Import WebKit commit 13ac532967b6ac2d18d6fc4ea72c4ca35eccff20

Change-Id: I12a5c8f98aeaac1b542ce20c0ff297c57b5d84d1
Reviewed-by: Konstantin Tokarev <annulen@yandex.ru>

1 files changed, 75 insertions, 0 deletions

diff --git a/Source/WTF/wtf/threads/win/BinarySemaphoreWin.cpp b/Source/WTF/wtf/threads/win/BinarySemaphoreWin.cpp
new file mode 100644
index 000000000..0dad1ac5c
--- /dev/null
+++ b/Source/WTF/wtf/threads/win/BinarySemaphoreWin.cpp
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2011 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY 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.
+ */
+
+#include "config.h"
+#include "BinarySemaphore.h"
+
+namespace WTF {
+
+BinarySemaphore::BinarySemaphore()
+    : m_event(::CreateEventW(0, FALSE, FALSE, 0))
+{
+}
+
+BinarySemaphore::~BinarySemaphore()
+{
+    ::CloseHandle(m_event);
+}
+
+void BinarySemaphore::signal()
+{
+    ::SetEvent(m_event);
+}
+
+bool BinarySemaphore::wait(double absoluteTime)
+{
+    DWORD interval = absoluteTimeToWaitTimeoutInterval(absoluteTime);
+    if (!interval) {
+        // Consider the wait to have timed out, even if the event has already been signaled, to
+        // match the WTF::ThreadCondition implementation.
+        return false;
+    }
+
+    DWORD result = ::WaitForSingleObject(m_event, interval);
+    switch (result) {
+    case WAIT_OBJECT_0:
+        // The event was signaled.
+        return true;
+
+    case WAIT_TIMEOUT:
+        // The wait timed out.
+        return false;
+
+    case WAIT_FAILED:
+        ASSERT_WITH_MESSAGE(false, "::WaitForSingleObject failed with error %lu", ::GetLastError());
+        return false;
+
+    default:
+        ASSERT_WITH_MESSAGE(false, "::WaitForSingleObject returned unexpected result %lu", result);
+        return false;
+    }
+}
+
+} // namespace WTF