1a9643ea8Slogwang /* 2*2317ada5Sfengbojiang * Copyright (C) 2017-2021 THL A29 Limited, a Tencent company. 3a9643ea8Slogwang * All rights reserved. 4a9643ea8Slogwang * 5a9643ea8Slogwang * Redistribution and use in source and binary forms, with or without 6a9643ea8Slogwang * modification, are permitted provided that the following conditions are met: 7a9643ea8Slogwang * 8a9643ea8Slogwang * 1. Redistributions of source code must retain the above copyright notice, this 9a9643ea8Slogwang * list of conditions and the following disclaimer. 10a9643ea8Slogwang * 2. Redistributions in binary form must reproduce the above copyright notice, 11a9643ea8Slogwang * this list of conditions and the following disclaimer in the documentation 12a9643ea8Slogwang * and/or other materials provided with the distribution. 13a9643ea8Slogwang * 14a9643ea8Slogwang * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 15a9643ea8Slogwang * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 16a9643ea8Slogwang * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 17a9643ea8Slogwang * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR 18a9643ea8Slogwang * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 19a9643ea8Slogwang * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 20a9643ea8Slogwang * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 21a9643ea8Slogwang * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22a9643ea8Slogwang * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 23a9643ea8Slogwang * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24a9643ea8Slogwang * 25a9643ea8Slogwang */ 26a9643ea8Slogwang 27a9643ea8Slogwang #ifndef _FSTACK_SYS_RWLOCK_H_ 28a9643ea8Slogwang #define _FSTACK_SYS_RWLOCK_H_ 29a9643ea8Slogwang #include_next <sys/rwlock.h> 30a9643ea8Slogwang 31a9643ea8Slogwang #undef rw_init 32a9643ea8Slogwang #undef rw_init_flags 33a9643ea8Slogwang #undef rw_destroy 34a9643ea8Slogwang #undef rw_wowned 35a9643ea8Slogwang #undef _rw_wlock 36a9643ea8Slogwang #undef _rw_try_wlock 37a9643ea8Slogwang #undef _rw_wunlock 38a9643ea8Slogwang #undef _rw_rlock 39a9643ea8Slogwang #undef _rw_try_rlock 40a9643ea8Slogwang #undef _rw_runlock 41a9643ea8Slogwang #undef _rw_try_upgrade 42a9643ea8Slogwang #undef _rw_downgrade 43a9643ea8Slogwang 44a9643ea8Slogwang #define DO_NOTHING do {} while(0) 45a9643ea8Slogwang 46a9643ea8Slogwang void ff_rw_init_flags(struct lock_object *lo, const char *name, int opts); 47a9643ea8Slogwang 48a9643ea8Slogwang #define rw_init(rw, n) \ 49a9643ea8Slogwang rw_init_flags((rw), (n), 0) 50a9643ea8Slogwang #define rw_init_flags(rw, n, o) \ 51a9643ea8Slogwang ff_rw_init_flags(&(rw)->lock_object, (n), (o)) 52a9643ea8Slogwang #define rw_destroy(rw) DO_NOTHING 53a9643ea8Slogwang #define rw_wowned(rw) 1 54a9643ea8Slogwang #define _rw_wlock(rw, f, l) DO_NOTHING 55a9643ea8Slogwang #define _rw_try_wlock(rw, f, l) 1 56a9643ea8Slogwang #define _rw_wunlock(rw, f, l) DO_NOTHING 57a9643ea8Slogwang #define _rw_rlock(rw, f, l) DO_NOTHING 58a9643ea8Slogwang #define _rw_try_rlock(rw, f, l) 1 59a9643ea8Slogwang #define _rw_runlock(rw, f, l) DO_NOTHING 60a9643ea8Slogwang #define _rw_try_upgrade(rw, f, l) 1 61a9643ea8Slogwang #define _rw_downgrade(rw, f, l) DO_NOTHING 62a9643ea8Slogwang 63a9643ea8Slogwang #endif /* _FSTACK_SYS_RWLOCK_H_ */ 64