Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

3 files changed, 205 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/wtf/threads/BinarySemaphore.cpp b/Source/JavaScriptCore/wtf/threads/BinarySemaphore.cpp
new file mode 100644
index 000000000..5f60aaf22
--- /dev/null
+++ b/Source/JavaScriptCore/wtf/threads/BinarySemaphore.cpp
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2010 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"
+
+#if !PLATFORM(WIN)
+
+namespace WTF {
+
+BinarySemaphore::BinarySemaphore()
+    : m_isSet(false)
+{
+}
+    
+BinarySemaphore::~BinarySemaphore()
+{
+}
+
+void BinarySemaphore::signal()
+{
+    MutexLocker locker(m_mutex);
+
+    m_isSet = true;
+    m_condition.signal();
+}
+
+bool BinarySemaphore::wait(double absoluteTime)
+{
+    MutexLocker locker(m_mutex);
+
+    bool timedOut = false;
+    while (!m_isSet) {
+        timedOut = !m_condition.timedWait(m_mutex, absoluteTime);
+        if (timedOut)
+            return false;
+    }
+
+    // Reset the semaphore.
+    m_isSet = false;
+    return true;
+}
+
+} // namespace WTF
+
+#endif // !PLATFORM(WIN)
diff --git a/Source/JavaScriptCore/wtf/threads/BinarySemaphore.h b/Source/JavaScriptCore/wtf/threads/BinarySemaphore.h
new file mode 100644
index 000000000..8e82207e9
--- /dev/null
+++ b/Source/JavaScriptCore/wtf/threads/BinarySemaphore.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2010, 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.
+ */
+
+#ifndef BinarySemaphore_h
+#define BinarySemaphore_h
+
+#include <wtf/Noncopyable.h>
+#include <wtf/ThreadingPrimitives.h>
+
+namespace WTF {
+
+class BinarySemaphore {
+    WTF_MAKE_NONCOPYABLE(BinarySemaphore);
+
+public:
+    BinarySemaphore();
+    ~BinarySemaphore();
+
+    void signal();
+    bool wait(double absoluteTime);
+
+#if PLATFORM(WIN)
+    HANDLE event() const { return m_event; }
+#endif
+
+private:
+#if PLATFORM(WIN)
+    HANDLE m_event;
+#else
+    bool m_isSet;
+
+    Mutex m_mutex;
+    ThreadCondition m_condition;
+#endif
+};
+
+} // namespace WTF
+
+using WTF::BinarySemaphore;
+
+#endif // BinarySemaphore_h
diff --git a/Source/JavaScriptCore/wtf/threads/win/BinarySemaphoreWin.cpp b/Source/JavaScriptCore/wtf/threads/win/BinarySemaphoreWin.cpp
new file mode 100644
index 000000000..adc9e9b90
--- /dev/null
+++ b/Source/JavaScriptCore/wtf/threads/win/BinarySemaphoreWin.cpp
@@ -0,0 +1,74 @@
+/*
+ * 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 = ::WaitForSingleObjectEx(m_event, interval, FALSE);
+    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, "::WaitForSingleObjectEx failed with error %lu", ::GetLastError());
+        return false;
+    default:
+        ASSERT_WITH_MESSAGE(false, "::WaitForSingleObjectEx returned unexpected result %lu", result);
+        return false;
+    }
+}
+
+} // namespace WTF