v8::internal::Log Class Reference

#include <log-utils.h>

Collaboration diagram for v8::internal::Log:

Classes
class	BASE_EMBEDDED

Public Member Functions
void	Initialize (const char *log_file_name)
void	stop ()
FILE *	Close ()
bool	IsEnabled ()

Static Public Member Functions
static bool	InitLogAtStart ()

Static Public Attributes
static const int	kMessageBufferSize = 2048
static const char *const	kLogToTemporaryFile = "&"
static const char *const	kLogToConsole = "-"

Private Member Functions
	Log (Logger *logger)
void	OpenStdout ()
void	OpenFile (const char *name)
void	OpenTemporaryFile ()
int	WriteToFile (const char *msg, int length)

Private Attributes
bool	is_stopped_
FILE *	output_handle_
base::Mutex	mutex_
char *	message_buffer_
Logger *	logger_

Friends
class	Logger

Detailed Description

Definition at line 16 of file log-utils.h.

Constructor & Destructor Documentation

Log()

v8::internal::Log::Log ( Logger *  logger )

explicitprivate

Definition at line 18 of file log-utils.cc.

  : is_stopped_(false),
    output_handle_(NULL),
    message_buffer_(NULL),
    logger_(logger) {
}

Member Function Documentation

Close()

FILE * v8::internal::Log::Close

(

)

Definition at line 74 of file log-utils.cc.

                 {
  FILE* result = NULL;
  if (output_handle_ != NULL) {
    if (strcmp(FLAG_logfile, kLogToTemporaryFile) != 0) {
      fclose(output_handle_);
    } else {
      result = output_handle_;
    }
  }
  output_handle_ = NULL;
 
  DeleteArray(message_buffer_);
  message_buffer_ = NULL;
 
  is_stopped_ = false;
  return result;
}

References v8::internal::DeleteArray(), is_stopped_, kLogToTemporaryFile, message_buffer_, NULL, and output_handle_.

Referenced by v8::internal::Logger::TearDown().

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Initialize()

void v8::internal::Log::Initialize

(

const char *

log_file_name

)

Definition at line 26 of file log-utils.cc.

                                              {
  message_buffer_ = NewArray<char>(kMessageBufferSize);
 
  // --log-all enables all the log flags.
  if (FLAG_log_all) {
    FLAG_log_api = true;
    FLAG_log_code = true;
    FLAG_log_gc = true;
    FLAG_log_suspect = true;
    FLAG_log_handles = true;
    FLAG_log_regexp = true;
    FLAG_log_internal_timer_events = true;
  }
 
  // --prof implies --log-code.
  if (FLAG_prof) FLAG_log_code = true;
 
  // If we're logging anything, we need to open the log file.
  if (Log::InitLogAtStart()) {
    if (strcmp(log_file_name, kLogToConsole) == 0) {
      OpenStdout();
    } else if (strcmp(log_file_name, kLogToTemporaryFile) == 0) {
      OpenTemporaryFile();
    } else {
      OpenFile(log_file_name);
    }
  }
}

References InitLogAtStart(), kLogToConsole, kLogToTemporaryFile, kMessageBufferSize, message_buffer_, OpenFile(), OpenStdout(), and OpenTemporaryFile().

Referenced by v8::internal::Logger::SetUp().

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InitLogAtStart()

static bool v8::internal::Log::InitLogAtStart ( )

inlinestatic

Definition at line 24 of file log-utils.h.

                               {
    return FLAG_log || FLAG_log_api || FLAG_log_code || FLAG_log_gc
        || FLAG_log_handles || FLAG_log_suspect || FLAG_log_regexp
        || FLAG_ll_prof || FLAG_perf_basic_prof || FLAG_perf_jit_prof
        || FLAG_log_internal_timer_events;
  }

Referenced by Initialize(), and v8::internal::Logger::SetUp().

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IsEnabled()

bool v8::internal::Log::IsEnabled ( )

inline

Definition at line 37 of file log-utils.h.

                   {
    return !is_stopped_ && output_handle_ != NULL;
  }

References is_stopped_, NULL, and output_handle_.

Referenced by v8::internal::Logger::ApiEntryCall(), v8::internal::Logger::ApiEvent(), v8::internal::Logger::ApiIndexedPropertyAccess(), v8::internal::Logger::ApiIndexedSecurityCheck(), v8::internal::Logger::ApiNamedPropertyAccess(), v8::internal::Logger::ApiNamedSecurityCheck(), v8::internal::Logger::ApiObjectAccess(), v8::internal::Logger::CallbackEventInternal(), v8::internal::Logger::CodeCreateEvent(), v8::internal::Logger::CodeDeleteEvent(), v8::internal::Logger::CodeDeoptEvent(), v8::internal::Logger::CodeDisableOptEvent(), v8::internal::Logger::CodeMovingGCEvent(), v8::internal::Logger::CurrentTimeEvent(), v8::internal::Logger::DebugEvent(), v8::internal::Logger::DebugTag(), v8::internal::Logger::DeleteEvent(), v8::internal::Logger::HandleEvent(), v8::internal::Logger::HeapSampleBeginEvent(), v8::internal::Logger::HeapSampleEndEvent(), v8::internal::Logger::HeapSampleItemEvent(), v8::internal::Logger::MoveEventInternal(), v8::internal::Logger::NewEvent(), OpenFile(), OpenStdout(), OpenTemporaryFile(), v8::internal::Logger::ProfilerBeginEvent(), v8::internal::Logger::RegExpCodeCreateEvent(), v8::internal::Logger::RegExpCompileEvent(), v8::internal::Logger::ResourceEvent(), v8::internal::Logger::SharedLibraryEvent(), v8::internal::Logger::SnapshotPositionEvent(), v8::internal::Logger::StopProfiler(), v8::internal::Logger::SuspectReadEvent(), v8::internal::Logger::TickEvent(), v8::internal::Logger::TimerEvent(), v8::internal::Logger::UncheckedIntEvent(), v8::internal::Logger::UncheckedIntPtrTEvent(), and v8::internal::Logger::UncheckedStringEvent().

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OpenFile()

void v8::internal::Log::OpenFile ( const char *  name )

private

Definition at line 68 of file log-utils.cc.

                                   {
  DCHECK(!IsEnabled());
  output_handle_ = base::OS::FOpen(name, base::OS::LogFileOpenMode);
}

References DCHECK, v8::base::OS::FOpen(), IsEnabled(), v8::base::OS::LogFileOpenMode, name, and output_handle_.

Referenced by Initialize().

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OpenStdout()

void v8::internal::Log::OpenStdout ( )

private

Definition at line 56 of file log-utils.cc.

                     {
  DCHECK(!IsEnabled());
  output_handle_ = stdout;
}

References DCHECK, IsEnabled(), and output_handle_.

Referenced by Initialize().

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OpenTemporaryFile()

void v8::internal::Log::OpenTemporaryFile ( )

private

Definition at line 62 of file log-utils.cc.

                            {
  DCHECK(!IsEnabled());
  output_handle_ = base::OS::OpenTemporaryFile();
}

References DCHECK, IsEnabled(), v8::base::OS::OpenTemporaryFile(), and output_handle_.

Referenced by Initialize().

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stop()

void v8::internal::Log::stop ( )

inline

Definition at line 22 of file log-utils.h.

{ is_stopped_ = true; }

References is_stopped_.

WriteToFile()

int v8::internal::Log::WriteToFile ( const char *  msg, int  length  )

inlineprivate

Definition at line 105 of file log-utils.h.

                                               {
    DCHECK(output_handle_ != NULL);
    size_t rv = fwrite(msg, 1, length, output_handle_);
    DCHECK(static_cast<size_t>(length) == rv);
    USE(rv);
    fflush(output_handle_);
    return length;
  }

References DCHECK, NULL, output_handle_, and USE().

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Friends And Related Function Documentation

Logger

friend class Logger

friend

Definition at line 131 of file log-utils.h.

Member Data Documentation

is_stopped_

bool v8::internal::Log::is_stopped_

private

Definition at line 115 of file log-utils.h.

Referenced by Close(), IsEnabled(), and stop().

kLogToConsole

const char *const v8::internal::Log::kLogToConsole = "-"

static

Definition at line 47 of file log-utils.h.

Referenced by Initialize().

kLogToTemporaryFile

const char *const v8::internal::Log::kLogToTemporaryFile = "&"

static

Definition at line 46 of file log-utils.h.

Referenced by Close(), and Initialize().

kMessageBufferSize

const int v8::internal::Log::kMessageBufferSize = 2048

static

Definition at line 42 of file log-utils.h.

Referenced by Initialize().

logger_

Logger* v8::internal::Log::logger_

private

Definition at line 129 of file log-utils.h.

message_buffer_

char* v8::internal::Log::message_buffer_

private

Definition at line 127 of file log-utils.h.

Referenced by Close(), and Initialize().

mutex_

base::Mutex v8::internal::Log::mutex_

private

Definition at line 123 of file log-utils.h.

output_handle_

FILE* v8::internal::Log::output_handle_

private

Definition at line 119 of file log-utils.h.

Referenced by Close(), IsEnabled(), OpenFile(), OpenStdout(), OpenTemporaryFile(), and WriteToFile().

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

• /mnt/V8SourceCode/src/log-utils.h
• /mnt/V8SourceCode/src/log-utils.cc