mirror of
https://github.com/outbackdingo/UltraGrid.git
synced 2026-03-21 06:40:15 +00:00
91 lines
2.9 KiB
C++
91 lines
2.9 KiB
C++
/**
|
|
* @file utils/wait_obj.h
|
|
* @author Martin Pulec <pulec@cesnet.cz>
|
|
*/
|
|
/*
|
|
* Copyright (c) 2013 CESNET z.s.p.o.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, is permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* 3. Neither the name of CESNET nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software without
|
|
* specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESSED 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 THE AUTHORS OR 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.
|
|
*/
|
|
|
|
#ifndef UTILS_WAIT_OBJ_H_
|
|
#define UTILS_WAIT_OBJ_H_
|
|
|
|
#ifdef __cplusplus
|
|
#include <condition_variable>
|
|
#include <mutex>
|
|
|
|
struct wait_obj {
|
|
public:
|
|
wait_obj() : m_val(false) {
|
|
}
|
|
void wait() {
|
|
std::unique_lock<std::mutex> lk(m_lock);
|
|
m_cv.wait(lk, [this] { return m_val; });
|
|
}
|
|
void reset() {
|
|
std::lock_guard<std::mutex> lk(m_lock);
|
|
m_val = false;
|
|
}
|
|
void notify() {
|
|
std::unique_lock<std::mutex> lk(m_lock);
|
|
m_val = true;
|
|
lk.unlock();
|
|
m_cv.notify_one();
|
|
}
|
|
private:
|
|
std::mutex m_lock;
|
|
std::condition_variable m_cv;
|
|
bool m_val;
|
|
};
|
|
#endif // __cplusplus
|
|
|
|
struct wait_obj;
|
|
|
|
//
|
|
// C wrapper
|
|
//
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif // __cplusplus
|
|
|
|
struct wait_obj *wait_obj_init(void);
|
|
void wait_obj_reset(struct wait_obj *);
|
|
void wait_obj_wait(struct wait_obj *);
|
|
void wait_obj_notify(struct wait_obj *);
|
|
void wait_obj_done(struct wait_obj *);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif // __cplusplus
|
|
|
|
#endif // VIDEO_H_
|
|
|