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Add PYTHONMALLOC env var

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Issue #26516:

* Add PYTHONMALLOC environment variable to set the Python memory
  allocators and/or install debug hooks.
* PyMem_SetupDebugHooks() can now also be used on Python compiled in release
  mode.
* The PYTHONMALLOCSTATS environment variable can now also be used on Python
  compiled in release mode. It now has no effect if set to an empty string.
* In debug mode, debug hooks are now also installed on Python memory allocators
  when Python is configured without pymalloc.
This commit is contained in:
Victor Stinner 2016-03-14 12:04:26 +01:00
parent c877658d1f
commit 34be807ca4
13 changed files with 383 additions and 90 deletions
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9
Programs/python.c
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@ -24,6 +24,9 @@ main(int argc, char **argv)
int i, res;
char *oldloc;
/* Force malloc() allocator to bootstrap Python */
(void)_PyMem_SetupAllocators("malloc");
argv_copy = (wchar_t **)PyMem_RawMalloc(sizeof(wchar_t*) * (argc+1));
argv_copy2 = (wchar_t **)PyMem_RawMalloc(sizeof(wchar_t*) * (argc+1));
if (!argv_copy || !argv_copy2) {
@ -62,7 +65,13 @@ main(int argc, char **argv)
setlocale(LC_ALL, oldloc);
PyMem_RawFree(oldloc);
res = Py_Main(argc, argv_copy);
/* Force again malloc() allocator to release memory blocks allocated
before Py_Main() */
(void)_PyMem_SetupAllocators("malloc");
for (i = 0; i < argc; i++) {
PyMem_RawFree(argv_copy2[i]);
}