asmjit::VirtMem::ProtectJitReadWriteScope Class Reference

JIT protection scope that prepares the given memory block to be written to in the current thread.

It calls VirtMem::protectJitMemory(VirtMem::ProtectJitAccess::kReadWrite) at construction time and VirtMem::protectJitMemory(VirtMem::ProtectJitAccess::kReadExecute) combined with flushInstructionCache() in destructor. The purpose of this class is to make writing to JIT memory easier.

Public Members

Members

void* _rxPtr

size_t _size

CachePolicy _policy

Member Functions

ProtectJitReadWriteScope(const ProtectJitReadWriteScope& other) = delete

ProtectJitReadWriteScope& operator=(const ProtectJitReadWriteScope& other) = delete

Construction & Destruction

ProtectJitReadWriteScope(void* rxPtr, size_t size, CachePolicy policy = CachePolicy::kDefault) noexcept

~ProtectJitReadWriteScope() noexcept

Constructor & Destructor Documentation

VirtMem::ProtectJitReadWriteScope::ProtectJitReadWriteScope(void* rxPtr, size_t size, CachePolicy policy = CachePolicy::kDefault)noexcept

Makes the given memory block RW protected.

VirtMem::ProtectJitReadWriteScope::~ProtectJitReadWriteScope()noexcept

Makes the memory block RX protected again and flushes instruction cache.