#include <counters.h>

Collaboration diagram for v8::internal::StatsCounter:

Public Member Functions
	StatsCounter ()

	StatsCounter (Isolate isolate, const char name)

void	Set (int value)

void	Increment ()

void	Increment (int value)

void	Decrement ()

void	Decrement (int value)

bool	Enabled ()

int *	GetInternalPointer ()

void	Reset ()

Protected Member Functions
int *	GetPtr ()

Private Member Functions
int *	FindLocationInStatsTable () const

Private Attributes
Isolate *	isolate_

const char *	name_

int *	ptr_

bool	lookup_done_

Detailed Description

Definition at line 96 of file counters.h.

Constructor & Destructor Documentation

◆ StatsCounter() [1/2]

v8::internal::StatsCounter::StatsCounter ( )

inline

Definition at line 98 of file counters.h.

98 { }

◆ StatsCounter() [2/2]

v8::internal::StatsCounter::StatsCounter	(	Isolate *	isolate,
		const char *	name
	)

inlineexplicit

Definition at line 99 of file counters.h.

100 : isolate_(isolate), name_(name), ptr_(NULL), lookup_done_(false) { }

v8::internal::StatsCounter::ptr_

int * ptr_

Definition: counters.h:163

v8::internal::StatsCounter::name_

const char * name_

Definition: counters.h:162

v8::internal::StatsCounter::isolate_

Isolate * isolate_

Definition: counters.h:161

v8::internal::StatsCounter::lookup_done_

bool lookup_done_

Definition: counters.h:164

name

enable harmony numeric enable harmony object literal extensions Optimize object Array DOM strings and string trace pretenuring decisions of HAllocate instructions Enables optimizations which favor memory size over execution speed maximum source size in bytes considered for a single inlining maximum cumulative number of AST nodes considered for inlining trace the tracking of allocation sites deoptimize every n garbage collections perform array bounds checks elimination analyze liveness of environment slots and zap dead values flushes the cache of optimized code for closures on every GC allow uint32 values on optimize frames if they are used only in safe operations track concurrent recompilation artificial compilation delay in ms do not emit check maps for constant values that have a leaf deoptimize the optimized code if the layout of the maps changes enable context specialization in TurboFan execution budget before interrupt is triggered max percentage of megamorphic generic ICs to allow optimization enable use of SAHF instruction if enable use of VFP3 instructions if available enable use of NEON instructions if enable use of SDIV and UDIV instructions if enable use of MLS instructions if enable loading bit constant by means of movw movt instruction enable unaligned accesses for enable use of d16 d31 registers on ARM this requires VFP3 force all emitted branches to be in long enable alignment of csp to bytes on platforms which prefer the register to always be expose gc extension under the specified name show built in functions in stack traces use random jit cookie to mask large constants minimum length for automatic enable preparsing CPU profiler sampling interval in microseconds trace out of bounds accesses to external arrays default size of stack region v8 is allowed to maximum length of function source code printed in a stack trace min size of a semi the new space consists of two semi spaces print one trace line following each garbage collection do not print trace line after scavenger collection print cumulative GC statistics in name

Definition: flag-definitions.h:504

NULL

enable harmony numeric enable harmony object literal extensions Optimize object Array DOM strings and string trace pretenuring decisions of HAllocate instructions Enables optimizations which favor memory size over execution speed maximum source size in bytes considered for a single inlining maximum cumulative number of AST nodes considered for inlining trace the tracking of allocation sites deoptimize every n garbage collections perform array bounds checks elimination analyze liveness of environment slots and zap dead values flushes the cache of optimized code for closures on every GC allow uint32 values on optimize frames if they are used only in safe operations track concurrent recompilation artificial compilation delay in ms do not emit check maps for constant values that have a leaf deoptimize the optimized code if the layout of the maps changes enable context specialization in TurboFan execution budget before interrupt is triggered max percentage of megamorphic generic ICs to allow optimization enable use of SAHF instruction if enable use of VFP3 instructions if available enable use of NEON instructions if enable use of SDIV and UDIV instructions if enable use of MLS instructions if enable loading bit constant by means of movw movt instruction enable unaligned accesses for enable use of d16 d31 registers on ARM this requires VFP3 force all emitted branches to be in long enable alignment of csp to bytes on platforms which prefer the register to always be NULL

Definition: flag-definitions.h:407

Member Function Documentation

◆ Decrement() [1/2]

void v8::internal::StatsCounter::Decrement ( )

inline

Definition at line 121 of file counters.h.

                    {
     int* loc = GetPtr();
     if (loc) (*loc)--;
   }

References GetPtr().

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◆ Decrement() [2/2]

void v8::internal::StatsCounter::Decrement ( int value )

inline

Definition at line 126 of file counters.h.

                             {
     int* loc = GetPtr();
     if (loc) (*loc) -= value;
   }

References GetPtr().

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◆ Enabled()

bool v8::internal::StatsCounter::Enabled ( )

inline

Definition at line 133 of file counters.h.

                  {
     return GetPtr() != NULL;
   }

References GetPtr(), and NULL.

Referenced by v8::internal::AddCounter(), v8::internal::HGraphBuilder::AddIncrementCounter(), and v8::internal::GetInternalPointer().

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◆ FindLocationInStatsTable()

int * v8::internal::StatsCounter::FindLocationInStatsTable ( ) const

private

Definition at line 20 of file counters.cc.

                                                   {
   return isolate_->stats_table()->FindLocation(name_);
 }

References v8::internal::StatsTable::FindLocation(), isolate_, name_, and v8::internal::Isolate::stats_table().

Referenced by GetPtr().

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◆ GetInternalPointer()

int* v8::internal::StatsCounter::GetInternalPointer ( )

inline

Definition at line 140 of file counters.h.

                             {
     int* loc = GetPtr();
     DCHECK(loc != NULL);
     return loc;
   }

References DCHECK, GetPtr(), and NULL.

Referenced by v8::internal::AddCounter(), and v8::internal::GetInternalPointer().

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◆ GetPtr()

int* v8::internal::StatsCounter::GetPtr ( )

inlineprotected

Definition at line 151 of file counters.h.

                 {
     if (lookup_done_) return ptr_;
     lookup_done_ = true;
     ptr_ = FindLocationInStatsTable();
     return ptr_;
   }

References FindLocationInStatsTable(), lookup_done_, and ptr_.

Referenced by Decrement(), Enabled(), GetInternalPointer(), Increment(), and Set().

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◆ Increment() [1/2]

void v8::internal::StatsCounter::Increment ( )

inline

Definition at line 109 of file counters.h.

                    {
     int* loc = GetPtr();
     if (loc) (*loc)++;
   }

References GetPtr().

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◆ Increment() [2/2]

void v8::internal::StatsCounter::Increment ( int value )

inline

Definition at line 114 of file counters.h.

                             {
     int* loc = GetPtr();
     if (loc)
       (*loc) += value;
   }

References GetPtr().

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◆ Reset()

void v8::internal::StatsCounter::Reset ( )

inline

Definition at line 147 of file counters.h.

147 { lookup_done_ = false; }

References lookup_done_.

◆ Set()

void v8::internal::StatsCounter::Set ( int value )

inline

Definition at line 103 of file counters.h.

                       {
     int* loc = GetPtr();
     if (loc) *loc = value;
   }

References GetPtr().

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Member Data Documentation

◆ isolate_

Isolate* v8::internal::StatsCounter::isolate_

private

Definition at line 161 of file counters.h.

Referenced by FindLocationInStatsTable().

◆ lookup_done_

bool v8::internal::StatsCounter::lookup_done_

private

Definition at line 164 of file counters.h.

Referenced by GetPtr(), and Reset().

◆ name_

const char* v8::internal::StatsCounter::name_

private

Definition at line 162 of file counters.h.

Referenced by FindLocationInStatsTable().

◆ ptr_

int* v8::internal::StatsCounter::ptr_

private

Definition at line 163 of file counters.h.

Referenced by GetPtr().

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

/mnt/V8SourceCode/src/counters.h
/mnt/V8SourceCode/src/counters.cc

Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ StatsCounter() [1/2]

◆ StatsCounter() [2/2]

Member Function Documentation

◆ Decrement() [1/2]

◆ Decrement() [2/2]

◆ Enabled()

◆ FindLocationInStatsTable()

◆ GetInternalPointer()

◆ GetPtr()

◆ Increment() [1/2]

◆ Increment() [2/2]

◆ Reset()

◆ Set()

Member Data Documentation

◆ isolate_

◆ lookup_done_

◆ name_

◆ ptr_