1/*
2Copyright (c) 2012, Broadcom Europe Ltd
3All rights reserved.
4
5Redistribution and use in source and binary forms, with or without
6modification, are permitted provided that the following conditions are met:
7 * Redistributions of source code must retain the above copyright
8 notice, this list of conditions and the following disclaimer.
9 * Redistributions in binary form must reproduce the above copyright
10 notice, this list of conditions and the following disclaimer in the
11 documentation and/or other materials provided with the distribution.
12 * Neither the name of the copyright holder nor the
13 names of its contributors may be used to endorse or promote products
14 derived from this software without specific prior written permission.
15
16THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
17ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
20DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26*/
27
28/*=============================================================================
29VideoCore OS Abstraction Layer - reentrant mutexes created from regular ones.
30=============================================================================*/
31
32#ifndef VCOS_GENERIC_REENTRANT_MUTEX_H
33#define VCOS_GENERIC_REENTRANT_MUTEX_H
34
35#ifdef __cplusplus
36extern "C" {
37#endif
38
39#include "interface/vcos/vcos_types.h"
40
41/**
42 * \file
43 *
44 * Reentrant Mutexes from regular ones.
45 *
46 */
47
48typedef struct VCOS_REENTRANT_MUTEX_T
49{
50 VCOS_MUTEX_T mutex;
51 VCOS_THREAD_T *owner;
52 unsigned count;
53} VCOS_REENTRANT_MUTEX_T;
54
55/* Extern definitions of functions that do the actual work */
56
57VCOSPRE_ VCOS_STATUS_T VCOSPOST_ vcos_generic_reentrant_mutex_create(VCOS_REENTRANT_MUTEX_T *m, const char *name);
58
59VCOSPRE_ void VCOSPOST_ vcos_generic_reentrant_mutex_delete(VCOS_REENTRANT_MUTEX_T *m);
60
61VCOSPRE_ void VCOSPOST_ vcos_generic_reentrant_mutex_lock(VCOS_REENTRANT_MUTEX_T *m);
62
63VCOSPRE_ void VCOSPOST_ vcos_generic_reentrant_mutex_unlock(VCOS_REENTRANT_MUTEX_T *m);
64
65/* Inline forwarding functions */
66
67#if defined(VCOS_INLINE_BODIES)
68
69VCOS_INLINE_IMPL
70VCOS_STATUS_T vcos_reentrant_mutex_create(VCOS_REENTRANT_MUTEX_T *m, const char *name) {
71 return vcos_generic_reentrant_mutex_create(m,name);
72}
73
74VCOS_INLINE_IMPL
75void vcos_reentrant_mutex_delete(VCOS_REENTRANT_MUTEX_T *m) {
76 vcos_generic_reentrant_mutex_delete(m);
77}
78
79VCOS_INLINE_IMPL
80void vcos_reentrant_mutex_lock(VCOS_REENTRANT_MUTEX_T *m) {
81 vcos_generic_reentrant_mutex_lock(m);
82}
83
84VCOS_INLINE_IMPL
85void vcos_reentrant_mutex_unlock(VCOS_REENTRANT_MUTEX_T *m) {
86 vcos_generic_reentrant_mutex_unlock(m);
87}
88#endif
89
90#ifdef __cplusplus
91}
92#endif
93#endif
94
95
96