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/*
* Copyright (c), Zeriph Enterprises
* All rights reserved.
*
* Contributor(s):
* Zechariah Perez, omni (at) zeriph (dot) com
*
* THIS SOFTWARE IS PROVIDED BY ZERIPH AND CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL ZERIPH AND CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#if !defined(OMNI_CONDITIONAL_HPP)
#define OMNI_CONDITIONAL_HPP 1
#include <omni/defs/class_macros.hpp>
#include <omni/types/tick_t.hpp>
#include <omni/types/thread_t.hpp>
#include <omni/sync/lock.hpp>
#include <omni/sync/scoped_lock.hpp>
#include <omni/chrono/tick.hpp>
#if !defined(OMNI_OS_WIN)
#include <errno.h> // errno
#endif
namespace omni {
namespace sync {
class conditional
{
public:
conditional();
explicit conditional(bool initially_signaled);
~conditional();
void broadcast();
void reset();
inline bool signaled() const
{
omni::sync::scoped_lock<omni::sync::mutex_t> slock(&this->m_wait);
return this->m_signaled;
}
void signal();
bool wait();
bool wait(unsigned long timeout_ms);
bool operator==(const omni::sync::conditional& o);
bool operator!=(const omni::sync::conditional& o);
OMNI_MEMBERS_FW(omni::sync::conditional) // disposing,name,type(),hash()
private:
// defined but not implemented, doesn't make sense to copy
conditional(const omni::sync::conditional &cp);
omni::sync::conditional& operator=(const omni::sync::conditional& other);
void _init();
omni::sync::cond_t m_signal;
mutable omni::sync::mutex_t m_wait;
unsigned long m_waitreq;
volatile mutable bool m_signaled;
};
}
}
#endif // OMNI_CONDITIONAL_HPP