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      1 /*
      2  * Copyright 2010, The Android Open Source Project
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *  * Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  *  * Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #if USE(V8)
     27 
     28 #ifdef ANDROID_INSTRUMENT
     29 
     30 #define LOG_TAG "WebCore"
     31 
     32 #include "config.h"
     33 #include "V8Counters.h"
     34 #include "NotImplemented.h"
     35 
     36 #include <CString.h>
     37 #include <StringHash.h>
     38 #include <utils/Log.h>
     39 
     40 namespace WebCore {
     41 
     42 V8Counters::Counter::Counter(bool isHistogram)
     43     : m_count(0), m_sampleTotal(0), m_isHistogram(isHistogram) { }
     44 
     45 void V8Counters::Counter::addSample(int sample)
     46 {
     47   m_count++;
     48   m_sampleTotal += sample;
     49 }
     50 
     51 HashMap<String, V8Counters::Counter*> V8Counters::m_counters;
     52 
     53 // static
     54 int* V8Counters::counterForName(const char* name)
     55 {
     56     Counter* counter = m_counters.get(name);
     57     if (!counter) {
     58         counter = new Counter(false);
     59         m_counters.add(name, counter);
     60     }
     61     return *counter;
     62 }
     63 
     64 // static
     65 void* V8Counters::createHistogram(const char* name, int min, int max,
     66         size_t buckets)
     67 {
     68     Counter* counter = new Counter(true);
     69     m_counters.add(name, counter);
     70     return counter;
     71 }
     72 
     73 // static
     74 void V8Counters::addHistogramSample(void* histogram, int sample)
     75 {
     76     Counter* counter = reinterpret_cast<Counter*>(histogram);
     77     counter->addSample(sample);
     78 }
     79 
     80 // static
     81 void V8Counters::initCounters()
     82 {
     83     static bool isInitialized = false;
     84     if (!isInitialized) {
     85         v8::V8::SetCounterFunction(counterForName);
     86         v8::V8::SetCreateHistogramFunction(createHistogram);
     87         v8::V8::SetAddHistogramSampleFunction(addHistogramSample);
     88         isInitialized = true;
     89     }
     90 }
     91 
     92 // static
     93 void V8Counters::dumpCounters()
     94 {
     95     LOGD("+----------------------------------------+-------------+\n");
     96     LOGD("| Name                                   | Value       |\n");
     97     LOGD("+----------------------------------------+-------------+\n");
     98     typedef HashMap<String, V8Counters::Counter*>::iterator CounterIterator;
     99     for (CounterIterator iter = m_counters.begin(); iter != m_counters.end(); ++iter) {
    100         Counter* counter = iter->second;
    101         if (counter->isHistogram()) {
    102             LOGD("| c:%-36s | %11i |\n", iter->first.latin1().data(), counter->count());
    103             LOGD("| t:%-36s | %11i |\n", iter->first.latin1().data(), counter->sampleTotal());
    104           } else {
    105             LOGD("| %-38s | %11i |\n", iter->first.latin1().data(), counter->count());
    106           }
    107     }
    108     LOGD("+----------------------------------------+-------------+\n");
    109 }
    110 
    111 }
    112 
    113 #endif // ANDROID_INSTRUMENT
    114 
    115 #endif // USE(V8)
    116