Method Tick

renderdoc/android/android_utils.cpp:703–765

}

void LogcatThread::Tick()
{
  // adb is extremely unreliable, so although it supposedly contains functionality to filter for
  // everything after a certain timestamp, this can actually drop messages. Instead we just always
  // grab the last 750 lines and hope that the device doesn't ever peak over 1 line per millisecond
  // such that we'd miss something. Note another joy of adb - the line count is applied *before*
  // the filter, so if something else spams 1000 lines we won't see our own.
  const uint32_t lineBacklog = 750;

  // logcat
  //    -t N         // always the last N messages, and (implied -d) stop after doing so
  //    -v brief     // print the 'brief' format
  //    -s           // silence everything as a default
  //    renderdoc:*  // print logcats from our tag.
  //    libc:*       // or from libc (prints crash messages)
  //    DEBUG:*      // or from DEBUG (prints crash messages)
  //
  // This gives us all messages from renderdoc since the last timestamp.
  rdcstr command =
      StringFormat::Fmt("logcat -t %u -v brief -s renderdoc:* libc:* DEBUG:*", lineBacklog);

  rdcstr logcat = Android::adbExecCommand(deviceID, command, ".", true).strStdout.trimmed();

  rdcarray<rdcstr> lines;
  split(logcat, lines, '\n');

  // remove \n from any lines right now to prevent it breaking further processing
  for(rdcstr &line : lines)
    if(!line.empty() && line.back() == '\r')
      line.pop_back();

  // only do any processing if we had a line last time that we know to start from.
  if(!lastLogcatLine.empty())
  {
    int idx = lines.indexOf(lastLogcatLine);

    if(idx >= 0)
    {
      // remove everything up to and including that line
      lines.erase(0, idx + 1);
    }
    else
    {
      RDCWARN("Couldn't find last line. Potentially missed logcat messages.");
    }

    for(const rdcstr &line : lines)
    {
      LogLine logline;

      if(logline.parse(line))
      {
        rdclog_direct(logline.timestamp, logline.pid, logline.logtype, "ADRD",
                      logline.filename.c_str(), logline.line_number, "%s", logline.message.c_str());
        rdclog_flush();
      }
    }
  }