setjmp(3p) - phpMan

SETJMP(P)                                                            SETJMP(P)



NAME
       setjmp - set jump point for a non-local goto

SYNOPSIS
       #include <setjmp.h>

       int setjmp(jmp_buf env);


DESCRIPTION
       A call to setjmp() shall save the calling environment in its env argument for later
       use by longjmp().

       It is unspecified whether setjmp() is a macro or a function.  If a macro definition
       is suppressed in order to access an actual function, or a program defines an exter-
       nal identifier with the name setjmp, the behavior is undefined.

       An application shall ensure that an invocation of setjmp() appears in  one  of  the
       following contexts only:

        * The entire controlling expression of a selection or iteration statement


        * One operand of a relational or equality operator with the other operand an inte-
          gral constant expression, with the resulting expression being  the  entire  con-
          trolling expression of a selection or iteration statement


        * The  operand  of  a  unary  â€â€™!â€â€™ operator with the resulting expression being the
          entire controlling expression of a selection or iteration


        * The entire expression of an expression statement (possibly cast to void)


       If the invocation appears in any other context, the behavior is undefined.

RETURN VALUE
       If the return is from a direct invocation, setjmp() shall return 0. If  the  return
       is from a call to longjmp(), setjmp() shall return a non-zero value.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       In  general,  sigsetjmp()  is  more  useful  in  dealing with errors and interrupts
       encountered in a low-level subroutine of a program.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       longjmp() , sigsetjmp() , the  Base  Definitions  volume  of  IEEE Std 1003.1-2001,
       <setjmp.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form from IEEE Std
       1003.1, 2003 Edition, Standard for Information  Technology  --  Portable  Operating
       System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C)
       2001-2003 by the Institute of Electrical and Electronics  Engineers,  Inc  and  The
       Open  Group.  In the event of any discrepancy between this version and the original
       IEEE and The Open Group Standard, the original IEEE and The Open Group Standard  is
       the   referee   document.   The   original  Standard  can  be  obtained  online  at
       http://www.opengroup.org/unix/online.html .



POSIX                                2003                            SETJMP(P)

Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache/1.3.41 (Unix) PHP/5.2.5 mod_perl/1.30 mod_gzip/1.3.26.1a
Under GNU General Public License
2009-01-10 10:15 @38.103.63.58 CrawledBy CCBot/1.0 (+http://www.commoncrawl.org/bot.html)