Blame include/wayland-thread.h

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/*
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 * Copyright (c) 2016-2019, NVIDIA CORPORATION. All rights reserved.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the "Software"),
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 * to deal in the Software without restriction, including without limitation
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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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 * and/or sell copies of the Software, and to permit persons to whom the
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 * Software is furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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 * DEALINGS IN THE SOFTWARE.
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 */
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#ifndef WAYLAND_THREAD_H
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#define WAYLAND_THREAD_H
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#include <wayland-client.h>
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#include <pthread.h>
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#include <stdbool.h>
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/*
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 * wlExternalApiLock()
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 *
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 * Tries to acquire the external API lock. If the lock is already acquired by
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 * another thread, it will block until the lock is released.
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 *
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 * Calling this function twice without calling wlExternalApiUnlock() in between
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 * will fail.
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 *
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 * First call to wlExternalApiLock() will initialize the external API lock
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 * resources.
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 *
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 * Returns 0 upon success; otherwise returns -1.
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 */
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int wlExternalApiLock(void);
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/*
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 * wlExternalApiUnlock()
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 *
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 * Releases the external API lock.
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 *
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 * Calling this function without a previous call to wlExternalApiLock() will
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 * fail.
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 *
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 * Returns 0 upon success; otherwise returns -1.
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 */
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int wlExternalApiUnlock(void);
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/*
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 * wlExternalApiDestroyLock()
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 *
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 * Releases and frees the the external API lock resources. This call should only
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 * be called as part of the global teardown.
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 */
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void wlExternalApiDestroyLock(void);
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/*
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 * wlEglInitializeMutex(pthread_mutex_t *mutex)
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 *
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 * Initialises the pthread mutex referenced by mutex.
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 */
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bool wlEglInitializeMutex(pthread_mutex_t *mutex);
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/*
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 * wlEglMutexDestroy(pthread_mutex_t *mutex)
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 *
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 * Destroys the pthread mutex referenced by mutex.
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 */
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void wlEglMutexDestroy(pthread_mutex_t *mutex);
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#endif