The Tor Browser / file comparison
comparison: gfx/skia/trunk/src/ports/SkTLS_win.cpp
gfx/skia/trunk/src/ports/SkTLS_win.cpp
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:1fb2bf9731e0 |
|---|---|
| 1 /* | |
| 2 * Copyright 2013 Google Inc. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 #include "SkTLS.h" | |
| 9 #include "SkThread.h" | |
| 10 | |
| 11 static bool gOnce = false; | |
| 12 static DWORD gTlsIndex; | |
| 13 SK_DECLARE_STATIC_MUTEX(gMutex); | |
| 14 | |
| 15 void* SkTLS::PlatformGetSpecific(bool forceCreateTheSlot) { | |
| 16 if (!forceCreateTheSlot && !gOnce) { | |
| 17 return NULL; | |
| 18 } | |
| 19 | |
| 20 if (!gOnce) { | |
| 21 SkAutoMutexAcquire tmp(gMutex); | |
| 22 if (!gOnce) { | |
| 23 gTlsIndex = TlsAlloc(); | |
| 24 gOnce = true; | |
| 25 } | |
| 26 } | |
| 27 return TlsGetValue(gTlsIndex); | |
| 28 } | |
| 29 | |
| 30 void SkTLS::PlatformSetSpecific(void* ptr) { | |
| 31 SkASSERT(gOnce); | |
| 32 (void)TlsSetValue(gTlsIndex, ptr); | |
| 33 } | |
| 34 | |
| 35 // Call TLS destructors on thread exit. Code based on Chromium's | |
| 36 // base/threading/thread_local_storage_win.cc | |
| 37 #ifdef _WIN64 | |
| 38 | |
| 39 #pragma comment(linker, "/INCLUDE:_tls_used") | |
| 40 #pragma comment(linker, "/INCLUDE:skia_tls_callback") | |
| 41 | |
| 42 #else | |
| 43 | |
| 44 #pragma comment(linker, "/INCLUDE:__tls_used") | |
| 45 #pragma comment(linker, "/INCLUDE:_skia_tls_callback") | |
| 46 | |
| 47 #endif | |
| 48 | |
| 49 void NTAPI onTLSCallback(PVOID unused, DWORD reason, PVOID unused2) { | |
| 50 if ((DLL_THREAD_DETACH == reason || DLL_PROCESS_DETACH == reason) && gOnce) { | |
| 51 void* ptr = TlsGetValue(gTlsIndex); | |
| 52 if (ptr != NULL) { | |
| 53 SkTLS::Destructor(ptr); | |
| 54 TlsSetValue(gTlsIndex, NULL); | |
| 55 } | |
| 56 } | |
| 57 } | |
| 58 | |
| 59 extern "C" { | |
| 60 | |
| 61 #ifdef _WIN64 | |
| 62 | |
| 63 #pragma const_seg(".CRT$XLB") | |
| 64 extern const PIMAGE_TLS_CALLBACK skia_tls_callback; | |
| 65 const PIMAGE_TLS_CALLBACK skia_tls_callback = onTLSCallback; | |
| 66 #pragma const_seg() | |
| 67 | |
| 68 #else | |
| 69 | |
| 70 #pragma data_seg(".CRT$XLB") | |
| 71 PIMAGE_TLS_CALLBACK skia_tls_callback = onTLSCallback; | |
| 72 #pragma data_seg() | |
| 73 | |
| 74 #endif | |
| 75 } |
