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Commit 697a8a54 authored by Sanna Catherine de Treville Wager's avatar Sanna Catherine de Treville Wager
Browse files

Prints sample Ms deltas to audioserver file. 

erases previous content for each histogram set.

Test: more /data/misc/audioserver/sample_results.txt

Change-Id: I55847f3e61af76992a73084fe2b5c87c88fc504c
parent ea589f5a

media/libnbaio/NBLog.cpp

+35 −5
Original line number Diff line number Diff line
@@ -84,10 +84,15 @@ 
#define LOG_TAG "NBLog"

//#define LOG_NDEBUG 0



#include <algorithm>

#include <climits>

#include <deque>

#include <fstream>

// #include <inttypes.h>

#include <iostream>

#include <math.h>

#include <numeric>

#include <vector>

#include <stdarg.h>

#include <stdint.h>

#include <stdio.h>
@@ -906,6 +911,34 @@ std::unique_ptr<NBLog::Reader::Snapshot> NBLog::Reader::getSnapshot() 


}



// writes sample deltas to file, either truncating or appending

inline void writeHistToFile(const std::vector<int64_t> &samples, bool append) {

    // name of file on audioserver

    static const char* const kName = (char *)"/data/misc/audioserver/sample_results.txt";

    // stores deltas between the samples

    std::vector<int64_t> intervals;

    if (samples.size() == 0) return;

    for (size_t i = 1; i < samples.size(); ++i) {

        intervals.push_back(deltaMs(samples[i - 1], samples[i]));

    }

    // Deletes maximum value in a histogram. Temp quick fix.

    // FIXME: need to find root cause of approx. 35th element from the end

    // consistently being an outlier in the first histogram of a flush

    // ALOGW("%" PRId64 "before", (int64_t) *(std::max_element(intervals.begin(), intervals.end())));

    intervals.erase(std::max_element(intervals.begin(), intervals.end()));

    // ALOGW("%" PRId64 "after", (int64_t) *(std::max_element(intervals.begin(), intervals.end())));

    std::ofstream ofs;

    ofs.open(kName, append ? std::ios::app : std::ios::trunc);

    if (!ofs) {

        ALOGW("couldn't open file %s", kName);

        return;

    }

    for (size_t i = 0; i < intervals.size(); ++i) {

        ofs << intervals[i] << "\n";

    }

    ofs.close();

}



void NBLog::Reader::dump(int fd, size_t indent, NBLog::Reader::Snapshot &snapshot)

{

  //  CallStack cs(LOG_TAG);
@@ -1056,7 +1089,8 @@ void NBLog::Reader::dump(int fd, size_t indent, NBLog::Reader::Snapshot &snapsho 
                    if (findGlitch) {

                        alertIfGlitch(hist->second);

                    }

                    // validateFirstTimestamp(hist->second);

                    // set file to empty and write data for all histograms in this set

                    writeHistToFile(hist->second, hist != mHists.begin());

                    drawHistogram(&body, hist->second, true, indent);

                    hist = mHists.erase(hist);

                } else {
@@ -1079,12 +1113,8 @@ void NBLog::Reader::dump(int fd, size_t indent, NBLog::Reader::Snapshot &snapsho 


        if (!body.isEmpty()) {

            dumpLine(timestamp, body);

            // deferredTimestamp = false;

        }

    }

    // if (deferredTimestamp) {

    //     dumpLine(timestamp, body);

    // }

}



void NBLog::Reader::dump(int fd, size_t indent)