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doc: add description of the new memory macro

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Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
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Igor Ryzhov 2020-12-01 11:39:40 +03:00
parent 6df43392d8
commit fdac05fd9a
1 changed files with 7 additions and 0 deletions
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7
doc/developer/memtypes.rst
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@ -131,3 +131,10 @@ Usage
- if ptr is NULL, no operation is performed (as is guaranteed by system
implementations.) Do not surround XFREE with ``if (ptr != NULL)``
checks.
.. c:function:: void XCOUNTFREE(struct memtype *mtype, void *ptr)
This macro is used to count the ``ptr`` as freed without actually freeing
it. This may be needed in some very specific cases, for example, when the
``ptr`` was allocated using any of the above wrappers and will be freed
by some external library using simple ``free()``.