void ThreadProfile::IterateTags(IterateTagsCallback aCallback)
{
MOZ_ASSERT(aCallback);
int readPos = mReadPos;
while (readPos != mLastFlushPos) {
// Number of tag consumed
int incBy = 1;
const ProfileEntry& entry = mEntries[readPos];
// Read ahead to the next tag, if it's a 'd' tag process it now
const char* tagStringData = entry.mTagData;
int readAheadPos = (readPos + 1) % mEntrySize;
char tagBuff[DYNAMIC_MAX_STRING];
// Make sure the string is always null terminated if it fills up DYNAMIC_MAX_STRING-2
tagBuff[DYNAMIC_MAX_STRING-1] = '\0';
if (readAheadPos != mLastFlushPos && mEntries[readAheadPos].mTagName == 'd') {
tagStringData = processDynamicTag(readPos, &incBy, tagBuff);
}
aCallback(entry, tagStringData);
readPos = (readPos + incBy) % mEntrySize;
}
}
void ProfileBuffer::IterateTagsForThread(IterateTagsCallback aCallback, int aThreadId)
{
MOZ_ASSERT(aCallback);
int readPos = mReadPos;
int currentThreadID = -1;
while (readPos != mWritePos) {
const ProfileEntry& entry = mEntries[readPos];
if (entry.mTagName == 'T') {
currentThreadID = entry.mTagInt;
readPos = (readPos + 1) % mEntrySize;
continue;
}
// Number of tags consumed
int incBy = 1;
// Read ahead to the next tag, if it's a 'd' tag process it now
const char* tagStringData = entry.mTagData;
int readAheadPos = (readPos + 1) % mEntrySize;
char tagBuff[DYNAMIC_MAX_STRING];
// Make sure the string is always null terminated if it fills up DYNAMIC_MAX_STRING-2
tagBuff[DYNAMIC_MAX_STRING-1] = '\0';
if (readAheadPos != mWritePos && mEntries[readAheadPos].mTagName == 'd') {
tagStringData = processDynamicTag(readPos, &incBy, tagBuff);
}
if (currentThreadID == aThreadId) {
aCallback(entry, tagStringData);
}
readPos = (readPos + incBy) % mEntrySize;
}
}
void ThreadProfile::StreamJSObject(JSStreamWriter& b)
{
b.BeginObject();
// Thread meta data
if (XRE_GetProcessType() == GeckoProcessType_Plugin) {
// TODO Add the proper plugin name
b.NameValue("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.
b.NameValue("name", "Content");
} else {
b.NameValue("name", Name());
}
b.NameValue("tid", static_cast<int>(mThreadId));
b.Name("samples");
b.BeginArray();
bool sample = false;
int readPos = mReadPos;
while (readPos != mLastFlushPos) {
// Number of tag consumed
ProfileEntry entry = mEntries[readPos];
switch (entry.mTagName) {
case 'r':
{
if (sample) {
b.NameValue("responsiveness", entry.mTagFloat);
}
}
break;
case 'p':
{
if (sample) {
b.NameValue("power", entry.mTagFloat);
}
}
break;
case 'R':
{
if (sample) {
b.NameValue("rss", entry.mTagFloat);
}
}
break;
case 'U':
{
if (sample) {
b.NameValue("uss", entry.mTagFloat);
}
}
break;
case 'f':
{
if (sample) {
b.NameValue("frameNumber", entry.mTagInt);
}
}
break;
case 't':
{
if (sample) {
b.NameValue("time", entry.mTagFloat);
}
}
break;
case 's':
{
// end the previous sample if there was one
if (sample) {
b.EndObject();
}
// begin the next sample
b.BeginObject();
sample = true;
// Seek forward through the entire sample, looking for frames
// this is an easier approach to reason about than adding more
// control variables and cases to the loop that goes through the buffer once
b.Name("frames");
b.BeginArray();
b.BeginObject();
b.NameValue("location", "(root)");
b.EndObject();
int framePos = (readPos + 1) % mEntrySize;
ProfileEntry frame = mEntries[framePos];
while (framePos != mLastFlushPos && frame.mTagName != 's') {
int incBy = 1;
frame = mEntries[framePos];
// Read ahead to the next tag, if it's a 'd' tag process it now
const char* tagStringData = frame.mTagData;
int readAheadPos = (framePos + 1) % mEntrySize;
char tagBuff[DYNAMIC_MAX_STRING];
// Make sure the string is always null terminated if it fills up
// DYNAMIC_MAX_STRING-2
tagBuff[DYNAMIC_MAX_STRING-1] = '\0';
if (readAheadPos != mLastFlushPos && mEntries[readAheadPos].mTagName == 'd') {
tagStringData = processDynamicTag(framePos, &incBy, tagBuff);
}
// Write one frame. It can have either
// 1. only location - 'l' containing a memory address
// 2. location and line number - 'c' followed by 'd's,
// an optional 'n' and an optional 'y'
if (frame.mTagName == 'l') {
b.BeginObject();
// Bug 753041
// We need a double cast here to tell GCC that we don't want to sign
// extend 32-bit addresses starting with 0xFXXXXXX.
unsigned long long pc = (unsigned long long)(uintptr_t)frame.mTagPtr;
snprintf(tagBuff, DYNAMIC_MAX_STRING, "%#llx", pc);
b.NameValue("location", tagBuff);
b.EndObject();
} else if (frame.mTagName == 'c') {
b.BeginObject();
b.NameValue("location", tagStringData);
readAheadPos = (framePos + incBy) % mEntrySize;
if (readAheadPos != mLastFlushPos &&
mEntries[readAheadPos].mTagName == 'n') {
b.NameValue("line", mEntries[readAheadPos].mTagInt);
incBy++;
}
readAheadPos = (framePos + incBy) % mEntrySize;
if (readAheadPos != mLastFlushPos &&
mEntries[readAheadPos].mTagName == 'y') {
b.NameValue("category", mEntries[readAheadPos].mTagInt);
incBy++;
}
b.EndObject();
}
framePos = (framePos + incBy) % mEntrySize;
}
b.EndArray();
}
break;
}
readPos = (readPos + 1) % mEntrySize;
}
if (sample) {
b.EndObject();
}
b.EndArray();
b.Name("markers");
b.BeginArray();
readPos = mReadPos;
while (readPos != mLastFlushPos) {
ProfileEntry entry = mEntries[readPos];
if (entry.mTagName == 'm') {
entry.getMarker()->StreamJSObject(b);
}
readPos = (readPos + 1) % mEntrySize;
}
b.EndArray();
b.EndObject();
}
JSCustomObject* ThreadProfile2::ToJSObject(JSContext *aCx)
{
JSObjectBuilder b(aCx);
JSCustomObject *profile = b.CreateObject();
JSCustomArray *samples = b.CreateArray();
b.DefineProperty(profile, "samples", samples);
JSCustomObject *sample = NULL;
JSCustomArray *frames = NULL;
int readPos = mReadPos;
while (readPos != mLastFlushPos) {
// Number of tag consumed
int incBy = 1;
ProfileEntry2 entry = mEntries[readPos];
// Read ahead to the next tag, if it's a 'd' tag process it now
const char* tagStringData = entry.mTagData;
int readAheadPos = (readPos + 1) % mEntrySize;
char tagBuff[DYNAMIC_MAX_STRING];
// Make sure the string is always null terminated if it fills up
// DYNAMIC_MAX_STRING-2
tagBuff[DYNAMIC_MAX_STRING-1] = '\0';
if (readAheadPos != mLastFlushPos && mEntries[readAheadPos].mTagName == 'd') {
tagStringData = processDynamicTag(readPos, &incBy, tagBuff);
}
switch (entry.mTagName) {
case 's':
sample = b.CreateObject();
b.DefineProperty(sample, "name", tagStringData);
frames = b.CreateArray();
b.DefineProperty(sample, "frames", frames);
b.ArrayPush(samples, sample);
break;
case 'r':
{
if (sample) {
b.DefineProperty(sample, "responsiveness", entry.mTagFloat);
}
}
break;
case 'f':
{
if (sample) {
b.DefineProperty(sample, "frameNumber", entry.mTagLine);
}
}
break;
case 't':
{
if (sample) {
b.DefineProperty(sample, "time", entry.mTagFloat);
}
}
break;
case 'c':
case 'l':
{
if (sample) {
JSCustomObject *frame = b.CreateObject();
if (entry.mTagName == 'l') {
// Bug 753041
// We need a double cast here to tell GCC that we don't want to sign
// extend 32-bit addresses starting with 0xFXXXXXX.
unsigned long long pc = (unsigned long long)(uintptr_t)entry.mTagPtr;
snprintf(tagBuff, DYNAMIC_MAX_STRING, "%#llx", pc);
b.DefineProperty(frame, "location", tagBuff);
} else {
b.DefineProperty(frame, "location", tagStringData);
readAheadPos = (readPos + incBy) % mEntrySize;
if (readAheadPos != mLastFlushPos &&
mEntries[readAheadPos].mTagName == 'n') {
b.DefineProperty(frame, "line",
mEntries[readAheadPos].mTagLine);
incBy++;
}
}
b.ArrayPush(frames, frame);
}
}
}
readPos = (readPos + incBy) % mEntrySize;
}
return profile;
}
void ThreadProfile::BuildJSObject(Builder& b,
typename Builder::ObjectHandle profile)
{
// Thread meta data
if (XRE_GetProcessType() == GeckoProcessType_Plugin) {
// TODO Add the proper plugin name
b.DefineProperty(profile, "name", "Plugin");
} else {
b.DefineProperty(profile, "name", mName);
}
b.DefineProperty(profile, "tid", static_cast<int>(mThreadId));
typename Builder::RootedArray samples(b.context(), b.CreateArray());
b.DefineProperty(profile, "samples", samples);
typename Builder::RootedObject sample(b.context());
typename Builder::RootedArray frames(b.context());
typename Builder::RootedArray markers(b.context());
int readPos = mReadPos;
while (readPos != mLastFlushPos) {
// Number of tag consumed
int incBy = 1;
ProfileEntry entry = mEntries[readPos];
// Read ahead to the next tag, if it's a 'd' tag process it now
const char* tagStringData = entry.mTagData;
int readAheadPos = (readPos + 1) % mEntrySize;
char tagBuff[DYNAMIC_MAX_STRING];
// Make sure the string is always null terminated if it fills up
// DYNAMIC_MAX_STRING-2
tagBuff[DYNAMIC_MAX_STRING-1] = '\0';
if (readAheadPos != mLastFlushPos && mEntries[readAheadPos].mTagName == 'd') {
tagStringData = processDynamicTag(readPos, &incBy, tagBuff);
}
switch (entry.mTagName) {
case 'm':
{
if (sample) {
if (!markers) {
markers = b.CreateArray();
b.DefineProperty(sample, "marker", markers);
}
entry.getMarker()->BuildJSObject(b, markers);
}
}
break;
case 'r':
{
if (sample) {
b.DefineProperty(sample, "responsiveness", entry.mTagFloat);
}
}
break;
case 'p':
{
if (sample) {
b.DefineProperty(sample, "power", entry.mTagFloat);
}
}
break;
case 'f':
{
if (sample) {
b.DefineProperty(sample, "frameNumber", entry.mTagLine);
}
}
break;
case 't':
{
if (sample) {
b.DefineProperty(sample, "time", entry.mTagFloat);
}
}
break;
case 's':
sample = b.CreateObject();
b.DefineProperty(sample, "name", tagStringData);
frames = b.CreateArray();
b.DefineProperty(sample, "frames", frames);
b.ArrayPush(samples, sample);
// Created lazily
markers = nullptr;
// Fall though to create a label for the 's' tag
case 'c':
case 'l':
{
if (sample) {
typename Builder::RootedObject frame(b.context(), b.CreateObject());
if (entry.mTagName == 'l') {
// Bug 753041
// We need a double cast here to tell GCC that we don't want to sign
// extend 32-bit addresses starting with 0xFXXXXXX.
unsigned long long pc = (unsigned long long)(uintptr_t)entry.mTagPtr;
snprintf(tagBuff, DYNAMIC_MAX_STRING, "%#llx", pc);
b.DefineProperty(frame, "location", tagBuff);
} else {
b.DefineProperty(frame, "location", tagStringData);
readAheadPos = (readPos + incBy) % mEntrySize;
if (readAheadPos != mLastFlushPos &&
mEntries[readAheadPos].mTagName == 'n') {
b.DefineProperty(frame, "line",
mEntries[readAheadPos].mTagLine);
incBy++;
}
}
b.ArrayPush(frames, frame);
}
}
}
readPos = (readPos + incBy) % mEntrySize;
}
}
void ProfileBuffer::StreamSamplesToJSObject(JSStreamWriter& b, int aThreadId, JSRuntime* rt)
{
b.BeginArray();
bool sample = false;
int readPos = mReadPos;
int currentThreadID = -1;
while (readPos != mWritePos) {
ProfileEntry entry = mEntries[readPos];
if (entry.mTagName == 'T') {
currentThreadID = entry.mTagInt;
}
if (currentThreadID == aThreadId) {
switch (entry.mTagName) {
case 'r':
{
if (sample) {
b.NameValue("responsiveness", entry.mTagFloat);
}
}
break;
case 'p':
{
if (sample) {
b.NameValue("power", entry.mTagFloat);
}
}
break;
case 'R':
{
if (sample) {
b.NameValue("rss", entry.mTagFloat);
}
}
break;
case 'U':
{
if (sample) {
b.NameValue("uss", entry.mTagFloat);
}
}
break;
case 'f':
{
if (sample) {
b.NameValue("frameNumber", entry.mTagInt);
}
}
break;
case 't':
{
if (sample) {
b.NameValue("time", entry.mTagFloat);
}
}
break;
case 's':
{
// end the previous sample if there was one
if (sample) {
b.EndObject();
}
// begin the next sample
b.BeginObject();
sample = true;
// Seek forward through the entire sample, looking for frames
// this is an easier approach to reason about than adding more
// control variables and cases to the loop that goes through the buffer once
b.Name("frames");
b.BeginArray();
b.BeginObject();
b.NameValue("location", "(root)");
b.EndObject();
int framePos = (readPos + 1) % mEntrySize;
ProfileEntry frame = mEntries[framePos];
while (framePos != mWritePos && frame.mTagName != 's' && frame.mTagName != 'T') {
int incBy = 1;
frame = mEntries[framePos];
// Read ahead to the next tag, if it's a 'd' tag process it now
const char* tagStringData = frame.mTagData;
int readAheadPos = (framePos + 1) % mEntrySize;
char tagBuff[DYNAMIC_MAX_STRING];
// Make sure the string is always null terminated if it fills up
// DYNAMIC_MAX_STRING-2
tagBuff[DYNAMIC_MAX_STRING-1] = '\0';
if (readAheadPos != mWritePos && mEntries[readAheadPos].mTagName == 'd') {
tagStringData = processDynamicTag(framePos, &incBy, tagBuff);
}
// Write one frame. It can have either
// 1. only location - 'l' containing a memory address
// 2. location and line number - 'c' followed by 'd's,
// an optional 'n' and an optional 'y'
if (frame.mTagName == 'l') {
b.BeginObject();
// Bug 753041
// We need a double cast here to tell GCC that we don't want to sign
// extend 32-bit addresses starting with 0xFXXXXXX.
unsigned long long pc = (unsigned long long)(uintptr_t)frame.mTagPtr;
snprintf(tagBuff, DYNAMIC_MAX_STRING, "%#llx", pc);
b.NameValue("location", tagBuff);
b.EndObject();
} else if (frame.mTagName == 'c') {
b.BeginObject();
b.NameValue("location", tagStringData);
readAheadPos = (framePos + incBy) % mEntrySize;
if (readAheadPos != mWritePos &&
mEntries[readAheadPos].mTagName == 'n') {
b.NameValue("line", mEntries[readAheadPos].mTagInt);
incBy++;
}
readAheadPos = (framePos + incBy) % mEntrySize;
if (readAheadPos != mWritePos &&
mEntries[readAheadPos].mTagName == 'y') {
b.NameValue("category", mEntries[readAheadPos].mTagInt);
incBy++;
}
readAheadPos = (framePos + incBy) % mEntrySize;
if (readAheadPos != mWritePos &&
mEntries[readAheadPos].mTagName == 'J') {
void* pc = mEntries[readAheadPos].mTagPtr;
// TODOshu: cannot stream tracked optimization info if
// the JS engine has already shut down when streaming.
if (rt) {
JSScript *optsScript;
jsbytecode *optsPC;
b.Name("opts");
b.BeginArray();
StreamOptimizationTypeInfoOp typeInfoOp(b);
JS::ForEachTrackedOptimizationTypeInfo(rt, pc, typeInfoOp);
StreamOptimizationAttemptsOp attemptOp(b);
JS::ForEachTrackedOptimizationAttempt(rt, pc, attemptOp,
&optsScript, &optsPC);
b.EndArray();
b.NameValue("optsLine", JS_PCToLineNumber(optsScript, optsPC));
}
}
b.EndObject();
}
framePos = (framePos + incBy) % mEntrySize;
}
b.EndArray();
}
break;
}
}
readPos = (readPos + 1) % mEntrySize;
}
if (sample) {
b.EndObject();
}
b.EndArray();
}