93 lines
4.0 KiB
HTML
93 lines
4.0 KiB
HTML
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<head>
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<title>GNU Compiler Collection (GCC) Internals: Plugins gate</title>
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<meta name="description" content="GNU Compiler Collection (GCC) Internals: Plugins gate">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Option-Index.html#Option-Index" rel="index" title="Option Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Plugins.html#Plugins" rel="up" title="Plugins">
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<link href="Plugins-tracking.html#Plugins-tracking" rel="next" title="Plugins tracking">
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<link href="Plugins-recording.html#Plugins-recording" rel="prev" title="Plugins recording">
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<a name="Plugins-gate"></a>
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<div class="header">
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<p>
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Next: <a href="Plugins-tracking.html#Plugins-tracking" accesskey="n" rel="next">Plugins tracking</a>, Previous: <a href="Plugins-recording.html#Plugins-recording" accesskey="p" rel="prev">Plugins recording</a>, Up: <a href="Plugins.html#Plugins" accesskey="u" rel="up">Plugins</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="Controlling-which-passes-are-being-run"></a>
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<h3 class="section">23.8 Controlling which passes are being run</h3>
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<p>After the original gate function for a pass is called, its result
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- the gate status - is stored as an integer.
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Then the event <code>PLUGIN_OVERRIDE_GATE</code> is invoked, with a pointer
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to the gate status in the <code>gcc_data</code> parameter to the callback function.
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A nonzero value of the gate status means that the pass is to be executed.
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You can both read and write the gate status via the passed pointer.
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</p>
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</body>
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