Manpage of __MALLOC_LOCK
__MALLOC_LOCK
Section: NEWLIB (3)
Updated: 2005 Feb 23
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NAME
1.24 `__malloc_lock', `__malloc_unlock'-lock malloc pool
SYNOPSIS
#include <malloc.h>
void __malloc_lock (struct _reent *REENT);
void __malloc_unlock (struct _reent *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 use the lock API defined in sys/lock.h. 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.
SEE ALSO
__malloc_lock
is part of the
libc
library.
The full documentation for
libc
is maintained as a Texinfo manual. If
info
and
libc
are properly installed at your site, the command
-
info libc
will give you access to the complete manual.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- SEE ALSO
-
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Time: 21:25:11 GMT, May 16, 2005
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