tools/profiler/nsProfiler.cpp
author Mike Hommey <mh+mozilla@glandium.org>
Wed, 28 Dec 2011 08:24:02 +0100
changeset 84086 cf890c9c3e4c1514e3f6583d6fde256cd59be738
parent 82899 dd24fab5fc633f076043a1d03736b78287f06f31
child 84358 2c1f1e307171886bf7b93074ef4dfaaf9aedbf09
permissions -rw-r--r--
Bug 701371 - Rename mozutils to mozglue, and move it to top-level. r=khuey,a=brendan

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
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 *
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 * for the specific language governing rights and limitations under the
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 * Contributor(s):
 *   Benoit Girard <bgirard@mozilla.com>
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#include <string>
#ifdef MOZ_INSTRUMENT_EVENT_LOOP
#include "EventTracer.h"
#endif
#include "sampler.h"
#include "nsProfiler.h"
#include "nsMemory.h"

using std::string;

NS_IMPL_ISUPPORTS1(nsProfiler, nsIProfiler)


nsProfiler::nsProfiler()
{
}


NS_IMETHODIMP
nsProfiler::StartProfiler(PRUint32 aInterval, PRUint32 aEntries)
{
  SAMPLER_START(aInterval, aEntries);
#ifdef MOZ_INSTRUMENT_EVENT_LOOP
  mozilla::InitEventTracing();
#endif
  return NS_OK;
}

NS_IMETHODIMP
nsProfiler::StopProfiler()
{
  SAMPLER_STOP();
  return NS_OK;
}

NS_IMETHODIMP
nsProfiler::GetProfile(char **aProfile)
{
  char *profile = SAMPLER_GET_PROFILE();
  if (profile) {
    PRUint32 len = strlen(profile);
    char *profileStr = static_cast<char *>
                         (nsMemory::Clone(profile, (len + 1) * sizeof(char)));
    profileStr[len] = '\0';
    *aProfile = profileStr;
    free(profile);
  }
  return NS_OK;
}

NS_IMETHODIMP
nsProfiler::IsActive(bool *aIsActive)
{
  *aIsActive = SAMPLER_IS_ACTIVE();
  return NS_OK;
}

NS_IMETHODIMP
nsProfiler::GetResponsivenessTimes(PRUint32 *aCount, float **aResult)
{
  unsigned int len = 100;
  const float* times = SAMPLER_GET_RESPONSIVENESS();
  if (!times) {
    *aCount = 0;
    *aResult = nsnull;
    return NS_OK;
  }

  float *fs = static_cast<float *>
                       (nsMemory::Clone(times, len * sizeof(float)));

  *aCount = len;
  *aResult = fs;

  return NS_OK;
}