PTHREAD_CLEANUP(3) BSD Library Functions Manual PTHREAD_CLEANUP(3)NAME
pthread_cleanup_push, pthread_cleanup_pop — add and remove cleanup func‐
tions for thread exit
LIBRARY
POSIX Threads Library (libpthread, -lpthread)
SYNOPSIS
#include <pthread.h>
void
pthread_cleanup_push(void (*cleanup_routine)(void *), void *arg);
void
pthread_cleanup_pop(int execute);
DESCRIPTION
The pthread_cleanup_push() function adds cleanup_routine to the top of
the stack of cleanup handlers that get called when the current thread
exits.
The pthread_cleanup_pop() function pops the top cleanup routine off of
the current threads cleanup routine stack, and, if execute is non-zero,
it will execute the function.
When cleanup_routine is called, it is passed arg as its only argument.
These functions may be implemented as macros which contain scope delim‐
iters; therefore, there must be a matching pthread_cleanup_pop() for
every pthread_cleanup_push() at the same level of lexical scoping.
The effect of calling longjmp() or siglongjmp() is undefined after a call
to pthread_cleanup_push() but before the matching call to
pthread_cleanup_pop() after the jump buffer was filled.
RETURN VALUES
Neither pthread_cleanup_push() nor pthread_cleanup_pop() returns a value.
ERRORS
None.
SEE ALSOpthread_exit(3)STANDARDS
Both functions conform to IEEE Std 1003.1-2001 (“POSIX.1”).
BSD July 9, 2010 BSD
