pthread_cleanup_push(3) - NetBSD Manual Pages

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PTHREAD_CLEANUP(3)      NetBSD 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 ALSO

     pthread_exit(3)


STANDARDS

     pthread_cleanup_push() and pthread_cleanup_pop() conform to ISO/IEC
     9945-1:1996 (``POSIX.1'').

NetBSD 5.1.2                   January 30, 2003                   NetBSD 5.1.2