pthread_cleanup_push(3thr)pthread_cleanup_push(3thr)Namepthread_cleanup_push - Establishes a cleanup handler that is executed
when the thread exits or is canceled.
Syntax
#include <pthread.h>
int pthread_cleanup_push (routine, arg)
void routine;
pthread_addr_t arg;
Arguments
routine Routine executed as the cleanup handler.
arg Argument executed with the cleanup routine.
Description
This routine pushes the specified routine onto the calling thread's
cleanup stack. The cleanup routine is popped from the stack and exe‐
cuted with the arg argument when any of the following actions occur:
· The thread calls pthread_exit.
· The thread is canceled.
· The thread calls pthread_cleanup_pop and specifies a nonzero
value for the execute argument.
This routine and pthread_cleanup_pop are implemented as macros
and must be displayed as statements and in pairs within the same
lexical scope. You can think of the pthread_cleanup_push macro
as expanding to a string whose first character is a left brace
({) and pthread_cleanup_pop as expanding to a string containing
the corresponding right brace (}).
Return Values
This routine must be used as a statement.
If an error is detected, it may be indicated by sending the
thread a synchronously generated signal.
pthread_cleanup_push(3thr)
