macros.h File Reference

#include <cstring>
#include "include/v8stdint.h"
#include "src/base/build_config.h"
#include "src/base/compiler-specific.h"
#include "src/base/logging.h"

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Classes
struct	CompileAssert< bool >
class	StaticAssertion< true >
class	StaticAssertionHelper< int >

Macros
#define	OFFSET_OF(type, field)    (reinterpret_cast<intptr_t>(&(reinterpret_cast<type*>(4)->field)) - 4)
#define	ARRAYSIZE_UNSAFE(a)
#define	arraysize(array)   (sizeof(ArraySizeHelper(array)))
#define	COMPILE_ASSERT(expr, msg)
#define	DISALLOW_COPY_AND_ASSIGN(TypeName)
#define	DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName)
#define	INLINE(declarator)   V8_INLINE declarator
#define	NO_INLINE(declarator)   V8_NOINLINE declarator
#define	MUST_USE_RESULT   WARN_UNUSED_RESULT
#define	DISABLE_ASAN
#define	V8_IMMEDIATE_CRASH()   ((void(*)())0)()
#define	SEMI_STATIC_JOIN(a, b)   SEMI_STATIC_JOIN_HELPER(a, b)
#define	SEMI_STATIC_JOIN_HELPER(a, b)   a##b
#define	STATIC_ASSERT(test)
#define	IS_POWER_OF_TWO(x)   ((x) != 0 && (((x) & ((x) - 1)) == 0))
#define	V8_UINT64_C(x)   (x ## ULL)
#define	V8_INT64_C(x)   (x ## LL)
#define	V8_INTPTR_C(x)   (x)
#define	V8_PTR_PREFIX   ""
#define	V8PRIxPTR   V8_PTR_PREFIX "x"
#define	V8PRIdPTR   V8_PTR_PREFIX "d"
#define	V8PRIuPTR   V8_PTR_PREFIX "u"
#define	V8_2PART_UINT64_C(a, b)   (((static_cast<uint64_t>(a) << 32) + 0x##b##u))

Functions
template<typename T , size_t N>
char(&	ArraySizeHelper (T(&array)[N]))[N]
template<typename T , size_t N>
char(&	ArraySizeHelper (const T(&array)[N]))[N]
template<class Dest , class Source >
Dest	bit_cast (Source const &source)
template<typename T >
void	USE (T)
template<typename T >
intptr_t	OffsetFrom (T x)
template<typename T >
T	AddressFrom (intptr_t x)
template<typename T >
T	RoundDown (T x, intptr_t m)
template<typename T >
T	RoundUp (T x, intptr_t m)

Macro Definition Documentation

arraysize

#define arraysize

(

array

)

(sizeof(ArraySizeHelper(array)))

Definition at line 86 of file macros.h.

ARRAYSIZE_UNSAFE

#define ARRAYSIZE_UNSAFE

(

a

)

Value:

  ((sizeof(a) / sizeof(*(a))) / \
   static_cast<size_t>(!(sizeof(a) % sizeof(*(a)))))

Definition at line 62 of file macros.h.

COMPILE_ASSERT

#define COMPILE_ASSERT	(		expr,
			msg
	)

Value:

  typedef CompileAssert<static_cast<bool>(expr)> \
      msg[static_cast<bool>(expr) ? 1 : -1] ALLOW_UNUSED

Definition at line 131 of file macros.h.

DISABLE_ASAN

#define DISABLE_ASAN

Definition at line 280 of file macros.h.

DISALLOW_COPY_AND_ASSIGN

#define DISALLOW_COPY_AND_ASSIGN

(

TypeName

)

Value:

  TypeName(const TypeName&) V8_DELETE;      \
  void operator=(const TypeName&) V8_DELETE

Definition at line 244 of file macros.h.

DISALLOW_IMPLICIT_CONSTRUCTORS

#define DISALLOW_IMPLICIT_CONSTRUCTORS

(

TypeName

)

Value:

  TypeName() V8_DELETE;                           \
  DISALLOW_COPY_AND_ASSIGN(TypeName)

Definition at line 255 of file macros.h.

INLINE

#define INLINE

(

declarator

)

V8_INLINE declarator

Definition at line 261 of file macros.h.

IS_POWER_OF_TWO

#define IS_POWER_OF_TWO

(

x

)

((x) != 0 && (((x) & ((x) - 1)) == 0))

Definition at line 325 of file macros.h.

MUST_USE_RESULT

#define MUST_USE_RESULT   WARN_UNUSED_RESULT

Definition at line 266 of file macros.h.

NO_INLINE

#define NO_INLINE

(

declarator

)

V8_NOINLINE declarator

Definition at line 262 of file macros.h.

OFFSET_OF

#define OFFSET_OF	(		type,
			field
	)		(reinterpret_cast<intptr_t>(&(reinterpret_cast<type*>(4)->field)) - 4)

Definition at line 22 of file macros.h.

SEMI_STATIC_JOIN

#define SEMI_STATIC_JOIN	(		a,
			b
	)		SEMI_STATIC_JOIN_HELPER(a, b)

Definition at line 303 of file macros.h.

SEMI_STATIC_JOIN_HELPER

#define SEMI_STATIC_JOIN_HELPER	(		a,
			b
	)		a##b

Definition at line 304 of file macros.h.

STATIC_ASSERT

#define STATIC_ASSERT

(

test

)

Value:

  typedef                                                                     \
    StaticAssertionHelper<sizeof(StaticAssertion<static_cast<bool>((test))>)> \
    SEMI_STATIC_JOIN(__StaticAssertTypedef__, __LINE__) ALLOW_UNUSED

Definition at line 311 of file macros.h.

V8_2PART_UINT64_C

#define V8_2PART_UINT64_C	(		a,
			b
	)		(((static_cast<uint64_t>(a) << 32) + 0x##b##u))

Definition at line 376 of file macros.h.

V8_IMMEDIATE_CRASH

#define V8_IMMEDIATE_CRASH

(

)

((void(*)())0)()

Definition at line 287 of file macros.h.

V8_INT64_C

#define V8_INT64_C

(

x

)

(x ## LL)

Definition at line 358 of file macros.h.

V8_INTPTR_C

#define V8_INTPTR_C

(

x

)

(x)

Definition at line 359 of file macros.h.

V8_PTR_PREFIX

#define V8_PTR_PREFIX   ""

Definition at line 360 of file macros.h.

V8_UINT64_C

#define V8_UINT64_C

(

x

)

(x ## ULL)

Definition at line 357 of file macros.h.

V8PRIdPTR

#define V8PRIdPTR   V8_PTR_PREFIX "d"

Definition at line 364 of file macros.h.

V8PRIuPTR

#define V8PRIuPTR   V8_PTR_PREFIX "u"

Definition at line 365 of file macros.h.

V8PRIxPTR

#define V8PRIxPTR   V8_PTR_PREFIX "x"

Definition at line 363 of file macros.h.

Function Documentation

AddressFrom()

template<typename T >

T AddressFrom ( intptr_t  x )

inline

Definition at line 392 of file macros.h.

                                 {
  return static_cast<T>(static_cast<T>(0) + x);
}

References T.

ArraySizeHelper() [1/2]

template<typename T , size_t N>

char(& ArraySizeHelper

(

const T(&)

array[N]

)

)[N]

ArraySizeHelper() [2/2]

template<typename T , size_t N>

char(& ArraySizeHelper

(

T(&)

array[N]

)

)[N]

bit_cast()

template<class Dest , class Source >

Dest bit_cast ( Source const &  source )

inline

Definition at line 233 of file macros.h.

                                              {
  COMPILE_ASSERT(sizeof(Dest) == sizeof(Source), VerifySizesAreEqual);
 
  Dest dest;
  memcpy(&dest, &source, sizeof(dest));
  return dest;
}

References COMPILE_ASSERT.

OffsetFrom()

template<typename T >

intptr_t OffsetFrom ( T  x )

inline

Definition at line 383 of file macros.h.

                                {
  return x - static_cast<T>(0);
}

References T.

Referenced by v8::internal::EnsureDoubleAligned(), v8::internal::MemoryChunk::FromAddress(), v8::internal::MemoryChunk::FromAnyPointerAddress(), v8::internal::BASE_EMBEDDED< Visitor >::id(), v8::internal::Page::INLINE(), v8::internal::NewSpace::INLINE(), v8::internal::IsAddressAligned(), v8::internal::Page::IsAlignedToPageSize(), v8::internal::SkipList::RegionNumber(), RoundDown(), v8::internal::Foreign::set_foreign_address(), and v8::internal::WrapFrameId().

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RoundDown()

template<typename T >

T RoundDown ( T  x, intptr_t  m  )

inline

Definition at line 399 of file macros.h.

                                    {
  DCHECK(IS_POWER_OF_TWO(m));
  return AddressFrom<T>(OffsetFrom(x) & -m);
}

References DCHECK, IS_POWER_OF_TWO, and OffsetFrom().

Referenced by v8::internal::Zone::NewExpand(), v8::internal::PagedSpace::PagedSpace(), v8::internal::Space::RoundSizeDownToObjectAlignment(), v8::internal::MapSpace::RoundSizeDownToObjectAlignment(), v8::internal::CellSpace::RoundSizeDownToObjectAlignment(), v8::internal::PropertyCellSpace::RoundSizeDownToObjectAlignment(), and v8::internal::SemiSpace::SetUp().

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RoundUp()

template<typename T >

T RoundUp ( T  x, intptr_t  m  )

inline

Definition at line 407 of file macros.h.

                                  {
  return RoundDown<T>(static_cast<T>(x + m - 1), m);
}

References T.

Referenced by v8::base::OS::Allocate(), and v8::base::VirtualMemory::VirtualMemory().

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USE()

template<typename T >

void USE ( T  )

inline

Definition at line 322 of file macros.h.

{ }

Referenced by v8::internal::OutputStreamWriter::AddNumberImpl(), v8::internal::Dictionary< Derived, Shape, Key >::AtPut(), v8::internal::HOptimizedGraphBuilder::BindIfLive(), v8::internal::Assembler::BitN(), v8::internal::BUILTIN(), v8::internal::RegExpImpl::CompileIrregexp(), v8::internal::OptimizingCompilerThread::CompileNext(), v8::internal::ParserBase< Traits >::Consume(), v8::base::Thread::CreateThreadLocalKey(), v8::base::Thread::DeleteThreadLocalKey(), v8::internal::Deoptimizer::DoComputeJSFrame(), v8::internal::Deoptimizer::DoComputeOutputFrames(), v8::internal::DoubleToPrecisionCString(), v8::internal::EmitUseLookupTable(), v8::base::OS::Free(), v8::internal::MemoryAllocator::FreeMemory(), v8::internal::Deoptimizer::TableEntryGenerator::GeneratePrologue(), v8::internal::OptimizedFrame::GetInlineCount(), v8::internal::JSReceiver::GetKeys(), v8::internal::Handle< T >::Handle(), v8::internal::HOptimizedGraphBuilder::HandleGlobalVariableAssignment(), v8::internal::HeapSnapshot::HeapSnapshot(), v8::internal::Assembler::ImmR(), v8::internal::Assembler::ImmRotate(), v8::internal::Assembler::ImmS(), v8::internal::Assembler::ImmSetBits(), v8::internal::SimulatorStack::JsLimitFromCLimit(), v8::internal::Assembler::LoadPairNonTemporalOpFor(), v8::internal::Assembler::LoadPairOpFor(), v8::internal::LowLevelLogger::LogWriteBytes(), v8::internal::HOptimizedGraphBuilder::LookupAndMakeLive(), v8::TypeSwitch::match(), v8::internal::MaybeHandle< T >::MaybeHandle(), v8::internal::MemsetPointer(), v8::internal::compiler::Instruction::New(), v8::internal::Parser::ParseExportDeclaration(), v8::internal::Parser::ParseModuleUrl(), v8::internal::JSObject::PrepareSlowElementsForSort(), v8::base::VirtualMemory::Release(), v8::internal::SamplerThread::RemoveActiveSampler(), v8::internal::RUNTIME_FUNCTION(), v8::internal::TypeFeedbackOracle::SetInfo(), v8::Function::SetName(), v8::base::Thread::SetThreadLocal(), v8::internal::StoreBuffer::SetUp(), v8::base::Thread::Start(), v8::internal::Assembler::StorePairNonTemporalOpFor(), v8::internal::Assembler::StorePairOpFor(), v8::internal::Unique< T >::Unique(), v8::internal::SharedFunctionInfo::VerifyBailoutId(), v8::base::VirtualMemory::VirtualMemory(), v8::internal::Log::WriteToFile(), v8::base::Thread::YieldCPU(), and v8::base::VirtualMemory::~VirtualMemory().

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