diff options
| author | Benjamin Kosnik <bkoz@redhat.com> | 2007-12-10 00:38:36 +0000 |
|---|---|---|
| committer | Benjamin Kosnik <bkoz@gcc.gnu.org> | 2007-12-10 00:38:36 +0000 |
| commit | 79e790677d5a0088d60da607ef0c93c1c06becb5 (patch) | |
| tree | fd8a2c1f9d4504553b1ef84e02282972137daf4a /libstdc++-v3/docs/html/faq | |
| parent | 6e2215152b7b92c812177a72de69df442137bf41 (diff) | |
| download | gcc-79e790677d5a0088d60da607ef0c93c1c06becb5.zip gcc-79e790677d5a0088d60da607ef0c93c1c06becb5.tar.gz gcc-79e790677d5a0088d60da607ef0c93c1c06becb5.tar.bz2 | |
howto.html: Update.
2007-12-09 Benjamin Kosnik <bkoz@redhat.com>
* docs/html/ext/howto.html: Update.
* docs/html/ext/sgiexts.html: Same.
* docs/html/ext/concurrence.html: New. Document extensions.
* docs/html/17_intro/api.html: Move some bits...
* docs/html/17_intro/backwards_compatibility.html: here. New. Add
compatibility suggestions, move existing ones.
* docs/html/17_intro/howto.html: Update info.
* docs/html/18_support/howto.html: Tweak.
* docs/html/faq/index.html: Update thread info.
* docs/html/documentation.html: Add links.
* docs/html/20_util/allocator.html: Update info.
* include/precompiled/stdc++.h: Add C++0x includes if appropriate.
* testsuite/17_intro/headers/c++200x/all.cc: Same.
From-SVN: r130732
Diffstat (limited to 'libstdc++-v3/docs/html/faq')
| -rw-r--r-- | libstdc++-v3/docs/html/faq/index.html | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/libstdc++-v3/docs/html/faq/index.html b/libstdc++-v3/docs/html/faq/index.html index e353a1f..ff6cd65 100644 --- a/libstdc++-v3/docs/html/faq/index.html +++ b/libstdc++-v3/docs/html/faq/index.html @@ -1052,14 +1052,26 @@ http://clisp.cons.org/~haible/gccinclude-glibc-2.2-compat.diff <hr /> <h2><a name="5_6">5.6 Is libstdc++ thread-safe?</a></h2> - <p>libstdc++ strives to be thread-safe when all of the following + <p>The library strives to be thread-safe when all of the following conditions are met: </p> <ul> <li>The system's libc is itself thread-safe,</li> - <li><code>gcc -v</code> reports a thread model other than 'single',</li> - <li>[pre-3.3 only] a non-generic implementation of atomicity.h - exists for the architecture in question.</li> + <li>The compiler in use reports a thread model other than 'single'. This can be tested via output from <code>gcc -v</code>. Multi-thread capable versions of gcc output something like this: +<pre> +%gcc -v +Using built-in specs. +... +Thread model: posix +gcc version 4.1.2 20070925 (Red Hat 4.1.2-33) +</pre> + +<p>Look for "Thread model" lines that aren't equal to "single."</p> + </li> + <li>Requisite command-line flags are used for atomic operations and threading. Examples of this include <code>-pthread</code> and <code>-march=native</code>, although specifics vary depending on the host environment. See <a href="http://gcc.gnu.org/onlinedocs/gcc/Option-Summary.html">Machine Dependent Options</a>.</li> + <li>An implementation of atomicity.h functions + exists for the architecture in question. See the internals documentation for more <a href="../ext/concurrence.html">details</a>.</li> + </ul> <p>The user-code must guard against concurrent method calls which may access any particular library object's state. Typically, the |