149 lines
5.3 KiB
HTML
149 lines
5.3 KiB
HTML
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<!-- Copyright (c) 2001 The Open Group, All Rights Reserved -->
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<title>siglongjmp</title>
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<script type="text/javascript" language="JavaScript" src="../jscript/codes.js">
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<basefont size="3"> <a name="siglongjmp"></a> <a name="tag_03_689"></a><!-- siglongjmp -->
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<!--header start-->
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<center><font size="2">The Open Group Base Specifications Issue 6<br>
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IEEE Std 1003.1-2001<br>
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Copyright © 2001 The IEEE and The Open Group, All Rights reserved.</font></center>
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<!--header end-->
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<hr size="2" noshade>
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<h4><a name="tag_03_689_01"></a>NAME</h4>
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<blockquote>siglongjmp - non-local goto with signal handling</blockquote>
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<h4><a name="tag_03_689_02"></a>SYNOPSIS</h4>
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<blockquote class="synopsis">
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<div class="box"><code><tt><sup>[<a href="javascript:open_code('CX')">CX</a>]</sup> <img src="../images/opt-start.gif" alt=
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"[Option Start]" border="0"> #include <<a href="../basedefs/setjmp.h.html">setjmp.h</a>><br>
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<br>
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void siglongjmp(sigjmp_buf</tt> <i>env</i><tt>, int</tt> <i>val</i><tt>); <img src="../images/opt-end.gif" alt="[Option End]"
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border="0"></tt></code></div>
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<tt><br>
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</tt></blockquote>
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<h4><a name="tag_03_689_03"></a>DESCRIPTION</h4>
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<blockquote>
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<p>The <i>siglongjmp</i>() function shall be equivalent to the <a href="../functions/longjmp.html"><i>longjmp</i>()</a> function,
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except as follows:</p>
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<ul>
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<li>
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<p>References to <a href="../functions/setjmp.html"><i>setjmp</i>()</a> shall be equivalent to <a href=
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"../functions/sigsetjmp.html"><i>sigsetjmp</i>()</a>.</p>
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</li>
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<li>
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<p>The <i>siglongjmp</i>() function shall restore the saved signal mask if and only if the <i>env</i> argument was initialized by a
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call to <a href="../functions/sigsetjmp.html"><i>sigsetjmp</i>()</a> with a non-zero <i>savemask</i> argument.</p>
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</li>
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</ul>
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</blockquote>
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<h4><a name="tag_03_689_04"></a>RETURN VALUE</h4>
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<blockquote>
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<p>After <i>siglongjmp</i>() is completed, program execution shall continue as if the corresponding invocation of <a href=
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"../functions/sigsetjmp.html"><i>sigsetjmp</i>()</a> had just returned the value specified by <i>val</i>. The <i>siglongjmp</i>()
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function shall not cause <a href="../functions/sigsetjmp.html"><i>sigsetjmp</i>()</a> to return 0; if <i>val</i> is 0, <a href=
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"../functions/sigsetjmp.html"><i>sigsetjmp</i>()</a> shall return the value 1.</p>
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</blockquote>
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<h4><a name="tag_03_689_05"></a>ERRORS</h4>
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<blockquote>
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<p>No errors are defined.</p>
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</blockquote>
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<hr>
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<div class="box"><em>The following sections are informative.</em></div>
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<h4><a name="tag_03_689_06"></a>EXAMPLES</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_03_689_07"></a>APPLICATION USAGE</h4>
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<blockquote>
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<p>The distinction between <a href="../functions/setjmp.html"><i>setjmp</i>()</a> or <a href=
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"../functions/longjmp.html"><i>longjmp</i>()</a> and <a href="../functions/sigsetjmp.html"><i>sigsetjmp</i>()</a> or
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<i>siglongjmp</i>() is only significant for programs which use <a href="../functions/sigaction.html"><i>sigaction</i>()</a>, <a
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href="../functions/sigprocmask.html"><i>sigprocmask</i>()</a>, or <a href=
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"../functions/sigsuspend.html"><i>sigsuspend</i>()</a>.</p>
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</blockquote>
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<h4><a name="tag_03_689_08"></a>RATIONALE</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_03_689_09"></a>FUTURE DIRECTIONS</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_03_689_10"></a>SEE ALSO</h4>
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<blockquote>
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<p><a href="longjmp.html"><i>longjmp</i>()</a> , <a href="setjmp.html"><i>setjmp</i>()</a> , <a href=
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"sigprocmask.html"><i>sigprocmask</i>()</a> , <a href="sigsetjmp.html"><i>sigsetjmp</i>()</a> , <a href=
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"sigsuspend.html"><i>sigsuspend</i>()</a> , the Base Definitions volume of IEEE Std 1003.1-2001, <a href=
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"../basedefs/setjmp.h.html"><i><setjmp.h></i></a></p>
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</blockquote>
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<h4><a name="tag_03_689_11"></a>CHANGE HISTORY</h4>
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<blockquote>
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<p>First released in Issue 3. Included for alignment with the ISO POSIX-1 standard.</p>
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</blockquote>
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<h4><a name="tag_03_689_12"></a>Issue 5</h4>
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<blockquote>
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<p>The DESCRIPTION is updated for alignment with the POSIX Threads Extension.</p>
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</blockquote>
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<h4><a name="tag_03_689_13"></a>Issue 6</h4>
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<blockquote>
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<p>The DESCRIPTION is rewritten in terms of <a href="../functions/longjmp.html"><i>longjmp</i>()</a>.</p>
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<p>The SYNOPSIS is marked CX since the presence of this function in the <a href=
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"../basedefs/setjmp.h.html"><i><setjmp.h></i></a> header is an extension over the ISO C standard.</p>
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</blockquote>
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<div class="box"><em>End of informative text.</em></div>
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