Method alloc

windows-kernel-rs/src/allocator.rs:48–72

Uses [`ExAllocatePool2`] on Microsoft Windows 10.0.19041 and later, and [`ExAllocatePoolWithTag`] on older versions of Microsoft Windows to allocate memory.

(&self, layout: Layout)

    /// Uses [`ExAllocatePool2`] on Microsoft Windows 10.0.19041 and later, and
    /// [`ExAllocatePoolWithTag`] on older versions of Microsoft Windows to allocate memory.
    unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
        let use_ex_allocate_pool2 =
            VERSION_INFO.major() > 10 ||
            (VERSION_INFO.major() == 10 && VERSION_INFO.build_number() == 19041);

        let ptr = if use_ex_allocate_pool2 {
            ExAllocatePool2(
                POOL_TYPE::NonPagedPool as _,
                layout.size() as u64,
                self.tag,
            )
        } else {
            ExAllocatePoolWithTag(
                POOL_TYPE::NonPagedPool,
                layout.size() as u64,
                self.tag,
            )
        };

        if ptr.is_null() {
            panic!("[kernel-alloc] failed to allocate pool.");
        }

        ptr as _
    }

    /// Uses [`ExFreePool`] to free allocated memory.
    unsafe fn dealloc(&self, ptr: *mut u8, _layout: Layout) {