// are implemented inside of race runtime.
	kernel32 := syscall.NewLazyDLL("kernel32.dll")
	VirtualAlloc := kernel32.NewProc("VirtualAlloc")
	VirtualFree := kernel32.NewProc("VirtualFree")
	const (
		MEM_COMMIT     = 0x00001000
		MEM_RESERVE    = 0x00002000
		MEM_RELEASE    = 0x8000
		PAGE_READWRITE = 0x04
	)
	mem, _, err := syscall.Syscall6(VirtualAlloc.Addr(), 4, 0, 1<<20, MEM_COMMIT|MEM_RESERVE, PAGE_READWRITE, 0, 0)
	if err != 0 {

	r := stdcall3(_VirtualFree, uintptr(v), n, _MEM_DECOMMIT)
	if r != 0 {
		return
	}

	// Decommit failed. Usual reason is that we've merged memory from two different
	// VirtualAlloc calls, and Windows will only let each VirtualFree handle pages from
	// a single VirtualAlloc. It is okay to specify a subset of the pages from a single alloc,
	// just not pages from multiple allocs. This is a rare case, arising only when we're

package windows

type MemoryBasicInformation struct {
	// A pointer to the base address of the region of pages.
	BaseAddress uintptr
	// A pointer to the base address of a range of pages allocated by the VirtualAlloc function.
	// The page pointed to by the BaseAddress member is contained within this allocation range.
	AllocationBase uintptr
	// The memory protection option when the region was initially allocated
	AllocationProtect uint32

//sys	VirtualLock(addr uintptr, length uintptr) (err error)
//sys	VirtualUnlock(addr uintptr, length uintptr) (err error)
//sys	VirtualAlloc(address uintptr, size uintptr, alloctype uint32, protect uint32) (value uintptr, err error) = kernel32.VirtualAlloc
//sys	VirtualFree(address uintptr, size uintptr, freetype uint32) (err error) = kernel32.VirtualFree

//go:cgo_import_dynamic runtime._SwitchToThread SwitchToThread%0 "kernel32.dll"
//go:cgo_import_dynamic runtime._TlsAlloc TlsAlloc%0 "kernel32.dll"
//go:cgo_import_dynamic runtime._VirtualAlloc VirtualAlloc%4 "kernel32.dll"
//go:cgo_import_dynamic runtime._VirtualFree VirtualFree%3 "kernel32.dll"
//go:cgo_import_dynamic runtime._VirtualQuery VirtualQuery%3 "kernel32.dll"

	procUpdateProcThreadAttribute                            = modkernel32.NewProc("UpdateProcThreadAttribute")
	procVirtualAlloc                                         = modkernel32.NewProc("VirtualAlloc")
	procVirtualFree                                          = modkernel32.NewProc("VirtualFree")
	procVirtualLock                                          = modkernel32.NewProc("VirtualLock")