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//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2005-2011. 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)
//
// See http://www.boost.org/libs/interprocess for documentation.
//
//////////////////////////////////////////////////////////////////////////////
#ifndef BOOST_INTERPROCESS_PTHREAD_HELPERS_HPP
#define BOOST_INTERPROCESS_PTHREAD_HELPERS_HPP
#if (defined _MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif
#include <boost/interprocess/detail/config_begin.hpp>
#include <boost/interprocess/detail/workaround.hpp>
#include <pthread.h>
#include <errno.h>
#include <boost/interprocess/exceptions.hpp>
namespace boost {
namespace interprocess {
namespace ipcdetail{
#if defined BOOST_INTERPROCESS_POSIX_PROCESS_SHARED
//!Makes pthread_mutexattr_t cleanup easy when using exceptions
struct mutexattr_wrapper
{
//!Constructor
mutexattr_wrapper(bool recursive = false)
{
if(pthread_mutexattr_init(&m_attr)!=0 ||
pthread_mutexattr_setpshared(&m_attr, PTHREAD_PROCESS_SHARED)!= 0 ||
(recursive &&
pthread_mutexattr_settype(&m_attr, PTHREAD_MUTEX_RECURSIVE)!= 0 ))
throw interprocess_exception("pthread_mutexattr_xxxx failed");
}
//!Destructor
~mutexattr_wrapper() { pthread_mutexattr_destroy(&m_attr); }
//!This allows using mutexattr_wrapper as pthread_mutexattr_t
operator pthread_mutexattr_t&() { return m_attr; }
pthread_mutexattr_t m_attr;
};
//!Makes pthread_condattr_t cleanup easy when using exceptions
struct condattr_wrapper
{
//!Constructor
condattr_wrapper()
{
if(pthread_condattr_init(&m_attr)!=0 ||
pthread_condattr_setpshared(&m_attr, PTHREAD_PROCESS_SHARED)!= 0)
throw interprocess_exception("pthread_condattr_xxxx failed");
}
//!Destructor
~condattr_wrapper() { pthread_condattr_destroy(&m_attr); }
//!This allows using condattr_wrapper as pthread_condattr_t
operator pthread_condattr_t&(){ return m_attr; }
pthread_condattr_t m_attr;
};
//!Makes initialized pthread_mutex_t cleanup easy when using exceptions
class mutex_initializer
{
public:
//!Constructor. Takes interprocess_mutex attributes to initialize the interprocess_mutex
mutex_initializer(pthread_mutex_t &mut, pthread_mutexattr_t &mut_attr)
: mp_mut(&mut)
{
if(pthread_mutex_init(mp_mut, &mut_attr) != 0)
throw interprocess_exception("pthread_mutex_init failed");
}
~mutex_initializer() { if(mp_mut) pthread_mutex_destroy(mp_mut); }
void release() {mp_mut = 0; }
private:
pthread_mutex_t *mp_mut;
};
//!Makes initialized pthread_cond_t cleanup easy when using exceptions
class condition_initializer
{
public:
condition_initializer(pthread_cond_t &cond, pthread_condattr_t &cond_attr)
: mp_cond(&cond)
{
if(pthread_cond_init(mp_cond, &cond_attr)!= 0)
throw interprocess_exception("pthread_cond_init failed");
}
~condition_initializer() { if(mp_cond) pthread_cond_destroy(mp_cond); }
void release() { mp_cond = 0; }
private:
pthread_cond_t *mp_cond;
};
#endif // #if defined BOOST_INTERPROCESS_POSIX_PROCESS_SHARED
#if defined(BOOST_INTERPROCESS_POSIX_BARRIERS) && defined(BOOST_INTERPROCESS_POSIX_PROCESS_SHARED)
//!Makes pthread_barrierattr_t cleanup easy when using exceptions
struct barrierattr_wrapper
{
//!Constructor
barrierattr_wrapper()
{
if(pthread_barrierattr_init(&m_attr)!=0 ||
pthread_barrierattr_setpshared(&m_attr, PTHREAD_PROCESS_SHARED)!= 0)
throw interprocess_exception("pthread_barrierattr_xxx failed");
}
//!Destructor
~barrierattr_wrapper() { pthread_barrierattr_destroy(&m_attr); }
//!This allows using mutexattr_wrapper as pthread_barrierattr_t
operator pthread_barrierattr_t&() { return m_attr; }
pthread_barrierattr_t m_attr;
};
//!Makes initialized pthread_barrier_t cleanup easy when using exceptions
class barrier_initializer
{
public:
//!Constructor. Takes barrier attributes to initialize the barrier
barrier_initializer(pthread_barrier_t &mut,
pthread_barrierattr_t &mut_attr,
int count)
: mp_barrier(&mut)
{
if(pthread_barrier_init(mp_barrier, &mut_attr, count) != 0)
throw interprocess_exception("pthread_barrier_init failed");
}
~barrier_initializer() { if(mp_barrier) pthread_barrier_destroy(mp_barrier); }
void release() {mp_barrier = 0; }
private:
pthread_barrier_t *mp_barrier;
};
#endif //#if defined(BOOST_INTERPROCESS_POSIX_BARRIERS) && defined(BOOST_INTERPROCESS_POSIX_PROCESS_SHARED)
}//namespace ipcdetail
}//namespace interprocess
}//namespace boost
#include <boost/interprocess/detail/config_end.hpp>
#endif //ifdef BOOST_INTERPROCESS_PTHREAD_HELPERS_HPP
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