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authorTobias Klauser <tklauser@distanz.ch>2008-01-27 11:37:44 +0100
committerTobias Klauser <tklauser@xenon.tklauser.home>2008-01-27 11:37:44 +0100
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+<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 &lt;setjmp.h&gt;
+
+ 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>
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+ November 25, 1994 1
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+
+ </pre>
+<P>
+<hr>
+<p>
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