dart::ProfilerStackWalker Class Reference

Inheritance diagram for dart::ProfilerStackWalker:

Public Member Functions
	ProfilerStackWalker (Dart_Port port_id, Sample *head_sample, SampleBuffer *sample_buffer, intptr_t skip_count=0)
bool	Append (uword pc, uword fp)
Public Member Functions inherited from dart::ValueObject
	ValueObject ()
	~ValueObject ()

Protected Attributes
Dart_Port	port_id_
Sample *	sample_
SampleBuffer *	sample_buffer_
intptr_t	skip_count_
intptr_t	frames_skipped_
intptr_t	frame_index_
intptr_t	total_frames_

Detailed Description

Definition at line 124 of file profiler.cc.

Constructor & Destructor Documentation

ProfilerStackWalker()

dart::ProfilerStackWalker::ProfilerStackWalker ( Dart_Port  port_id, Sample *  head_sample, SampleBuffer *  sample_buffer, intptr_t  skip_count = 0  )

inline

Definition at line 126 of file profiler.cc.

      : port_id_(port_id),
        sample_(head_sample),
        sample_buffer_(sample_buffer),
        skip_count_(skip_count),
        frames_skipped_(0),
        frame_index_(0),
        total_frames_(0) {
    if (sample_ == nullptr) {
      ASSERT(sample_buffer_ == nullptr);
    } else {
      ASSERT(sample_buffer_ != nullptr);
      ASSERT(sample_->head_sample());
    }
  }

Member Function Documentation

Append()

bool dart::ProfilerStackWalker::Append ( uword  pc, uword  fp  )

inline

Definition at line 145 of file profiler.cc.

                                  {
    if (frames_skipped_ < skip_count_) {
      frames_skipped_++;
      return true;
    }
 
    if (sample_ == nullptr) {
      DumpStackFrame(frame_index_, pc, fp);
      frame_index_++;
      total_frames_++;
      return true;
    }
    if (total_frames_ >= FLAG_max_profile_depth) {
      sample_->set_truncated_trace(true);
      return false;
    }
    ASSERT(sample_ != nullptr);
    if (frame_index_ == Sample::kPCArraySizeInWords) {
      Sample* new_sample = sample_buffer_->ReserveSampleAndLink(sample_);
      if (new_sample == nullptr) {
        // Could not reserve new sample- mark this as truncated.
        sample_->set_truncated_trace(true);
        return false;
      }
      frame_index_ = 0;
      sample_ = new_sample;
    }
    ASSERT(frame_index_ < Sample::kPCArraySizeInWords);
    sample_->SetAt(frame_index_, pc);
    frame_index_++;
    total_frames_++;
    return true;
  }

Member Data Documentation

frame_index_

intptr_t dart::ProfilerStackWalker::frame_index_

protected

Definition at line 185 of file profiler.cc.

frames_skipped_

intptr_t dart::ProfilerStackWalker::frames_skipped_

protected

Definition at line 184 of file profiler.cc.

port_id_

Dart_Port dart::ProfilerStackWalker::port_id_

protected

Definition at line 180 of file profiler.cc.

sample_

Sample* dart::ProfilerStackWalker::sample_

protected

Definition at line 181 of file profiler.cc.

sample_buffer_

SampleBuffer* dart::ProfilerStackWalker::sample_buffer_

protected

Definition at line 182 of file profiler.cc.

skip_count_

intptr_t dart::ProfilerStackWalker::skip_count_

protected

Definition at line 183 of file profiler.cc.

total_frames_

intptr_t dart::ProfilerStackWalker::total_frames_

protected

Definition at line 186 of file profiler.cc.

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

• third_party/dart-lang/sdk/runtime/vm/profiler.cc