Index ⭢ Virtual Memory ⭢ asmjit::VirtMem::ProtectJitReadWriteScope

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

Public Members

Members

void* _rx_ptr

size_t _size

CachePolicy _policy

Member Functions

ProtectJitReadWriteScope(const ProtectJitReadWriteScope& other) = delete

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

Construction & Destruction

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

~ProtectJitReadWriteScope() noexcept

VirtMem::ProtectJitReadWriteScope::ProtectJitReadWriteScope(
void* rx_ptr,
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.