ThreadIsolatedAllocator Class Reference

#include <v8-platform.h>

Public Types
enum class	Type { kPkey }

Public Member Functions
virtual	~ThreadIsolatedAllocator ()=default
virtual void *	Allocate (size_t size)=0
virtual void	Free (void *object)=0
virtual Type	Type () const =0
virtual int	Pkey () const

Static Public Member Functions
static void	SetDefaultPermissionsForSignalHandler ()

Detailed Description

An allocator that uses per-thread permissions to protect the memory.

The implementation is platform/hardware specific, e.g. using pkeys on x64.

INTERNAL ONLY: This interface has not been stabilised and may change without notice from one release to another without being deprecated first.

Definition at line 622 of file v8-platform.h.

Member Enumeration Documentation

Type

enum class Type

strong

Enumerator
kPkey

Definition at line 630 of file v8-platform.h.

Constructor & Destructor Documentation

~ThreadIsolatedAllocator()

virtual ~ThreadIsolatedAllocator ( )

virtualdefault

Member Function Documentation

Allocate()

virtual void * Allocate ( size_t  size )

pure virtual

Free()

virtual void Free ( void *  object )

pure virtual

Pkey()

virtual int Pkey ( ) const

inlinevirtual

Return the pkey used to implement the thread isolation if Type == kPkey.

Definition at line 639 of file v8-platform.h.

SetDefaultPermissionsForSignalHandler()

static void SetDefaultPermissionsForSignalHandler ( )

static

Per-thread permissions can be reset on signal handler entry. Even reading ThreadIsolated memory will segfault in that case. Call this function on signal handler entry to ensure that read permissions are restored.

Type()

virtual Type Type ( ) const

pure virtual

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

• include/v8-platform.h