V8 Class Reference

#include <v8.h>

Public Member Functions
	V8_DEPRECATED ("use size_t version", static void SetFlagsFromString(const char *str, int length))

Static Public Member Functions
static void	SetNativesDataBlob (StartupData *startup_blob)
static void	SetSnapshotDataBlob (StartupData *startup_blob)
static void	SetDcheckErrorHandler (DcheckErrorCallback that)
static void	SetFlagsFromString (const char *str)
static void	SetFlagsFromString (const char *str, size_t length)
static void	SetFlagsFromCommandLine (int *argc, char **argv, bool remove_flags)
static const char *	GetVersion ()
static bool	Initialize ()
static void	SetEntropySource (EntropySource source)
static void	SetReturnAddressLocationResolver (ReturnAddressLocationResolver return_address_resolver)
static bool	Dispose ()
static bool	InitializeICU (const char *icu_data_file=nullptr)
static bool	InitializeICUDefaultLocation (const char *exec_path, const char *icu_data_file=nullptr)
static void	InitializeExternalStartupData (const char *directory_path)
static void	InitializeExternalStartupData (const char *natives_blob, const char *snapshot_blob)
static void	InitializePlatform (Platform *platform)
static void	ShutdownPlatform ()
static bool	EnableWebAssemblyTrapHandler (bool use_v8_signal_handler)

Friends
template<class K , class V , class T >
class	PersistentValueMapBase
template<class T >
class	Global
template<class T >
class	Local
template<class T >
class	MaybeLocal
template<class T >
class	Maybe
template<class T >
class	TracedGlobal
template<class T >
class	WeakCallbackInfo
template<class T >
class	Eternal
template<class T >
class	PersistentBase
template<class T , class M >
class	Persistent
class	Context

Detailed Description

Container class for static utility functions.

Definition at line 8888 of file v8.h.

Member Function Documentation

Dispose()

static bool Dispose ( )

static

Releases any resources used by v8 and stops any utility threads that may be running. Note that disposing v8 is permanent, it cannot be reinitialized.

It should generally not be necessary to dispose v8 before exiting a process, this should happen automatically. It is only necessary to use if the process needs the resources taken up by v8.

EnableWebAssemblyTrapHandler()

static bool EnableWebAssemblyTrapHandler ( bool  use_v8_signal_handler )

static

Activate trap-based bounds checking for WebAssembly.

Parameters

use_v8_signal_handler

Whether V8 should install its own signal handler or rely on the embedder's.

GetVersion()

static const char* GetVersion ( )

static

Get the version string.

Initialize()

static bool Initialize ( )

static

Initializes V8. This function needs to be called before the first Isolate is created. It always returns true.

InitializeExternalStartupData() [1/2]

static void InitializeExternalStartupData ( const char *  directory_path )

static

Initialize the external startup data. The embedder only needs to invoke this method when external startup data was enabled in a build.

If V8 was compiled with the startup data in an external file, then V8 needs to be given those external files during startup. There are three ways to do this:

• InitializeExternalStartupData(const char*) This will look in the given directory for files "natives_blob.bin" and "snapshot_blob.bin" - which is what the default build calls them.
• InitializeExternalStartupData(const char*, const char*) As above, but will directly use the two given file names.
• Call SetNativesDataBlob, SetNativesDataBlob. This will read the blobs from the given data structures and will not perform any file IO.

InitializeExternalStartupData() [2/2]

static void InitializeExternalStartupData ( const char *  natives_blob, const char *  snapshot_blob  )

static

InitializeICU()

static bool InitializeICU ( const char *  icu_data_file = nullptr )

static

Initialize the ICU library bundled with V8. The embedder should only invoke this method when using the bundled ICU. Returns true on success.

If V8 was compiled with the ICU data in an external file, the location of the data file has to be provided.

InitializeICUDefaultLocation()

static bool InitializeICUDefaultLocation ( const char *  exec_path, const char *  icu_data_file = nullptr  )

static

Initialize the ICU library bundled with V8. The embedder should only invoke this method when using the bundled ICU. If V8 was compiled with the ICU data in an external file and when the default location of that file should be used, a path to the executable must be provided. Returns true on success.

The default is a file called icudtl.dat side-by-side with the executable.

Optionally, the location of the data file can be provided to override the default.

InitializePlatform()

static void InitializePlatform ( Platform *  platform )

static

Sets the v8::Platform to use. This should be invoked before V8 is initialized.

SetDcheckErrorHandler()

static void SetDcheckErrorHandler ( DcheckErrorCallback  that )

static

Set the callback to invoke in case of Dcheck failures.

SetEntropySource()

static void SetEntropySource ( EntropySource  source )

static

Allows the host application to provide a callback which can be used as a source of entropy for random number generators.

SetFlagsFromCommandLine()

static void SetFlagsFromCommandLine ( int *  argc, char **  argv, bool  remove_flags  )

static

Sets V8 flags from the command line.

SetFlagsFromString() [1/2]

static void SetFlagsFromString ( const char *  str )

static

Sets V8 flags from a string.

SetFlagsFromString() [2/2]

static void SetFlagsFromString ( const char *  str, size_t  length  )

static

SetNativesDataBlob()

static void SetNativesDataBlob ( StartupData *  startup_blob )

static

Hand startup data to V8, in case the embedder has chosen to build V8 with external startup data.

Note:

• By default the startup data is linked into the V8 library, in which case this function is not meaningful.
• If this needs to be called, it needs to be called before V8 tries to make use of its built-ins.
• To avoid unnecessary copies of data, V8 will point directly into the given data blob, so pretty please keep it around until V8 exit.
• Compression of the startup blob might be useful, but needs to handled entirely on the embedders' side.
• The call will abort if the data is invalid.

SetReturnAddressLocationResolver()

static void SetReturnAddressLocationResolver ( ReturnAddressLocationResolver  return_address_resolver )

static

Allows the host application to provide a callback that allows v8 to cooperate with a profiler that rewrites return addresses on stack.

SetSnapshotDataBlob()

static void SetSnapshotDataBlob ( StartupData *  startup_blob )

static

ShutdownPlatform()

static void ShutdownPlatform ( )

static

Clears all references to the v8::Platform. This should be invoked after V8 was disposed.

V8_DEPRECATED()

V8_DEPRECATED	(	"use size_t version"	,
		static void	SetFlagsFromStringconst char *str, int length
	)

Friends And Related Function Documentation

Context

friend class Context

friend

Definition at line 9112 of file v8.h.

Eternal

friend class Eternal

friend

Definition at line 9109 of file v8.h.

Global

friend class Global

friend

Definition at line 9099 of file v8.h.

Local

friend class Local

friend

Definition at line 9100 of file v8.h.

Maybe

friend class Maybe

friend

Definition at line 9104 of file v8.h.

Referenced by v8::Just().

MaybeLocal

friend class MaybeLocal

friend

Definition at line 9102 of file v8.h.

Persistent

friend class Persistent

friend

Definition at line 9111 of file v8.h.

PersistentBase

friend class PersistentBase

friend

Definition at line 9110 of file v8.h.

PersistentValueMapBase

friend class PersistentValueMapBase

friend

Definition at line 9093 of file v8.h.

TracedGlobal

friend class TracedGlobal

friend

Definition at line 9106 of file v8.h.

WeakCallbackInfo

friend class WeakCallbackInfo

friend

Definition at line 9108 of file v8.h.

---

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

• include/v8.h