v8::CpuProfile Class Reference

CpuProfile contains a CPU profile in a form of top-down call tree (from main() down to functions that do all the work). More...

#include <v8-profiler.h>

Collaboration diagram for v8::CpuProfile:

Public Member Functions
Handle< String >	GetTitle () const
	Returns CPU profile title. More...
const CpuProfileNode *	GetTopDownRoot () const
	Returns the root node of the top down call tree. More...
int	GetSamplesCount () const
	Returns number of samples recorded. More...
const CpuProfileNode *	GetSample (int index) const
	Returns profile node corresponding to the top frame the sample at the given index. More...
int64_t	GetSampleTimestamp (int index) const
	Returns the timestamp of the sample. More...
int64_t	GetStartTime () const
	Returns time when the profile recording was started (in microseconds) since some unspecified starting point. More...
int64_t	GetEndTime () const
	Returns time when the profile recording was stopped (in microseconds) since some unspecified starting point. More...
void	Delete ()
	Deletes the profile and removes it from CpuProfiler's list. More...

Detailed Description

CpuProfile contains a CPU profile in a form of top-down call tree (from main() down to functions that do all the work).

Definition at line 77 of file v8-profiler.h.

Member Function Documentation

Delete()

void v8::CpuProfile::Delete

(

)

Deletes the profile and removes it from CpuProfiler's list.

All pointers to nodes previously returned become invalid.

Definition at line 7118 of file api.cc.

                        {
  i::Isolate* isolate = i::Isolate::Current();
  i::CpuProfiler* profiler = isolate->cpu_profiler();
  DCHECK(profiler != NULL);
  profiler->DeleteProfile(reinterpret_cast<i::CpuProfile*>(this));
}

References v8::internal::Isolate::cpu_profiler(), DCHECK, NULL, and profiler().

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GetEndTime()

int64_t v8::CpuProfile::GetEndTime

(

)

const

Returns time when the profile recording was stopped (in microseconds) since some unspecified starting point.

The point is equal to the starting point used by GetStartTime.

Definition at line 7159 of file api.cc.

                                     {
  const i::CpuProfile* profile = reinterpret_cast<const i::CpuProfile*>(this);
  return (profile->end_time() - base::TimeTicks()).InMicroseconds();
}

References v8::internal::CpuProfile::end_time().

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GetSample()

const CpuProfileNode * v8::CpuProfile::GetSample

(

int

index

)

const

Returns profile node corresponding to the top frame the sample at the given index.

Definition at line 7140 of file api.cc.

                                                           {
  const i::CpuProfile* profile = reinterpret_cast<const i::CpuProfile*>(this);
  return reinterpret_cast<const CpuProfileNode*>(profile->sample(index));
}

References v8::internal::CpuProfile::sample().

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GetSamplesCount()

int v8::CpuProfile::GetSamplesCount

(

)

const

Returns number of samples recorded.

The samples are not recorded unless |record_samples| parameter of CpuProfiler::StartCpuProfiling is true.

Definition at line 7165 of file api.cc.

                                      {
  return reinterpret_cast<const i::CpuProfile*>(this)->samples_count();
}

GetSampleTimestamp()

int64_t v8::CpuProfile::GetSampleTimestamp

(

int

index

)

const

Returns the timestamp of the sample.

The timestamp is the number of microseconds since some unspecified starting point. The point is equal to the starting point used by GetStartTime.

Definition at line 7146 of file api.cc.

                                                      {
  const i::CpuProfile* profile = reinterpret_cast<const i::CpuProfile*>(this);
  return (profile->sample_timestamp(index) - base::TimeTicks())
      .InMicroseconds();
}

References v8::internal::CpuProfile::sample_timestamp().

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GetStartTime()

int64_t v8::CpuProfile::GetStartTime

(

)

const

Returns time when the profile recording was started (in microseconds) since some unspecified starting point.

Definition at line 7153 of file api.cc.

                                       {
  const i::CpuProfile* profile = reinterpret_cast<const i::CpuProfile*>(this);
  return (profile->start_time() - base::TimeTicks()).InMicroseconds();
}

References v8::internal::CpuProfile::start_time().

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GetTitle()

Handle< String > v8::CpuProfile::GetTitle

(

)

const

Returns CPU profile title.

Definition at line 7126 of file api.cc.

                                          {
  i::Isolate* isolate = i::Isolate::Current();
  const i::CpuProfile* profile = reinterpret_cast<const i::CpuProfile*>(this);
  return ToApiHandle<String>(isolate->factory()->InternalizeUtf8String(
      profile->title()));
}

References v8::internal::Isolate::factory(), and v8::internal::CpuProfile::title().

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GetTopDownRoot()

const CpuProfileNode * v8::CpuProfile::GetTopDownRoot

(

)

const

Returns the root node of the top down call tree.

Definition at line 7134 of file api.cc.

                                                       {
  const i::CpuProfile* profile = reinterpret_cast<const i::CpuProfile*>(this);
  return reinterpret_cast<const CpuProfileNode*>(profile->top_down()->root());
}

References v8::internal::ProfileTree::root(), and v8::internal::CpuProfile::top_down().

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

• /mnt/V8SourceCode/include/v8-profiler.h
• /mnt/V8SourceCode/src/api.cc