sunos man page for pthread_cleanup_push

pthread_cleanup_push(3C)												  pthread_cleanup_push(3C)

NAME
       pthread_cleanup_push - push a thread cancellation cleanup handler

SYNOPSIS
       cc -mt [ flag... ] file... -lpthread [ library... ]
       #include <pthread.h>

       void pthread_cleanup_push(void (*handler, void *),void *arg);

       The pthread_cleanup_push() function pushes the specified cancellation cleanup handler routine, handler, onto the cancellation cleanup stack
       of the calling thread.

       When a thread exits or is canceled and its cancellation cleanup	stack is not empty, the cleanup handlers are  invoked  with  the  argument
       arg in  last in, first out (LIFO) order from the cancellation cleanup stack.

       The pthread_cleanup_push() and pthread_cleanup_pop(3C) functions can be implemented as macros. The application must ensure that they appear
       as statements, and in pairs within the same lexical scope (that is, the pthread_cleanup_push() macro can be thought to expand  to  a  token
       list whose first token is '{' with pthread_cleanup_pop() expanding to a token list whose last token is the corresponding '}').

       The  effect of the use of return, break, continue, and goto to prematurely leave a code block described by a pair of pthread_cleanup_push()
       and pthread_cleanup_pop() function calls is undefined.

       Using longjmp() or siglongjmp() to jump into or out of a push/pop pair can cause either the matching push or the matching pop statement not
       getting executed.

       The pthread_cleanup_push() function returns no value.

       No errors are defined.

       The  pthread_cleanup_push() function will not return an error code of EINTR.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

       longjmp(3C),  pthread_cancel(3C),  pthread_cleanup_pop(3C),  pthread_exit(3C),  pthread_join(3C),  pthread_setcancelstate(3C), pthread_set-
       canceltype(3C), pthread_testcancel(3C), attributes(5), cancellation(5), condition(5), standards(5)

       See cancellation(5) for a discussion of cancellation concepts.

								    4 Oct 2005						  pthread_cleanup_push(3C)