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cpputils / deps / glfw / src / win32_thread.c
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1//========================================================================
2// GLFW 3.3 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// Please use C89 style variable declarations in this file because VS 2010
28//========================================================================
29
30#include "internal.h"
31
32#include <assert.h>
33
34
35//////////////////////////////////////////////////////////////////////////
36////// GLFW platform API //////
37//////////////////////////////////////////////////////////////////////////
38
39GLFWbool _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 _glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
47 "Win32: Failed to allocate TLS index");
48 return GLFW_FALSE;
49 }
50
51 tls->win32.allocated = GLFW_TRUE;
52 return GLFW_TRUE;
53}
54
55void _glfwPlatformDestroyTls(_GLFWtls* tls)
56{
57 if (tls->win32.allocated)
58 TlsFree(tls->win32.index);
59 memset(tls, 0, sizeof(_GLFWtls));
60}
61
62void* _glfwPlatformGetTls(_GLFWtls* tls)
63{
64 assert(tls->win32.allocated == GLFW_TRUE);
65 return TlsGetValue(tls->win32.index);
66}
67
68void _glfwPlatformSetTls(_GLFWtls* tls, void* value)
69{
70 assert(tls->win32.allocated == GLFW_TRUE);
71 TlsSetValue(tls->win32.index, value);
72}
73
74GLFWbool _glfwPlatformCreateMutex(_GLFWmutex* mutex)
75{
76 assert(mutex->win32.allocated == GLFW_FALSE);
77 InitializeCriticalSection(&mutex->win32.section);
78 return mutex->win32.allocated = GLFW_TRUE;
79}
80
81void _glfwPlatformDestroyMutex(_GLFWmutex* mutex)
82{
83 if (mutex->win32.allocated)
84 DeleteCriticalSection(&mutex->win32.section);
85 memset(mutex, 0, sizeof(_GLFWmutex));
86}
87
88void _glfwPlatformLockMutex(_GLFWmutex* mutex)
89{
90 assert(mutex->win32.allocated == GLFW_TRUE);
91 EnterCriticalSection(&mutex->win32.section);
92}
93
94void _glfwPlatformUnlockMutex(_GLFWmutex* mutex)
95{
96 assert(mutex->win32.allocated == GLFW_TRUE);
97 LeaveCriticalSection(&mutex->win32.section);
98}
99