NtGetNextProcess - NtDoc

#ifndef _NTPSAPI_H
// Processes
#if (PHNT_MODE != PHNT_MODE_KERNEL)
#if (PHNT_VERSION >= PHNT_WS03)

NTSYSCALLAPI
NTSTATUS
NTAPI
NtGetNextProcess(
    _In_opt_ HANDLE ProcessHandle,
    _In_ ACCESS_MASK DesiredAccess,
    _In_ ULONG HandleAttributes,
    _In_ ULONG Flags,
    _Out_ PHANDLE NewProcessHandle
    );

#endif
#endif
#endif
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#ifndef _NTZWAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
ZwGetNextProcess(
    _In_opt_ HANDLE ProcessHandle,
    _In_ ACCESS_MASK DesiredAccess,
    _In_ ULONG HandleAttributes,
    _In_ ULONG Flags,
    _Out_ PHANDLE NewProcessHandle
    );

#endif
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