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import sys
from rpython.rtyper.lltypesystem import lltype, llmemory, rstr
from rpython.rtyper.lltypesystem.lloperation import llop
from rpython.rtyper.annlowlevel import llhelper
from rpython.jit.backend.llsupport import jitframe, gc, descr
from rpython.jit.backend.llsupport import symbolic
from rpython.jit.metainterp.gc import get_description
from rpython.jit.metainterp.history import ConstPtr
from rpython.jit.metainterp.resoperation import get_deep_immutable_oplist, rop,\
ResOperation, InputArgRef
from rpython.rlib.rarithmetic import is_valid_int, r_uint
def test_boehm():
gc_ll_descr = gc.GcLLDescr_boehm(None, None, None)
#
record = []
prev_malloc_fn_ptr = gc_ll_descr.malloc_fn_ptr
def my_malloc_fn_ptr(size):
p = prev_malloc_fn_ptr(size)
record.append((size, p))
return p
gc_ll_descr.malloc_fn_ptr = my_malloc_fn_ptr
#
# ---------- gc_malloc ----------
S = lltype.GcStruct('S', ('x', lltype.Signed))
sizedescr = descr.get_size_descr(gc_ll_descr, S)
p = gc_ll_descr.gc_malloc(sizedescr)
assert record == [(sizedescr.size, p)]
del record[:]
# ---------- gc_malloc_array ----------
A = lltype.GcArray(lltype.Signed)
arraydescr = descr.get_array_descr(gc_ll_descr, A)
p = gc_ll_descr.gc_malloc_array(10, arraydescr)
assert record == [(arraydescr.basesize +
10 * arraydescr.itemsize, p)]
del record[:]
# ---------- gc_malloc_str ----------
p = gc_ll_descr.gc_malloc_str(10)
basesize, itemsize, ofs_length = symbolic.get_array_token(rstr.STR, False)
assert record == [(basesize + 10 * itemsize, p)]
del record[:]
# ---------- gc_malloc_unicode ----------
p = gc_ll_descr.gc_malloc_unicode(10)
basesize, itemsize, ofs_length = symbolic.get_array_token(rstr.UNICODE,
False)
assert record == [(basesize + 10 * itemsize, p)]
del record[:]
# ____________________________________________________________
class FakeLLOp(object):
def __init__(self):
self.record = []
def _malloc(self, type_id, size):
tid = llop.combine_ushort(lltype.Signed, type_id, 0)
x = llmemory.raw_malloc(self.gcheaderbuilder.size_gc_header + size)
x += self.gcheaderbuilder.size_gc_header
return x, tid
def do_malloc_fixedsize(self, RESTYPE, type_id, size,
has_finalizer, has_light_finalizer,
contains_weakptr):
assert not contains_weakptr
assert not has_finalizer
assert not has_light_finalizer
p, tid = self._malloc(type_id, size)
p = llmemory.cast_adr_to_ptr(p, RESTYPE)
self.record.append(("fixedsize", repr(size), tid, p))
return p
do_malloc_fixedsize_clear = do_malloc_fixedsize
def do_malloc_varsize(self, RESTYPE, type_id, length, size,
itemsize, offset_to_length):
p, tid = self._malloc(type_id, size + itemsize * length)
(p + offset_to_length).signed[0] = length
p = llmemory.cast_adr_to_ptr(p, RESTYPE)
self.record.append(("varsize", tid, length,
repr(size), repr(itemsize),
repr(offset_to_length), p))
return p
do_malloc_varsize_clear = do_malloc_varsize
def _write_barrier_failing_case(self, adr_struct):
self.record.append(('barrier', adr_struct))
def get_write_barrier_failing_case(self, FPTRTYPE):
return llhelper(FPTRTYPE, self._write_barrier_failing_case)
_have_wb_from_array = False
def _write_barrier_from_array_failing_case(self, adr_struct, v_index):
self.record.append(('barrier_from_array', adr_struct, v_index))
def get_write_barrier_from_array_failing_case(self, FPTRTYPE):
if self._have_wb_from_array:
return llhelper(FPTRTYPE,
self._write_barrier_from_array_failing_case)
else:
return lltype.nullptr(FPTRTYPE.TO)
class TestFramework(object):
gc = 'minimark'
def setup_method(self, meth):
class config_(object):
class translation(object):
gc = self.gc
gcrootfinder = 'shadowstack'
gctransformer = 'framework'
gcremovetypeptr = False
class FakeTranslator(object):
config = config_
class FakeCPU(object):
def cast_adr_to_int(self, adr):
if not adr:
return 0
try:
ptr = llmemory.cast_adr_to_ptr(adr, gc_ll_descr.WB_FUNCPTR)
assert ptr._obj._callable == \
llop1._write_barrier_failing_case
return 42
except lltype.InvalidCast:
ptr = llmemory.cast_adr_to_ptr(
adr, gc_ll_descr.WB_ARRAY_FUNCPTR)
assert ptr._obj._callable == \
llop1._write_barrier_from_array_failing_case
return 43
gcdescr = get_description(config_)
llop1 = FakeLLOp()
gc_ll_descr = gc.GcLLDescr_framework(gcdescr, FakeTranslator(), None,
llop1)
gc_ll_descr.initialize()
llop1.gcheaderbuilder = gc_ll_descr.gcheaderbuilder
self.llop1 = llop1
self.gc_ll_descr = gc_ll_descr
self.fake_cpu = FakeCPU()
def test_gc_malloc(self):
S = lltype.GcStruct('S', ('x', lltype.Signed))
sizedescr = descr.get_size_descr(self.gc_ll_descr, S)
p = self.gc_ll_descr.gc_malloc(sizedescr)
assert lltype.typeOf(p) == llmemory.GCREF
assert self.llop1.record == [("fixedsize", repr(sizedescr.size),
sizedescr.tid, p)]
def test_gc_malloc_array(self):
A = lltype.GcArray(lltype.Signed)
arraydescr = descr.get_array_descr(self.gc_ll_descr, A)
p = self.gc_ll_descr.gc_malloc_array(10, arraydescr)
assert self.llop1.record == [("varsize", arraydescr.tid, 10,
repr(arraydescr.basesize),
repr(arraydescr.itemsize),
repr(arraydescr.lendescr.offset),
p)]
def test_gc_malloc_str(self):
p = self.gc_ll_descr.gc_malloc_str(10)
type_id = self.gc_ll_descr.layoutbuilder.get_type_id(rstr.STR)
tid = llop.combine_ushort(lltype.Signed, type_id, 0)
basesize, itemsize, ofs_length = symbolic.get_array_token(rstr.STR,
True)
assert self.llop1.record == [("varsize", tid, 10,
repr(basesize), repr(itemsize),
repr(ofs_length), p)]
def test_gc_malloc_unicode(self):
p = self.gc_ll_descr.gc_malloc_unicode(10)
type_id = self.gc_ll_descr.layoutbuilder.get_type_id(rstr.UNICODE)
tid = llop.combine_ushort(lltype.Signed, type_id, 0)
basesize, itemsize, ofs_length = symbolic.get_array_token(rstr.UNICODE,
True)
assert self.llop1.record == [("varsize", tid, 10,
repr(basesize), repr(itemsize),
repr(ofs_length), p)]
def test_gen_write_barrier(self):
gc_ll_descr = self.gc_ll_descr
llop1 = self.llop1
#
rewriter = gc.GcRewriterAssembler(gc_ll_descr, None)
newops = rewriter._newops
v_base = InputArgRef()
rewriter.gen_write_barrier(v_base)
assert llop1.record == []
assert len(newops) == 1
assert newops[0].getopnum() == rop.COND_CALL_GC_WB
assert newops[0].getarg(0) == v_base
wbdescr = newops[0].getdescr()
assert is_valid_int(wbdescr.jit_wb_if_flag)
assert is_valid_int(wbdescr.jit_wb_if_flag_byteofs)
assert is_valid_int(wbdescr.jit_wb_if_flag_singlebyte)
class TestFrameworkMiniMark(TestFramework):
gc = 'minimark'
def test_custom_tracer():
def indexof(no):
return (frame_adr + jitframe.getofs('jf_frame') +
jitframe.BASEITEMOFS + jitframe.SIGN_SIZE * no)
frame_info = lltype.malloc(jitframe.JITFRAMEINFO, zero=True, flavor='raw')
frame = lltype.malloc(jitframe.JITFRAME, 200, zero=True)
frame.jf_frame_info = frame_info
frame.jf_gcmap = lltype.malloc(jitframe.GCMAP, 4, flavor='raw')
if sys.maxint == 2**31 - 1:
max = r_uint(2 ** 31)
else:
max = r_uint(2 ** 63)
frame.jf_gcmap[0] = r_uint(1 | 2 | 8 | 32 | 128) | max
frame.jf_gcmap[1] = r_uint(0)
frame.jf_gcmap[2] = r_uint(2 | 16 | 32 | 128)
frame.jf_gcmap[3] = r_uint(0)
frame_adr = llmemory.cast_ptr_to_adr(frame)
#
all_addrs = []
class FakeGC:
def _trace_callback(self, callback, arg1, arg2, addr):
assert callback == "hello"
assert arg1 == "world"
assert arg2 == "foo"
all_addrs.append(addr)
jitframe.jitframe_trace(FakeGC(), frame_adr, "hello", "world", "foo")
#
counter = 0
for name in jitframe.JITFRAME._names:
TP = getattr(jitframe.JITFRAME, name)
if isinstance(TP, lltype.Ptr) and TP.TO._gckind == 'gc':
assert all_addrs[counter] == frame_adr + jitframe.getofs(name)
counter += 1
assert counter == 5
# gcpattern
assert all_addrs[5] == indexof(0)
assert all_addrs[6] == indexof(1)
assert all_addrs[7] == indexof(3)
assert all_addrs[8] == indexof(5)
assert all_addrs[9] == indexof(7)
if sys.maxint == 2**31 - 1:
assert all_addrs[10] == indexof(31)
assert all_addrs[11] == indexof(65)
assert all_addrs[12] == indexof(68)
assert all_addrs[13] == indexof(69)
assert all_addrs[14] == indexof(71)
else:
assert all_addrs[10] == indexof(63)
assert all_addrs[11] == indexof(129)
assert all_addrs[12] == indexof(132)
assert all_addrs[13] == indexof(133)
assert all_addrs[14] == indexof(135)
assert len(all_addrs) == 15
lltype.free(frame_info, flavor='raw')
lltype.free(frame.jf_gcmap, flavor='raw')
def test_custom_tracer_2():
frame_info = lltype.malloc(jitframe.JITFRAMEINFO, zero=True, flavor='raw')
frame = lltype.malloc(jitframe.JITFRAME, 200, zero=True)
frame.jf_frame_info = frame_info
frame.jf_gcmap = lltype.malloc(jitframe.GCMAP, 3, flavor='raw')
frame.jf_gcmap[0] = r_uint(18446744073441116160)
frame.jf_gcmap[1] = r_uint(18446740775107559407)
frame.jf_gcmap[2] = r_uint(3)
frame_adr = llmemory.cast_ptr_to_adr(frame)
class FakeGC:
def _trace_callback(self, callback, arg1, arg2, addr):
assert callback == "hello"
assert arg1 == "world"
assert arg2 == "foo"
jitframe.jitframe_trace(FakeGC(), frame_adr, "hello", "world", "foo")
# assert did not hang
lltype.free(frame_info, flavor='raw')
lltype.free(frame.jf_gcmap, flavor='raw')
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