dart::Profile Class Reference

#include <profiler_service.h>

Inheritance diagram for dart::Profile:

Public Member Functions
	Profile ()
void	Build (Thread *thread, Isolate *isolate, SampleFilter *filter, SampleBlockBuffer *sample_block_buffer)
int64_t	min_time () const
int64_t	max_time () const
int64_t	GetTimeSpan () const
intptr_t	sample_count () const
ProcessedSample *	SampleAt (intptr_t index)
intptr_t	NumFunctions () const
ProfileFunction *	GetFunction (intptr_t index)
ProfileCode *	GetCode (intptr_t index)
ProfileCode *	GetCodeFromPC (uword pc, int64_t timestamp)
void	PrintProfileJSON (JSONStream *stream, bool include_code_samples)
void	PrintProfileJSON (JSONObject *obj, bool include_code_samples, bool is_event=false)
ProfileFunction *	FindFunction (const Function &function)
Public Member Functions inherited from dart::ValueObject
	ValueObject ()
	~ValueObject ()

Friends
class	ProfileBuilder

Detailed Description

Definition at line 370 of file profiler_service.h.

Constructor & Destructor Documentation

Profile()

dart::Profile::Profile

(

)

Definition at line 1484 of file profiler_service.cc.

    : zone_(Thread::Current()->zone()),
      samples_(nullptr),
      live_code_(nullptr),
      dead_code_(nullptr),
      tag_code_(nullptr),
      functions_(nullptr),
      dead_code_index_offset_(-1),
      tag_code_index_offset_(-1),
      min_time_(kMaxInt64),
      max_time_(0),
      sample_count_(0) {}

Member Function Documentation

Build()

void dart::Profile::Build	(	Thread *	thread,
		Isolate *	isolate,
		SampleFilter *	filter,
		SampleBlockBuffer *	sample_block_buffer
	)

Definition at line 1497 of file profiler_service.cc.

                                                      {
  ASSERT(isolate != nullptr);
 
  // Disable thread interrupts while processing the buffer.
  DisableThreadInterruptsScope dtis(thread);
  ProfileBuilder builder(thread, isolate, filter, sample_buffer, this);
  builder.Build();
}

FindFunction()

ProfileFunction * dart::Profile::FindFunction

(

const Function &

function

)

Definition at line 1870 of file profiler_service.cc.

                                                               {
  return (functions_ != nullptr) ? functions_->Lookup(function) : nullptr;
}

GetCode()

ProfileCode * dart::Profile::GetCode

(

intptr_t

index

)

Definition at line 1524 of file profiler_service.cc.

                                            {
  ASSERT(live_code_ != nullptr);
  ASSERT(dead_code_ != nullptr);
  ASSERT(tag_code_ != nullptr);
  ASSERT(dead_code_index_offset_ >= 0);
  ASSERT(tag_code_index_offset_ >= 0);
 
  // Code indexes span three arrays.
  //           0 ... |live_code|
  // |live_code| ... |dead_code|
  // |dead_code| ... |tag_code|
 
  if (index < dead_code_index_offset_) {
    return live_code_->At(index);
  }
 
  if (index < tag_code_index_offset_) {
    index -= dead_code_index_offset_;
    return dead_code_->At(index);
  }
 
  index -= tag_code_index_offset_;
  return tag_code_->At(index);
}

GetCodeFromPC()

ProfileCode * dart::Profile::GetCodeFromPC	(	uword	pc,
		int64_t	timestamp
	)

Definition at line 1549 of file profiler_service.cc.

                                                               {
  intptr_t index = live_code_->FindCodeIndexForPC(pc);
  ProfileCode* code = nullptr;
  if (index < 0) {
    index = dead_code_->FindCodeIndexForPC(pc);
    ASSERT(index >= 0);
    code = dead_code_->At(index);
  } else {
    code = live_code_->At(index);
    ASSERT(code != nullptr);
    if (code->compile_timestamp() > timestamp) {
      // Code is newer than sample. Fall back to dead code table.
      index = dead_code_->FindCodeIndexForPC(pc);
      ASSERT(index >= 0);
      code = dead_code_->At(index);
    }
  }
 
  ASSERT(code != nullptr);
  ASSERT(code->Contains(pc));
  ASSERT(code->compile_timestamp() <= timestamp);
  return code;
}

GetFunction()

ProfileFunction * dart::Profile::GetFunction

(

intptr_t

index

)

Definition at line 1519 of file profiler_service.cc.

                                                    {
  ASSERT(functions_ != nullptr);
  return functions_->At(index);
}

GetTimeSpan()

int64_t dart::Profile::GetTimeSpan ( ) const

inline

Definition at line 383 of file profiler_service.h.

{ return max_time() - min_time(); }

max_time()

int64_t dart::Profile::max_time ( ) const

inline

Definition at line 382 of file profiler_service.h.

{ return max_time_; }

min_time()

int64_t dart::Profile::min_time ( ) const

inline

Definition at line 381 of file profiler_service.h.

{ return min_time_; }

NumFunctions()

intptr_t dart::Profile::NumFunctions

(

)

const

Definition at line 1515 of file profiler_service.cc.

                                     {
  return functions_->length();
}

PrintProfileJSON() [1/2]

void dart::Profile::PrintProfileJSON	(	JSONObject *	obj,
		bool	include_code_samples,
		bool	is_event = false
	)

Definition at line 1879 of file profiler_service.cc.

                                              {
  ScopeTimer sw("Profile::PrintProfileJSON", FLAG_trace_profiler);
  Thread* thread = Thread::Current();
  if (is_event) {
    obj->AddProperty("type", "CpuSamplesEvent");
  } else {
    obj->AddProperty("type", "CpuSamples");
  }
  PrintHeaderJSON(obj);
  if (include_code_samples) {
    JSONArray codes(obj, "_codes");
    for (intptr_t i = 0; i < live_code_->length(); i++) {
      ProfileCode* code = live_code_->At(i);
      ASSERT(code != nullptr);
      code->PrintToJSONArray(&codes);
      thread->CheckForSafepoint();
    }
    for (intptr_t i = 0; i < dead_code_->length(); i++) {
      ProfileCode* code = dead_code_->At(i);
      ASSERT(code != nullptr);
      code->PrintToJSONArray(&codes);
      thread->CheckForSafepoint();
    }
    for (intptr_t i = 0; i < tag_code_->length(); i++) {
      ProfileCode* code = tag_code_->At(i);
      ASSERT(code != nullptr);
      code->PrintToJSONArray(&codes);
      thread->CheckForSafepoint();
    }
  }
 
  {
    JSONArray functions(obj, "functions");
    for (intptr_t i = 0; i < functions_->length(); i++) {
      ProfileFunction* function = functions_->At(i);
      ASSERT(function != nullptr);
      function->PrintToJSONArray(&functions, is_event);
      thread->CheckForSafepoint();
    }
  }
  PrintSamplesJSON(obj, include_code_samples);
  thread->CheckForSafepoint();
}

PrintProfileJSON() [2/2]

void dart::Profile::PrintProfileJSON	(	JSONStream *	stream,
		bool	include_code_samples
	)

Definition at line 1874 of file profiler_service.cc.

                                                                            {
  JSONObject obj(stream);
  PrintProfileJSON(&obj, include_code_samples);
}

sample_count()

intptr_t dart::Profile::sample_count ( ) const

inline

Definition at line 384 of file profiler_service.h.

{ return sample_count_; }

SampleAt()

ProcessedSample * dart::Profile::SampleAt

(

intptr_t

index

)

Definition at line 1509 of file profiler_service.cc.

                                                 {
  ASSERT(index >= 0);
  ASSERT(index < sample_count_);
  return samples_->At(index);
}

Friends And Related Symbol Documentation

ProfileBuilder

friend class ProfileBuilder

friend

Definition at line 448 of file profiler_service.h.

---

The documentation for this class was generated from the following files:

• third_party/dart-lang/sdk/runtime/vm/profiler_service.h
• third_party/dart-lang/sdk/runtime/vm/profiler_service.cc