posix_thread.cc (3172B)
1 //======================================================================== 2 // GLFW 3.3 POSIX - www.glfw.org 3 //------------------------------------------------------------------------ 4 // Copyright (c) 2002-2006 Marcus Geelnard 5 // Copyright (c) 2006-2016 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 28 #include "internal.h" 29 30 #include <assert.h> 31 #include <string.h> 32 33 34 ////////////////////////////////////////////////////////////////////////// 35 ////// GLFW platform API ////// 36 ////////////////////////////////////////////////////////////////////////// 37 38 GLFWbool _glfwPlatformCreateTls(_GLFWtls* tls) 39 { 40 assert(tls->posix.allocated == GLFW_FALSE); 41 42 if (pthread_key_create(&tls->posix.key, NULL) != 0) 43 { 44 _glfwInputError(GLFW_PLATFORM_ERROR, 45 "POSIX: Failed to create context TLS"); 46 return GLFW_FALSE; 47 } 48 49 tls->posix.allocated = GLFW_TRUE; 50 return GLFW_TRUE; 51 } 52 53 void _glfwPlatformDestroyTls(_GLFWtls* tls) 54 { 55 if (tls->posix.allocated) 56 pthread_key_delete(tls->posix.key); 57 memset(tls, 0, sizeof(_GLFWtls)); 58 } 59 60 void* _glfwPlatformGetTls(_GLFWtls* tls) 61 { 62 assert(tls->posix.allocated == GLFW_TRUE); 63 return pthread_getspecific(tls->posix.key); 64 } 65 66 void _glfwPlatformSetTls(_GLFWtls* tls, void* value) 67 { 68 assert(tls->posix.allocated == GLFW_TRUE); 69 pthread_setspecific(tls->posix.key, value); 70 } 71 72 GLFWbool _glfwPlatformCreateMutex(_GLFWmutex* mutex) 73 { 74 assert(mutex->posix.allocated == GLFW_FALSE); 75 76 if (pthread_mutex_init(&mutex->posix.handle, NULL) != 0) 77 { 78 _glfwInputError(GLFW_PLATFORM_ERROR, "POSIX: Failed to create mutex"); 79 return GLFW_FALSE; 80 } 81 82 return mutex->posix.allocated = GLFW_TRUE; 83 } 84 85 void _glfwPlatformDestroyMutex(_GLFWmutex* mutex) 86 { 87 if (mutex->posix.allocated) 88 pthread_mutex_destroy(&mutex->posix.handle); 89 memset(mutex, 0, sizeof(_GLFWmutex)); 90 } 91 92 void _glfwPlatformLockMutex(_GLFWmutex* mutex) 93 { 94 assert(mutex->posix.allocated == GLFW_TRUE); 95 pthread_mutex_lock(&mutex->posix.handle); 96 } 97 98 void _glfwPlatformUnlockMutex(_GLFWmutex* mutex) 99 { 100 assert(mutex->posix.allocated == GLFW_TRUE); 101 pthread_mutex_unlock(&mutex->posix.handle); 102 } 103