8f3
malloc, realloc, free[manage memory]
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__malloc_lock, __malloc_unlock
SYNOPSIS
#include <malloc.h>
void __malloc_lock (void * reent );
void __malloc_unlock (void * reent );
DESCRIPTION
The malloc
family of routines call these functions when they need to lock the memory
pool. The version of these routines supplied in the library does not do
anything. If multiple threads of execution can call malloc, or
if malloc can be called reentrantly, then you need to define your
own versions of these functions in order to safely lock the memory pool
during a call. If you do not, the memory pool may become corrupted.
A call to malloc
may call __malloc_lock recursively; that is, the sequence of calls
may go __malloc_lock, __malloc_lock, __malloc_unlock,
__malloc_unlock. Any implementation of these routines must be
careful to avoid causing a thread to wait for a lock that it already holds.
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