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author | Remko Tronçon <git@el-tramo.be> | 2009-06-01 08:48:42 (GMT) |
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committer | Remko Tronçon <git@el-tramo.be> | 2009-06-01 09:24:28 (GMT) |
commit | 2812bddd81f8a1b804c7460f4e14cd0aa393d129 (patch) | |
tree | d46294f35150c4f0f43deaf2d31fceaf945ae715 /3rdParty/Boost/libs/thread/src/pthread/once.cpp | |
download | swift-2812bddd81f8a1b804c7460f4e14cd0aa393d129.zip swift-2812bddd81f8a1b804c7460f4e14cd0aa393d129.tar.bz2 |
Import.
Diffstat (limited to '3rdParty/Boost/libs/thread/src/pthread/once.cpp')
-rw-r--r-- | 3rdParty/Boost/libs/thread/src/pthread/once.cpp | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/3rdParty/Boost/libs/thread/src/pthread/once.cpp b/3rdParty/Boost/libs/thread/src/pthread/once.cpp new file mode 100644 index 0000000..6e3722a --- /dev/null +++ b/3rdParty/Boost/libs/thread/src/pthread/once.cpp @@ -0,0 +1,51 @@ +// Copyright (C) 2007 Anthony Williams +// +// Distributed under the Boost Software License, Version 1.0. (See accompanying +// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) + +#define __STDC_CONSTANT_MACROS +#include <boost/thread/once.hpp> +#include <boost/assert.hpp> +#include <pthread.h> +#include <stdlib.h> + +namespace boost +{ + namespace detail + { + BOOST_THREAD_DECL boost::uintmax_t once_global_epoch=UINTMAX_C(~0); + BOOST_THREAD_DECL pthread_mutex_t once_epoch_mutex=PTHREAD_MUTEX_INITIALIZER; + BOOST_THREAD_DECL pthread_cond_t once_epoch_cv = PTHREAD_COND_INITIALIZER; + + namespace + { + pthread_key_t epoch_tss_key; + pthread_once_t epoch_tss_key_flag=PTHREAD_ONCE_INIT; + + extern "C" void delete_epoch_tss_data(void* data) + { + free(data); + } + + extern "C" void create_epoch_tss_key() + { + BOOST_VERIFY(!pthread_key_create(&epoch_tss_key,delete_epoch_tss_data)); + } + + } + + boost::uintmax_t& get_once_per_thread_epoch() + { + BOOST_VERIFY(!pthread_once(&epoch_tss_key_flag,create_epoch_tss_key)); + void* data=pthread_getspecific(epoch_tss_key); + if(!data) + { + data=malloc(sizeof(boost::uintmax_t)); + BOOST_VERIFY(!pthread_setspecific(epoch_tss_key,data)); + *static_cast<boost::uintmax_t*>(data)=UINTMAX_C(~0); + } + return *static_cast<boost::uintmax_t*>(data); + } + } + +} |