win32_thread.c (3085B)
1 //======================================================================== 2 // GLFW 3.4 Win32 - 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 28 #include "internal.h" 29 30 #if defined(GLFW_BUILD_WIN32_THREAD) 31 32 #include <assert.h> 33 34 35 ////////////////////////////////////////////////////////////////////////// 36 ////// GLFW platform API ////// 37 ////////////////////////////////////////////////////////////////////////// 38 39 GLFWbool _glfwPlatformCreateTls(_GLFWtls* tls) 40 { 41 assert(tls->win32.allocated == GLFW_FALSE); 42 43 tls->win32.index = TlsAlloc(); 44 if (tls->win32.index == TLS_OUT_OF_INDEXES) 45 { 46 _glfwInputError(GLFW_PLATFORM_ERROR, "Win32: Failed to allocate TLS index"); 47 return GLFW_FALSE; 48 } 49 50 tls->win32.allocated = GLFW_TRUE; 51 return GLFW_TRUE; 52 } 53 54 void _glfwPlatformDestroyTls(_GLFWtls* tls) 55 { 56 if (tls->win32.allocated) 57 TlsFree(tls->win32.index); 58 memset(tls, 0, sizeof(_GLFWtls)); 59 } 60 61 void* _glfwPlatformGetTls(_GLFWtls* tls) 62 { 63 assert(tls->win32.allocated == GLFW_TRUE); 64 return TlsGetValue(tls->win32.index); 65 } 66 67 void _glfwPlatformSetTls(_GLFWtls* tls, void* value) 68 { 69 assert(tls->win32.allocated == GLFW_TRUE); 70 TlsSetValue(tls->win32.index, value); 71 } 72 73 GLFWbool _glfwPlatformCreateMutex(_GLFWmutex* mutex) 74 { 75 assert(mutex->win32.allocated == GLFW_FALSE); 76 InitializeCriticalSection(&mutex->win32.section); 77 return mutex->win32.allocated = GLFW_TRUE; 78 } 79 80 void _glfwPlatformDestroyMutex(_GLFWmutex* mutex) 81 { 82 if (mutex->win32.allocated) 83 DeleteCriticalSection(&mutex->win32.section); 84 memset(mutex, 0, sizeof(_GLFWmutex)); 85 } 86 87 void _glfwPlatformLockMutex(_GLFWmutex* mutex) 88 { 89 assert(mutex->win32.allocated == GLFW_TRUE); 90 EnterCriticalSection(&mutex->win32.section); 91 } 92 93 void _glfwPlatformUnlockMutex(_GLFWmutex* mutex) 94 { 95 assert(mutex->win32.allocated == GLFW_TRUE); 96 LeaveCriticalSection(&mutex->win32.section); 97 } 98 99 #endif // GLFW_BUILD_WIN32_THREAD 100