Index: src/ports/SkTLS_win.cpp |
=================================================================== |
--- src/ports/SkTLS_win.cpp (revision 0) |
+++ src/ports/SkTLS_win.cpp (working copy) |
@@ -0,0 +1,75 @@ |
+/* |
+ * Copyright 2013 Google Inc. |
+ * |
+ * Use of this source code is governed by a BSD-style license that can be |
+ * found in the LICENSE file. |
+ */ |
+ |
+#include "SkTLS.h" |
+#include "SkThread.h" |
+ |
+static bool gOnce = false; |
+static DWORD gTlsIndex; |
+SK_DECLARE_STATIC_MUTEX(gMutex); |
+ |
+void* SkTLS::PlatformGetSpecific(bool forceCreateTheSlot) { |
+ if (!forceCreateTheSlot && !gOnce) { |
+ return NULL; |
+ } |
+ |
+ if (!gOnce) { |
+ SkAutoMutexAcquire tmp(gMutex); |
+ if (!gOnce) { |
+ gTlsIndex = TlsAlloc(); |
+ gOnce = true; |
+ } |
+ } |
+ return TlsGetValue(gTlsIndex); |
+} |
+ |
+void SkTLS::PlatformSetSpecific(void* ptr) { |
+ SkASSERT(gOnce); |
+ (void)TlsSetValue(gTlsIndex, ptr); |
+} |
+ |
+// Call TLS destructors on thread exit. Code based on Chromium's |
+// base/threading/thread_local_storage_win.cc |
+#ifdef _WIN64 |
+ |
+#pragma comment(linker, "/INCLUDE:_tls_used") |
+#pragma comment(linker, "/INCLUDE:skia_tls_callback") |
+ |
+#else |
+ |
+#pragma comment(linker, "/INCLUDE:__tls_used") |
+#pragma comment(linker, "/INCLUDE:_skia_tls_callback") |
+ |
+#endif |
+ |
+void NTAPI onTLSCallback(PVOID unused, DWORD reason, PVOID unused2) { |
+ if ((DLL_THREAD_DETACH == reason || DLL_PROCESS_DETACH == reason) && gOnce) { |
+ void* ptr = TlsGetValue(gTlsIndex); |
+ if (ptr != NULL) { |
+ SkTLS::Destructor(ptr); |
+ TlsSetValue(gTlsIndex, NULL); |
+ } |
+ } |
+} |
+ |
+extern "C" { |
+ |
+#ifdef _WIN64 |
+ |
+#pragma const_seg(".CRT$XLB") |
+extern const PIMAGE_TLS_CALLBACK skia_tls_callback; |
+const PIMAGE_TLS_CALLBACK skia_tls_callback = onTLSCallback; |
+#pragma const_seg() |
+ |
+#else |
+ |
+#pragma data_seg(".CRT$XLB") |
+PIMAGE_TLS_CALLBACK skia_tls_callback = onTLSCallback; |
+#pragma data_seg() |
+ |
+#endif |
+} |