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from rpython.rtyper.lltypesystem import lltype, llmemory, rffi
from rpython.jit.backend.llsupport.gcreftracer import GCREFTRACER, gcrefs_trace
from rpython.jit.backend.llsupport.gcreftracer import make_framework_tracer
from rpython.jit.backend.llsupport.gcreftracer import make_boehm_tracer
class FakeGC:
def __init__(self):
self.called = []
def _trace_callback(self, callback, arg, addr):
assert callback == "callback"
assert arg == "arg"
assert lltype.typeOf(addr) == llmemory.Address
self.called.append(addr)
def test_gcreftracer():
a = lltype.malloc(rffi.CArray(lltype.Signed), 3, flavor='raw')
a[0] = 123
a[1] = 456
a[2] = 789
tr = lltype.malloc(GCREFTRACER)
tr.array_base_addr = base = rffi.cast(lltype.Signed, a)
tr.array_length = 3
gc = FakeGC()
gcrefs_trace(gc, llmemory.cast_ptr_to_adr(tr), "callback", "arg")
assert len(gc.called) == 3
WORD = rffi.sizeof(lltype.Signed)
for i in range(3):
assert gc.called[i] == rffi.cast(llmemory.Address, base + i * WORD)
lltype.free(a, flavor='raw')
def test_make_framework_tracer():
a = lltype.malloc(rffi.CArray(lltype.Signed), 3, flavor='raw')
base = rffi.cast(lltype.Signed, a)
tr = make_framework_tracer(base, [123, 456, 789])
assert a[0] == 123
assert a[1] == 456
assert a[2] == 789
assert tr.array_base_addr == base
assert tr.array_length == 3
lltype.free(a, flavor='raw')
def test_make_boehm_tracer():
a = lltype.malloc(rffi.CArray(lltype.Signed), 3, flavor='raw')
base = rffi.cast(lltype.Signed, a)
lst = [123, 456, 789]
tr = make_boehm_tracer(base, lst)
assert a[0] == 123
assert a[1] == 456
assert a[2] == 789
assert tr is lst
lltype.free(a, flavor='raw')
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