From 5dcd286d3e3e60f6a090f775a1fdceb40f578b75 Mon Sep 17 00:00:00 2001
From: Chris Craik <ccraik@google.com>
Date: Wed, 13 Jul 2011 12:58:41 -0700
Subject: Tile profiling backend

Added tile profiling member (TilesProfiler) to TilesManager to track rendering status of tiles.

Change-Id: Ied828c6ad2a15588965e6641edecb162bd76bc62
---
 .../platform/graphics/android/TilesProfiler.cpp    | 119 +++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 Source/WebCore/platform/graphics/android/TilesProfiler.cpp

(limited to 'Source/WebCore/platform/graphics/android/TilesProfiler.cpp')

diff --git a/Source/WebCore/platform/graphics/android/TilesProfiler.cpp b/Source/WebCore/platform/graphics/android/TilesProfiler.cpp
new file mode 100644
index 0000000..5c6aaa0
--- /dev/null
+++ b/Source/WebCore/platform/graphics/android/TilesProfiler.cpp
@@ -0,0 +1,119 @@
+/*
+ * Copyright 2010, The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * 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 THE COPYRIGHT HOLDERS ``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 THE COPYRIGHT OWNER OR
+ * 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 "TilesProfiler.h"
+
+#if USE(ACCELERATED_COMPOSITING)
+
+#include <wtf/CurrentTime.h>
+
+#ifdef DEBUG
+
+#include <cutils/log.h>
+#include <wtf/text/CString.h>
+
+#undef XLOG
+#define XLOG(...) android_printLog(ANDROID_LOG_DEBUG, "TilesProfiler", __VA_ARGS__)
+
+#else
+
+#undef XLOG
+#define XLOG(...)
+
+#endif // DEBUG
+
+// Hard limit on amount of frames (and thus memory) profiling can take
+#define MAX_PROF_FRAMES 400
+
+namespace WebCore {
+TilesProfiler::TilesProfiler()
+    : m_enabled(false)
+{
+}
+
+void TilesProfiler::start()
+{
+    m_enabled = true;
+    m_goodTiles = 0;
+    m_badTiles = 0;
+    m_records.clear();
+    m_time = currentTimeMS();
+    XLOG("initializing tileprofiling");
+}
+
+float TilesProfiler::stop()
+{
+    m_enabled = false;
+    XLOG("completed tile profiling, observed %d frames", m_records.size());
+    return (1.0 * m_goodTiles) / (m_goodTiles + m_badTiles);
+}
+
+void TilesProfiler::clear()
+{
+    XLOG("clearing tile profiling of its %d frames", m_records.size());
+    m_records.clear();
+}
+
+void TilesProfiler::nextFrame(int l, int t, int r, int b)
+{
+    if (!m_enabled || (m_records.size() > MAX_PROF_FRAMES))
+        return;
+
+    double currentTime = currentTimeMS();
+    double timeDelta = currentTime - m_time;
+    m_time = currentTime;
+
+#ifdef DEBUG
+    if (m_records.size() != 0) {
+        XLOG("completed tile profiling frame, observed %d tiles. %f ms since last",
+             m_records[0].size(), timeDelta);
+    }
+#endif // DEBUG
+
+    m_records.append(WTF::Vector<TileProfileRecord>());
+
+    //first two records designate viewport
+    m_records.last().append(TileProfileRecord(l, t, true, (int)(timeDelta * 1000)));
+    m_records.last().append(TileProfileRecord(r, b, true, -1));
+
+}
+
+void TilesProfiler::nextTile(int x, int y, bool isReady, int level, bool inView)
+{
+    if (!m_enabled || (m_records.size() > MAX_PROF_FRAMES))
+        return;
+    if (inView) {
+        if (isReady)
+            m_goodTiles++;
+        else
+            m_badTiles++;
+    }
+    m_records.last().append(TileProfileRecord(x, y, isReady, level));
+}
+
+} // namespace WebCore
+
+#endif // USE(ACCELERATED_COMPOSITING)
-- 
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