76 lines
3.9 KiB
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76 lines
3.9 KiB
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<title>File Caching - Debugging with GDB</title>
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<a name="File-Caching"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="Separate-Debug-Files.html#Separate-Debug-Files">Separate Debug Files</a>,
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Previous: <a rel="previous" accesskey="p" href="Files.html#Files">Files</a>,
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Up: <a rel="up" accesskey="u" href="GDB-Files.html#GDB-Files">GDB Files</a>
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<hr>
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</div>
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<h3 class="section">18.2 File Caching</h3>
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<p><a name="index-caching-of-opened-files-1265"></a><a name="index-caching-of-bfd-objects-1266"></a>
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To speed up file loading, and reduce memory usage, <span class="sc">gdb</span> will
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reuse the <code>bfd</code> objects used to track open files. See <a href="../bfd/index.html#Top">BFD</a>. The following commands
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allow visibility and control of the caching behavior.
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<a name="index-maint-info-bfds-1267"></a>
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<dl><dt><code>maint info bfds</code><dd>This prints information about each <code>bfd</code> object that is known to
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<span class="sc">gdb</span>.
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<p><a name="index-maint-set-bfd_002dsharing-1268"></a><a name="index-maint-show-bfd_002dsharing-1269"></a><a name="index-bfd-caching-1270"></a><br><dt><code>maint set bfd-sharing</code><br><dt><code>maint show bfd-sharing</code><dd>Control whether <code>bfd</code> objects can be shared. When sharing is
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enabled <span class="sc">gdb</span> reuses already open <code>bfd</code> objects rather
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than reopening the same file. Turning sharing off does not cause
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already shared <code>bfd</code> objects to be unshared, but all future files
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that are opened will create a new <code>bfd</code> object. Similarly,
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re-enabling sharing does not cause multiple existing <code>bfd</code>
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objects to be collapsed into a single shared <code>bfd</code> object.
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<p><a name="index-set-debug-bfd_002dcache-_0040var_007blevel_007d-1271"></a><a name="index-bfd-caching-1272"></a><br><dt><code>set debug bfd-cache </code><var>level</var><dd>Turns on debugging of the bfd cache, setting the level to <var>level</var>.
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<p><a name="index-show-debug-bfd_002dcache-1273"></a><a name="index-bfd-caching-1274"></a><br><dt><code>show debug bfd-cache</code><dd>Show the current debugging level of the bfd cache.
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</dl>
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</body></html>
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