win32_thread.cc (3046B)
1 //======================================================================== 2 // GLFW 3.3 Win32 - 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 32 33 ////////////////////////////////////////////////////////////////////////// 34 ////// GLFW platform API ////// 35 ////////////////////////////////////////////////////////////////////////// 36 37 GLFWbool _glfwPlatformCreateTls(_GLFWtls* tls) 38 { 39 assert(tls->win32.allocated == GLFW_FALSE); 40 41 tls->win32.index = TlsAlloc(); 42 if (tls->win32.index == TLS_OUT_OF_INDEXES) 43 { 44 _glfwInputErrorWin32(GLFW_PLATFORM_ERROR, 45 "Win32: Failed to allocate TLS index"); 46 return GLFW_FALSE; 47 } 48 49 tls->win32.allocated = GLFW_TRUE; 50 return GLFW_TRUE; 51 } 52 53 void _glfwPlatformDestroyTls(_GLFWtls* tls) 54 { 55 if (tls->win32.allocated) 56 TlsFree(tls->win32.index); 57 memset(tls, 0, sizeof(_GLFWtls)); 58 } 59 60 void* _glfwPlatformGetTls(_GLFWtls* tls) 61 { 62 assert(tls->win32.allocated == GLFW_TRUE); 63 return TlsGetValue(tls->win32.index); 64 } 65 66 void _glfwPlatformSetTls(_GLFWtls* tls, void* value) 67 { 68 assert(tls->win32.allocated == GLFW_TRUE); 69 TlsSetValue(tls->win32.index, value); 70 } 71 72 GLFWbool _glfwPlatformCreateMutex(_GLFWmutex* mutex) 73 { 74 assert(mutex->win32.allocated == GLFW_FALSE); 75 InitializeCriticalSection(&mutex->win32.section); 76 return mutex->win32.allocated = GLFW_TRUE; 77 } 78 79 void _glfwPlatformDestroyMutex(_GLFWmutex* mutex) 80 { 81 if (mutex->win32.allocated) 82 DeleteCriticalSection(&mutex->win32.section); 83 memset(mutex, 0, sizeof(_GLFWmutex)); 84 } 85 86 void _glfwPlatformLockMutex(_GLFWmutex* mutex) 87 { 88 assert(mutex->win32.allocated == GLFW_TRUE); 89 EnterCriticalSection(&mutex->win32.section); 90 } 91 92 void _glfwPlatformUnlockMutex(_GLFWmutex* mutex) 93 { 94 assert(mutex->win32.allocated == GLFW_TRUE); 95 LeaveCriticalSection(&mutex->win32.section); 96 } 97