author Jim Blandy <>
Thu, 30 Mar 2023 16:23:26 +0000
changeset 658645 9754c55103ef774188e1e813a3ef5d4f5487b35c
parent 585700 2a8dcc6ebf6842384e158c9fce6d0fedd48882ca
permissions -rw-r--r--
Bug 1825449: Don't warn on mismatched WebGPU error scope push/pop. r=webgpu-reviewers,teoxoy In the graphics process, don't warn on receipt of mismatched DevicePushErrorScope/DevicePopErrorScope messages, since these can be easily caused by ordinary content and do not indicate anything wrong with Firefox. Differential Revision:

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at */

#ifndef VTuneProfiler_h
#define VTuneProfiler_h

// The intent here is to add 0 overhead for regular users. In order to build
// the VTune profiler code at all --enable-vtune-instrumentation needs to be
// set as a build option. Even then, when none of the environment variables
// is specified that allow us to find the ittnotify DLL, these functions
// should be minimal overhead. When starting Firefox under VTune, these
// env vars will be automatically defined, otherwise INTEL_LIBITTNOTIFY32/64
// should be set to point at the ittnotify DLL.

#  define VTUNE_INIT()
#  define VTUNE_SHUTDOWN()

#  define VTUNE_TRACING(name, kind)


#  include "GeckoProfiler.h"

// This is the regular Intel header, these functions are actually defined for
// us inside js/src/vtune by an intel C file which actually dynamically resolves
// them to the correct DLL. Through libxul these will 'magically' resolve.
#  include "vtune/ittnotify.h"

#  include <stddef.h>
#  include <unordered_map>
#  include <string>

class VTuneProfiler {
  static void Initialize();
  static void Shutdown();

  enum TracingKind {

  static void Trace(const char* aName, TracingKind aKind) {
    if (mInstance) {
      mInstance->TraceInternal(aName, aKind);
  static void RegisterThread(const char* aName) {
    if (mInstance) {

  void TraceInternal(const char* aName, TracingKind aKind);
  void RegisterThreadInternal(const char* aName);

  // This is null when the ittnotify DLL could not be found.
  static VTuneProfiler* mInstance;

  std::unordered_map<std::string, __itt_event> mStrings;

#  define VTUNE_INIT() VTuneProfiler::Initialize()
#  define VTUNE_SHUTDOWN() VTuneProfiler::Shutdown()

#  define VTUNE_TRACING(name, kind) VTuneProfiler::Trace(name, kind)
#  define VTUNE_REGISTER_THREAD(name) VTuneProfiler::RegisterThread(name)


#endif /* VTuneProfiler_h */