v8::internal::CpuProfilesCollection Class Reference

#include <profile-generator.h>

Collaboration diagram for v8::internal::CpuProfilesCollection:

Public Member Functions
	CpuProfilesCollection (Heap *heap)
	~CpuProfilesCollection ()
bool	StartProfiling (const char *title, bool record_samples)
CpuProfile *	StopProfiling (const char *title)
List< CpuProfile * > *	profiles ()
const char *	GetName (Name *name)
const char *	GetName (int args_count)
const char *	GetFunctionName (Name *name)
const char *	GetFunctionName (const char *name)
bool	IsLastProfile (const char *title)
void	RemoveProfile (CpuProfile *profile)
CodeEntry *	NewCodeEntry (Logger::LogEventsAndTags tag, const char *name, const char *name_prefix=CodeEntry::kEmptyNamePrefix, const char *resource_name=CodeEntry::kEmptyResourceName, int line_number=v8::CpuProfileNode::kNoLineNumberInfo, int column_number=v8::CpuProfileNode::kNoColumnNumberInfo)
void	AddPathToCurrentProfiles (base::TimeTicks timestamp, const Vector< CodeEntry * > &path)

Static Public Attributes
static const int	kMaxSimultaneousProfiles = 100

Private Member Functions
	DISALLOW_COPY_AND_ASSIGN (CpuProfilesCollection)

Private Attributes
StringsStorage	function_and_resource_names_
List< CodeEntry * >	code_entries_
List< CpuProfile * >	finished_profiles_
List< CpuProfile * >	current_profiles_
base::Semaphore	current_profiles_semaphore_

Detailed Description

Definition at line 256 of file profile-generator.h.

Constructor & Destructor Documentation

CpuProfilesCollection()

v8::internal::CpuProfilesCollection::CpuProfilesCollection ( Heap *  heap )

explicit

Definition at line 435 of file profile-generator.cc.

    : function_and_resource_names_(heap),
      current_profiles_semaphore_(1) {
}

~CpuProfilesCollection()

v8::internal::CpuProfilesCollection::~CpuProfilesCollection

(

)

Definition at line 451 of file profile-generator.cc.

                                              {
  finished_profiles_.Iterate(DeleteCpuProfile);
  current_profiles_.Iterate(DeleteCpuProfile);
  code_entries_.Iterate(DeleteCodeEntry);
}

References code_entries_, current_profiles_, v8::internal::DeleteCodeEntry(), v8::internal::DeleteCpuProfile(), and finished_profiles_.

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Member Function Documentation

AddPathToCurrentProfiles()

void v8::internal::CpuProfilesCollection::AddPathToCurrentProfiles	(	base::TimeTicks	timestamp,
		const Vector< CodeEntry * > &	path
	)

Definition at line 519 of file profile-generator.cc.

                                                             {
  // As starting / stopping profiles is rare relatively to this
  // method, we don't bother minimizing the duration of lock holding,
  // e.g. copying contents of the list to a local vector.
  current_profiles_semaphore_.Wait();
  for (int i = 0; i < current_profiles_.length(); ++i) {
    current_profiles_[i]->AddPath(timestamp, path);
  }
  current_profiles_semaphore_.Signal();
}

References current_profiles_, and current_profiles_semaphore_.

Referenced by v8::internal::ProfileGenerator::RecordTickSample().

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DISALLOW_COPY_AND_ASSIGN()

v8::internal::CpuProfilesCollection::DISALLOW_COPY_AND_ASSIGN ( CpuProfilesCollection  )

private

GetFunctionName() [1/2]

const char* v8::internal::CpuProfilesCollection::GetFunctionName ( const char *  name )

inline

Definition at line 273 of file profile-generator.h.

                                                {
    return function_and_resource_names_.GetFunctionName(name);
  }

References function_and_resource_names_, v8::internal::StringsStorage::GetFunctionName(), and name.

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GetFunctionName() [2/2]

const char* v8::internal::CpuProfilesCollection::GetFunctionName ( Name *  name )

inline

Definition at line 270 of file profile-generator.h.

                                          {
    return function_and_resource_names_.GetFunctionName(name);
  }

References function_and_resource_names_, v8::internal::StringsStorage::GetFunctionName(), and name.

Referenced by v8::internal::CpuProfiler::CodeCreateEvent().

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GetName() [1/2]

const char* v8::internal::CpuProfilesCollection::GetName ( int  args_count )

inline

Definition at line 267 of file profile-generator.h.

                                      {
    return function_and_resource_names_.GetName(args_count);
  }

References function_and_resource_names_, and v8::internal::StringsStorage::GetName().

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GetName() [2/2]

const char* v8::internal::CpuProfilesCollection::GetName ( Name *  name )

inline

Definition at line 264 of file profile-generator.h.

                                  {
    return function_and_resource_names_.GetName(name);
  }

References function_and_resource_names_, v8::internal::StringsStorage::GetName(), and name.

Referenced by v8::internal::CpuProfiler::CallbackEvent(), v8::internal::CpuProfiler::CodeCreateEvent(), v8::internal::CpuProfiler::GetterCallbackEvent(), v8::internal::CpuProfiler::RegExpCodeCreateEvent(), v8::internal::CpuProfiler::SetterCallbackEvent(), v8::internal::CpuProfiler::StartProfiling(), and v8::internal::CpuProfiler::StopProfiling().

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IsLastProfile()

bool v8::internal::CpuProfilesCollection::IsLastProfile

(

const char *

title

)

Definition at line 498 of file profile-generator.cc.

                                                           {
  // Called from VM thread, and only it can mutate the list,
  // so no locking is needed here.
  if (current_profiles_.length() != 1) return false;
  return StrLength(title) == 0
      || strcmp(current_profiles_[0]->title(), title) == 0;
}

References current_profiles_, and v8::internal::StrLength().

Referenced by v8::internal::CpuProfiler::StopProcessorIfLastProfile().

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NewCodeEntry()

CodeEntry * v8::internal::CpuProfilesCollection::NewCodeEntry	(	Logger::LogEventsAndTags	tag,
		const char *	name,
		const char *	name_prefix = CodeEntry::kEmptyNamePrefix,
		const char *	resource_name = CodeEntry::kEmptyResourceName,
		int	line_number = v8::CpuProfileNode::kNoLineNumberInfo,
		int	column_number = v8::CpuProfileNode::kNoColumnNumberInfo
	)

Definition at line 532 of file profile-generator.cc.

                         {
  CodeEntry* code_entry = new CodeEntry(tag,
                                        name,
                                        name_prefix,
                                        resource_name,
                                        line_number,
                                        column_number);
  code_entries_.Add(code_entry);
  return code_entry;
}

References code_entries_, and name.

Referenced by v8::internal::CpuProfiler::CallbackEvent(), v8::internal::CpuProfiler::CodeCreateEvent(), v8::internal::CpuProfiler::GetterCallbackEvent(), v8::internal::CpuProfiler::RegExpCodeCreateEvent(), and v8::internal::CpuProfiler::SetterCallbackEvent().

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profiles()

List<CpuProfile*>* v8::internal::CpuProfilesCollection::profiles ( )

inline

Definition at line 263 of file profile-generator.h.

{ return &finished_profiles_; }

References finished_profiles_.

Referenced by v8::internal::CpuProfiler::DeleteProfile(), v8::internal::CpuProfiler::GetProfile(), and v8::internal::CpuProfiler::GetProfilesCount().

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RemoveProfile()

void v8::internal::CpuProfilesCollection::RemoveProfile

(

CpuProfile *

profile

)

Definition at line 507 of file profile-generator.cc.

                                                             {
  // Called from VM thread for a completed profile.
  for (int i = 0; i < finished_profiles_.length(); i++) {
    if (profile == finished_profiles_[i]) {
      finished_profiles_.Remove(i);
      return;
    }
  }
  UNREACHABLE();
}

References finished_profiles_, and UNREACHABLE.

Referenced by v8::internal::CpuProfiler::DeleteProfile().

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StartProfiling()

bool v8::internal::CpuProfilesCollection::StartProfiling	(	const char *	title,
		bool	record_samples
	)

Definition at line 458 of file profile-generator.cc.

                                                                {
  current_profiles_semaphore_.Wait();
  if (current_profiles_.length() >= kMaxSimultaneousProfiles) {
    current_profiles_semaphore_.Signal();
    return false;
  }
  for (int i = 0; i < current_profiles_.length(); ++i) {
    if (strcmp(current_profiles_[i]->title(), title) == 0) {
      // Ignore attempts to start profile with the same title...
      current_profiles_semaphore_.Signal();
      // ... though return true to force it collect a sample.
      return true;
    }
  }
  current_profiles_.Add(new CpuProfile(title, record_samples));
  current_profiles_semaphore_.Signal();
  return true;
}

References current_profiles_, current_profiles_semaphore_, and kMaxSimultaneousProfiles.

Referenced by v8::internal::CpuProfiler::StartProfiling().

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StopProfiling()

CpuProfile * v8::internal::CpuProfilesCollection::StopProfiling

(

const char *

title

)

Definition at line 479 of file profile-generator.cc.

                                                                  {
  const int title_len = StrLength(title);
  CpuProfile* profile = NULL;
  current_profiles_semaphore_.Wait();
  for (int i = current_profiles_.length() - 1; i >= 0; --i) {
    if (title_len == 0 || strcmp(current_profiles_[i]->title(), title) == 0) {
      profile = current_profiles_.Remove(i);
      break;
    }
  }
  current_profiles_semaphore_.Signal();
 
  if (profile == NULL) return NULL;
  profile->CalculateTotalTicksAndSamplingRate();
  finished_profiles_.Add(profile);
  return profile;
}

References v8::internal::CpuProfile::CalculateTotalTicksAndSamplingRate(), current_profiles_, current_profiles_semaphore_, finished_profiles_, NULL, and v8::internal::StrLength().

Referenced by v8::internal::CpuProfiler::StopProfiling().

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Member Data Documentation

code_entries_

List<CodeEntry*> v8::internal::CpuProfilesCollection::code_entries_

private

Definition at line 296 of file profile-generator.h.

Referenced by NewCodeEntry(), and ~CpuProfilesCollection().

current_profiles_

List<CpuProfile*> v8::internal::CpuProfilesCollection::current_profiles_

private

Definition at line 300 of file profile-generator.h.

Referenced by AddPathToCurrentProfiles(), IsLastProfile(), StartProfiling(), StopProfiling(), and ~CpuProfilesCollection().

current_profiles_semaphore_

base::Semaphore v8::internal::CpuProfilesCollection::current_profiles_semaphore_

private

Definition at line 301 of file profile-generator.h.

Referenced by AddPathToCurrentProfiles(), StartProfiling(), and StopProfiling().

finished_profiles_

List<CpuProfile*> v8::internal::CpuProfilesCollection::finished_profiles_

private

Definition at line 297 of file profile-generator.h.

Referenced by profiles(), RemoveProfile(), StopProfiling(), and ~CpuProfilesCollection().

function_and_resource_names_

StringsStorage v8::internal::CpuProfilesCollection::function_and_resource_names_

private

Definition at line 295 of file profile-generator.h.

Referenced by GetFunctionName(), and GetName().

kMaxSimultaneousProfiles

const int v8::internal::CpuProfilesCollection::kMaxSimultaneousProfiles = 100

static

Definition at line 292 of file profile-generator.h.

Referenced by StartProfiling().

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

• /mnt/V8SourceCode/src/profile-generator.h
• /mnt/V8SourceCode/src/profile-generator.cc