mirror of
https://git.suyu.dev/suyu/ext-boost.git
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externals: Update boost to 1.72 and add Boost Context
This commit is contained in:
Fernando Sahmkow
parent
5e8300b76a
commit
77abe07b3b
618 changed files with 96299 additions and 14263 deletions
436
boost/thread/pthread/recursive_mutex.hpp
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436
boost/thread/pthread/recursive_mutex.hpp
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#ifndef BOOST_THREAD_PTHREAD_RECURSIVE_MUTEX_HPP
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#define BOOST_THREAD_PTHREAD_RECURSIVE_MUTEX_HPP
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// (C) Copyright 2007-8 Anthony Williams
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// (C) Copyright 2011-2012 Vicente J. Botet Escriba
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <pthread.h>
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#include <boost/throw_exception.hpp>
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#include <boost/thread/exceptions.hpp>
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#if defined BOOST_THREAD_PROVIDES_NESTED_LOCKS
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#include <boost/thread/lock_types.hpp>
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#endif
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#include <boost/thread/thread_time.hpp>
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#include <boost/assert.hpp>
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#ifndef _WIN32
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#include <unistd.h>
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#endif
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#include <boost/date_time/posix_time/conversion.hpp>
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#include <errno.h>
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#include <boost/thread/detail/platform_time.hpp>
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#include <boost/thread/pthread/pthread_mutex_scoped_lock.hpp>
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#include <boost/thread/pthread/pthread_helpers.hpp>
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#ifdef BOOST_THREAD_USES_CHRONO
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#include <boost/chrono/system_clocks.hpp>
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#include <boost/chrono/ceil.hpp>
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#endif
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#include <boost/thread/detail/delete.hpp>
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#if defined BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE \
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|| defined __ANDROID__
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#define BOOST_THREAD_HAS_PTHREAD_MUTEXATTR_SETTYPE
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#endif
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#if defined BOOST_THREAD_HAS_PTHREAD_MUTEXATTR_SETTYPE && defined BOOST_THREAD_USES_PTHREAD_TIMEDLOCK
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#define BOOST_USE_PTHREAD_RECURSIVE_TIMEDLOCK
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#endif
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#include <boost/config/abi_prefix.hpp>
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namespace boost
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{
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class recursive_mutex
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{
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private:
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pthread_mutex_t m;
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#ifndef BOOST_THREAD_HAS_PTHREAD_MUTEXATTR_SETTYPE
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pthread_cond_t cond;
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bool is_locked;
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pthread_t owner;
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unsigned count;
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#endif
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public:
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BOOST_THREAD_NO_COPYABLE(recursive_mutex)
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recursive_mutex()
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{
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#ifdef BOOST_THREAD_HAS_PTHREAD_MUTEXATTR_SETTYPE
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pthread_mutexattr_t attr;
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int const init_attr_res=pthread_mutexattr_init(&attr);
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if(init_attr_res)
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{
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boost::throw_exception(thread_resource_error(init_attr_res, "boost:: recursive_mutex constructor failed in pthread_mutexattr_init"));
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}
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int const set_attr_res=pthread_mutexattr_settype(&attr,PTHREAD_MUTEX_RECURSIVE);
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if(set_attr_res)
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{
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BOOST_VERIFY(!pthread_mutexattr_destroy(&attr));
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boost::throw_exception(thread_resource_error(set_attr_res, "boost:: recursive_mutex constructor failed in pthread_mutexattr_settype"));
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}
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int const res=posix::pthread_mutex_init(&m,&attr);
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if(res)
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{
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BOOST_VERIFY(!pthread_mutexattr_destroy(&attr));
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boost::throw_exception(thread_resource_error(res, "boost:: recursive_mutex constructor failed in pthread_mutex_init"));
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}
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BOOST_VERIFY(!pthread_mutexattr_destroy(&attr));
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#else
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int const res=posix::pthread_mutex_init(&m);
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if(res)
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{
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boost::throw_exception(thread_resource_error(res, "boost:: recursive_mutex constructor failed in pthread_mutex_init"));
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}
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int const res2=posix::pthread_cond_init(&cond);
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if(res2)
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{
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BOOST_VERIFY(!posix::pthread_mutex_destroy(&m));
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boost::throw_exception(thread_resource_error(res2, "boost:: recursive_mutex constructor failed in pthread_cond_init"));
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}
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is_locked=false;
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count=0;
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#endif
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}
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~recursive_mutex()
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{
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BOOST_VERIFY(!posix::pthread_mutex_destroy(&m));
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#ifndef BOOST_THREAD_HAS_PTHREAD_MUTEXATTR_SETTYPE
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BOOST_VERIFY(!posix::pthread_cond_destroy(&cond));
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#endif
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}
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#ifdef BOOST_THREAD_HAS_PTHREAD_MUTEXATTR_SETTYPE
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void lock()
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{
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BOOST_VERIFY(!posix::pthread_mutex_lock(&m));
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}
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void unlock()
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{
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BOOST_VERIFY(!posix::pthread_mutex_unlock(&m));
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}
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bool try_lock() BOOST_NOEXCEPT
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{
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int const res=posix::pthread_mutex_trylock(&m);
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BOOST_ASSERT(!res || res==EBUSY);
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return !res;
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}
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#define BOOST_THREAD_DEFINES_RECURSIVE_MUTEX_NATIVE_HANDLE
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typedef pthread_mutex_t* native_handle_type;
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native_handle_type native_handle()
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{
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return &m;
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}
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#else
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void lock()
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{
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boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
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if(is_locked && pthread_equal(owner,pthread_self()))
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{
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++count;
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return;
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}
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while(is_locked)
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{
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BOOST_VERIFY(!posix::pthread_cond_wait(&cond,&m));
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}
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is_locked=true;
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++count;
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owner=pthread_self();
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}
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void unlock()
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{
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boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
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if(!--count)
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{
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is_locked=false;
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}
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BOOST_VERIFY(!posix::pthread_cond_signal(&cond));
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}
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bool try_lock()
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{
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boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
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if(is_locked && !pthread_equal(owner,pthread_self()))
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{
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return false;
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}
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is_locked=true;
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++count;
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owner=pthread_self();
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return true;
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}
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#endif
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#if defined BOOST_THREAD_PROVIDES_NESTED_LOCKS
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typedef unique_lock<recursive_mutex> scoped_lock;
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typedef detail::try_lock_wrapper<recursive_mutex> scoped_try_lock;
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#endif
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};
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typedef recursive_mutex recursive_try_mutex;
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class recursive_timed_mutex
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{
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private:
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pthread_mutex_t m;
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#ifndef BOOST_USE_PTHREAD_RECURSIVE_TIMEDLOCK
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pthread_cond_t cond;
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bool is_locked;
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pthread_t owner;
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unsigned count;
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#endif
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public:
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BOOST_THREAD_NO_COPYABLE(recursive_timed_mutex)
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recursive_timed_mutex()
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{
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#ifdef BOOST_USE_PTHREAD_RECURSIVE_TIMEDLOCK
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pthread_mutexattr_t attr;
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int const init_attr_res=pthread_mutexattr_init(&attr);
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if(init_attr_res)
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{
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boost::throw_exception(thread_resource_error(init_attr_res, "boost:: recursive_timed_mutex constructor failed in pthread_mutexattr_init"));
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}
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int const set_attr_res=pthread_mutexattr_settype(&attr,PTHREAD_MUTEX_RECURSIVE);
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if(set_attr_res)
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{
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boost::throw_exception(thread_resource_error(set_attr_res, "boost:: recursive_timed_mutex constructor failed in pthread_mutexattr_settype"));
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}
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int const res=posix::pthread_mutex_init(&m,&attr);
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if(res)
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{
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BOOST_VERIFY(!pthread_mutexattr_destroy(&attr));
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boost::throw_exception(thread_resource_error(res, "boost:: recursive_timed_mutex constructor failed in pthread_mutex_init"));
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}
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BOOST_VERIFY(!pthread_mutexattr_destroy(&attr));
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#else
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int const res=posix::pthread_mutex_init(&m);
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if(res)
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{
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boost::throw_exception(thread_resource_error(res, "boost:: recursive_timed_mutex constructor failed in pthread_mutex_init"));
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}
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int const res2=posix::pthread_cond_init(&cond);
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if(res2)
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{
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BOOST_VERIFY(!posix::pthread_mutex_destroy(&m));
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boost::throw_exception(thread_resource_error(res2, "boost:: recursive_timed_mutex constructor failed in pthread_cond_init"));
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}
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is_locked=false;
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count=0;
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#endif
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}
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~recursive_timed_mutex()
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{
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BOOST_VERIFY(!posix::pthread_mutex_destroy(&m));
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#ifndef BOOST_USE_PTHREAD_RECURSIVE_TIMEDLOCK
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BOOST_VERIFY(!posix::pthread_cond_destroy(&cond));
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#endif
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}
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#if defined BOOST_THREAD_USES_DATETIME
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template<typename TimeDuration>
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bool timed_lock(TimeDuration const & relative_time)
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{
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if (relative_time.is_pos_infinity())
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{
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lock();
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return true;
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}
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if (relative_time.is_special())
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{
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return true;
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}
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detail::platform_duration d(relative_time);
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#if defined(BOOST_THREAD_HAS_MONO_CLOCK) && !defined(BOOST_THREAD_INTERNAL_CLOCK_IS_MONO)
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const detail::mono_platform_timepoint ts(detail::mono_platform_clock::now() + d);
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d = (std::min)(d, detail::platform_milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS));
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while ( ! do_try_lock_until(detail::internal_platform_clock::now() + d) )
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{
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d = ts - detail::mono_platform_clock::now();
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if ( d <= detail::platform_duration::zero() ) return false; // timeout occurred
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d = (std::min)(d, detail::platform_milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS));
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}
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return true;
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#else
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return do_try_lock_until(detail::internal_platform_clock::now() + d);
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#endif
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}
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#endif
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#ifdef BOOST_USE_PTHREAD_RECURSIVE_TIMEDLOCK
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void lock()
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{
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BOOST_VERIFY(!posix::pthread_mutex_lock(&m));
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}
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void unlock()
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{
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BOOST_VERIFY(!posix::pthread_mutex_unlock(&m));
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}
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bool try_lock()
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{
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int const res=posix::pthread_mutex_trylock(&m);
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BOOST_ASSERT(!res || res==EBUSY);
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return !res;
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}
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private:
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bool do_try_lock_until(detail::internal_platform_timepoint const &timeout)
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{
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int const res=pthread_mutex_timedlock(&m,&timeout.getTs());
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BOOST_ASSERT(!res || res==ETIMEDOUT);
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return !res;
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}
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public:
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#else
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void lock()
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{
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boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
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if(is_locked && pthread_equal(owner,pthread_self()))
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{
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++count;
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return;
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}
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while(is_locked)
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{
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BOOST_VERIFY(!posix::pthread_cond_wait(&cond,&m));
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}
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is_locked=true;
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++count;
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owner=pthread_self();
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}
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void unlock()
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{
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boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
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if(!--count)
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{
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is_locked=false;
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}
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BOOST_VERIFY(!posix::pthread_cond_signal(&cond));
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}
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bool try_lock() BOOST_NOEXCEPT
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{
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boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
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if(is_locked && !pthread_equal(owner,pthread_self()))
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{
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return false;
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}
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is_locked=true;
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++count;
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owner=pthread_self();
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return true;
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}
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private:
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bool do_try_lock_until(detail::internal_platform_timepoint const &timeout)
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{
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boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
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if(is_locked && pthread_equal(owner,pthread_self()))
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{
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++count;
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return true;
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}
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while(is_locked)
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{
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int const cond_res=posix::pthread_cond_timedwait(&cond,&m,&timeout.getTs());
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if(cond_res==ETIMEDOUT)
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{
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break;
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}
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BOOST_ASSERT(!cond_res);
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}
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if(is_locked)
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{
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return false;
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}
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is_locked=true;
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++count;
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owner=pthread_self();
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return true;
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}
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public:
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#endif
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#if defined BOOST_THREAD_USES_DATETIME
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bool timed_lock(system_time const & abs_time)
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{
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const detail::real_platform_timepoint ts(abs_time);
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#if defined BOOST_THREAD_INTERNAL_CLOCK_IS_MONO
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detail::platform_duration d(ts - detail::real_platform_clock::now());
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d = (std::min)(d, detail::platform_milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS));
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while ( ! do_try_lock_until(detail::internal_platform_clock::now() + d) )
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{
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d = ts - detail::real_platform_clock::now();
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if ( d <= detail::platform_duration::zero() ) return false; // timeout occurred
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d = (std::min)(d, detail::platform_milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS));
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}
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return true;
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#else
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return do_try_lock_until(ts);
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#endif
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}
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#endif
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#ifdef BOOST_THREAD_USES_CHRONO
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template <class Rep, class Period>
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bool try_lock_for(const chrono::duration<Rep, Period>& rel_time)
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{
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return try_lock_until(chrono::steady_clock::now() + rel_time);
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}
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template <class Clock, class Duration>
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bool try_lock_until(const chrono::time_point<Clock, Duration>& t)
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{
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typedef typename common_type<Duration, typename Clock::duration>::type common_duration;
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common_duration d(t - Clock::now());
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d = (std::min)(d, common_duration(chrono::milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS)));
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while ( ! try_lock_until(detail::internal_chrono_clock::now() + d))
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{
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d = t - Clock::now();
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if ( d <= common_duration::zero() ) return false; // timeout occurred
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d = (std::min)(d, common_duration(chrono::milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS)));
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}
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return true;
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}
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template <class Duration>
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bool try_lock_until(const chrono::time_point<detail::internal_chrono_clock, Duration>& t)
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{
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detail::internal_platform_timepoint ts(t);
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return do_try_lock_until(ts);
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}
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#endif
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#define BOOST_THREAD_DEFINES_RECURSIVE_TIMED_MUTEX_NATIVE_HANDLE
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typedef pthread_mutex_t* native_handle_type;
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native_handle_type native_handle()
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{
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return &m;
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}
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#if defined BOOST_THREAD_PROVIDES_NESTED_LOCKS
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typedef unique_lock<recursive_timed_mutex> scoped_timed_lock;
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typedef detail::try_lock_wrapper<recursive_timed_mutex> scoped_try_lock;
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typedef scoped_timed_lock scoped_lock;
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#endif
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};
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}
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#include <boost/config/abi_suffix.hpp>
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#endif
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