1 files changed, 78 insertions, 0 deletions
diff --git a/Source/WebKit2/UIProcess/HighPerformanceGraphicsUsageSampler.cpp b/Source/WebKit2/UIProcess/HighPerformanceGraphicsUsageSampler.cpp
new file mode 100644
index 000000000..859895077
--- /dev/null
+++ b/Source/WebKit2/UIProcess/HighPerformanceGraphicsUsageSampler.cpp
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2016 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 "HighPerformanceGraphicsUsageSampler.h"
+
+#include "WebProcessPool.h"
+#include <WebCore/DiagnosticLoggingKeys.h>
+
+namespace WebKit {
+
+using namespace WebCore;
+
+static const std::chrono::minutes samplingInterval { 10 };
+
+HighPerformanceGraphicsUsageSampler::HighPerformanceGraphicsUsageSampler(WebProcessPool& webProcessPool)
+    : m_webProcessPool(webProcessPool)
+    , m_timer(RunLoop::main(), this, &HighPerformanceGraphicsUsageSampler::timerFired)
+{
+    m_timer.startRepeating(samplingInterval);
+}
+
+void HighPerformanceGraphicsUsageSampler::timerFired()
+{
+    bool isUsingHighPerformanceWebGL = false;
+    bool isUsingHighPerformanceWebGLInVisibleView = false;
+
+    WebPageProxy* firstPage = nullptr;
+    for (auto& webProcess : m_webProcessPool.processes()) {
+        for (auto& page : webProcess->pages()) {
+            if (!firstPage)
+                firstPage = page;
+
+            if (page->isUsingHighPerformanceWebGL()) {
+                isUsingHighPerformanceWebGL = true;
+                if (page->isViewVisible()) {
+                    isUsingHighPerformanceWebGLInVisibleView = true;
+                    break;
+                }
+            }
+        }
+    }
+
+    if (!firstPage)
+        return;
+
+    String state = DiagnosticLoggingKeys::inactiveKey();
+    if (isUsingHighPerformanceWebGLInVisibleView)
+        state = DiagnosticLoggingKeys::activeInForegroundTabKey();
+    else if (isUsingHighPerformanceWebGL)
+        state = DiagnosticLoggingKeys::activeInBackgroundTabOnlyKey();
+
+    firstPage->logDiagnosticMessage(DiagnosticLoggingKeys::webGLStateKey(), state, ShouldSample::No);
+}
+
+} // namespace WebKit