// Public nt-lite DDK event declarations.

#pragma once

#include <stdint.h>
#include <ntlite/status.h>
#include <ntlite/ddk/list.h>
#include <ntlite/ddk/object.h>
#include <ntlite/ddk/sync.h>

typedef enum EVENT_TYPE {
    EventAutoReset,
    EventManualReset,
} EVENT_TYPE;

typedef struct EVENT {
    OBJECT Header;
    SPINLOCK Lock;
    EVENT_TYPE Type;
    uint32_t Signaled;
    LIST_ENTRY WaitList;
    LIST_ENTRY MultiWaitList;
} EVENT;

// Creates an event object.
__declspec(dllexport) KSTATUS KeEventCreate(EVENT_TYPE type, uint32_t initialState, EVENT** out);

// Signals an event.
__declspec(dllexport) void KeSignalEvent(EVENT* event);

// Clears an event.
__declspec(dllexport) void KeClearEvent(EVENT* event);

// Waits for an event.
__declspec(dllexport) KSTATUS KeWaitForEvent(EVENT* event, uint8_t alertable);

// Attempts to wait for an event without blocking.
__declspec(dllexport) KSTATUS KeTryWaitEvent(EVENT* event);

// Waits for one of several events.
__declspec(dllexport) KSTATUS KeWaitForMultipleEvents(EVENT** events,
                                                      uint32_t count,
                                                      uint8_t alertable,
                                                      uint64_t timeoutMs,
                                                      uint32_t* signaledIndexOut);