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vn-verdnaturachat/ios/Pods/boost-for-react-native/boost/thread/pthread/recursive_mutex.hpp

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#ifndef BOOST_THREAD_PTHREAD_RECURSIVE_MUTEX_HPP
#define BOOST_THREAD_PTHREAD_RECURSIVE_MUTEX_HPP
// (C) Copyright 2007-8 Anthony Williams
// (C) Copyright 2011-2012 Vicente J. Botet Escriba
// 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)
#include <pthread.h>
#include <boost/throw_exception.hpp>
#include <boost/thread/exceptions.hpp>
#if defined BOOST_THREAD_PROVIDES_NESTED_LOCKS
#include <boost/thread/lock_types.hpp>
#endif
#include <boost/thread/thread_time.hpp>
#include <boost/assert.hpp>
#ifndef _WIN32
#include <unistd.h>
#endif
#include <boost/date_time/posix_time/conversion.hpp>
#include <errno.h>
#include <boost/thread/pthread/timespec.hpp>
#include <boost/thread/pthread/pthread_mutex_scoped_lock.hpp>
#ifdef BOOST_THREAD_USES_CHRONO
#include <boost/chrono/system_clocks.hpp>
#include <boost/chrono/ceil.hpp>
#endif
#include <boost/thread/detail/delete.hpp>
#if (defined _POSIX_TIMEOUTS && (_POSIX_TIMEOUTS-0)>=200112L) \
|| (defined __ANDROID__ && defined __ANDROID_API__ && __ANDROID_API__ >= 21)
#ifndef BOOST_PTHREAD_HAS_TIMEDLOCK
#define BOOST_PTHREAD_HAS_TIMEDLOCK
#endif
#endif
#if defined BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE \
|| defined __ANDROID__
#define BOOST_THREAD_HAS_PTHREAD_MUTEXATTR_SETTYPE
#endif
#if defined BOOST_THREAD_HAS_PTHREAD_MUTEXATTR_SETTYPE && defined BOOST_PTHREAD_HAS_TIMEDLOCK
#define BOOST_USE_PTHREAD_RECURSIVE_TIMEDLOCK
#endif
#include <boost/config/abi_prefix.hpp>
namespace boost
{
class recursive_mutex
{
private:
pthread_mutex_t m;
#ifndef BOOST_THREAD_HAS_PTHREAD_MUTEXATTR_SETTYPE
pthread_cond_t cond;
bool is_locked;
pthread_t owner;
unsigned count;
#endif
public:
BOOST_THREAD_NO_COPYABLE(recursive_mutex)
recursive_mutex()
{
#ifdef BOOST_THREAD_HAS_PTHREAD_MUTEXATTR_SETTYPE
pthread_mutexattr_t attr;
int const init_attr_res=pthread_mutexattr_init(&attr);
if(init_attr_res)
{
boost::throw_exception(thread_resource_error(init_attr_res, "boost:: recursive_mutex constructor failed in pthread_mutexattr_init"));
}
int const set_attr_res=pthread_mutexattr_settype(&attr,PTHREAD_MUTEX_RECURSIVE);
if(set_attr_res)
{
BOOST_VERIFY(!pthread_mutexattr_destroy(&attr));
boost::throw_exception(thread_resource_error(set_attr_res, "boost:: recursive_mutex constructor failed in pthread_mutexattr_settype"));
}
int const res=pthread_mutex_init(&m,&attr);
if(res)
{
BOOST_VERIFY(!pthread_mutexattr_destroy(&attr));
boost::throw_exception(thread_resource_error(res, "boost:: recursive_mutex constructor failed in pthread_mutex_init"));
}
BOOST_VERIFY(!pthread_mutexattr_destroy(&attr));
#else
int const res=pthread_mutex_init(&m,NULL);
if(res)
{
boost::throw_exception(thread_resource_error(res, "boost:: recursive_mutex constructor failed in pthread_mutex_init"));
}
int const res2=pthread_cond_init(&cond,NULL);
if(res2)
{
BOOST_VERIFY(!pthread_mutex_destroy(&m));
boost::throw_exception(thread_resource_error(res2, "boost:: recursive_mutex constructor failed in pthread_cond_init"));
}
is_locked=false;
count=0;
#endif
}
~recursive_mutex()
{
BOOST_VERIFY(!pthread_mutex_destroy(&m));
#ifndef BOOST_THREAD_HAS_PTHREAD_MUTEXATTR_SETTYPE
BOOST_VERIFY(!pthread_cond_destroy(&cond));
#endif
}
#ifdef BOOST_THREAD_HAS_PTHREAD_MUTEXATTR_SETTYPE
void lock()
{
BOOST_VERIFY(!pthread_mutex_lock(&m));
}
void unlock()
{
BOOST_VERIFY(!pthread_mutex_unlock(&m));
}
bool try_lock() BOOST_NOEXCEPT
{
int const res=pthread_mutex_trylock(&m);
BOOST_ASSERT(!res || res==EBUSY);
return !res;
}
#define BOOST_THREAD_DEFINES_RECURSIVE_MUTEX_NATIVE_HANDLE
typedef pthread_mutex_t* native_handle_type;
native_handle_type native_handle()
{
return &m;
}
#else
void lock()
{
boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
if(is_locked && pthread_equal(owner,pthread_self()))
{
++count;
return;
}
while(is_locked)
{
BOOST_VERIFY(!pthread_cond_wait(&cond,&m));
}
is_locked=true;
++count;
owner=pthread_self();
}
void unlock()
{
boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
if(!--count)
{
is_locked=false;
}
BOOST_VERIFY(!pthread_cond_signal(&cond));
}
bool try_lock()
{
boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
if(is_locked && !pthread_equal(owner,pthread_self()))
{
return false;
}
is_locked=true;
++count;
owner=pthread_self();
return true;
}
#endif
#if defined BOOST_THREAD_PROVIDES_NESTED_LOCKS
typedef unique_lock<recursive_mutex> scoped_lock;
typedef detail::try_lock_wrapper<recursive_mutex> scoped_try_lock;
#endif
};
typedef recursive_mutex recursive_try_mutex;
class recursive_timed_mutex
{
private:
pthread_mutex_t m;
#ifndef BOOST_USE_PTHREAD_RECURSIVE_TIMEDLOCK
pthread_cond_t cond;
bool is_locked;
pthread_t owner;
unsigned count;
#endif
public:
BOOST_THREAD_NO_COPYABLE(recursive_timed_mutex)
recursive_timed_mutex()
{
#ifdef BOOST_USE_PTHREAD_RECURSIVE_TIMEDLOCK
pthread_mutexattr_t attr;
int const init_attr_res=pthread_mutexattr_init(&attr);
if(init_attr_res)
{
boost::throw_exception(thread_resource_error(init_attr_res, "boost:: recursive_timed_mutex constructor failed in pthread_mutexattr_init"));
}
int const set_attr_res=pthread_mutexattr_settype(&attr,PTHREAD_MUTEX_RECURSIVE);
if(set_attr_res)
{
boost::throw_exception(thread_resource_error(set_attr_res, "boost:: recursive_timed_mutex constructor failed in pthread_mutexattr_settype"));
}
int const res=pthread_mutex_init(&m,&attr);
if(res)
{
BOOST_VERIFY(!pthread_mutexattr_destroy(&attr));
boost::throw_exception(thread_resource_error(res, "boost:: recursive_timed_mutex constructor failed in pthread_mutex_init"));
}
BOOST_VERIFY(!pthread_mutexattr_destroy(&attr));
#else
int const res=pthread_mutex_init(&m,NULL);
if(res)
{
boost::throw_exception(thread_resource_error(res, "boost:: recursive_timed_mutex constructor failed in pthread_mutex_init"));
}
int const res2=pthread_cond_init(&cond,NULL);
if(res2)
{
BOOST_VERIFY(!pthread_mutex_destroy(&m));
boost::throw_exception(thread_resource_error(res2, "boost:: recursive_timed_mutex constructor failed in pthread_cond_init"));
}
is_locked=false;
count=0;
#endif
}
~recursive_timed_mutex()
{
BOOST_VERIFY(!pthread_mutex_destroy(&m));
#ifndef BOOST_USE_PTHREAD_RECURSIVE_TIMEDLOCK
BOOST_VERIFY(!pthread_cond_destroy(&cond));
#endif
}
#if defined BOOST_THREAD_USES_DATETIME
template<typename TimeDuration>
bool timed_lock(TimeDuration const & relative_time)
{
return timed_lock(get_system_time()+relative_time);
}
#endif
#ifdef BOOST_USE_PTHREAD_RECURSIVE_TIMEDLOCK
void lock()
{
BOOST_VERIFY(!pthread_mutex_lock(&m));
}
void unlock()
{
BOOST_VERIFY(!pthread_mutex_unlock(&m));
}
bool try_lock()
{
int const res=pthread_mutex_trylock(&m);
BOOST_ASSERT(!res || res==EBUSY);
return !res;
}
private:
bool do_try_lock_until(struct timespec const &timeout)
{
int const res=pthread_mutex_timedlock(&m,&timeout);
BOOST_ASSERT(!res || res==ETIMEDOUT);
return !res;
}
public:
#else
void lock()
{
boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
if(is_locked && pthread_equal(owner,pthread_self()))
{
++count;
return;
}
while(is_locked)
{
BOOST_VERIFY(!pthread_cond_wait(&cond,&m));
}
is_locked=true;
++count;
owner=pthread_self();
}
void unlock()
{
boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
if(!--count)
{
is_locked=false;
}
BOOST_VERIFY(!pthread_cond_signal(&cond));
}
bool try_lock() BOOST_NOEXCEPT
{
boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
if(is_locked && !pthread_equal(owner,pthread_self()))
{
return false;
}
is_locked=true;
++count;
owner=pthread_self();
return true;
}
private:
bool do_try_lock_until(struct timespec const &timeout)
{
boost::pthread::pthread_mutex_scoped_lock const local_lock(&m);
if(is_locked && pthread_equal(owner,pthread_self()))
{
++count;
return true;
}
while(is_locked)
{
int const cond_res=pthread_cond_timedwait(&cond,&m,&timeout);
if(cond_res==ETIMEDOUT)
{
return false;
}
BOOST_ASSERT(!cond_res);
}
is_locked=true;
++count;
owner=pthread_self();
return true;
}
public:
#endif
#if defined BOOST_THREAD_USES_DATETIME
bool timed_lock(system_time const & abs_time)
{
struct timespec const ts=detail::to_timespec(abs_time);
return do_try_lock_until(ts);
}
#endif
#ifdef BOOST_THREAD_USES_CHRONO
template <class Rep, class Period>
bool try_lock_for(const chrono::duration<Rep, Period>& rel_time)
{
return try_lock_until(chrono::steady_clock::now() + rel_time);
}
template <class Clock, class Duration>
bool try_lock_until(const chrono::time_point<Clock, Duration>& t)
{
using namespace chrono;
system_clock::time_point s_now = system_clock::now();
typename Clock::time_point c_now = Clock::now();
return try_lock_until(s_now + ceil<nanoseconds>(t - c_now));
}
template <class Duration>
bool try_lock_until(const chrono::time_point<chrono::system_clock, Duration>& t)
{
using namespace chrono;
typedef time_point<system_clock, nanoseconds> nano_sys_tmpt;
return try_lock_until(nano_sys_tmpt(ceil<nanoseconds>(t.time_since_epoch())));
}
bool try_lock_until(const chrono::time_point<chrono::system_clock, chrono::nanoseconds>& tp)
{
//using namespace chrono;
chrono::nanoseconds d = tp.time_since_epoch();
timespec ts = boost::detail::to_timespec(d);
return do_try_lock_until(ts);
}
#endif
#define BOOST_THREAD_DEFINES_RECURSIVE_TIMED_MUTEX_NATIVE_HANDLE
typedef pthread_mutex_t* native_handle_type;
native_handle_type native_handle()
{
return &m;
}
#if defined BOOST_THREAD_PROVIDES_NESTED_LOCKS
typedef unique_lock<recursive_timed_mutex> scoped_timed_lock;
typedef detail::try_lock_wrapper<recursive_timed_mutex> scoped_try_lock;
typedef scoped_timed_lock scoped_lock;
#endif
};
}
#include <boost/config/abi_suffix.hpp>
#endif
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