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/* -*- 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 http://mozilla.org/MPL/2.0/. */
ThreadProfile::ThreadProfile(ThreadInfo* aInfo, ProfileBuffer* aBuffer)
: mThreadInfo(aInfo)
, mBuffer(aBuffer)
, mPseudoStack(aInfo->Stack())
, mMutex(OS::CreateMutex("ThreadProfile::mMutex"))
, mThreadId(int(aInfo->ThreadId()))
, mIsMainThread(aInfo->IsMainThread())
, mPlatformData(aInfo->GetPlatformData())
, mStackTop(aInfo->StackTop())
#ifndef SPS_STANDALONE
, mRespInfo(this)
#endif
#ifdef XP_LINUX
, mRssMemory(0)
, mUssMemory(0)
#endif
{
MOZ_COUNT_CTOR(ThreadProfile);
MOZ_ASSERT(aBuffer);
// I don't know if we can assert this. But we should warn.
MOZ_ASSERT(aInfo->ThreadId() >= 0, "native thread ID is < 0");
MOZ_ASSERT(aInfo->ThreadId() <= INT32_MAX, "native thread ID is > INT32_MAX");
}
ThreadProfile::~ThreadProfile()
{
MOZ_COUNT_DTOR(ThreadProfile);
}
void ThreadProfile::addTag(const ProfileEntry& aTag)
{
mBuffer->addTag(aTag);
}
void ThreadProfile::addStoredMarker(ProfilerMarker *aStoredMarker) {
mBuffer->addStoredMarker(aStoredMarker);
}
void ThreadProfile::StreamJSON(SpliceableJSONWriter& aWriter, double aSinceTime)
{
// mUniqueStacks may already be emplaced from FlushSamplesAndMarkers.
if (!mUniqueStacks.isSome()) {
#ifndef SPS_STANDALONE
mUniqueStacks.emplace(mPseudoStack->mContext);
#else
mUniqueStacks.emplace(nullptr);
#endif
}
aWriter.Start(SpliceableJSONWriter::SingleLineStyle);
{
StreamSamplesAndMarkers(aWriter, aSinceTime, *mUniqueStacks);
aWriter.StartObjectProperty("stackTable");
{
{
JSONSchemaWriter schema(aWriter);
schema.WriteField("prefix");
schema.WriteField("frame");
}
aWriter.StartArrayProperty("data");
{
mUniqueStacks->SpliceStackTableElements(aWriter);
}
aWriter.EndArray();
}
aWriter.EndObject();
aWriter.StartObjectProperty("frameTable");
{
{
JSONSchemaWriter schema(aWriter);
schema.WriteField("location");
schema.WriteField("implementation");
schema.WriteField("optimizations");
schema.WriteField("line");
schema.WriteField("category");
}
aWriter.StartArrayProperty("data");
{
mUniqueStacks->SpliceFrameTableElements(aWriter);
}
aWriter.EndArray();
}
aWriter.EndObject();
aWriter.StartArrayProperty("stringTable");
{
mUniqueStacks->mUniqueStrings.SpliceStringTableElements(aWriter);
}
aWriter.EndArray();
}
aWriter.End();
mUniqueStacks.reset();
}
void ThreadProfile::StreamSamplesAndMarkers(SpliceableJSONWriter& aWriter, double aSinceTime,
UniqueStacks& aUniqueStacks)
{
#ifndef SPS_STANDALONE
// Thread meta data
if (XRE_GetProcessType() == GeckoProcessType_Plugin) {
// TODO Add the proper plugin name
aWriter.StringProperty("name", "Plugin");
} else if (XRE_GetProcessType() == GeckoProcessType_Content) {
// This isn't going to really help once we have multiple content
// processes, but it'll do for now.
aWriter.StringProperty("name", "Content");
} else {
aWriter.StringProperty("name", Name());
}
#else
aWriter.StringProperty("name", Name());
#endif
aWriter.IntProperty("tid", static_cast<int>(mThreadId));
aWriter.StartObjectProperty("samples");
{
{
JSONSchemaWriter schema(aWriter);
schema.WriteField("stack");
schema.WriteField("time");
schema.WriteField("responsiveness");
schema.WriteField("rss");
schema.WriteField("uss");
schema.WriteField("frameNumber");
schema.WriteField("power");
}
aWriter.StartArrayProperty("data");
{
if (mSavedStreamedSamples) {
// We would only have saved streamed samples during shutdown
// streaming, which cares about dumping the entire buffer, and thus
// should have passed in 0 for aSinceTime.
MOZ_ASSERT(aSinceTime == 0);
aWriter.Splice(mSavedStreamedSamples.get());
mSavedStreamedSamples.reset();
}
mBuffer->StreamSamplesToJSON(aWriter, mThreadId, aSinceTime,
#ifndef SPS_STANDALONE
mPseudoStack->mContext,
#else
nullptr,
#endif
aUniqueStacks);
}
aWriter.EndArray();
}
aWriter.EndObject();
aWriter.StartObjectProperty("markers");
{
{
JSONSchemaWriter schema(aWriter);
schema.WriteField("name");
schema.WriteField("time");
schema.WriteField("data");
}
aWriter.StartArrayProperty("data");
{
if (mSavedStreamedMarkers) {
MOZ_ASSERT(aSinceTime == 0);
aWriter.Splice(mSavedStreamedMarkers.get());
mSavedStreamedMarkers.reset();
}
mBuffer->StreamMarkersToJSON(aWriter, mThreadId, aSinceTime, aUniqueStacks);
}
aWriter.EndArray();
}
aWriter.EndObject();
}
void ThreadProfile::FlushSamplesAndMarkers()
{
// This function is used to serialize the current buffer just before
// JSContext destruction.
MOZ_ASSERT(mPseudoStack->mContext);
// Unlike StreamJSObject, do not surround the samples in brackets by calling
// aWriter.{Start,End}BareList. The result string will be a comma-separated
// list of JSON object literals that will prepended by StreamJSObject into
// an existing array.
//
// Note that the UniqueStacks instance is persisted so that the frame-index
// mapping is stable across JS shutdown.
#ifndef SPS_STANDALONE
mUniqueStacks.emplace(mPseudoStack->mContext);
#else
mUniqueStacks.emplace(nullptr);
#endif
{
SpliceableChunkedJSONWriter b;
b.StartBareList();
{
mBuffer->StreamSamplesToJSON(b, mThreadId, /* aSinceTime = */ 0,
#ifndef SPS_STANDALONE
mPseudoStack->mContext,
#else
nullptr,
#endif
*mUniqueStacks);
}
b.EndBareList();
mSavedStreamedSamples = b.WriteFunc()->CopyData();
}
{
SpliceableChunkedJSONWriter b;
b.StartBareList();
{
mBuffer->StreamMarkersToJSON(b, mThreadId, /* aSinceTime = */ 0, *mUniqueStacks);
}
b.EndBareList();
mSavedStreamedMarkers = b.WriteFunc()->CopyData();
}
// Reset the buffer. Attempting to symbolicate JS samples after mContext has
// gone away will crash.
mBuffer->reset();
}
PseudoStack* ThreadProfile::GetPseudoStack()
{
return mPseudoStack;
}
void ThreadProfile::BeginUnwind()
{
mMutex->Lock();
}
void ThreadProfile::EndUnwind()
{
mMutex->Unlock();
}
::Mutex& ThreadProfile::GetMutex()
{
return *mMutex.get();
}
void ThreadProfile::DuplicateLastSample()
{
mBuffer->DuplicateLastSample(mThreadId);
}
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