = None for pair in self.portal_trace_positions: key, pos = pair if key is not None: start_stack.append(pair) else: greenkey, startpos = start_stack.pop() size = pos - startpos if size > max_size: max_size = size max_key = greenkey if start_stack: key, pos = start_stack[0] size = len(self.history.operations) - pos if size > max_size: max_size = size max_key = key return max_key def record_result_of_call_pure(self, resbox): """ Patch a CALL into a CALL_PURE. """ op = self.history.operations[-1] assert op.getopnum() == rop.CALL resbox_as_const = resbox.constbox() for i in range(op.numargs()): if not isinstance(op.getarg(i), Const): break else: # all-constants: remove the CALL operation now and propagate a # constant result self.history.operations.pop() return resbox_as_const # not all constants (so far): turn CALL into CALL_PURE, which might # be either removed later by optimizeopt or turned back into CALL. arg_consts = [a.constbox() for a in op.getarglist()] self.call_pure_results[arg_consts] = resbox_as_const newop = op.copy_and_change(rop.CALL_PURE, args=op.getarglist()) self.history.operations[-1] = newop return resbox def direct_assembler_call(self, targetjitdriver_sd): """ Generate a direct call to assembler for portal entry point, patching the CALL_MAY_FORCE that occurred just now. """ op = self.history.operations.pop() assert op.getopnum() == rop.CALL_MAY_FORCE num_green_args = targetjitdriver_sd.num_green_args arglist = op.getarglist() greenargs = arglist[1:num_green_args+1] args = arglist[num_green_args+1:] assert len(args) == targetjitdriver_sd.num_red_args warmrunnerstate = targetjitdriver_sd.warmstate token = warmrunnerstate.get_assembler_token(greenargs) op = op.copy_and_change(rop.CALL_ASSEMBLER, args=args, descr=token) self.history.operations.append(op) # # To fix an obscure issue, make sure the vable stays alive # longer than the CALL_ASSEMBLER operation. We do it by # inserting explicitly an extra KEEPALIVE operation. jd = token.outermost_jitdriver_sd if jd.index_of_virtualizable >= 0: return args[jd.index_of_virtualizable] else: return None def direct_libffi_call(self): """Generate a direct call to C code, patching the CALL_MAY_FORCE to jit_ffi_call() that occurred just now. """ # an 'assert' that constant-folds away the rest of this function # if the codewriter didn't produce any OS_LIBFFI_CALL at all. assert self.staticdata.has_libffi_call # from rpython.rtyper.lltypesystem import llmemory from rpython.rlib.jit_libffi import CIF_DESCRIPTION_P from rpython.jit.backend.llsupport.ffisupport import get_arg_descr # num_extra_guards = 0 while True: op = self.history.operations[-1-num_extra_guards] if op.getopnum() == rop.CALL_MAY_FORCE: break assert op.is_guard() num_extra_guards += 1 # box_cif_description = op.getarg(1) if not isinstance(box_cif_description, ConstInt): return cif_description = box_cif_description.getint() cif_description = llmemory.cast_int_to_adr(cif_description) cif_description = llmemory.cast_adr_to_ptr(cif_description, CIF_DESCRIPTION_P) extrainfo = op.getdescr().get_extra_info() calldescr = self.cpu.calldescrof_dynamic(cif_description, extrainfo) if calldescr is None: return # extra_guards = [] for i in range(num_extra_guards): extra_guards.append(self.history.operations.pop()) extra_guards.reverse() # box_exchange_buffer = op.getarg(3) self.history.operations.pop() arg_boxes = [] for i in range(cif_description.nargs): kind, descr, itemsize = get_arg_descr(self.cpu, cif_description.atypes[i]) if kind == 'i': box_arg = history.BoxInt() elif kind == 'f': box_arg = history.BoxFloat() else: assert kind == 'v' continue ofs = cif_description.exchange_args[i] assert ofs % itemsize == 0 # alignment check self.history.record(rop.GETARRAYITEM_RAW, [box_exchange_buffer, ConstInt(ofs // itemsize)], box_arg, descr) arg_boxes.append(box_arg) # box_result = op.result self.history.record(rop.CALL_RELEASE_GIL, [op.getarg(2)] + arg_boxes, box_result, calldescr) # self.history.operations.extend(extra_guards) # # note that the result is written back to the exchange_buffer by the # special op libffi_save_result_{int,float} def direct_call_release_gil(self): op = self.history.operations.pop() assert op.opnum == rop.CALL_MAY_FORCE descr = op.getdescr() effectinfo = descr.get_extra_info() realfuncaddr = effectinfo.call_release_gil_target funcbox = ConstInt(heaptracker.adr2int(realfuncaddr)) self.history.record(rop.CALL_RELEASE_GIL, [funcbox] + op.getarglist()[1:], op.result, descr) if not we_are_translated(): # for llgraph descr._original_func_ = op.getarg(0).value # ____________________________________________________________ class ChangeFrame(jitexc.JitException): """Raised after we mutated metainterp.framestack, in order to force it to reload the current top-of-stack frame that gets interpreted.""" class SwitchToBlackhole(jitexc.JitException): def __init__(self, reason, raising_exception=False): self.reason = reason self.raising_exception = raising_exception # ^^^ must be set to True if the SwitchToBlackhole is raised at a # point where the exception on metainterp.last_exc_value_box # is supposed to be raised. The default False means that it # should just be copied into the blackhole interp, but not raised. # ____________________________________________________________ def _get_opimpl_method(name, argcodes): from rpython.jit.metainterp.blackhole import signedord # def handler(self, position): assert position >= 0 args = () next_argcode = 0 code = self.bytecode orgpc = position position += 1 for argtype in argtypes: if argtype == "box": # a box, of whatever type argcode = argcodes[next_argcode] next_argcode = next_argcode + 1 if argcode == 'i': value = self.registers_i[ord(code[position])] elif argcode == 'c': value = ConstInt(signedord(code[position])) elif argcode == 'r': value = self.registers_r[ord(code[position])] elif argcode == 'f': value = self.registers_f[ord(code[position])] else: raise AssertionError("bad argcode") position += 1 elif argtype == "descr" or argtype == "jitcode": assert argcodes[next_argcode] == 'd' next_argcode = next_argcode + 1 index = ord(code[position]) | (ord(code[position+1])<<8) value = self.metainterp.staticdata.opcode_descrs[index] if argtype == "jitcode": assert isinstance(value, JitCode) position += 2 elif argtype == "label": assert argcodes[next_argcode] == 'L' next_argcode = next_argcode + 1 value = ord(code[position]) | (ord(code[position+1])<<8) position += 2 elif argtype == "boxes": # a list of boxes of some type length = ord(code[position]) value = [None] * length self.prepare_list_of_boxes(value, 0, position, argcodes[next_argcode]) next_argcode = next_argcode + 1 position += 1 + length elif argtype == "boxes2": # two lists of boxes merged into one length1 = ord(code[position]) position2 = position + 1 + length1 length2 = ord(code[position2]) value = [None] * (length1 + length2) self.prepare_list_of_boxes(value, 0, position, argcodes[next_argcode]) self.prepare_list_of_boxes(value, length1, position2, argcodes[next_argcode + 1]) next_argcode = next_argcode + 2 position = position2 + 1 + length2 elif argtype == "boxes3": # three lists of boxes merged into one length1 = ord(code[position]) position2 = position + 1 + length1 length2 = ord(code[position2]) position3 = position2 + 1 + length2 length3 = ord(code[position3]) value = [None] * (length1 + length2 + length3) self.prepare_list_of_boxes(value, 0, position, argcodes[next_argcode]) self.prepare_list_of_boxes(value, length1, position2, argcodes[next_argcode + 1]) self.prepare_list_of_boxes(value, length1 + length2, position3, argcodes[next_argcode + 2]) next_argcode = next_argcode + 3 position = position3 + 1 + length3 elif argtype == "orgpc": value = orgpc elif argtype == "int": argcode = argcodes[next_argcode] next_argcode = next_argcode + 1 if argcode == 'i': value = self.registers_i[ord(code[position])].getint() elif argcode == 'c': value = signedord(code[position]) else: raise AssertionError("bad argcode") position += 1 elif argtype == "jitcode_position": value = position else: raise AssertionError("bad argtype: %r" % (argtype,)) args += (value,) # num_return_args = len(argcodes) - next_argcode assert num_return_args == 0 or num_return_args == 2 if num_return_args: # Save the type of the resulting box. This is needed if there is # a get_list_of_active_boxes(). See comments there. self._result_argcode = argcodes[next_argcode + 1] position += 1 else: self._result_argcode = 'v' self.pc = position # if not we_are_translated(): if self.debug: print '\tpyjitpl: %s(%s)' % (name, ', '.join(map(repr, args))), try: resultbox = unboundmethod(self, *args) except Exception, e: if self.debug: print '-> %s!' % e.__class__.__name__ raise if num_return_args == 0: if self.debug: print assert resultbox is None else: if self.debug: print '-> %r' % (resultbox,) assert argcodes[next_argcode] == '>' result_argcode = argcodes[next_argcode + 1] assert resultbox.type == {'i': history.INT, 'r': history.REF, 'f': history.FLOAT}[result_argcode] else: resultbox = unboundmethod(self, *args) # if resultbox is not None: self.make_result_of_lastop(resultbox) elif not we_are_translated(): assert self._result_argcode in 'v?' # unboundmethod = getattr(MIFrame, 'opimpl_' + name).im_func argtypes = unrolling_iterable(unboundmethod.argtypes) handler.func_name = 'handler_' + name return handler def put_back_list_of_boxes3(frame, position, newvalue): code = frame.bytecode length1 = ord(code[position]) position2 = position + 1 + length1 length2 = ord(code[position2]) position3 = position2 + 1 + length2 length3 = ord(code[position3]) assert len(newvalue) == length1 + length2 + length3 frame._put_back_list_of_boxes(newvalue, 0, position) frame._put_back_list_of_boxes(newvalue, length1, position2) frame._put_back_list_of_boxes(newvalue, length1 + length2, position3)