<TITLE>setjmp</TITLE> <body bgcolor="#ffffcc"> <hr> <pre> <h3>SETJMP(3) Library functions SETJMP(3) </h3> <h3>NAME </h3> setjmp - save stack context for non-local goto <h3>SYNOPSIS </h3> #include <setjmp.h> int setjmp(jmp_buf env ); <h3>DESCRIPTION </h3> 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. <h3>RETURN VALUE </h3> It returns the value 0 if returning directly and non-zero when returning from longjmp() using the saved context. <h3>CONFORMING TO </h3> POSIX <h3>NOTES </h3> 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. </pre> <hr> <h3>SEE ALSO </h3><p> <a href=longjmp.htmlongjmp</a>, <a href=sigsetjmp.htm>sigsetjmp</a>, <a href=siglongjmp.htm>siglongjmp</a>, <pre> November 25, 1994 1 </pre> <P> <hr> <p> <center> <table border=2 width=80%> <tr align=center> <td width=25%> <a href=../index.htm>Top</a> </td><td width=25%> <a href=../master_index.html>Master Index</a> </td><td width=25%> <a href=../SYNTAX/keywords.html>Keywords</a> </td><td width=25%> <a href=../FUNCTIONS/index.htm>Functions</a> </td> </tr> </table> </center> <p> <hr> This manual page was brought to you by <i>mjl_man V-2.0</i>
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