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| <!-- %MENU% Jumping out of nested function calls --> |
| <h2 class="chapter">23 Non-Local Exits</h2> |
| |
| <p><a name="index-non_002dlocal-exits-2795"></a><a name="index-long-jumps-2796"></a> |
| Sometimes when your program detects an unusual situation inside a deeply |
| nested set of function calls, you would like to be able to immediately |
| return to an outer level of control. This section describes how you can |
| do such <dfn>non-local exits</dfn> using the <code>setjmp</code> and <code>longjmp</code> |
| functions. |
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| <ul class="menu"> |
| <li><a accesskey="1" href="Non_002dLocal-Intro.html#Non_002dLocal-Intro">Intro</a>: When and how to use these facilities. |
| <li><a accesskey="2" href="Non_002dLocal-Details.html#Non_002dLocal-Details">Details</a>: Functions for non-local exits. |
| <li><a accesskey="3" href="Non_002dLocal-Exits-and-Signals.html#Non_002dLocal-Exits-and-Signals">Non-Local Exits and Signals</a>: Portability issues. |
| <li><a accesskey="4" href="System-V-contexts.html#System-V-contexts">System V contexts</a>: Complete context control a la System V. |
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