Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
| Comment: | Support manually disabling overlapped file I/O for Windows sub-platforms other than Windows CE. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
b9330b887cc8bed2b6b3e6c1b269788e |
| User & Date: | mistachkin 2014-12-20 22:21:49 |
Context
|
2014-12-21
| ||
| 11:56 | Fixes to the README.md file. No changes to code. check-in: ef4b734d user: drh tags: trunk | |
|
2014-12-20
| ||
| 22:21 | Support manually disabling overlapped file I/O for Windows sub-platforms other than Windows CE. check-in: b9330b88 user: mistachkin tags: trunk | |
| 21:14 | Minor fixes and enhancements to the SQLITE_ENABLE_API_ARMOR functionality. check-in: cb3e4219 user: mistachkin tags: trunk | |
Changes
Changes to src/os_win.c.
2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 .... 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 .... 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 |
*/
static int winRead(
sqlite3_file *id, /* File to read from */
void *pBuf, /* Write content into this buffer */
int amt, /* Number of bytes to read */
sqlite3_int64 offset /* Begin reading at this offset */
){
#if !SQLITE_OS_WINCE
OVERLAPPED overlapped; /* The offset for ReadFile. */
#endif
winFile *pFile = (winFile*)id; /* file handle */
DWORD nRead; /* Number of bytes actually read from file */
int nRetry = 0; /* Number of retrys */
assert( id!=0 );
................................................................................
pBuf = &((u8 *)pBuf)[nCopy];
amt -= nCopy;
offset += nCopy;
}
}
#endif
#if SQLITE_OS_WINCE
if( winSeekFile(pFile, offset) ){
OSTRACE(("READ file=%p, rc=SQLITE_FULL\n", pFile->h));
return SQLITE_FULL;
}
while( !osReadFile(pFile->h, pBuf, amt, &nRead, 0) ){
#else
memset(&overlapped, 0, sizeof(OVERLAPPED));
................................................................................
pBuf = &((u8 *)pBuf)[nCopy];
amt -= nCopy;
offset += nCopy;
}
}
#endif
#if SQLITE_OS_WINCE
rc = winSeekFile(pFile, offset);
if( rc==0 ){
#else
{
#endif
#if !SQLITE_OS_WINCE
OVERLAPPED overlapped; /* The offset for WriteFile. */
#endif
u8 *aRem = (u8 *)pBuf; /* Data yet to be written */
int nRem = amt; /* Number of bytes yet to be written */
DWORD nWrite; /* Bytes written by each WriteFile() call */
DWORD lastErrno = NO_ERROR; /* Value returned by GetLastError() */
#if !SQLITE_OS_WINCE
memset(&overlapped, 0, sizeof(OVERLAPPED));
overlapped.Offset = (LONG)(offset & 0xffffffff);
overlapped.OffsetHigh = (LONG)((offset>>32) & 0x7fffffff);
#endif
while( nRem>0 ){
#if SQLITE_OS_WINCE
if( !osWriteFile(pFile->h, aRem, nRem, &nWrite, 0) ){
#else
if( !osWriteFile(pFile->h, aRem, nRem, &nWrite, &overlapped) ){
#endif
if( winRetryIoerr(&nRetry, &lastErrno) ) continue;
break;
}
assert( nWrite==0 || nWrite<=(DWORD)nRem );
if( nWrite==0 || nWrite>(DWORD)nRem ){
lastErrno = osGetLastError();
break;
}
#if !SQLITE_OS_WINCE
offset += nWrite;
overlapped.Offset = (LONG)(offset & 0xffffffff);
overlapped.OffsetHigh = (LONG)((offset>>32) & 0x7fffffff);
#endif
aRem += nWrite;
nRem -= nWrite;
}
|
| | | | | | | |
2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 .... 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 .... 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 |
*/
static int winRead(
sqlite3_file *id, /* File to read from */
void *pBuf, /* Write content into this buffer */
int amt, /* Number of bytes to read */
sqlite3_int64 offset /* Begin reading at this offset */
){
#if !SQLITE_OS_WINCE && !defined(SQLITE_WIN32_NO_OVERLAPPED)
OVERLAPPED overlapped; /* The offset for ReadFile. */
#endif
winFile *pFile = (winFile*)id; /* file handle */
DWORD nRead; /* Number of bytes actually read from file */
int nRetry = 0; /* Number of retrys */
assert( id!=0 );
................................................................................
pBuf = &((u8 *)pBuf)[nCopy];
amt -= nCopy;
offset += nCopy;
}
}
#endif
#if SQLITE_OS_WINCE || defined(SQLITE_WIN32_NO_OVERLAPPED)
if( winSeekFile(pFile, offset) ){
OSTRACE(("READ file=%p, rc=SQLITE_FULL\n", pFile->h));
return SQLITE_FULL;
}
while( !osReadFile(pFile->h, pBuf, amt, &nRead, 0) ){
#else
memset(&overlapped, 0, sizeof(OVERLAPPED));
................................................................................
pBuf = &((u8 *)pBuf)[nCopy];
amt -= nCopy;
offset += nCopy;
}
}
#endif
#if SQLITE_OS_WINCE || defined(SQLITE_WIN32_NO_OVERLAPPED)
rc = winSeekFile(pFile, offset);
if( rc==0 ){
#else
{
#endif
#if !SQLITE_OS_WINCE && !defined(SQLITE_WIN32_NO_OVERLAPPED)
OVERLAPPED overlapped; /* The offset for WriteFile. */
#endif
u8 *aRem = (u8 *)pBuf; /* Data yet to be written */
int nRem = amt; /* Number of bytes yet to be written */
DWORD nWrite; /* Bytes written by each WriteFile() call */
DWORD lastErrno = NO_ERROR; /* Value returned by GetLastError() */
#if !SQLITE_OS_WINCE && !defined(SQLITE_WIN32_NO_OVERLAPPED)
memset(&overlapped, 0, sizeof(OVERLAPPED));
overlapped.Offset = (LONG)(offset & 0xffffffff);
overlapped.OffsetHigh = (LONG)((offset>>32) & 0x7fffffff);
#endif
while( nRem>0 ){
#if SQLITE_OS_WINCE || defined(SQLITE_WIN32_NO_OVERLAPPED)
if( !osWriteFile(pFile->h, aRem, nRem, &nWrite, 0) ){
#else
if( !osWriteFile(pFile->h, aRem, nRem, &nWrite, &overlapped) ){
#endif
if( winRetryIoerr(&nRetry, &lastErrno) ) continue;
break;
}
assert( nWrite==0 || nWrite<=(DWORD)nRem );
if( nWrite==0 || nWrite>(DWORD)nRem ){
lastErrno = osGetLastError();
break;
}
#if !SQLITE_OS_WINCE && !defined(SQLITE_WIN32_NO_OVERLAPPED)
offset += nWrite;
overlapped.Offset = (LONG)(offset & 0xffffffff);
overlapped.OffsetHigh = (LONG)((offset>>32) & 0x7fffffff);
#endif
aRem += nWrite;
nRem -= nWrite;
}
|