Split TLS implementation into its own translation unit.

src/ports/SkThread_win.cpp

Index: src/ports/SkThread_win.cpp
===================================================================
--- src/ports/SkThread_win.cpp	(revision 10093)
+++ src/ports/SkThread_win.cpp	(working copy)
@@ -1,4 +1,3 @@
-
 /*
  * Copyright 2008 The Android Open Source Project
  *
@@ -6,11 +5,9 @@
  * found in the LICENSE file.
  */
 
-
 #include <windows.h>
 #include <intrin.h>
 #include "SkThread.h"
-#include "SkTLS.h"
 
 //MSDN says in order to declare an interlocked function for use as an
 //intrinsic, include intrin.h and put the function in a #pragma intrinsic
@@ -66,71 +63,3 @@
 void SkMutex::release() {
     LeaveCriticalSection(reinterpret_cast<CRITICAL_SECTION*>(&fStorage));
 }
-
-///////////////////////////////////////////////////////////////////////////
-
-static bool gOnce;
-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
-}