SETJMP

Section: Library functions (3)
Updated: November 25, 1994
Index Return to Main Contents
 

NAME

setjmp - save stack context for non-local goto  

SYNOPSIS

#include <setjmp.h>

int setjmp(jmp_buf env );  

DESCRIPTION

setjmp and longjmp(3) are useful for dealing with errors and interrupts encountered in a low-level subroutine of a program. setjmp() saves the stack context/environment in env for later use by longjmp(). The stack context will be invalidated if the function which called setjmp() returns.  

RETURN VALUE

It returns the value 0 if returning directly and non-zero when returning from longjmp() using the saved context.  

CONFORMING TO

POSIX  

NOTES

POSIX does not specify if the signal context will be saved or not. If you want to save signal masks, use sigsetjmp(3). setjmp() makes programs hard to understand and maintain. If possible an alternative should be used.  

SEE ALSO

longjmp(3), sigsetjmp(2), siglongjmp(2)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
CONFORMING TO
NOTES
SEE ALSO

This document was created by man2html, using the manual pages.
Time: 12:23:29 GMT, March 22, 2025