1 /******************************************************************************
2  *
3  *  Copyright (C) 2015 Google, Inc.
4  *
5  *  Licensed under the Apache License, Version 2.0 (the "License");
6  *  you may not use this file except in compliance with the License.
7  *  You may obtain a copy of the License at:
8  *
9  *  http://www.apache.org/licenses/LICENSE-2.0
10  *
11  *  Unless required by applicable law or agreed to in writing, software
12  *  distributed under the License is distributed on an "AS IS" BASIS,
13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  *  See the License for the specific language governing permissions and
15  *  limitations under the License.
16  *
17  ******************************************************************************/
18 
19 #ifndef __MUTEX_H__
20 #define __MUTEX_H__
21 
22 #include "freertos/FreeRTOS.h"
23 #include "freertos/task.h"
24 #include "freertos/queue.h"
25 #include "freertos/semphr.h"
26 #include "osi/semaphore.h"
27 
28 #define OSI_MUTEX_MAX_TIMEOUT OSI_SEM_MAX_TIMEOUT
29 
30 #define osi_mutex_valid( x ) ( ( ( *x ) == NULL) ? pdFALSE : pdTRUE )
31 #define osi_mutex_set_invalid( x ) ( ( *x ) = NULL )
32 
33 typedef xSemaphoreHandle osi_mutex_t;
34 
35 int osi_mutex_new(osi_mutex_t *mutex);
36 
37 int osi_mutex_lock(osi_mutex_t *mutex, uint32_t timeout);
38 
39 void osi_mutex_unlock(osi_mutex_t *mutex);
40 
41 void osi_mutex_free(osi_mutex_t *mutex);
42 
43 /* Just for a global mutex */
44 int osi_mutex_global_init(void);
45 
46 void osi_mutex_global_deinit(void);
47 
48 void osi_mutex_global_lock(void);
49 
50 void osi_mutex_global_unlock(void);
51 
52 #endif /* __MUTEX_H__ */
53