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from rpython.rtyper.lltypesystem import lltype, rffi
from rpython.rlib import rgc
from rpython.rlib.rvmprof import traceback
from pypy.interpreter.pycode import PyCode
from pypy.module.faulthandler.cintf import pypy_faulthandler_write
from pypy.module.faulthandler.cintf import pypy_faulthandler_write_uint
MAX_STRING_LENGTH = 500
global_buf = lltype.malloc(rffi.CCHARP.TO, MAX_STRING_LENGTH, flavor='raw',
immortal=True, zero=True)
def _dump(fd, s):
assert isinstance(s, str)
l = len(s)
if l >= MAX_STRING_LENGTH:
l = MAX_STRING_LENGTH - 1
i = 0
while i < l:
global_buf[i] = s[i]
i += 1
global_buf[l] = '\x00'
pypy_faulthandler_write(fd, global_buf)
def _dump_nonneg_int(fd, i):
pypy_faulthandler_write_uint(fd, rffi.cast(lltype.Unsigned, i),
rffi.cast(rffi.INT, 1))
def dump_code(pycode, loc, fd):
if pycode is None:
_dump(fd, " File ???")
else:
_dump(fd, ' File "')
_dump(fd, pycode.co_filename)
_dump(fd, '", line ')
_dump_nonneg_int(fd, pycode.co_firstlineno)
_dump(fd, " in ")
_dump(fd, pycode.co_name)
if loc == traceback.LOC_JITTED:
_dump(fd, " [jitted]")
elif loc == traceback.LOC_JITTED_INLINED:
_dump(fd, " [jit inlined]")
_dump(fd, "\n")
@rgc.no_collect
def _dump_callback(fd, array_p, array_length):
"""We are as careful as we can reasonably be here (i.e. not 100%,
but hopefully close enough). In particular, this is written as
RPython but shouldn't allocate anything.
"""
traceback.walk_traceback(PyCode, dump_code, fd, array_p, array_length)
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