STINNER Victor added the comment:
New patch (version 2):
- an hash table entry can now contain the data directly instead of a pointer to
the data
- _tracemalloc._get_stats() copies the hash table to not have to lock the hash
table too long, which will be especially useful for TRACE_RAW_MALLOC
- Add get_object_trace() function which returns a namedtuple
- get_process_memory() returns a namedtuple
- DisplayGarbage class has been removed: the PEP 442 has been implemented, it
is no more interesting to trace uncollectable objects because they became very
rare. If you still want to do that, get_object_trace() is available
TODO:
- TRACE_RAW_MALLOC define is still disabled because it introduces a deadlock
when PyMem_RawMalloc() is called indirectly by Py_NewInterpreter()
- minor pending FIXME in the code
- review the high level API: add an helper to build a diff between two
snapshots and drop colors (not portable)?
test_capi deadlock with TRACE_RAW_MALLOC:
test_subinterps (test.test_capi.SubinterpreterTest) ... ^C
Program received signal SIGINT, Interrupt.
0xb7fdd424 in __kernel_vsyscall ()
(gdb) where
...
#2 0x081abc1c in PyCOND_TIMEDWAIT (cond=0x83470e0, mut=0x8347110, us=5000)
at Python/condvar.h:103
#3 0x081ac55c in take_gil (tstate=0x8349c78) at Python/ceval_gil.h:224
#4 0x081ad0a9 in PyEval_RestoreThread (tstate=0x8349c78) at
Python/ceval.c:443
#5 0x081f08e3 in PyGILState_Ensure () at Python/pystate.c:786
#6 0x0808df1b in trace_get_filename (trace=0x84c26b8, gil_held=0) at
./Modules/_tracemalloc.c:555
#7 0x0808e314 in trace_log_alloc (ptr=0x84c9f18, size=52, gil_held=0) at
./Modules/_tracemalloc.c:698
#8 0x0808e449 in trace_malloc (ctx=0x8342890, size=52, gil_held=0) at
./Modules/_tracemalloc.c:744
#9 0x0808e5b8 in trace_raw_malloc (ctx=0x8342890, size=52) at
./Modules/_tracemalloc.c:811
#10 0x0805d32a in PyMem_RawMalloc (size=52) at Objects/obmalloc.c:256
#11 0x081eeb79 in PyInterpreterState_New () at Python/pystate.c:63
#12 0x08060c8b in Py_NewInterpreter () at Python/pythonrun.c:700
#13 0xb74d4b90 in run_in_subinterp ()
#14 0x080e9e7a in PyCFunction_Call ()
...
----------
Added file: http://bugs.python.org/file31545/tracemalloc-2.patch
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue18874>
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