/ , OVERLAPPED, , .
, , , . , , /. , . , , OVERLAPPED , .
SleepEx , , WAIT_TO_COMPLETION, GetLastError, .
:
1. INFINITE. , .
2. hEvent OVERLAPPED, .
, . 14.2. , , .
. 14.2. /
: /
14.3 (atouEX) 14.1. /. atouEx 14.1, , , , , . , , atouEx , , atouOV .
14.2. atouEx: /
/* 14. atouEX
ASCII Unicode /. */
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/* atouEX 1 2 */
#include "EvryThng.h"
#define MAX_OVRLP 4
#define REC_SIZE 8096 /* , atouOV. */
#define UREC_SIZE 2 * REC_SIZE
static VOID WINAPI ReadDone(DWORD, DWORD, LPOVERLAPPED);
static VOID WINAPI WriteDone(DWORD, DWORD, LPOVERLAPPED);
/* OVERLAPPED , . . */
OVERLAPPED OverLapIn[MAX_OVRLP], OverLapOut [MAX_OVRLP];
CHAR AsRec[MAX_OVRLP][REC_SIZE];
WCHAR UnRec[MAX_OVRLP][REC_SIZE];
HANDLE hInputFile, hOutputFile;
LONGLONG nRecord, nDone;
LARGE_INTEGER FileSize;
int _tmain(int argc, LPTSTR argv[]) {
DWORD ic;
LARGE_INTEGER CurPosIn;
hInputFile = CreateFile(argv[1], GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL);
hOutputFile = CreateFile(argv[2], GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_FLAG_OVERLAPPED, NULL);
FileSize.LowPart = GetFileSize(hInputFile, &FileSize.HighPart);
nRecord = FileSize.QuadPart / REC_SIZE;
if ((FileSize.QuadPart % REC_SIZE)!= 0) nRecord++;
CurPosIn.QuadPart = 0;
for (ic = 0; ic < MAX_OVRLP; ic++) {
OverLapIn[ic].hEvent = (HANDLE)ic; /* . */
OverLapOut[ic].hEvent = (HANDLE)ic; /* . */
OverLapIn[ic].Offset = CurPosIn.LowPart;
OverLapIn[ic].OffsetHigh = CurPosIn.HighPart;
if (CurPosIn.QuadPart < FileSize.QuadPart) ReadFileEx(hInputFile, AsRec[ic], REC_SIZE, &OverLapIn [ic], ReadDone);
CurPosIn.QuadPart += (LONGLONG)REC_SIZE;
}
/* . , .*/
nDone = 0;
while (nDone < 2 * nRecord) SleepEx(INFINITE, TRUE);
CloseHandle(hInputFile);
CloseHandle(hOutputFile);
_tprintf(_T(" ASCII Unicode .\n"));
return 0;
}
static VOID WINAPI ReadDone(DWORD Code, DWORD nBytes, LPOVERLAPPED pOv) {
/* . . */
LARGE_INTEGER CurPosIn, CurPosOut;
DWORD ic, i;
nDone++;
/* . */
ic = (DWORD)(pOv->hEvent);
CurPosIn.LowPart = OverLapIn[ic].Offset;
CurPosIn.HighPart = OverLapIn[ic].OffsetHigh;
CurPosOut.QuadPart = (CurPosIn.QuadPart / REC_SIZE) * UREC_SIZE;
OverLapOut[ic].Offset = CurPosOut.LowPart;
OverLapOut[ic].OffsetHigh = CurPosOut.HighPart;
/* ASCII Unicode. */
for (i = 0; i < nBytes; i++) UnRec[ic][i] = AsRec[ic][i];
WriteFileEx(hOutputFile, UnRec[ic], nBytes*2, &OverLapOut[ic], WriteDone);
/* OVERLAPPED . */
CurPosIn.QuadPart += REC_SIZE * (LONGLONG)(MAX_OVRLP);
OverLapIn[ic].Offset = CurPosIn.LowPart;
OverLapIn[ic].OffsetHigh = CurPosIn.HighPart;
return;
}
static VOID WINAPI WriteDone(DWORD Code, DWORD nBytes, LPOVERLAPPED pOv) {
/* . . */
LARGE_INTECER CurPosIn;
DWORD ic;
nDone++;
ic = (DWORD)(pOv->hEvent);
CurPosIn.LowPart = OverLapIn[ic].Offset;
CurPosIn.HighPart = OverLapIn[ic].OffsetHigh;
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if (CurPosIn.QuadPart < FileSize.QuadPart) {
ReadFileEx(hInputFile, AsRec[ic], REC_SIZE, &OverLapIn[ic], ReadDone);
}
return;
}
/
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Windows , / , . grepMT ( 7). , , , /. , 14.1 14.2, , .
atouMT, , , Web-. atouMT Windows, /, . , . .
atouMT., Web-, "", . , CreateHandle, DuplicateHandle.
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