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| author | Ian Lance Taylor <ian@gcc.gnu.org> | 2005-10-11 06:19:13 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2005-10-11 06:19:13 +0000 |
| commit | 18c75543a89fc2b6a62b3e2967cb89b83fb96ada (patch) | |
| tree | a25c3b10a5e437f7a6875e11b8b8bd9c85f26839 /libstdc++-v3/src | |
| parent | e0c48a517ebd8213c2300b7d63907b2e85c0ef9c (diff) | |
| download | gcc-18c75543a89fc2b6a62b3e2967cb89b83fb96ada.zip gcc-18c75543a89fc2b6a62b3e2967cb89b83fb96ada.tar.gz gcc-18c75543a89fc2b6a62b3e2967cb89b83fb96ada.tar.bz2 | |
re PR libstdc++/13583 (__use_cache not threadsafe)
PR libstdc++/13583
* include/bits/locale_classes.h (locale::_Impl::_M_install_cache):
Move out of line.
* src/locale.cc: Define here, add mutex.
* configure.ac (libtool_VERSION): To 6:7:0.
* configure: Regenerate.
* testsuite/testsuite_abi.cc (check_version): Add GLIBCXX_3.4.7.
* config/linker-map.gnu: Export locale::_Impl::_M_install_cache.
From-SVN: r105221
Diffstat (limited to 'libstdc++-v3/src')
| -rw-r--r-- | libstdc++-v3/src/locale.cc | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/libstdc++-v3/src/locale.cc b/libstdc++-v3/src/locale.cc index 0117d15..5498eae 100644 --- a/libstdc++-v3/src/locale.cc +++ b/libstdc++-v3/src/locale.cc @@ -33,6 +33,13 @@ #include <cwctype> // For towupper, etc. #include <locale> #include <bits/atomicity.h> +#include <bits/concurrence.h> + +namespace __gnu_internal +{ + // Mutex object for cache access + static __glibcxx_mutex_define_initialized(locale_cache_mutex); +} namespace std { @@ -366,6 +373,23 @@ namespace std } } + void + locale::_Impl:: + _M_install_cache(const facet* __cache, size_t __index) + { + __gnu_cxx::lock sentry(__gnu_internal::locale_cache_mutex); + if (_M_caches[__index] != 0) + { + // Some other thread got in first. + delete __cache; + } + else + { + __cache->_M_add_reference(); + _M_caches[__index] = __cache; + } + } + // locale::id // Definitions for static const data members of locale::id _Atomic_word locale::id::_S_refcount; // init'd to 0 by linker |