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PyMem_Malloc() now uses the fast pymalloc allocator

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Issue #26249: PyMem_Malloc() allocator family now uses the pymalloc allocator
rather than system malloc(). Applications calling PyMem_Malloc() without
holding the GIL can now crash: use PYTHONMALLOC=debug environment variable to
validate the usage of memory allocators in your application.
This commit is contained in:
Victor Stinner 2016-04-22 16:26:23 +02:00
parent 5439fc4901
commit f5c4b99034
5 changed files with 58 additions and 32 deletions
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11
Doc/using/cmdline.rst
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@ -628,12 +628,11 @@ conflict.
Set the family of memory allocators used by Python:
* ``malloc``: use the :c:func:`malloc` function of the C library
for all Python memory allocators (ex: :c:func:`PyMem_RawMalloc`,
:c:func:`PyMem_Malloc` and :c:func:`PyObject_Malloc`).
* ``pymalloc``: :c:func:`PyObject_Malloc`, :c:func:`PyObject_Calloc` and
:c:func:`PyObject_Realloc` use the :ref:`pymalloc allocator <pymalloc>`.
Other Python memory allocators (ex: :c:func:`PyMem_RawMalloc` and
:c:func:`PyMem_Malloc`) use :c:func:`malloc`.
for all domains (:c:data:`PYMEM_DOMAIN_RAW`, :c:data:`PYMEM_DOMAIN_MEM`,
:c:data:`PYMEM_DOMAIN_OBJ`).
* ``pymalloc``: use the :ref:`pymalloc allocator <pymalloc>` for
:c:data:`PYMEM_DOMAIN_MEM` and :c:data:`PYMEM_DOMAIN_OBJ` domains and use
the :c:func:`malloc` function for the :c:data:`PYMEM_DOMAIN_RAW` domain.
Install debug hooks: