PTHREAD_CLEANUP_PUSH(3) BSD Library Functions Manual PTHREAD_CLEANUP_PUSH(3)NAME
pthread_cleanup_push -- add a cleanup function for thread exit
SYNOPSIS
#include <pthread.h>
void
pthread_cleanup_push(void (*routine)(void *), void *arg);
DESCRIPTION
The pthread_cleanup_push() function adds routine to the top of the stack of cleanup handlers that get called when the current thread exits.
When routine is called, it is passed arg as its only argument. pthread_cleanup_push() must be paired with a corresponding
pthread_cleanup_pop(3) in the same lexical scope.
RETURN VALUES
pthread_cleanup_push() does not return any value.
ERRORS
None
SEE ALSO pthread_cleanup_pop(3), pthread_exit(3)STANDARDS
pthread_cleanup_push() conforms to ISO/IEC 9945-1:1996 (``POSIX.1'').
BSD July 30, 1998 BSD
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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)