Initial checkin of gRPC to third_party/

third_party/grpc/src/core/iomgr/pollset_windows.h

Index: third_party/grpc/src/core/iomgr/pollset_windows.h
diff --git a/third_party/WebKit/Source/platform/graphics/gpu/AcceleratedImageBufferSurface.h b/third_party/grpc/src/core/iomgr/pollset_windows.h
similarity index 55%
copy from third_party/WebKit/Source/platform/graphics/gpu/AcceleratedImageBufferSurface.h
copy to third_party/grpc/src/core/iomgr/pollset_windows.h
index 5fd2e07577a50ee220db120d1359c060213e49f4..dc0b7a4104bd8ada3c4d0301044465d1e3e204fc 100644
--- a/third_party/WebKit/Source/platform/graphics/gpu/AcceleratedImageBufferSurface.h
+++ b/third_party/grpc/src/core/iomgr/pollset_windows.h
@@ -1,5 +1,7 @@
 /*
- * Copyright (c) 2013, Google Inc. All rights reserved.
+ *
+ * Copyright 2015-2016, Google Inc.
+ * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
@@ -26,36 +28,48 @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
  */
 
-#ifndef AcceleratedImageBufferSurface_h
-#define AcceleratedImageBufferSurface_h
+#ifndef GRPC_INTERNAL_CORE_IOMGR_POLLSET_WINDOWS_H
+#define GRPC_INTERNAL_CORE_IOMGR_POLLSET_WINDOWS_H
 
-#include "platform/graphics/ImageBufferSurface.h"
-#include "public/platform/WebGraphicsContext3DProvider.h"
-#include "third_party/skia/include/core/SkSurface.h"
-#include "wtf/OwnPtr.h"
+#include <grpc/support/sync.h>
 
-namespace blink {
+#include "src/core/iomgr/socket_windows.h"
 
-class PLATFORM_EXPORT AcceleratedImageBufferSurface : public ImageBufferSurface {
-    WTF_MAKE_NONCOPYABLE(AcceleratedImageBufferSurface); USING_FAST_MALLOC(AcceleratedImageBufferSurface);
-public:
-    AcceleratedImageBufferSurface(const IntSize&, OpacityMode = NonOpaque);
-    ~AcceleratedImageBufferSurface() override { }
+/* There isn't really any such thing as a pollset under Windows, due to the
+   nature of the IO completion ports. A Windows "pollset" is merely a mutex
+   used to synchronize with the IOCP, and workers are condition variables
+   used to block threads until work is ready. */
 
-    SkCanvas* canvas() override { return m_surface ? m_surface->getCanvas() : nullptr; }
-    bool isValid() const override { return m_surface; }
-    bool isAccelerated() const override { return true; }
-    PassRefPtr<SkImage> newImageSnapshot(AccelerationHint, SnapshotReason) override;
-    Platform3DObject getBackingTextureHandleForOverwrite() override;
+typedef enum {
+  GRPC_POLLSET_WORKER_LINK_POLLSET = 0,
+  GRPC_POLLSET_WORKER_LINK_GLOBAL,
+  GRPC_POLLSET_WORKER_LINK_TYPES
+} grpc_pollset_worker_link_type;
 
-private:
-    OwnPtr<WebGraphicsContext3DProvider> m_contextProvider;
-    sk_sp<SkSurface> m_surface; // Uses m_contextProvider.
-};
+typedef struct grpc_pollset_worker_link {
+  struct grpc_pollset_worker *next;
+  struct grpc_pollset_worker *prev;
+} grpc_pollset_worker_link;
 
+struct grpc_pollset;
+typedef struct grpc_pollset grpc_pollset;
 
-} // namespace blink
+typedef struct grpc_pollset_worker {
+  gpr_cv cv;
+  int kicked;
+  struct grpc_pollset *pollset;
+  grpc_pollset_worker_link links[GRPC_POLLSET_WORKER_LINK_TYPES];
+} grpc_pollset_worker;
+
+struct grpc_pollset {
+  int shutting_down;
+  int kicked_without_pollers;
+  int is_iocp_worker;
+  grpc_pollset_worker root_worker;
+  grpc_closure *on_shutdown;
+};
 
-#endif
+#endif /* GRPC_INTERNAL_CORE_IOMGR_POLLSET_WINDOWS_H */