1 files changed, 64 insertions, 0 deletions
diff --git a/skia/ports/SkThread_win.cpp b/skia/ports/SkThread_win.cpp
new file mode 100644
index 0000000..791e4f4
--- /dev/null
+++ b/skia/ports/SkThread_win.cpp
@@ -0,0 +1,64 @@
+/* libs/graphics/ports/SkThread_none.cpp
+**
+** Copyright 2008, Google Inc.
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+#include <windows.h>
+#include "SkThread.h"
+
+namespace {
+
+template <bool>
+struct CompileAssert {
+};
+
+}  // namespace
+
+#define COMPILE_ASSERT(expr, msg) \
+  typedef CompileAssert<(bool(expr))> msg[bool(expr) ? 1 : -1]
+
+int32_t sk_atomic_inc(int32_t* addr)
+{
+    // InterlockedIncrement returns the new value, we want to return the old.
+    return InterlockedIncrement(reinterpret_cast<LONG*>(addr)) - 1;
+}
+
+int32_t sk_atomic_dec(int32_t* addr)
+{
+    return InterlockedDecrement(reinterpret_cast<LONG*>(addr)) + 1;
+}
+
+SkMutex::SkMutex(bool /* isGlobal */)
+{
+    COMPILE_ASSERT(sizeof(fStorage) > sizeof(CRITICAL_SECTION),
+                   NotEnoughSizeForCriticalSection);
+    InitializeCriticalSection(reinterpret_cast<CRITICAL_SECTION*>(&fStorage));
+}
+
+SkMutex::~SkMutex()
+{
+    DeleteCriticalSection(reinterpret_cast<CRITICAL_SECTION*>(&fStorage));
+}
+
+void SkMutex::acquire()
+{
+    EnterCriticalSection(reinterpret_cast<CRITICAL_SECTION*>(&fStorage));
+}
+
+void SkMutex::release()
+{
+    LeaveCriticalSection(reinterpret_cast<CRITICAL_SECTION*>(&fStorage));
+}
+