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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/. */
#include "ProfiledThreadData.h"
#include "platform.h"
#include "ProfileBuffer.h"
#include "js/TraceLoggerAPI.h"
#include "mozilla/ProfileJSONWriter.h"
#include "mozilla/Span.h"
#include "nsXULAppAPI.h"
#if defined(GP_OS_darwin)
# include <pthread.h>
#endif
ProfiledThreadData::ProfiledThreadData(ThreadInfo* aThreadInfo,
nsIEventTarget* aEventTarget)
: mThreadInfo(aThreadInfo) {
MOZ_COUNT_CTOR(ProfiledThreadData);
}
ProfiledThreadData::~ProfiledThreadData() {
MOZ_COUNT_DTOR(ProfiledThreadData);
}
void ProfiledThreadData::StreamJSON(
const ProfileBuffer& aBuffer, JSContext* aCx, SpliceableJSONWriter& aWriter,
const nsACString& aProcessName, const nsACString& aETLDplus1,
const mozilla::TimeStamp& aProcessStartTime, double aSinceTime,
bool JSTracerEnabled, ProfilerCodeAddressService* aService) {
if (mJITFrameInfoForPreviousJSContexts &&
mJITFrameInfoForPreviousJSContexts->HasExpired(
aBuffer.BufferRangeStart())) {
mJITFrameInfoForPreviousJSContexts = nullptr;
}
// If we have an existing JITFrameInfo in mJITFrameInfoForPreviousJSContexts,
// copy the data from it.
JITFrameInfo jitFrameInfo =
mJITFrameInfoForPreviousJSContexts
? JITFrameInfo(*mJITFrameInfoForPreviousJSContexts)
: JITFrameInfo();
if (aCx && mBufferPositionWhenReceivedJSContext) {
aBuffer.AddJITInfoForRange(*mBufferPositionWhenReceivedJSContext,
mThreadInfo->ThreadId(), aCx, jitFrameInfo);
}
UniqueStacks uniqueStacks(std::move(jitFrameInfo));
uniqueStacks.mCodeAddressService = aService;
MOZ_ASSERT(uniqueStacks.mUniqueStrings);
aWriter.SetUniqueStrings(*uniqueStacks.mUniqueStrings);
aWriter.Start();
{
StreamSamplesAndMarkers(mThreadInfo->Name(), mThreadInfo->ThreadId(),
aBuffer, aWriter, aProcessName, aETLDplus1,
aProcessStartTime, mThreadInfo->RegisterTime(),
mUnregisterTime, aSinceTime, uniqueStacks);
aWriter.StartObjectProperty("stackTable");
{
{
JSONSchemaWriter schema(aWriter);
schema.WriteField("prefix");
schema.WriteField("frame");
}
aWriter.StartArrayProperty("data");
{ uniqueStacks.SpliceStackTableElements(aWriter); }
aWriter.EndArray();
}
aWriter.EndObject();
aWriter.StartObjectProperty("frameTable");
{
{
JSONSchemaWriter schema(aWriter);
schema.WriteField("location");
schema.WriteField("relevantForJS");
schema.WriteField("innerWindowID");
schema.WriteField("implementation");
schema.WriteField("optimizations");
schema.WriteField("line");
schema.WriteField("column");
schema.WriteField("category");
schema.WriteField("subcategory");
}
aWriter.StartArrayProperty("data");
{ uniqueStacks.SpliceFrameTableElements(aWriter); }
aWriter.EndArray();
}
aWriter.EndObject();
aWriter.StartArrayProperty("stringTable");
{
std::move(*uniqueStacks.mUniqueStrings)
.SpliceStringTableElements(aWriter);
}
aWriter.EndArray();
}
if (aCx && JSTracerEnabled) {
StreamTraceLoggerJSON(aCx, aWriter, aProcessStartTime);
}
aWriter.End();
aWriter.ResetUniqueStrings();
}
void ProfiledThreadData::StreamTraceLoggerJSON(
JSContext* aCx, SpliceableJSONWriter& aWriter,
const mozilla::TimeStamp& aProcessStartTime) {
aWriter.StartObjectProperty("jsTracerEvents");
{
JS::AutoTraceLoggerLockGuard lockGuard;
JS::SpewTraceLoggerThread(aCx);
uint32_t length = 0;
// Collect Event Ids
aWriter.StartArrayProperty("events", mozilla::JSONWriter::SingleLineStyle);
{
JS::TraceLoggerIdBuffer collectionBuffer(lockGuard, aCx);
while (collectionBuffer.NextChunk()) {
for (uint32_t val : collectionBuffer) {
aWriter.IntElement(val);
length++;
}
}
}
aWriter.EndArray();
// Collect Event Timestamps
aWriter.StartArrayProperty("timestamps",
mozilla::JSONWriter::SingleLineStyle);
{
JS::TraceLoggerTimeStampBuffer collectionBuffer(lockGuard, aCx);
while (collectionBuffer.NextChunk()) {
for (mozilla::TimeStamp val : collectionBuffer) {
aWriter.DoubleElement((val - aProcessStartTime).ToMicroseconds());
}
}
}
aWriter.EndArray();
// Collect Event Durations
aWriter.StartArrayProperty("durations",
mozilla::JSONWriter::SingleLineStyle);
{
JS::TraceLoggerDurationBuffer collectionBuffer(lockGuard, aCx);
while (collectionBuffer.NextChunk()) {
for (double val : collectionBuffer) {
if (val == -1) {
aWriter.NullElement();
} else {
aWriter.DoubleElement(val);
}
}
}
}
aWriter.EndArray();
// Collect Event LineNo
aWriter.StartArrayProperty("line", mozilla::JSONWriter::SingleLineStyle);
{
JS::TraceLoggerLineNoBuffer collectionBuffer(lockGuard, aCx);
while (collectionBuffer.NextChunk()) {
for (int32_t val : collectionBuffer) {
if (val == -1) {
aWriter.NullElement();
} else {
aWriter.IntElement(val);
}
}
}
}
aWriter.EndArray();
// Collect Event ColNo
aWriter.StartArrayProperty("column", mozilla::JSONWriter::SingleLineStyle);
{
JS::TraceLoggerColNoBuffer collectionBuffer(lockGuard, aCx);
while (collectionBuffer.NextChunk()) {
for (int32_t val : collectionBuffer) {
if (val == -1) {
aWriter.NullElement();
} else {
aWriter.IntElement(val);
}
}
}
}
aWriter.EndArray();
aWriter.IntProperty("length", length);
}
aWriter.EndObject();
}
int StreamSamplesAndMarkers(const char* aName, int aThreadId,
const ProfileBuffer& aBuffer,
SpliceableJSONWriter& aWriter,
const nsACString& aProcessName,
const nsACString& aETLDplus1,
const mozilla::TimeStamp& aProcessStartTime,
const mozilla::TimeStamp& aRegisterTime,
const mozilla::TimeStamp& aUnregisterTime,
double aSinceTime, UniqueStacks& aUniqueStacks) {
int processedThreadId = 0;
aWriter.StringProperty("processType",
mozilla::MakeStringSpan(XRE_GetProcessTypeString()));
aWriter.StringProperty("name", mozilla::MakeStringSpan(aName));
// Use given process name (if any), unless we're the parent process.
if (XRE_IsParentProcess()) {
aWriter.StringProperty("processName", "Parent Process");
} else if (!aProcessName.IsEmpty()) {
aWriter.StringProperty("processName", aProcessName);
}
if (!aETLDplus1.IsEmpty()) {
aWriter.StringProperty("eTLD+1", aETLDplus1);
}
if (aRegisterTime) {
aWriter.DoubleProperty(
"registerTime", (aRegisterTime - aProcessStartTime).ToMilliseconds());
} else {
aWriter.NullProperty("registerTime");
}
if (aUnregisterTime) {
aWriter.DoubleProperty(
"unregisterTime",
(aUnregisterTime - aProcessStartTime).ToMilliseconds());
} else {
aWriter.NullProperty("unregisterTime");
}
aWriter.StartObjectProperty("samples");
{
{
JSONSchemaWriter schema(aWriter);
schema.WriteField("stack");
schema.WriteField("time");
schema.WriteField("eventDelay");
#define RUNNING_TIME_FIELD(index, name, unit, jsonProperty) \
schema.WriteField(#jsonProperty);
PROFILER_FOR_EACH_RUNNING_TIME(RUNNING_TIME_FIELD)
#undef RUNNING_TIME_FIELD
}
aWriter.StartArrayProperty("data");
{
processedThreadId = aBuffer.StreamSamplesToJSON(
aWriter, aThreadId, aSinceTime, aUniqueStacks);
}
aWriter.EndArray();
}
aWriter.EndObject();
aWriter.StartObjectProperty("markers");
{
{
JSONSchemaWriter schema(aWriter);
schema.WriteField("name");
schema.WriteField("startTime");
schema.WriteField("endTime");
schema.WriteField("phase");
schema.WriteField("category");
schema.WriteField("data");
}
aWriter.StartArrayProperty("data");
{
aBuffer.StreamMarkersToJSON(aWriter, aThreadId, aProcessStartTime,
aSinceTime, aUniqueStacks);
}
aWriter.EndArray();
}
aWriter.EndObject();
aWriter.IntProperty("pid",
static_cast<int64_t>(profiler_current_process_id()));
aWriter.IntProperty(
"tid",
static_cast<int64_t>(aThreadId != 0 ? aThreadId : processedThreadId));
return processedThreadId;
}
void ProfiledThreadData::NotifyAboutToLoseJSContext(
JSContext* aContext, const mozilla::TimeStamp& aProcessStartTime,
ProfileBuffer& aBuffer) {
if (!mBufferPositionWhenReceivedJSContext) {
return;
}
MOZ_RELEASE_ASSERT(aContext);
if (mJITFrameInfoForPreviousJSContexts &&
mJITFrameInfoForPreviousJSContexts->HasExpired(
aBuffer.BufferRangeStart())) {
mJITFrameInfoForPreviousJSContexts = nullptr;
}
mozilla::UniquePtr<JITFrameInfo> jitFrameInfo =
mJITFrameInfoForPreviousJSContexts
? std::move(mJITFrameInfoForPreviousJSContexts)
: mozilla::MakeUnique<JITFrameInfo>();
aBuffer.AddJITInfoForRange(*mBufferPositionWhenReceivedJSContext,
mThreadInfo->ThreadId(), aContext, *jitFrameInfo);
mJITFrameInfoForPreviousJSContexts = std::move(jitFrameInfo);
mBufferPositionWhenReceivedJSContext = mozilla::Nothing();
}
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