#ifndef _NTRTL_H

/**
 * The RtlAllocateHeap routine allocates a block of memory from a heap.
 *
 * @param HeapHandle Handle for a private heap from which the memory will be allocated.
 * @param Flags Controllable aspects of heap allocation. Specifying any flags will override the corresponding value specified when the heap was created with RtlCreateHeap.
 * @param Size Number of bytes to be allocated. If the heap, specified by the HeapHandle parameter, is a nongrowable heap, Size must be less than or equal to the heap's virtual memory threshold.
 * @return If the call to RtlAllocateHeap succeeds, the return value is a pointer to the newly-allocated block. The return value is NULL if the allocation failed.
 * @remarks https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/ntifs/nf-ntifs-rtlallocateheap
 */
_Success_(return != 0)
_Must_inspect_result_
_Ret_maybenull_
_Post_writable_byte_size_(Size)
__drv_allocatesMem(Mem)
NTSYSAPI
DECLSPEC_ALLOCATOR
DECLSPEC_NOALIAS
DECLSPEC_RESTRICT
PVOID
NTAPI
RtlAllocateHeap(
    _In_ PVOID HeapHandle,
    _In_opt_ ULONG Flags,
    _In_ SIZE_T Size
    );

#endif
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