posix_thread.c (3322B)
1 //======================================================================== 2 // GLFW 3.3 POSIX - www.glfw.org 3 //------------------------------------------------------------------------ 4 // Copyright (c) 2002-2006 Marcus Geelnard 5 // Copyright (c) 2006-2017 Camilla Löwy <elmindreda@glfw.org> 6 // 7 // This software is provided 'as-is', without any express or implied 8 // warranty. In no event will the authors be held liable for any damages 9 // arising from the use of this software. 10 // 11 // Permission is granted to anyone to use this software for any purpose, 12 // including commercial applications, and to alter it and redistribute it 13 // freely, subject to the following restrictions: 14 // 15 // 1. The origin of this software must not be misrepresented; you must not 16 // claim that you wrote the original software. If you use this software 17 // in a product, an acknowledgment in the product documentation would 18 // be appreciated but is not required. 19 // 20 // 2. Altered source versions must be plainly marked as such, and must not 21 // be misrepresented as being the original software. 22 // 23 // 3. This notice may not be removed or altered from any source 24 // distribution. 25 // 26 //======================================================================== 27 // It is fine to use C99 in this file because it will not be built with VS 28 //======================================================================== 29 30 #include "internal.h" 31 32 #include <assert.h> 33 #include <string.h> 34 35 36 ////////////////////////////////////////////////////////////////////////// 37 ////// GLFW platform API ////// 38 ////////////////////////////////////////////////////////////////////////// 39 40 GLFWbool _glfwPlatformCreateTls(_GLFWtls* tls) 41 { 42 assert(tls->posix.allocated == GLFW_FALSE); 43 44 if (pthread_key_create(&tls->posix.key, NULL) != 0) 45 { 46 _glfwInputError(GLFW_PLATFORM_ERROR, 47 "POSIX: Failed to create context TLS"); 48 return GLFW_FALSE; 49 } 50 51 tls->posix.allocated = GLFW_TRUE; 52 return GLFW_TRUE; 53 } 54 55 void _glfwPlatformDestroyTls(_GLFWtls* tls) 56 { 57 if (tls->posix.allocated) 58 pthread_key_delete(tls->posix.key); 59 memset(tls, 0, sizeof(_GLFWtls)); 60 } 61 62 void* _glfwPlatformGetTls(_GLFWtls* tls) 63 { 64 assert(tls->posix.allocated == GLFW_TRUE); 65 return pthread_getspecific(tls->posix.key); 66 } 67 68 void _glfwPlatformSetTls(_GLFWtls* tls, void* value) 69 { 70 assert(tls->posix.allocated == GLFW_TRUE); 71 pthread_setspecific(tls->posix.key, value); 72 } 73 74 GLFWbool _glfwPlatformCreateMutex(_GLFWmutex* mutex) 75 { 76 assert(mutex->posix.allocated == GLFW_FALSE); 77 78 if (pthread_mutex_init(&mutex->posix.handle, NULL) != 0) 79 { 80 _glfwInputError(GLFW_PLATFORM_ERROR, "POSIX: Failed to create mutex"); 81 return GLFW_FALSE; 82 } 83 84 return mutex->posix.allocated = GLFW_TRUE; 85 } 86 87 void _glfwPlatformDestroyMutex(_GLFWmutex* mutex) 88 { 89 if (mutex->posix.allocated) 90 pthread_mutex_destroy(&mutex->posix.handle); 91 memset(mutex, 0, sizeof(_GLFWmutex)); 92 } 93 94 void _glfwPlatformLockMutex(_GLFWmutex* mutex) 95 { 96 assert(mutex->posix.allocated == GLFW_TRUE); 97 pthread_mutex_lock(&mutex->posix.handle); 98 } 99 100 void _glfwPlatformUnlockMutex(_GLFWmutex* mutex) 101 { 102 assert(mutex->posix.allocated == GLFW_TRUE); 103 pthread_mutex_unlock(&mutex->posix.handle); 104 } 105