// Virtual memory

U64 VM_PageSize() {
	SYSTEM_INFO info;
	GetSystemInfo(&info);

	U64 result = info.dwPageSize;
	return result;
}

U64 VM_AllocationGranularity() {
	SYSTEM_INFO info;
	GetSystemInfo(&info);

	U64 result = info.dwAllocationGranularity;
	return result;
}

void *VM_Reserve(U64 size) {
	void *result = VirtualAlloc(0, size, MEM_RESERVE, PAGE_NOACCESS);
	return result;
}

B32 VM_Commit(void *base, U64 size) {
	B32 result = VirtualAlloc(base, size, MEM_COMMIT, PAGE_READWRITE) != 0;
	return result;
}

void VM_Decommit(void *base, U64 size) {
	VirtualFree(base, size, MEM_DECOMMIT);
}

void VM_Release(void *base, U64 size) {
	(void) size;

	VirtualFree(base, 0, MEM_RELEASE);
}