1 /**************************************************************************
2 *
3 * Copyright 2020 Lag Free Games, LLC
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28 #ifndef RWLOCK_H
29 #define RWLOCK_H
30
31 #ifdef _WIN32
32 #include <windows.h>
33 #else
34 #include <pthread.h>
35 #endif
36
37 #ifdef __cplusplus
38 extern "C" {
39 #endif
40
41 struct u_rwlock
42 {
43 #ifdef _WIN32
44 SRWLOCK rwlock;
45 #else
46 pthread_rwlock_t rwlock;
47 #endif
48 };
49
u_rwlock_init(struct u_rwlock * rwlock)50 static inline int u_rwlock_init(struct u_rwlock *rwlock)
51 {
52 #ifdef _WIN32
53 InitializeSRWLock(&rwlock->rwlock);
54 return 0;
55 #else
56 return pthread_rwlock_init(&rwlock->rwlock, NULL);
57 #endif
58 }
59
u_rwlock_destroy(struct u_rwlock * rwlock)60 static inline int u_rwlock_destroy(struct u_rwlock *rwlock)
61 {
62 #ifdef _WIN32
63 return 0;
64 #else
65 return pthread_rwlock_destroy(&rwlock->rwlock);
66 #endif
67 }
68
u_rwlock_rdlock(struct u_rwlock * rwlock)69 static inline int u_rwlock_rdlock(struct u_rwlock *rwlock)
70 {
71 #ifdef _WIN32
72 AcquireSRWLockShared(&rwlock->rwlock);
73 return 0;
74 #else
75 return pthread_rwlock_rdlock(&rwlock->rwlock);
76 #endif
77 }
78
u_rwlock_rdunlock(struct u_rwlock * rwlock)79 static inline int u_rwlock_rdunlock(struct u_rwlock *rwlock)
80 {
81 #ifdef _WIN32
82 ReleaseSRWLockShared(&rwlock->rwlock);
83 return 0;
84 #else
85 return pthread_rwlock_unlock(&rwlock->rwlock);
86 #endif
87 }
88
u_rwlock_wrlock(struct u_rwlock * rwlock)89 static inline int u_rwlock_wrlock(struct u_rwlock *rwlock)
90 {
91 #ifdef _WIN32
92 AcquireSRWLockExclusive(&rwlock->rwlock);
93 return 0;
94 #else
95 return pthread_rwlock_wrlock(&rwlock->rwlock);
96 #endif
97 }
98
u_rwlock_wrunlock(struct u_rwlock * rwlock)99 static inline int u_rwlock_wrunlock(struct u_rwlock *rwlock)
100 {
101 #ifdef _WIN32
102 ReleaseSRWLockExclusive(&rwlock->rwlock);
103 return 0;
104 #else
105 return pthread_rwlock_unlock(&rwlock->rwlock);
106 #endif
107 }
108
109 #ifdef __cplusplus
110 }
111 #endif
112
113 #endif
114