reactos/rosapps/tests/apc/apc.c

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#include <stdarg.h>
#include <string.h>
#include <stdio.h>
#include <windows.h>
#include <ddk/ntddk.h>
#include <rosrtl/string.h>
HANDLE OutputHandle;
HANDLE InputHandle;
VOID STDCALL
ApcRoutine(PVOID Context,
PIO_STATUS_BLOCK IoStatus,
ULONG Reserved)
{
printf("(apc.exe) ApcRoutine(Context %p)\n", Context);
}
int main(int argc, char* argv[])
{
NTSTATUS Status;
HANDLE FileHandle;
OBJECT_ATTRIBUTES ObjectAttributes;
UNICODE_STRING FileName = ROS_STRING_INITIALIZER(L"\\C:\\a.txt");
IO_STATUS_BLOCK IoStatus;
CHAR Buffer[256];
HANDLE EventHandle;
LARGE_INTEGER off;
AllocConsole();
InputHandle = GetStdHandle(STD_INPUT_HANDLE);
OutputHandle = GetStdHandle(STD_OUTPUT_HANDLE);
printf("APC test program\n");
EventHandle = CreateEventW(NULL,
FALSE,
FALSE,
NULL);
if (EventHandle == INVALID_HANDLE_VALUE)
{
printf("Failed to create event\n");
return 0;
}
printf("Opening file\n");
InitializeObjectAttributes(&ObjectAttributes,
&FileName,
0,
NULL,
NULL);
printf("Creating file\n");
FileHandle = CreateFileW(L"C:\\a.txt",
FILE_GENERIC_READ | FILE_GENERIC_WRITE,
0,
NULL,
OPEN_EXISTING,
FILE_FLAG_OVERLAPPED,
NULL);
if (FileHandle == INVALID_HANDLE_VALUE)
{
printf("Open failed last err 0x%lu\n",GetLastError());
return 0;
}
off.QuadPart = 0;
printf("Reading file\n");
Status = ZwReadFile(FileHandle,
NULL,
(PIO_APC_ROUTINE)ApcRoutine,
(PVOID) 0xdeadbeef,
&IoStatus,
Buffer,
256,//len
&off ,//offset must exist if file was opened for asynch. i/o aka. OVERLAPPED
NULL);
if (!NT_SUCCESS(Status))
{
printf("Read failed status 0x%lu\n",Status);
}
printf("Waiting\n");
WaitForSingleObjectEx(EventHandle, INFINITE, TRUE);
printf("Returned from wait\n");
ZwClose(FileHandle);
printf("Program finished\n");
return 0;
}