/*
 * Copyright 2009, 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.
 */

#ifndef TimeCounter_h
#define TimeCounter_h

#include "hardware_legacy/qemu_tracing.h"

namespace WebCore {

class KURL;

}

namespace android {

uint32_t getThreadMsec();

#ifdef ANDROID_INSTRUMENT

class TimeCounter {
public:
    enum Type {
        // function base counters
        CSSParseTimeCounter,
        JavaScriptTimeCounter,
        JavaScriptInitTimeCounter,
        JavaScriptParseTimeCounter,
        JavaScriptExecuteTimeCounter,
        CalculateStyleTimeCounter,
        JavaCallbackTimeCounter,
        ParsingTimeCounter,
        LayoutTimeCounter,
        // file base counters
        NativeCallbackTimeCounter,  // WebCoreFrameBridge.cpp
        ResourceTimeCounter,        // WebCoreResourceLoader.cpp
        SharedTimerTimeCounter,     // JavaBridge.cpp
        WebViewCoreBuildNavTimeCounter,
        WebViewCoreRecordTimeCounter,
        WebViewCoreTimeCounter,     // WebViewCore.cpp
        WebViewUIDrawTimeCounter,
        TotalTimeCounterCount
    };

    static void record(enum Type type, const char* functionName);
    static void recordNoCounter(enum Type type, const char* functionName);
    static void report(const WebCore::KURL& , int live, int dead, size_t arenaSize);
    static void reportNow();
    static void reset();
    static void start(enum Type type);
private:
    static uint32_t sStartWebCoreThreadTime;
    static uint32_t sEndWebCoreThreadTime;
    static bool sRecordWebCoreTime;
    static uint32_t sTotalTimeUsed[TotalTimeCounterCount];
    static uint32_t sLastTimeUsed[TotalTimeCounterCount];
    static uint32_t sCounter[TotalTimeCounterCount];
    static uint32_t sLastCounter[TotalTimeCounterCount];
    static uint32_t sStartTime[TotalTimeCounterCount];
    friend class TimeCounterAuto;
};

class TimeCounterAuto {
public:
    TimeCounterAuto(TimeCounter::Type type) : 
        m_type(type), m_startTime(getThreadMsec()) {}
    ~TimeCounterAuto() {
        uint32_t time = getThreadMsec();
        TimeCounter::sEndWebCoreThreadTime = time;
        TimeCounter::sTotalTimeUsed[m_type] += time - m_startTime;
        TimeCounter::sCounter[m_type]++;
    }
private:
    TimeCounter::Type m_type;
    uint32_t m_startTime;
};

class QemuTracerAuto {
public:
    QemuTracerAuto() {
        if (!reentry_count)
            qemu_start_tracing();
        reentry_count++;
    }

    ~QemuTracerAuto() {
        reentry_count--;
        if (!reentry_count)
            qemu_stop_tracing();
    }
private:
    static int reentry_count;
};
#endif  // ANDROID_INSTRUMENT

}

#endif