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NetBSD 6.1.5 - man page for pthread_cleanup_pop (netbsd section 3)

PTHREAD_CLEANUP(3)		   BSD Library Functions Manual 	       PTHREAD_CLEANUP(3)

NAME
     pthread_cleanup_push, pthread_cleanup_pop -- add and remove cleanup functions 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 delimiters; 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 ALSO
     pthread_exit(3)

STANDARDS
     Both functions conform to IEEE Std 1003.1-2001 (``POSIX.1'').

BSD					   July 9, 2010 				      BSD


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