[pypy-commit] pypy default: Finish to fix the remaining cases. A bit hard to test for all cases...
arigo
noreply at buildbot.pypy.org
Tue Aug 2 19:54:04 CEST 2011
Author: Armin Rigo <arigo at tunes.org>
Branch:
Changeset: r46214:41311fe92f74
Date: 2011-08-02 18:09 +0200
http://bitbucket.org/pypy/pypy/changeset/41311fe92f74/
Log: Finish to fix the remaining cases. A bit hard to test for all
cases...
diff --git a/pypy/jit/backend/llsupport/gc.py b/pypy/jit/backend/llsupport/gc.py
--- a/pypy/jit/backend/llsupport/gc.py
+++ b/pypy/jit/backend/llsupport/gc.py
@@ -544,18 +544,19 @@
assert self.GCClass.inline_simple_malloc
assert self.GCClass.inline_simple_malloc_varsize
- # make a malloc function, with three arguments
+ # make a malloc function, with two arguments
def malloc_basic(size, tid):
type_id = llop.extract_ushort(llgroup.HALFWORD, tid)
has_finalizer = bool(tid & (1<<llgroup.HALFSHIFT))
check_typeid(type_id)
- try:
- res = llop1.do_malloc_fixedsize_clear(llmemory.GCREF,
- type_id, size, True,
- has_finalizer, False)
- except MemoryError:
- fatalerror("out of memory (from JITted code)")
- res = lltype.nullptr(llmemory.GCREF.TO)
+ res = llop1.do_malloc_fixedsize_clear(llmemory.GCREF,
+ type_id, size, True,
+ has_finalizer, False)
+ # In case the operation above failed, we are returning NULL
+ # from this function to assembler. There is also an RPython
+ # exception set, typically MemoryError; but it's easier and
+ # faster to check for the NULL return value, as done by
+ # translator/exceptiontransform.py.
#llop.debug_print(lltype.Void, "\tmalloc_basic", size, type_id,
# "-->", res)
return res
@@ -571,14 +572,10 @@
def malloc_array(itemsize, tid, num_elem):
type_id = llop.extract_ushort(llgroup.HALFWORD, tid)
check_typeid(type_id)
- try:
- return llop1.do_malloc_varsize_clear(
- llmemory.GCREF,
- type_id, num_elem, self.array_basesize, itemsize,
- self.array_length_ofs, True)
- except MemoryError:
- fatalerror("out of memory (from JITted code)")
- return lltype.nullptr(llmemory.GCREF.TO)
+ return llop1.do_malloc_varsize_clear(
+ llmemory.GCREF,
+ type_id, num_elem, self.array_basesize, itemsize,
+ self.array_length_ofs, True)
self.malloc_array = malloc_array
self.GC_MALLOC_ARRAY = lltype.Ptr(lltype.FuncType(
[lltype.Signed] * 3, llmemory.GCREF))
@@ -591,23 +588,15 @@
unicode_type_id = self.layoutbuilder.get_type_id(rstr.UNICODE)
#
def malloc_str(length):
- try:
- return llop1.do_malloc_varsize_clear(
- llmemory.GCREF,
- str_type_id, length, str_basesize, str_itemsize,
- str_ofs_length, True)
- except MemoryError:
- fatalerror("out of memory (from JITted code)")
- return lltype.nullptr(llmemory.GCREF.TO)
+ return llop1.do_malloc_varsize_clear(
+ llmemory.GCREF,
+ str_type_id, length, str_basesize, str_itemsize,
+ str_ofs_length, True)
def malloc_unicode(length):
- try:
- return llop1.do_malloc_varsize_clear(
- llmemory.GCREF,
- unicode_type_id, length, unicode_basesize,unicode_itemsize,
- unicode_ofs_length, True)
- except MemoryError:
- fatalerror("out of memory (from JITted code)")
- return lltype.nullptr(llmemory.GCREF.TO)
+ return llop1.do_malloc_varsize_clear(
+ llmemory.GCREF,
+ unicode_type_id, length, unicode_basesize,unicode_itemsize,
+ unicode_ofs_length, True)
self.malloc_str = malloc_str
self.malloc_unicode = malloc_unicode
self.GC_MALLOC_STR_UNICODE = lltype.Ptr(lltype.FuncType(
@@ -628,16 +617,12 @@
if self.DEBUG:
random_usage_of_xmm_registers()
assert size >= self.minimal_size_in_nursery
- try:
- # NB. although we call do_malloc_fixedsize_clear() here,
- # it's a bit of a hack because we set tid to 0 and may
- # also use it to allocate varsized objects. The tid
- # and possibly the length are both set afterward.
- gcref = llop1.do_malloc_fixedsize_clear(llmemory.GCREF,
- 0, size, True, False, False)
- except MemoryError:
- fatalerror("out of memory (from JITted code)")
- return 0
+ # NB. although we call do_malloc_fixedsize_clear() here,
+ # it's a bit of a hack because we set tid to 0 and may
+ # also use it to allocate varsized objects. The tid
+ # and possibly the length are both set afterward.
+ gcref = llop1.do_malloc_fixedsize_clear(llmemory.GCREF,
+ 0, size, True, False, False)
return rffi.cast(lltype.Signed, gcref)
self.malloc_slowpath = malloc_slowpath
self.MALLOC_SLOWPATH = lltype.FuncType([lltype.Signed], lltype.Signed)
diff --git a/pypy/jit/backend/test/runner_test.py b/pypy/jit/backend/test/runner_test.py
--- a/pypy/jit/backend/test/runner_test.py
+++ b/pypy/jit/backend/test/runner_test.py
@@ -2822,14 +2822,10 @@
inputargs = [i0]
looptoken = LoopToken()
self.cpu.compile_loop(inputargs, operations, looptoken)
- # overflowing values:
- for big in [
- sys.maxint // 4 + 1, # just too large
- int(2*(sys.maxint+1) // 4) + 3, # intmask(this * 4) == 3
- ]:
- self.cpu.set_future_value_int(0, big)
- fail = self.cpu.execute_token(looptoken)
- assert fail.identifier == excdescr.identifier
+ # overflowing value:
+ self.cpu.set_future_value_int(0, sys.maxint // 4 + 1)
+ fail = self.cpu.execute_token(looptoken)
+ assert fail.identifier == excdescr.identifier
class OOtypeBackendTest(BaseBackendTest):
diff --git a/pypy/jit/backend/x86/assembler.py b/pypy/jit/backend/x86/assembler.py
--- a/pypy/jit/backend/x86/assembler.py
+++ b/pypy/jit/backend/x86/assembler.py
@@ -128,9 +128,9 @@
self._build_failure_recovery(True, withfloats=True)
support.ensure_sse2_floats()
self._build_float_constants()
+ self._build_propagate_exception_path()
if gc_ll_descr.get_malloc_slowpath_addr is not None:
self._build_malloc_slowpath()
- self._build_propagate_exception_path()
self._build_stack_check_slowpath()
if gc_ll_descr.gcrootmap:
self._build_release_gil(gc_ll_descr.gcrootmap)
@@ -244,9 +244,27 @@
if self.cpu.supports_floats: # restore the XMM registers
for i in range(self.cpu.NUM_REGS):# from where they were saved
mc.MOVSD_xs(i, (WORD*2)+8*i)
+ #
+ # Note: we check this after the code above, just because the code
+ # above is more than 127 bytes on 64-bits...
+ mc.TEST_rr(eax.value, eax.value)
+ mc.J_il8(rx86.Conditions['Z'], 0) # patched later
+ jz_location = mc.get_relative_pos()
+ #
nursery_free_adr = self.cpu.gc_ll_descr.get_nursery_free_addr()
mc.MOV(edx, heap(nursery_free_adr)) # load this in EDX
mc.RET()
+ #
+ # If the slowpath malloc failed, we raise a MemoryError that
+ # always interrupts the current loop, as a "good enough"
+ # approximation. Also note that we didn't RET from this helper;
+ # but the code we jump to will actually restore the stack
+ # position based on EBP, which will get us out of here for free.
+ offset = mc.get_relative_pos() - jz_location
+ assert 0 < offset <= 127
+ mc.overwrite(jz_location-1, chr(offset))
+ mc.JMP(imm(self.propagate_exception_path))
+ #
rawstart = mc.materialize(self.cpu.asmmemmgr, [])
self.malloc_slowpath2 = rawstart
@@ -1443,7 +1461,7 @@
assert isinstance(loc_vtable, ImmedLoc)
arglocs = arglocs[:-1]
self.call(self.malloc_func_addr, arglocs, eax)
- # xxx ignore NULL returns for now
+ self.propagate_memoryerror_if_eax_is_null()
self.set_vtable(eax, loc_vtable)
def set_vtable(self, loc, loc_vtable):
@@ -1467,14 +1485,17 @@
def genop_new_array(self, op, arglocs, result_loc):
assert result_loc is eax
self.call(self.malloc_array_func_addr, arglocs, eax)
+ self.propagate_memoryerror_if_eax_is_null()
def genop_newstr(self, op, arglocs, result_loc):
assert result_loc is eax
self.call(self.malloc_str_func_addr, arglocs, eax)
+ self.propagate_memoryerror_if_eax_is_null()
def genop_newunicode(self, op, arglocs, result_loc):
assert result_loc is eax
self.call(self.malloc_unicode_func_addr, arglocs, eax)
+ self.propagate_memoryerror_if_eax_is_null()
def propagate_memoryerror_if_eax_is_null(self):
# if self.propagate_exception_path == 0 (tests), this may jump to 0
@@ -1761,10 +1782,8 @@
def generate_propagate_error_64(self):
assert WORD == 8
- mc = self.mc
- startpos = mc.get_relative_pos()
- mc.MOV_ri(X86_64_SCRATCH_REG.value, self.propagate_exception_path)
- mc.JMP_r(X86_64_SCRATCH_REG.value)
+ startpos = self.mc.get_relative_pos()
+ self.mc.JMP(imm(self.propagate_exception_path))
return startpos
def generate_quick_failure(self, guardtok):
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