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03e415a4e884bb2bd18e366edfbbcbc86f4bf17e
sdk/runtime/vm/timeline.cc
T
Chinmay Garde aa64d1d2e6 Allow building Dart with Fuchsia SDK enabled buildroots. 
The Fuchsia SDK can now be consumed by non-Fuchsia buildroots to produce
Fuchsia artifacts.

The Fuchsia SDK comes with a JSON manifest that describes the various SDK
"parts". GN targets are stamped for each of these parts. The location of these
GN targets can be configured. That location is set to |fuchsia_sdk_root| in
each buildroot. This variable is defined in //build/fuchsia/sdk.gni in each
buildroot. For buildroots that don't care or know about the Fuchsia SDK, that
file may not exist. This is why, the import of that file is guarded behind
the is_fuchsia flag. When the Fuchsia SDK is enabled, that file will define
values for two required variable |using_fuchsia_sdk| and |fuchsia_sdk_root|.

The first flag defines if the SDK is being used. If unset (but defined), the
builds are in-tree. Eventually we want only SDK builds. |fuchsia_sdk_root|
is set to the spot in the buildroot where the GN targets for the SDK parts
are stamped.

Change-Id: I604612c8d6a21efb07b323610e80b596abc1a6dd
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/101540
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Chinmay Garde <chinmaygarde@google.com>
2019-05-07 00:43:33 +00:00

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// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#include "vm/globals.h"
#if defined(SUPPORT_TIMELINE)
#include "vm/timeline.h"
#include <errno.h>
#include <fcntl.h>
#include <cstdlib>
#include "platform/atomic.h"
#include "vm/isolate.h"
#include "vm/json_stream.h"
#include "vm/lockers.h"
#include "vm/log.h"
#include "vm/object.h"
#include "vm/service_event.h"
#include "vm/thread.h"
namespace dart {
DEFINE_FLAG(bool, complete_timeline, false, "Record the complete timeline");
DEFINE_FLAG(bool, startup_timeline, false, "Record the startup timeline");
DEFINE_FLAG(
bool,
systrace_timeline,
false,
"Record the timeline to the platform's tracing service if there is one");
DEFINE_FLAG(bool, trace_timeline, false, "Trace timeline backend");
DEFINE_FLAG(bool,
trace_timeline_analysis,
false,
"Trace timeline analysis backend");
DEFINE_FLAG(bool,
timing,
false,
"Dump isolate timing information from timeline.");
DEFINE_FLAG(charp,
timeline_dir,
NULL,
"Enable all timeline trace streams and output VM global trace "
"into specified directory.");
DEFINE_FLAG(charp,
timeline_streams,
NULL,
"Comma separated list of timeline streams to record. "
"Valid values: all, API, Compiler, CompilerVerbose, Dart, "
"Debugger, Embedder, GC, Isolate, and VM.");
DEFINE_FLAG(charp,
timeline_recorder,
"ring",
"Select the timeline recorder used. "
"Valid values: ring, endless, startup, and systrace.")
// Implementation notes:
//
// Writing events:
// |TimelineEvent|s are written into |TimelineEventBlock|s. Each |Thread| caches
// a |TimelineEventBlock| object so that it can write events without
// synchronizing with other threads in the system. Even though the |Thread| owns
// the |TimelineEventBlock| the block may need to be reclaimed by the reporting
// system. To support that, a |Thread| must hold its |timeline_block_lock_|
// when operating on the |TimelineEventBlock|. This lock will only ever be
// busy if blocks are being reclaimed by the reporting system.
//
// Reporting:
// When requested, the timeline is serialized in the trace-event format
// (https://goo.gl/hDZw5M). The request can be for a VM-wide timeline or an
// isolate specific timeline. In both cases it may be that a thread has
// a |TimelineEventBlock| cached in TLS partially filled with events. In order
// to report a complete timeline the cached |TimelineEventBlock|s need to be
// reclaimed.
//
// Reclaiming open |TimelineEventBlock|s from threads:
//
// Each |Thread| can have one |TimelineEventBlock| cached in it.
//
// To reclaim blocks, we iterate over all threads and remove the cached
// |TimelineEventBlock| from each thread. This is safe because we hold the
// |Thread|'s |timeline_block_lock_| meaning the block can't be being modified.
//
// Locking notes:
// The following locks are used by the timeline system:
// - |TimelineEventRecorder::lock_| This lock is held whenever a
// |TimelineEventBlock| is being requested or reclaimed.
// - |Thread::timeline_block_lock_| This lock is held whenever a |Thread|'s
// cached block is being operated on.
// - |Thread::thread_list_lock_| This lock is held when iterating over
// |Thread|s.
//
// Locks must always be taken in the following order:
// |Thread::thread_list_lock_|
// |Thread::timeline_block_lock_|
// |TimelineEventRecorder::lock_|
//
static TimelineEventRecorder* CreateTimelineRecorder() {
// Some flags require that we use the endless recorder.
const bool use_endless_recorder =
(FLAG_timeline_dir != NULL) || FLAG_timing || FLAG_complete_timeline;
const bool use_startup_recorder = FLAG_startup_timeline;
const bool use_systrace_recorder = FLAG_systrace_timeline;
const char* flag = FLAG_timeline_recorder;
if (use_systrace_recorder || (flag != NULL)) {
if (use_systrace_recorder || (strcmp("systrace", flag) == 0)) {
if (FLAG_trace_timeline) {
THR_Print("Using the Systrace timeline recorder.\n");
}
#if defined(HOST_OS_LINUX) || defined(HOST_OS_ANDROID)
return new TimelineEventSystraceRecorder();
#elif defined(HOST_OS_FUCHSIA) && !defined(FUCHSIA_SDK)
return new TimelineEventFuchsiaRecorder();
#else
OS::PrintErr(
"Warning: The systrace timeline recorder is equivalent to the"
"ring recorder on this platform.");
return new TimelineEventRingRecorder();
#endif
}
}
if (use_endless_recorder || (flag != NULL)) {
if (use_endless_recorder || (strcmp("endless", flag) == 0)) {
if (FLAG_trace_timeline) {
THR_Print("Using the endless timeline recorder.\n");
}
return new TimelineEventEndlessRecorder();
}
}
if (use_startup_recorder || (flag != NULL)) {
if (use_startup_recorder || (strcmp("startup", flag) == 0)) {
if (FLAG_trace_timeline) {
THR_Print("Using the startup recorder.\n");
}
return new TimelineEventStartupRecorder();
}
}
if (FLAG_trace_timeline) {
THR_Print("Using the ring timeline recorder.\n");
}
// Always fall back to the ring recorder.
return new TimelineEventRingRecorder();
}
// Returns a caller freed array of stream names in FLAG_timeline_streams.
static MallocGrowableArray<char*>* GetEnabledByDefaultTimelineStreams() {
MallocGrowableArray<char*>* result = new MallocGrowableArray<char*>();
if (FLAG_timeline_streams == NULL) {
// Nothing set.
return result;
}
char* save_ptr; // Needed for strtok_r.
// strtok modifies arg 1 so we make a copy of it.
char* streams = strdup(FLAG_timeline_streams);
char* token = strtok_r(streams, ",", &save_ptr);
while (token != NULL) {
result->Add(strdup(token));
token = strtok_r(NULL, ",", &save_ptr);
}
free(streams);
return result;
}
// Frees the result of |GetEnabledByDefaultTimelineStreams|.
static void FreeEnabledByDefaultTimelineStreams(
MallocGrowableArray<char*>* streams) {
if (streams == NULL) {
return;
}
for (intptr_t i = 0; i < streams->length(); i++) {
free((*streams)[i]);
}
delete streams;
}
// Returns true if |streams| contains |stream| or "all". Not case sensitive.
static bool HasStream(MallocGrowableArray<char*>* streams, const char* stream) {
if ((FLAG_timeline_dir != NULL) || FLAG_timing || FLAG_complete_timeline ||
FLAG_startup_timeline) {
return true;
}
for (intptr_t i = 0; i < streams->length(); i++) {
const char* checked_stream = (*streams)[i];
if ((strstr(checked_stream, "all") != NULL) ||
(strstr(checked_stream, stream) != NULL)) {
return true;
}
}
return false;
}
void Timeline::Init() {
ASSERT(recorder_ == NULL);
recorder_ = CreateTimelineRecorder();
ASSERT(recorder_ != NULL);
enabled_streams_ = GetEnabledByDefaultTimelineStreams();
// Global overrides.
#define TIMELINE_STREAM_FLAG_DEFAULT(name, fuchsia_name) \
stream_##name##_.set_enabled(HasStream(enabled_streams_, #name));
TIMELINE_STREAM_LIST(TIMELINE_STREAM_FLAG_DEFAULT)
#undef TIMELINE_STREAM_FLAG_DEFAULT
}
void Timeline::Cleanup() {
ASSERT(recorder_ != NULL);
#ifndef PRODUCT
if (FLAG_timeline_dir != NULL) {
recorder_->WriteTo(FLAG_timeline_dir);
}
#endif
// Disable global streams.
#define TIMELINE_STREAM_DISABLE(name, fuchsia_name) \
Timeline::stream_##name##_.set_enabled(false);
TIMELINE_STREAM_LIST(TIMELINE_STREAM_DISABLE)
#undef TIMELINE_STREAM_DISABLE
delete recorder_;
recorder_ = NULL;
if (enabled_streams_ != NULL) {
FreeEnabledByDefaultTimelineStreams(enabled_streams_);
enabled_streams_ = NULL;
}
}
TimelineEventRecorder* Timeline::recorder() {
return recorder_;
}
void Timeline::ReclaimCachedBlocksFromThreads() {
TimelineEventRecorder* recorder = Timeline::recorder();
if (recorder == NULL) {
return;
}
// Iterate over threads.
OSThreadIterator it;
while (it.HasNext()) {
OSThread* thread = it.Next();
MutexLocker ml(thread->timeline_block_lock());
// Grab block and clear it.
TimelineEventBlock* block = thread->timeline_block();
thread->set_timeline_block(NULL);
// TODO(johnmccutchan): Consider dropping the timeline_block_lock here
// if we can do it everywhere. This would simplify the lock ordering
// requirements.
recorder->FinishBlock(block);
}
}
#ifndef PRODUCT
void Timeline::PrintFlagsToJSON(JSONStream* js) {
JSONObject obj(js);
obj.AddProperty("type", "TimelineFlags");
TimelineEventRecorder* recorder = Timeline::recorder();
if (recorder == NULL) {
obj.AddProperty("recorderName", "null");
} else {
obj.AddProperty("recorderName", recorder->name());
}
{
JSONArray availableStreams(&obj, "availableStreams");
#define ADD_STREAM_NAME(name, fuchsia_name) availableStreams.AddValue(#name);
TIMELINE_STREAM_LIST(ADD_STREAM_NAME);
#undef ADD_STREAM_NAME
}
{
JSONArray recordedStreams(&obj, "recordedStreams");
#define ADD_RECORDED_STREAM_NAME(name, fuchsia_name) \
if (stream_##name##_.enabled()) { \
recordedStreams.AddValue(#name); \
}
TIMELINE_STREAM_LIST(ADD_RECORDED_STREAM_NAME);
#undef ADD_RECORDED_STREAM_NAME
}
}
#endif
void Timeline::Clear() {
TimelineEventRecorder* recorder = Timeline::recorder();
if (recorder == NULL) {
return;
}
ReclaimCachedBlocksFromThreads();
recorder->Clear();
}
void TimelineEventArguments::SetNumArguments(intptr_t length) {
if (length == length_) {
return;
}
if (length == 0) {
Free();
return;
}
if (buffer_ == NULL) {
// calloc already nullifies
buffer_ = reinterpret_cast<TimelineEventArgument*>(
calloc(sizeof(TimelineEventArgument), length));
} else {
for (intptr_t i = length; i < length_; ++i) {
free(buffer_[i].value);
}
buffer_ = reinterpret_cast<TimelineEventArgument*>(
realloc(buffer_, sizeof(TimelineEventArgument) * length));
if (length > length_) {
memset(buffer_ + length_, 0,
sizeof(TimelineEventArgument) * (length - length_));
}
}
length_ = length;
}
void TimelineEventArguments::SetArgument(intptr_t i,
const char* name,
char* argument) {
ASSERT(i >= 0);
ASSERT(i < length_);
buffer_[i].name = name;
buffer_[i].value = argument;
}
void TimelineEventArguments::CopyArgument(intptr_t i,
const char* name,
const char* argument) {
SetArgument(i, name, strdup(argument));
}
void TimelineEventArguments::FormatArgument(intptr_t i,
const char* name,
const char* fmt,
va_list args) {
ASSERT(i >= 0);
ASSERT(i < length_);
va_list args2;
va_copy(args2, args);
intptr_t len = Utils::VSNPrint(NULL, 0, fmt, args);
va_end(args);
char* buffer = reinterpret_cast<char*>(malloc(len + 1));
Utils::VSNPrint(buffer, (len + 1), fmt, args2);
va_end(args2);
SetArgument(i, name, buffer);
}
void TimelineEventArguments::StealArguments(TimelineEventArguments* arguments) {
Free();
length_ = arguments->length_;
buffer_ = arguments->buffer_;
arguments->length_ = 0;
arguments->buffer_ = NULL;
}
void TimelineEventArguments::Free() {
if (buffer_ == NULL) {
return;
}
for (intptr_t i = 0; i < length_; i++) {
free(buffer_[i].value);
}
free(buffer_);
buffer_ = NULL;
length_ = 0;
}
TimelineEventRecorder* Timeline::recorder_ = NULL;
MallocGrowableArray<char*>* Timeline::enabled_streams_ = NULL;
#define TIMELINE_STREAM_DEFINE(name, fuchsia_name) \
TimelineStream Timeline::stream_##name##_(#name, fuchsia_name, false);
TIMELINE_STREAM_LIST(TIMELINE_STREAM_DEFINE)
#undef TIMELINE_STREAM_DEFINE
TimelineEvent::TimelineEvent()
: timestamp0_(0),
timestamp1_(0),
thread_timestamp0_(-1),
thread_timestamp1_(-1),
state_(0),
label_(NULL),
stream_(NULL),
thread_(OSThread::kInvalidThreadId),
isolate_id_(ILLEGAL_PORT) {}
TimelineEvent::~TimelineEvent() {
Reset();
}
void TimelineEvent::Reset() {
if (owns_label() && label_ != NULL) {
free(const_cast<char*>(label_));
}
state_ = 0;
thread_ = OSThread::kInvalidThreadId;
isolate_id_ = ILLEGAL_PORT;
stream_ = NULL;
label_ = NULL;
arguments_.Free();
set_event_type(kNone);
set_pre_serialized_args(false);
set_owns_label(false);
}
void TimelineEvent::AsyncBegin(const char* label,
int64_t async_id,
int64_t micros) {
Init(kAsyncBegin, label);
set_timestamp0(micros);
// Overload timestamp1_ with the async_id.
set_timestamp1(async_id);
}
void TimelineEvent::AsyncInstant(const char* label,
int64_t async_id,
int64_t micros) {
Init(kAsyncInstant, label);
set_timestamp0(micros);
// Overload timestamp1_ with the async_id.
set_timestamp1(async_id);
}
void TimelineEvent::AsyncEnd(const char* label,
int64_t async_id,
int64_t micros) {
Init(kAsyncEnd, label);
set_timestamp0(micros);
// Overload timestamp1_ with the async_id.
set_timestamp1(async_id);
}
void TimelineEvent::DurationBegin(const char* label,
int64_t micros,
int64_t thread_micros) {
Init(kDuration, label);
set_timestamp0(micros);
set_thread_timestamp0(thread_micros);
}
void TimelineEvent::DurationEnd(int64_t micros, int64_t thread_micros) {
ASSERT(timestamp1_ == 0);
set_timestamp1(micros);
set_thread_timestamp1(thread_micros);
}
void TimelineEvent::Instant(const char* label, int64_t micros) {
Init(kInstant, label);
set_timestamp0(micros);
}
void TimelineEvent::Duration(const char* label,
int64_t start_micros,
int64_t end_micros,
int64_t thread_start_micros,
int64_t thread_end_micros) {
Init(kDuration, label);
set_timestamp0(start_micros);
set_timestamp1(end_micros);
set_thread_timestamp0(thread_start_micros);
set_thread_timestamp1(thread_end_micros);
}
void TimelineEvent::Begin(const char* label,
int64_t micros,
int64_t thread_micros) {
Init(kBegin, label);
set_timestamp0(micros);
set_thread_timestamp0(thread_micros);
}
void TimelineEvent::End(const char* label,
int64_t micros,
int64_t thread_micros) {
Init(kEnd, label);
set_timestamp0(micros);
set_thread_timestamp0(thread_micros);
}
void TimelineEvent::Counter(const char* label, int64_t micros) {
Init(kCounter, label);
set_timestamp0(micros);
}
void TimelineEvent::FlowBegin(const char* label,
int64_t async_id,
int64_t micros) {
Init(kFlowBegin, label);
set_timestamp0(micros);
// Overload timestamp1_ with the async_id.
set_timestamp1(async_id);
}
void TimelineEvent::FlowStep(const char* label,
int64_t async_id,
int64_t micros) {
Init(kFlowStep, label);
set_timestamp0(micros);
// Overload timestamp1_ with the async_id.
set_timestamp1(async_id);
}
void TimelineEvent::FlowEnd(const char* label,
int64_t async_id,
int64_t micros) {
Init(kFlowEnd, label);
set_timestamp0(micros);
// Overload timestamp1_ with the async_id.
set_timestamp1(async_id);
}
void TimelineEvent::Metadata(const char* label, int64_t micros) {
Init(kMetadata, label);
set_timestamp0(micros);
}
void TimelineEvent::CompleteWithPreSerializedArgs(char* args_json) {
set_pre_serialized_args(true);
SetNumArguments(1);
SetArgument(0, "Dart Arguments", args_json);
Complete();
}
void TimelineEvent::FormatArgument(intptr_t i,
const char* name,
const char* fmt,
...) {
va_list args;
va_start(args, fmt);
arguments_.FormatArgument(i, name, fmt, args);
}
void TimelineEvent::Complete() {
TimelineEventRecorder* recorder = Timeline::recorder();
if (recorder != NULL) {
recorder->CompleteEvent(this);
}
}
void TimelineEvent::Init(EventType event_type, const char* label) {
ASSERT(label != NULL);
state_ = 0;
timestamp0_ = 0;
timestamp1_ = 0;
thread_timestamp0_ = -1;
thread_timestamp1_ = -1;
OSThread* os_thread = OSThread::Current();
ASSERT(os_thread != NULL);
thread_ = os_thread->trace_id();
Isolate* isolate = Isolate::Current();
if (isolate != NULL) {
isolate_id_ = isolate->main_port();
} else {
isolate_id_ = ILLEGAL_PORT;
}
label_ = label;
arguments_.Free();
set_event_type(event_type);
set_pre_serialized_args(false);
set_owns_label(false);
}
bool TimelineEvent::Within(int64_t time_origin_micros,
int64_t time_extent_micros) {
if ((time_origin_micros == -1) || (time_extent_micros == -1)) {
// No time range specified.
return true;
}
if (IsFinishedDuration()) {
// Event is from e_t0 to e_t1.
int64_t e_t0 = TimeOrigin();
int64_t e_t1 = TimeEnd();
ASSERT(e_t0 <= e_t1);
// Range is from r_t0 to r_t1.
int64_t r_t0 = time_origin_micros;
int64_t r_t1 = time_origin_micros + time_extent_micros;
ASSERT(r_t0 <= r_t1);
return !((r_t1 < e_t0) || (e_t1 < r_t0));
}
int64_t delta = TimeOrigin() - time_origin_micros;
return (delta >= 0) && (delta <= time_extent_micros);
}
#ifndef PRODUCT
void TimelineEvent::PrintJSON(JSONStream* stream) const {
if (!FLAG_support_service) {
return;
}
JSONObject obj(stream);
int64_t pid = OS::ProcessId();
int64_t tid = OSThread::ThreadIdToIntPtr(thread_);
obj.AddProperty("name", label_);
obj.AddProperty("cat", stream_ != NULL ? stream_->name() : NULL);
obj.AddProperty64("tid", tid);
obj.AddProperty64("pid", pid);
obj.AddPropertyTimeMicros("ts", TimeOrigin());
if (HasThreadCPUTime()) {
obj.AddPropertyTimeMicros("tts", ThreadCPUTimeOrigin());
}
switch (event_type()) {
case kBegin: {
obj.AddProperty("ph", "B");
} break;
case kEnd: {
obj.AddProperty("ph", "E");
} break;
case kDuration: {
obj.AddProperty("ph", "X");
obj.AddPropertyTimeMicros("dur", TimeDuration());
if (HasThreadCPUTime()) {
obj.AddPropertyTimeMicros("tdur", ThreadCPUTimeDuration());
}
} break;
case kInstant: {
obj.AddProperty("ph", "i");
obj.AddProperty("s", "p");
} break;
case kAsyncBegin: {
obj.AddProperty("ph", "b");
obj.AddPropertyF("id", "%" Px64 "", AsyncId());
} break;
case kAsyncInstant: {
obj.AddProperty("ph", "n");
obj.AddPropertyF("id", "%" Px64 "", AsyncId());
} break;
case kAsyncEnd: {
obj.AddProperty("ph", "e");
obj.AddPropertyF("id", "%" Px64 "", AsyncId());
} break;
case kCounter: {
obj.AddProperty("ph", "C");
} break;
case kFlowBegin: {
obj.AddProperty("ph", "s");
obj.AddPropertyF("id", "%" Px64 "", AsyncId());
} break;
case kFlowStep: {
obj.AddProperty("ph", "t");
obj.AddPropertyF("id", "%" Px64 "", AsyncId());
} break;
case kFlowEnd: {
obj.AddProperty("ph", "f");
obj.AddProperty("bp", "e");
obj.AddPropertyF("id", "%" Px64 "", AsyncId());
} break;
case kMetadata: {
obj.AddProperty("ph", "M");
} break;
default:
UNIMPLEMENTED();
}
if (pre_serialized_args()) {
ASSERT(arguments_.length() == 1);
stream->AppendSerializedObject("args", arguments_[0].value);
if (isolate_id_ != ILLEGAL_PORT) {
// If we have one, append the isolate id.
stream->UncloseObject();
stream->PrintfProperty("isolateNumber", "%" Pd64 "",
static_cast<int64_t>(isolate_id_));
stream->CloseObject();
}
} else {
JSONObject args(&obj, "args");
for (intptr_t i = 0; i < arguments_.length(); i++) {
const TimelineEventArgument& arg = arguments_[i];
args.AddProperty(arg.name, arg.value);
}
if (isolate_id_ != ILLEGAL_PORT) {
// If we have one, append the isolate id.
args.AddPropertyF("isolateNumber", "%" Pd64 "",
static_cast<int64_t>(isolate_id_));
}
}
}
#endif
int64_t TimelineEvent::TimeOrigin() const {
return timestamp0_;
}
int64_t TimelineEvent::AsyncId() const {
return timestamp1_;
}
int64_t TimelineEvent::LowTime() const {
return timestamp0_;
}
int64_t TimelineEvent::HighTime() const {
if (event_type() == kDuration) {
return timestamp1_;
} else {
return timestamp0_;
}
}
int64_t TimelineEvent::TimeDuration() const {
if (timestamp1_ == 0) {
// This duration is still open, use current time as end.
return OS::GetCurrentMonotonicMicros() - timestamp0_;
}
return timestamp1_ - timestamp0_;
}
bool TimelineEvent::HasThreadCPUTime() const {
return (thread_timestamp0_ != -1);
}
int64_t TimelineEvent::ThreadCPUTimeOrigin() const {
ASSERT(HasThreadCPUTime());
return thread_timestamp0_;
}
int64_t TimelineEvent::ThreadCPUTimeDuration() const {
ASSERT(HasThreadCPUTime());
if (thread_timestamp1_ == -1) {
// This duration is still open, use current time as end.
return OS::GetCurrentThreadCPUMicros() - thread_timestamp0_;
}
return thread_timestamp1_ - thread_timestamp0_;
}
TimelineStream::TimelineStream(const char* name,
const char* fuchsia_name,
bool enabled)
: name_(name),
fuchsia_name_(fuchsia_name),
#if defined(HOST_OS_FUCHSIA)
enabled_(true) { // For generated code.
#else
enabled_(enabled) {
#endif
}
TimelineEvent* TimelineStream::StartEvent() {
TimelineEventRecorder* recorder = Timeline::recorder();
if (!enabled() || (recorder == NULL)) {
return NULL;
}
ASSERT(name_ != NULL);
TimelineEvent* event = recorder->StartEvent();
if (event != NULL) {
event->StreamInit(this);
}
return event;
}
TimelineEventScope::TimelineEventScope(TimelineStream* stream,
const char* label)
: StackResource(reinterpret_cast<Thread*>(NULL)),
stream_(stream),
label_(label),
enabled_(false) {
Init();
}
TimelineEventScope::TimelineEventScope(Thread* thread,
TimelineStream* stream,
const char* label)
: StackResource(thread),
stream_(stream),
label_(label),
enabled_(false) {
Init();
}
TimelineEventScope::~TimelineEventScope() {}
void TimelineEventScope::Init() {
ASSERT(enabled_ == false);
ASSERT(label_ != NULL);
ASSERT(stream_ != NULL);
if (!stream_->enabled()) {
// Stream is not enabled, do nothing.
return;
}
enabled_ = true;
}
void TimelineEventScope::SetNumArguments(intptr_t length) {
if (!enabled()) {
return;
}
arguments_.SetNumArguments(length);
}
// |name| must be a compile time constant. Takes ownership of |argumentp|.
void TimelineEventScope::SetArgument(intptr_t i,
const char* name,
char* argument) {
if (!enabled()) {
return;
}
arguments_.SetArgument(i, name, argument);
}
// |name| must be a compile time constant. Copies |argument|.
void TimelineEventScope::CopyArgument(intptr_t i,
const char* name,
const char* argument) {
if (!enabled()) {
return;
}
arguments_.CopyArgument(i, name, argument);
}
void TimelineEventScope::FormatArgument(intptr_t i,
const char* name,
const char* fmt,
...) {
if (!enabled()) {
return;
}
va_list args;
va_start(args, fmt);
arguments_.FormatArgument(i, name, fmt, args);
}
void TimelineEventScope::StealArguments(TimelineEvent* event) {
if (event == NULL) {
return;
}
event->StealArguments(&arguments_);
}
TimelineDurationScope::TimelineDurationScope(TimelineStream* stream,
const char* label)
: TimelineEventScope(stream, label) {
if (!enabled()) {
return;
}
timestamp_ = OS::GetCurrentMonotonicMicros();
thread_timestamp_ = OS::GetCurrentThreadCPUMicros();
}
TimelineDurationScope::TimelineDurationScope(Thread* thread,
TimelineStream* stream,
const char* label)
: TimelineEventScope(thread, stream, label) {
if (!enabled()) {
return;
}
timestamp_ = OS::GetCurrentMonotonicMicros();
thread_timestamp_ = OS::GetCurrentThreadCPUMicros();
}
TimelineDurationScope::~TimelineDurationScope() {
if (!ShouldEmitEvent()) {
return;
}
TimelineEvent* event = stream()->StartEvent();
if (event == NULL) {
// Stream is now disabled.
return;
}
ASSERT(event != NULL);
// Emit a duration event.
event->Duration(label(), timestamp_, OS::GetCurrentMonotonicMicros(),
thread_timestamp_, OS::GetCurrentThreadCPUMicros());
StealArguments(event);
event->Complete();
}
TimelineBeginEndScope::TimelineBeginEndScope(TimelineStream* stream,
const char* label)
: TimelineEventScope(stream, label) {
EmitBegin();
}
TimelineBeginEndScope::TimelineBeginEndScope(Thread* thread,
TimelineStream* stream,
const char* label)
: TimelineEventScope(thread, stream, label) {
EmitBegin();
}
TimelineBeginEndScope::~TimelineBeginEndScope() {
EmitEnd();
}
void TimelineBeginEndScope::EmitBegin() {
if (!ShouldEmitEvent()) {
return;
}
TimelineEvent* event = stream()->StartEvent();
if (event == NULL) {
// Stream is now disabled.
set_enabled(false);
return;
}
ASSERT(event != NULL);
// Emit a begin event.
event->Begin(label());
event->Complete();
}
void TimelineBeginEndScope::EmitEnd() {
if (!ShouldEmitEvent()) {
return;
}
TimelineEvent* event = stream()->StartEvent();
if (event == NULL) {
// Stream is now disabled.
set_enabled(false);
return;
}
ASSERT(event != NULL);
// Emit an end event.
event->End(label());
StealArguments(event);
event->Complete();
}
TimelineEventFilter::TimelineEventFilter(int64_t time_origin_micros,
int64_t time_extent_micros)
: time_origin_micros_(time_origin_micros),
time_extent_micros_(time_extent_micros) {
ASSERT(time_origin_micros_ >= -1);
ASSERT(time_extent_micros_ >= -1);
}
TimelineEventFilter::~TimelineEventFilter() {}
IsolateTimelineEventFilter::IsolateTimelineEventFilter(
Dart_Port isolate_id,
int64_t time_origin_micros,
int64_t time_extent_micros)
: TimelineEventFilter(time_origin_micros, time_extent_micros),
isolate_id_(isolate_id) {}
TimelineEventRecorder::TimelineEventRecorder()
: async_id_(0), time_low_micros_(0), time_high_micros_(0) {}
#ifndef PRODUCT
void TimelineEventRecorder::PrintJSONMeta(JSONArray* events) const {
if (!FLAG_support_service) {
return;
}
OSThreadIterator it;
while (it.HasNext()) {
OSThread* thread = it.Next();
const char* thread_name = thread->name();
if (thread_name == NULL) {
// Only emit a thread name if one was set.
continue;
}
JSONObject obj(events);
int64_t pid = OS::ProcessId();
int64_t tid = OSThread::ThreadIdToIntPtr(thread->trace_id());
obj.AddProperty("name", "thread_name");
obj.AddProperty("ph", "M");
obj.AddProperty64("pid", pid);
obj.AddProperty64("tid", tid);
{
JSONObject args(&obj, "args");
args.AddPropertyF("name", "%s (%" Pd64 ")", thread_name, tid);
args.AddProperty("mode", "basic");
}
}
}
#endif
TimelineEvent* TimelineEventRecorder::ThreadBlockStartEvent() {
// Grab the current thread.
OSThread* thread = OSThread::Current();
ASSERT(thread != NULL);
Mutex* thread_block_lock = thread->timeline_block_lock();
ASSERT(thread_block_lock != NULL);
// We are accessing the thread's timeline block- so take the lock here.
// This lock will be held until the call to |CompleteEvent| is made.
thread_block_lock->Lock();
#if defined(DEBUG)
Thread* T = Thread::Current();
if (T != NULL) {
T->IncrementNoSafepointScopeDepth();
}
#endif // defined(DEBUG)
TimelineEventBlock* thread_block = thread->timeline_block();
if ((thread_block != NULL) && thread_block->IsFull()) {
MutexLocker ml(&lock_);
// Thread has a block and it is full:
// 1) Mark it as finished.
thread_block->Finish();
// 2) Allocate a new block.
thread_block = GetNewBlockLocked();
thread->set_timeline_block(thread_block);
} else if (thread_block == NULL) {
MutexLocker ml(&lock_);
// Thread has no block. Attempt to allocate one.
thread_block = GetNewBlockLocked();
thread->set_timeline_block(thread_block);
}
if (thread_block != NULL) {
// NOTE: We are exiting this function with the thread's block lock held.
ASSERT(!thread_block->IsFull());
TimelineEvent* event = thread_block->StartEvent();
return event;
}
// Drop lock here as no event is being handed out.
#if defined(DEBUG)
if (T != NULL) {
T->DecrementNoSafepointScopeDepth();
}
#endif // defined(DEBUG)
thread_block_lock->Unlock();
return NULL;
}
void TimelineEventRecorder::ResetTimeTracking() {
time_high_micros_ = 0;
time_low_micros_ = kMaxInt64;
}
void TimelineEventRecorder::ReportTime(int64_t micros) {
if (time_high_micros_ < micros) {
time_high_micros_ = micros;
}
if (time_low_micros_ > micros) {
time_low_micros_ = micros;
}
}
int64_t TimelineEventRecorder::TimeOriginMicros() const {
if (time_high_micros_ == 0) {
return 0;
}
return time_low_micros_;
}
int64_t TimelineEventRecorder::TimeExtentMicros() const {
if (time_high_micros_ == 0) {
return 0;
}
return time_high_micros_ - time_low_micros_;
}
void TimelineEventRecorder::ThreadBlockCompleteEvent(TimelineEvent* event) {
if (event == NULL) {
return;
}
// Grab the current thread.
OSThread* thread = OSThread::Current();
ASSERT(thread != NULL);
// Unlock the thread's block lock.
Mutex* thread_block_lock = thread->timeline_block_lock();
ASSERT(thread_block_lock != NULL);
#if defined(DEBUG)
Thread* T = Thread::Current();
if (T != NULL) {
T->DecrementNoSafepointScopeDepth();
}
#endif // defined(DEBUG)
thread_block_lock->Unlock();
}
#ifndef PRODUCT
void TimelineEventRecorder::WriteTo(const char* directory) {
if (!FLAG_support_service) {
return;
}
Dart_FileOpenCallback file_open = Dart::file_open_callback();
Dart_FileWriteCallback file_write = Dart::file_write_callback();
Dart_FileCloseCallback file_close = Dart::file_close_callback();
if ((file_open == NULL) || (file_write == NULL) || (file_close == NULL)) {
return;
}
Timeline::ReclaimCachedBlocksFromThreads();
intptr_t pid = OS::ProcessId();
char* filename =
OS::SCreate(NULL, "%s/dart-timeline-%" Pd ".json", directory, pid);
void* file = (*file_open)(filename, true);
if (file == NULL) {
OS::PrintErr("Failed to write timeline file: %s\n", filename);
free(filename);
return;
}
free(filename);
JSONStream js;
TimelineEventFilter filter;
PrintTraceEvent(&js, &filter);
// Steal output from JSONStream.
char* output = NULL;
intptr_t output_length = 0;
js.Steal(&output, &output_length);
(*file_write)(output, output_length, file);
// Free the stolen output.
free(output);
(*file_close)(file);
return;
}
#endif
int64_t TimelineEventRecorder::GetNextAsyncId() {
// TODO(johnmccutchan): Gracefully handle wrap around.
#if defined(HOST_OS_FUCHSIA) && !defined(FUCHSIA_SDK)
return trace_generate_nonce();
#else
uint32_t next =
static_cast<uint32_t>(AtomicOperations::FetchAndIncrement(&async_id_));
return static_cast<int64_t>(next);
#endif
}
void TimelineEventRecorder::FinishBlock(TimelineEventBlock* block) {
if (block == NULL) {
return;
}
MutexLocker ml(&lock_);
block->Finish();
}
TimelineEventBlock* TimelineEventRecorder::GetNewBlock() {
MutexLocker ml(&lock_);
return GetNewBlockLocked();
}
TimelineEventFixedBufferRecorder::TimelineEventFixedBufferRecorder(
intptr_t capacity)
: memory_(NULL),
blocks_(NULL),
capacity_(capacity),
num_blocks_(0),
block_cursor_(0) {
// Capacity must be a multiple of TimelineEventBlock::kBlockSize
ASSERT((capacity % TimelineEventBlock::kBlockSize) == 0);
// Allocate blocks array.
num_blocks_ = capacity / TimelineEventBlock::kBlockSize;
intptr_t size = Utils::RoundUp(num_blocks_ * sizeof(TimelineEventBlock),
VirtualMemory::PageSize());
const bool kNotExecutable = false;
memory_ = VirtualMemory::Allocate(size, kNotExecutable, "dart-timeline");
if (memory_ == NULL) {
OUT_OF_MEMORY();
}
blocks_ = reinterpret_cast<TimelineEventBlock*>(memory_->address());
}
TimelineEventFixedBufferRecorder::~TimelineEventFixedBufferRecorder() {
// Delete all blocks.
for (intptr_t i = 0; i < num_blocks_; i++) {
blocks_[i].Reset();
}
delete memory_;
}
#ifndef PRODUCT
void TimelineEventFixedBufferRecorder::PrintJSONEvents(
JSONArray* events,
TimelineEventFilter* filter) {
if (!FLAG_support_service) {
return;
}
MutexLocker ml(&lock_);
ResetTimeTracking();
intptr_t block_offset = FindOldestBlockIndex();
if (block_offset == -1) {
// All blocks are empty.
return;
}
for (intptr_t block_idx = 0; block_idx < num_blocks_; block_idx++) {
TimelineEventBlock* block =
&blocks_[(block_idx + block_offset) % num_blocks_];
if (!filter->IncludeBlock(block)) {
continue;
}
for (intptr_t event_idx = 0; event_idx < block->length(); event_idx++) {
TimelineEvent* event = block->At(event_idx);
if (filter->IncludeEvent(event) &&
event->Within(filter->time_origin_micros(),
filter->time_extent_micros())) {
ReportTime(event->LowTime());
ReportTime(event->HighTime());
events->AddValue(event);
}
}
}
}
void TimelineEventFixedBufferRecorder::PrintJSON(JSONStream* js,
TimelineEventFilter* filter) {
if (!FLAG_support_service) {
return;
}
JSONObject topLevel(js);
topLevel.AddProperty("type", "_Timeline");
{
JSONArray events(&topLevel, "traceEvents");
PrintJSONMeta(&events);
PrintJSONEvents(&events, filter);
}
topLevel.AddPropertyTimeMicros("timeOriginMicros", TimeOriginMicros());
topLevel.AddPropertyTimeMicros("timeExtentMicros", TimeExtentMicros());
}
void TimelineEventFixedBufferRecorder::PrintTraceEvent(
JSONStream* js,
TimelineEventFilter* filter) {
if (!FLAG_support_service) {
return;
}
JSONArray events(js);
PrintJSONMeta(&events);
PrintJSONEvents(&events, filter);
}
#endif
TimelineEventBlock* TimelineEventFixedBufferRecorder::GetHeadBlockLocked() {
return &blocks_[0];
}
void TimelineEventFixedBufferRecorder::Clear() {
MutexLocker ml(&lock_);
for (intptr_t i = 0; i < num_blocks_; i++) {
TimelineEventBlock* block = &blocks_[i];
block->Reset();
}
}
intptr_t TimelineEventFixedBufferRecorder::FindOldestBlockIndex() const {
int64_t earliest_time = kMaxInt64;
intptr_t earliest_index = -1;
for (intptr_t block_idx = 0; block_idx < num_blocks_; block_idx++) {
TimelineEventBlock* block = &blocks_[block_idx];
if (block->IsEmpty()) {
// Skip empty blocks.
continue;
}
if (block->LowerTimeBound() < earliest_time) {
earliest_time = block->LowerTimeBound();
earliest_index = block_idx;
}
}
return earliest_index;
}
TimelineEvent* TimelineEventFixedBufferRecorder::StartEvent() {
return ThreadBlockStartEvent();
}
void TimelineEventFixedBufferRecorder::CompleteEvent(TimelineEvent* event) {
if (event == NULL) {
return;
}
ThreadBlockCompleteEvent(event);
}
TimelineEventBlock* TimelineEventRingRecorder::GetNewBlockLocked() {
// TODO(johnmccutchan): This function should only hand out blocks
// which have been marked as finished.
if (block_cursor_ == num_blocks_) {
block_cursor_ = 0;
}
TimelineEventBlock* block = &blocks_[block_cursor_++];
block->Reset();
block->Open();
return block;
}
TimelineEventBlock* TimelineEventStartupRecorder::GetNewBlockLocked() {
if (block_cursor_ == num_blocks_) {
return NULL;
}
TimelineEventBlock* block = &blocks_[block_cursor_++];
block->Reset();
block->Open();
return block;
}
TimelineEventCallbackRecorder::TimelineEventCallbackRecorder() {}
TimelineEventCallbackRecorder::~TimelineEventCallbackRecorder() {}
#ifndef PRODUCT
void TimelineEventCallbackRecorder::PrintJSON(JSONStream* js,
TimelineEventFilter* filter) {
if (!FLAG_support_service) {
return;
}
JSONObject topLevel(js);
topLevel.AddProperty("type", "_Timeline");
{
JSONArray events(&topLevel, "traceEvents");
PrintJSONMeta(&events);
}
}
void TimelineEventCallbackRecorder::PrintTraceEvent(
JSONStream* js,
TimelineEventFilter* filter) {
if (!FLAG_support_service) {
return;
}
JSONArray events(js);
}
#endif
TimelineEvent* TimelineEventCallbackRecorder::StartEvent() {
TimelineEvent* event = new TimelineEvent();
return event;
}
void TimelineEventCallbackRecorder::CompleteEvent(TimelineEvent* event) {
OnEvent(event);
delete event;
}
TimelineEventPlatformRecorder::TimelineEventPlatformRecorder() {}
TimelineEventPlatformRecorder::~TimelineEventPlatformRecorder() {}
#ifndef PRODUCT
void TimelineEventPlatformRecorder::PrintJSON(JSONStream* js,
TimelineEventFilter* filter) {
if (!FLAG_support_service) {
return;
}
JSONObject topLevel(js);
topLevel.AddProperty("type", "_Timeline");
{
JSONArray events(&topLevel, "traceEvents");
PrintJSONMeta(&events);
}
}
void TimelineEventPlatformRecorder::PrintTraceEvent(
JSONStream* js,
TimelineEventFilter* filter) {
if (!FLAG_support_service) {
return;
}
JSONArray events(js);
}
#endif
TimelineEvent* TimelineEventPlatformRecorder::StartEvent() {
TimelineEvent* event = new TimelineEvent();
return event;
}
void TimelineEventPlatformRecorder::CompleteEvent(TimelineEvent* event) {
OnEvent(event);
delete event;
}
TimelineEventEndlessRecorder::TimelineEventEndlessRecorder()
: head_(NULL), block_index_(0) {}
TimelineEventEndlessRecorder::~TimelineEventEndlessRecorder() {
TimelineEventBlock* current = head_;
head_ = NULL;
while (current != NULL) {
TimelineEventBlock* next = current->next();
delete current;
current = next;
}
}
#ifndef PRODUCT
void TimelineEventEndlessRecorder::PrintJSON(JSONStream* js,
TimelineEventFilter* filter) {
if (!FLAG_support_service) {
return;
}
JSONObject topLevel(js);
topLevel.AddProperty("type", "_Timeline");
{
JSONArray events(&topLevel, "traceEvents");
PrintJSONMeta(&events);
PrintJSONEvents(&events, filter);
}
topLevel.AddPropertyTimeMicros("timeOriginMicros", TimeOriginMicros());
topLevel.AddPropertyTimeMicros("timeExtentMicros", TimeExtentMicros());
}
void TimelineEventEndlessRecorder::PrintTraceEvent(
JSONStream* js,
TimelineEventFilter* filter) {
if (!FLAG_support_service) {
return;
}
JSONArray events(js);
PrintJSONMeta(&events);
PrintJSONEvents(&events, filter);
}
#endif
TimelineEventBlock* TimelineEventEndlessRecorder::GetHeadBlockLocked() {
return head_;
}
TimelineEvent* TimelineEventEndlessRecorder::StartEvent() {
return ThreadBlockStartEvent();
}
void TimelineEventEndlessRecorder::CompleteEvent(TimelineEvent* event) {
if (event == NULL) {
return;
}
ThreadBlockCompleteEvent(event);
}
TimelineEventBlock* TimelineEventEndlessRecorder::GetNewBlockLocked() {
TimelineEventBlock* block = new TimelineEventBlock(block_index_++);
block->set_next(head_);
block->Open();
head_ = block;
if (FLAG_trace_timeline) {
OS::PrintErr("Created new block %p\n", block);
}
return head_;
}
#ifndef PRODUCT
static int TimelineEventBlockCompare(TimelineEventBlock* const* a,
TimelineEventBlock* const* b) {
return (*a)->LowerTimeBound() - (*b)->LowerTimeBound();
}
void TimelineEventEndlessRecorder::PrintJSONEvents(
JSONArray* events,
TimelineEventFilter* filter) {
if (!FLAG_support_service) {
return;
}
MutexLocker ml(&lock_);
ResetTimeTracking();
// Collect all interesting blocks.
MallocGrowableArray<TimelineEventBlock*> blocks(8);
TimelineEventBlock* current = head_;
while (current != NULL) {
if (filter->IncludeBlock(current)) {
blocks.Add(current);
}
current = current->next();
}
// Bail early.
if (blocks.length() == 0) {
return;
}
// Sort the interesting blocks so that blocks with earlier events are
// outputted first.
blocks.Sort(TimelineEventBlockCompare);
// Output blocks in sorted order.
for (intptr_t block_idx = 0; block_idx < blocks.length(); block_idx++) {
current = blocks[block_idx];
intptr_t length = current->length();
for (intptr_t i = 0; i < length; i++) {
TimelineEvent* event = current->At(i);
if (filter->IncludeEvent(event) &&
event->Within(filter->time_origin_micros(),
filter->time_extent_micros())) {
ReportTime(event->LowTime());
ReportTime(event->HighTime());
events->AddValue(event);
}
}
}
}
#endif
void TimelineEventEndlessRecorder::Clear() {
TimelineEventBlock* current = head_;
while (current != NULL) {
TimelineEventBlock* next = current->next();
delete current;
current = next;
}
head_ = NULL;
block_index_ = 0;
OSThread* thread = OSThread::Current();
thread->set_timeline_block(NULL);
}
TimelineEventBlock::TimelineEventBlock(intptr_t block_index)
: next_(NULL),
length_(0),
block_index_(block_index),
thread_id_(OSThread::kInvalidThreadId),
in_use_(false) {}
TimelineEventBlock::~TimelineEventBlock() {
Reset();
}
#ifndef PRODUCT
void TimelineEventBlock::PrintJSON(JSONStream* js) const {
ASSERT(!in_use());
JSONArray events(js);
for (intptr_t i = 0; i < length(); i++) {
const TimelineEvent* event = At(i);
events.AddValue(event);
}
}
#endif
TimelineEvent* TimelineEventBlock::StartEvent() {
ASSERT(!IsFull());
if (FLAG_trace_timeline) {
OSThread* os_thread = OSThread::Current();
ASSERT(os_thread != NULL);
intptr_t tid = OSThread::ThreadIdToIntPtr(os_thread->id());
OS::PrintErr("StartEvent in block %p for thread %" Pd "\n", this, tid);
}
return &events_[length_++];
}
int64_t TimelineEventBlock::LowerTimeBound() const {
if (length_ == 0) {
return kMaxInt64;
}
ASSERT(length_ > 0);
return events_[0].TimeOrigin();
}
bool TimelineEventBlock::CheckBlock() {
if (length() == 0) {
return true;
}
for (intptr_t i = 0; i < length(); i++) {
if (At(i)->thread() != thread_id()) {
return false;
}
}
// - events have monotonically increasing timestamps.
int64_t last_time = LowerTimeBound();
for (intptr_t i = 0; i < length(); i++) {
if (last_time > At(i)->TimeOrigin()) {
return false;
}
last_time = At(i)->TimeOrigin();
}
return true;
}
void TimelineEventBlock::Reset() {
for (intptr_t i = 0; i < kBlockSize; i++) {
// Clear any extra data.
events_[i].Reset();
}
length_ = 0;
thread_id_ = OSThread::kInvalidThreadId;
in_use_ = false;
}
void TimelineEventBlock::Open() {
OSThread* os_thread = OSThread::Current();
ASSERT(os_thread != NULL);
thread_id_ = os_thread->trace_id();
in_use_ = true;
}
void TimelineEventBlock::Finish() {
if (FLAG_trace_timeline) {
OS::PrintErr("Finish block %p\n", this);
}
in_use_ = false;
#ifndef PRODUCT
if (Service::timeline_stream.enabled()) {
ServiceEvent service_event(NULL, ServiceEvent::kTimelineEvents);
service_event.set_timeline_event_block(this);
Service::HandleEvent(&service_event);
}
#endif
}
TimelineEventBlockIterator::TimelineEventBlockIterator(
TimelineEventRecorder* recorder)
: current_(NULL), recorder_(NULL) {
Reset(recorder);
}
TimelineEventBlockIterator::~TimelineEventBlockIterator() {
Reset(NULL);
}
void TimelineEventBlockIterator::Reset(TimelineEventRecorder* recorder) {
// Clear current.
current_ = NULL;
if (recorder_ != NULL) {
// Unlock old recorder.
recorder_->lock_.Unlock();
}
recorder_ = recorder;
if (recorder_ == NULL) {
return;
}
// Lock new recorder.
recorder_->lock_.Lock();
// Queue up first block.
current_ = recorder_->GetHeadBlockLocked();
}
bool TimelineEventBlockIterator::HasNext() const {
return current_ != NULL;
}
TimelineEventBlock* TimelineEventBlockIterator::Next() {
ASSERT(current_ != NULL);
TimelineEventBlock* r = current_;
current_ = current_->next();
return r;
}
void DartTimelineEventHelpers::ReportTaskEvent(Thread* thread,
TimelineEvent* event,
int64_t start,
int64_t id,
const char* phase,
const char* category,
char* name,
char* args) {
ASSERT(phase != NULL);
ASSERT((phase[0] == 'n') || (phase[0] == 'b') || (phase[0] == 'e'));
ASSERT(phase[1] == '\0');
switch (phase[0]) {
case 'n':
event->AsyncInstant(name, id, start);
break;
case 'b':
event->AsyncBegin(name, id, start);
break;
case 'e':
event->AsyncEnd(name, id, start);
break;
default:
UNREACHABLE();
}
event->set_owns_label(true);
event->CompleteWithPreSerializedArgs(args);
}
void DartTimelineEventHelpers::ReportCompleteEvent(Thread* thread,
TimelineEvent* event,
int64_t start,
int64_t start_cpu,
const char* category,
char* name,
char* args) {
const int64_t end = OS::GetCurrentMonotonicMicros();
const int64_t end_cpu = OS::GetCurrentThreadCPUMicros();
event->Duration(name, start, end, start_cpu, end_cpu);
event->set_owns_label(true);
event->CompleteWithPreSerializedArgs(args);
}
void DartTimelineEventHelpers::ReportFlowEvent(Thread* thread,
TimelineEvent* event,
int64_t start,
int64_t start_cpu,
const char* category,
char* name,
int64_t type,
int64_t flow_id,
char* args) {
TimelineEvent::EventType event_type =
static_cast<TimelineEvent::EventType>(type);
switch (event_type) {
case TimelineEvent::kFlowBegin:
event->FlowBegin(name, flow_id, start);
break;
case TimelineEvent::kFlowStep:
event->FlowStep(name, flow_id, start);
break;
case TimelineEvent::kFlowEnd:
event->FlowEnd(name, flow_id, start);
break;
default:
UNREACHABLE();
break;
}
event->set_owns_label(true);
event->CompleteWithPreSerializedArgs(args);
}
void DartTimelineEventHelpers::ReportInstantEvent(Thread* thread,
TimelineEvent* event,
int64_t start,
const char* category,
char* name,
char* args) {
event->Instant(name, start);
event->set_owns_label(true);
event->CompleteWithPreSerializedArgs(args);
}
} // namespace dart
#endif // defined(SUPPORT_TIMELINE)
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