resntfy.c File Reference

#include <k32.h>
#include <debug.h>

Include dependency graph for resntfy.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
HANDLE WINAPI	CreateMemoryResourceNotification (IN MEMORY_RESOURCE_NOTIFICATION_TYPE NotificationType)
BOOL WINAPI	QueryMemoryResourceNotification (IN HANDLE ResourceNotificationHandle, OUT PBOOL ResourceState)

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 13 of file resntfy.c.

Function Documentation

CreateMemoryResourceNotification()

HANDLE WINAPI CreateMemoryResourceNotification

(

IN MEMORY_RESOURCE_NOTIFICATION_TYPE

NotificationType

)

Definition at line 23 of file resntfy.c.

{
    UNICODE_STRING EventName;
    OBJECT_ATTRIBUTES ObjectAttributes;
    HANDLE hEvent;
    NTSTATUS Status;
 
    if (NotificationType > HighMemoryResourceNotification)
    {
        SetLastError(ERROR_INVALID_PARAMETER);
        return NULL;
    }
 
    RtlInitUnicodeString(&EventName,
                         NotificationType ?
                         L"\\KernelObjects\\HighMemoryCondition" :
                         L"\\KernelObjects\\LowMemoryCondition");
 
    InitializeObjectAttributes(&ObjectAttributes,
                               &EventName,
                               0,
                               NULL,
                               NULL);
 
    Status = NtOpenEvent(&hEvent,
                         EVENT_QUERY_STATE | SYNCHRONIZE,
                         &ObjectAttributes);
    if (!NT_SUCCESS(Status))
    {
        BaseSetLastNTError(Status);
        return NULL;
    }
 
    return hEvent;
}

QueryMemoryResourceNotification()

BOOL WINAPI QueryMemoryResourceNotification	(	IN HANDLE	ResourceNotificationHandle,
		OUT PBOOL	ResourceState
	)

Definition at line 64 of file resntfy.c.

{
    EVENT_BASIC_INFORMATION EventInfo;
    NTSTATUS Status;
 
    if ((ResourceNotificationHandle) &&
        (ResourceNotificationHandle != INVALID_HANDLE_VALUE) &&
        (ResourceState))
    {
        Status = NtQueryEvent(ResourceNotificationHandle,
                              EventBasicInformation,
                              &EventInfo,
                              sizeof(EventInfo),
                              NULL);
        if (NT_SUCCESS(Status))
        {
            *ResourceState = (EventInfo.EventState == 1);
            return TRUE;
        }
 
        BaseSetLastNTError(Status);
    }
    else
    {
        SetLastError(ERROR_INVALID_PARAMETER);
    }
 
    return FALSE;
}