RTL_HEAP_COMMIT_ROUTINE - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers
#ifndef _NTRTL_H

// Heap parameters.

typedef
_Function_class_(RTL_HEAP_COMMIT_ROUTINE)
NTSTATUS
NTAPI
RTL_HEAP_COMMIT_ROUTINE(
    _In_ PVOID Base,
    _Inout_ PVOID* CommitAddress,
    _Inout_ PSIZE_T CommitSize
    );

#endif

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This callback function is documented in Windows Driver Kit.