1 /* 2 * Copyright © 2015 Intel 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 */ 23 24 #ifndef UTIL_FUTEX_H 25 #define UTIL_FUTEX_H 26 27 #if THREAD_SANITIZER 28 #define UTIL_FUTEX_SUPPORTED 0 29 #else 30 #if defined(HAVE_LINUX_FUTEX_H) && defined(__linux__) 31 #define UTIL_FUTEX_SUPPORTED 1 32 #elif defined(__FreeBSD__) 33 #define UTIL_FUTEX_SUPPORTED 1 34 #elif defined(__OpenBSD__) 35 #define UTIL_FUTEX_SUPPORTED 1 36 #elif defined(_WIN32) && !defined(WINDOWS_NO_FUTEX) 37 #define UTIL_FUTEX_SUPPORTED 1 38 #else 39 #define UTIL_FUTEX_SUPPORTED 0 40 #endif 41 #endif 42 43 #if UTIL_FUTEX_SUPPORTED 44 #include <stdint.h> 45 #include <c11/time.h> 46 #endif 47 48 #ifdef __cplusplus 49 extern "C" { 50 #endif 51 52 #if UTIL_FUTEX_SUPPORTED 53 int futex_wake(uint32_t *addr, int32_t count); 54 int futex_wait(uint32_t *addr, int32_t value, const struct timespec *timeout); 55 #endif 56 57 #ifdef __cplusplus 58 } 59 #endif 60 61 #endif /* UTIL_FUTEX_H */ 62