openmv/common/mutex.h
iabdalkader daf2bb30da misc: Restructure repo.
Signed-off-by: iabdalkader <i.abdalkader@gmail.com>
2025-04-13 08:28:34 +02:00

45 lines
1.7 KiB
C

/*
* SPDX-License-Identifier: MIT
*
* Copyright (C) 2013-2024 OpenMV, LLC.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* Mutex implementation.
*/
#ifndef __MUTEX_H__
#define __MUTEX_H__
#include <stdint.h>
#define MUTEX_TID_IDE (1 << 0)
#define MUTEX_TID_OMV (1 << 1)
typedef volatile struct {
uint32_t tid;
uint32_t lock;
uint32_t last_tid;
} omv_mutex_t;
void mutex_init0(omv_mutex_t *mutex);
void mutex_lock(omv_mutex_t *mutex, uint32_t tid);
int mutex_try_lock(omv_mutex_t *mutex, uint32_t tid);
int mutex_try_lock_alternate(omv_mutex_t *mutex, uint32_t tid);
int mutex_lock_timeout(omv_mutex_t *mutex, uint32_t tid, uint32_t timeout);
void mutex_unlock(omv_mutex_t *mutex, uint32_t tid);
#endif /* __MUTEX_H__ */