Beispiel #1
0
// Read env vars at startup, so as to set:
//   sUnwindInterval, sProfileEntries, sUnwindStackScan.
void read_profiler_env_vars()
{
  /* Set defaults */
  sUnwindInterval = 0;  /* We'll have to look elsewhere */
  sProfileEntries = 0;

  const char* interval = getenv(PROFILER_INTERVAL);
  const char* entries = getenv(PROFILER_ENTRIES);
  const char* scanCount = getenv(PROFILER_STACK);

  if (getenv(PROFILER_HELP)) {
     // Enable verbose output
     moz_profiler_set_verbosity(ProfilerVerbosity::VERBOSE);
     profiler_usage();
     // Now force the next enquiry of moz_profiler_verbose to re-query
     // env var MOZ_PROFILER_VERBOSE.
     moz_profiler_set_verbosity(ProfilerVerbosity::UNCHECKED);
  }

  if (!set_profiler_interval(interval) ||
      !set_profiler_entries(entries) ||
      !set_profiler_scan(scanCount)) {
      profiler_usage();
  } else {
    LOG( "SPS:");
    LOGF("SPS: Sampling interval = %d ms (zero means \"platform default\")",
        (int)sUnwindInterval);
    LOGF("SPS: Entry store size  = %d (zero means \"platform default\")",
        (int)sProfileEntries);
    LOGF("SPS: UnwindStackScan   = %d (max dubious frames per unwind).",
        (int)sUnwindStackScan);
    LOG( "SPS:");
  }
}
Beispiel #2
0
// Read env vars at startup, so as to set sUnwindMode and sInterval.
void read_profiler_env_vars()
{
  bool nativeAvail = is_native_unwinding_avail();

  /* Set defaults */
  sUnwindMode     = nativeAvail ? UnwCOMBINED : UnwPSEUDO;
  sUnwindInterval = 0;  /* We'll have to look elsewhere */
  sProfileEntries = 0;

  const char* stackMode = PR_GetEnv(PROFILER_MODE);
  const char* interval = PR_GetEnv(PROFILER_INTERVAL);
  const char* entries = PR_GetEnv(PROFILER_ENTRIES);
  const char* scanCount = PR_GetEnv(PROFILER_STACK);

  if (!set_profiler_mode(stackMode) ||
      !set_profiler_interval(interval) ||
      !set_profiler_entries(entries) ||
      !set_profiler_scan(scanCount)) {
      profiler_usage();
  } else {
    LOG( "SPS:");
    LOGF("SPS: Unwind mode       = %s", name_UnwMode(sUnwindMode));
    LOGF("SPS: Sampling interval = %d ms (zero means \"platform default\")",
        (int)sUnwindInterval);
    LOGF("SPS: Entry store size  = %d (zero means \"platform default\")",
        (int)sProfileEntries);
    LOGF("SPS: UnwindStackScan   = %d (max dubious frames per unwind).",
        (int)sUnwindStackScan);
    LOG( "SPS: Use env var MOZ_PROFILER_MODE=help for further information.");
    LOG( "SPS:");
  }
}