1 files changed, 92 insertions, 0 deletions
diff --git a/Source/WTF/wtf/RunLoopTimerCF.cpp b/Source/WTF/wtf/RunLoopTimerCF.cpp
new file mode 100644
index 000000000..ea65cbb53
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+++ b/Source/WTF/wtf/RunLoopTimerCF.cpp
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2009, 2013 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.
+ * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE 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 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"
+
+#if PLATFORM(COCOA) && HAVE(RUNLOOP_TIMER)
+
+#include "RunLoopTimer.h"
+
+#include "AutodrainedPool.h"
+
+namespace WTF {
+
+RunLoopTimerBase::~RunLoopTimerBase()
+{
+    stop();
+}
+
+static void timerFired(CFRunLoopTimerRef, void* context)
+{
+    // CFRunLoopTimer does not create an NSAutoreleasePool, like NSTimer does. This can lead to
+    // autoreleased objects being pushed into NSAutoreleasePools underneath the run loop, which
+    // are very infrequently drained. Create a new autorelease pool here to give autoreleased objects
+    // a place to collect.
+    AutodrainedPool pool;
+    RunLoopTimerBase* timer = static_cast<RunLoopTimerBase*>(context);
+    timer->fired();
+}
+
+void RunLoopTimerBase::start(double nextFireInterval, double repeatInterval)
+{
+    if (m_timer)
+        CFRunLoopTimerInvalidate(m_timer.get());
+    CFRunLoopTimerContext context = { 0, this, 0, 0, 0 };
+    m_timer = adoptCF(CFRunLoopTimerCreate(0, CFAbsoluteTimeGetCurrent() + nextFireInterval, repeatInterval, 0, 0, timerFired, &context));
+}
+
+void RunLoopTimerBase::schedule(const SchedulePair* schedulePair)
+{
+    ASSERT_ARG(schedulePair, schedulePair);
+    ASSERT_WITH_MESSAGE(m_timer, "Timer must have one of the start functions called before calling schedule().");
+    CFRunLoopAddTimer(schedulePair->runLoop(), m_timer.get(), schedulePair->mode());
+}
+
+void RunLoopTimerBase::schedule(const SchedulePairHashSet& schedulePairs)
+{
+    SchedulePairHashSet::const_iterator end = schedulePairs.end();
+    for (SchedulePairHashSet::const_iterator it = schedulePairs.begin(); it != end; ++it)
+        schedule((*it).get());
+}
+
+void RunLoopTimerBase::stop()
+{
+    if (!m_timer)
+        return;
+    CFRunLoopTimerInvalidate(m_timer.get());
+    m_timer = 0;
+}
+
+bool RunLoopTimerBase::isActive() const
+{
+    return m_timer && CFRunLoopTimerIsValid(m_timer.get());
+}
+
+} // namespace WTF
+
+#endif // PLATFORM(COCOA) && HAVE(RUNLOOP_TIMER)