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Overview
| Comment: | Limit the number of memset() calls used when determining a temporary file name on Windows. Also, fix a harmless compiler warning. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
136fc2931b156f91cdd76a7a009298cd |
| User & Date: | mistachkin 2013-07-31 23:28:36 |
Context
|
2013-08-01
| ||
| 16:52 | Avoid using left-most column STAT3 samples if the left-most column has an equality constrain and there are inequality constraints on the second column. check-in: 31b4e63b user: drh tags: trunk | |
|
2013-07-31
| ||
| 23:28 | Limit the number of memset() calls used when determining a temporary file name on Windows. Also, fix a harmless compiler warning. check-in: 136fc293 user: mistachkin tags: trunk | |
| 22:39 | Slight modifications to path name translation handling for Cygwin. check-in: 33ba1f4c user: mistachkin tags: trunk | |
Changes
Changes to src/os_win.c.
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"winMapfile", pFd->zPath);
/* Log the error, but continue normal operation using xRead/xWrite */
OSTRACE(("MAP-FILE-CREATE pid=%lu, pFile=%p, rc=SQLITE_IOERR_MMAP\n",
osGetCurrentProcessId(), pFd));
return SQLITE_OK;
}
assert( (nMap % winSysInfo.dwPageSize)==0 );
#if SQLITE_OS_WINRT
pNew = osMapViewOfFileFromApp(pFd->hMap, flags, 0, nMap);
#else
assert( sizeof(SIZE_T)==sizeof(sqlite3_int64) || nMap<=0xffffffff );
pNew = osMapViewOfFile(pFd->hMap, flags, 0, 0, (SIZE_T)nMap);
#endif
if( pNew==NULL ){
osCloseHandle(pFd->hMap);
pFd->hMap = NULL;
pFd->lastErrno = osGetLastError();
winLogError(SQLITE_IOERR_MMAP, pFd->lastErrno,
................................................................................
/* It's odd to simulate an io-error here, but really this is just
** using the io-error infrastructure to test that SQLite handles this
** function failing.
*/
SimulateIOError( return SQLITE_IOERR );
memset(zTempPath, 0, SQLITE_WIN32_MAX_PATH+2);
if( sqlite3_temp_directory ){
sqlite3_snprintf(SQLITE_WIN32_MAX_PATH-30, zTempPath, "%s",
sqlite3_temp_directory);
}
#if !SQLITE_OS_WINRT
else if( isNT() ){
char *zMulti;
................................................................................
sqlite3_snprintf(SQLITE_WIN32_MAX_PATH-30, zTempPath, "%s", zUtf8);
sqlite3_free(zUtf8);
}else{
OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n"));
return SQLITE_IOERR_NOMEM;
}
}
#endif
#endif
/* Check that the output buffer is large enough for the temporary file
** name. If it is not, return SQLITE_ERROR.
*/
nTempPath = sqlite3Strlen30(zTempPath);
if( (nTempPath + sqlite3Strlen30(SQLITE_TEMP_FILE_PREFIX) + 18) >= nBuf ){
................................................................................
#endif
/* If the second argument to this function is NULL, generate a
** temporary file name to use
*/
if( !zUtf8Name ){
assert(isDelete && !isOpenJournal);
memset(zTmpname, 0, SQLITE_WIN32_MAX_PATH+2);
rc = getTempname(SQLITE_WIN32_MAX_PATH+2, zTmpname);
if( rc!=SQLITE_OK ){
OSTRACE(("OPEN name=%s, rc=%s", zUtf8Name, sqlite3ErrName(rc)));
return rc;
}
zUtf8Name = zTmpname;
}
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"winMapfile", pFd->zPath);
/* Log the error, but continue normal operation using xRead/xWrite */
OSTRACE(("MAP-FILE-CREATE pid=%lu, pFile=%p, rc=SQLITE_IOERR_MMAP\n",
osGetCurrentProcessId(), pFd));
return SQLITE_OK;
}
assert( (nMap % winSysInfo.dwPageSize)==0 );
assert( sizeof(SIZE_T)==sizeof(sqlite3_int64) || nMap<=0xffffffff );
#if SQLITE_OS_WINRT
pNew = osMapViewOfFileFromApp(pFd->hMap, flags, 0, (SIZE_T)nMap);
#else
pNew = osMapViewOfFile(pFd->hMap, flags, 0, 0, (SIZE_T)nMap);
#endif
if( pNew==NULL ){
osCloseHandle(pFd->hMap);
pFd->hMap = NULL;
pFd->lastErrno = osGetLastError();
winLogError(SQLITE_IOERR_MMAP, pFd->lastErrno,
................................................................................
/* It's odd to simulate an io-error here, but really this is just
** using the io-error infrastructure to test that SQLite handles this
** function failing.
*/
SimulateIOError( return SQLITE_IOERR );
if( sqlite3_temp_directory ){
sqlite3_snprintf(SQLITE_WIN32_MAX_PATH-30, zTempPath, "%s",
sqlite3_temp_directory);
}
#if !SQLITE_OS_WINRT
else if( isNT() ){
char *zMulti;
................................................................................
sqlite3_snprintf(SQLITE_WIN32_MAX_PATH-30, zTempPath, "%s", zUtf8);
sqlite3_free(zUtf8);
}else{
OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n"));
return SQLITE_IOERR_NOMEM;
}
}
#else
else{
/*
** Compiled without ANSI support and the current operating system
** is not Windows NT; therefore, just zero the temporary buffer.
*/
memset(zTempPath, 0, SQLITE_WIN32_MAX_PATH+2);
}
#endif /* SQLITE_WIN32_HAS_ANSI */
#else
else{
/*
** Compiled for WinRT and the sqlite3_temp_directory is not set;
** therefore, just zero the temporary buffer.
*/
memset(zTempPath, 0, SQLITE_WIN32_MAX_PATH+2);
}
#endif /* !SQLITE_OS_WINRT */
/* Check that the output buffer is large enough for the temporary file
** name. If it is not, return SQLITE_ERROR.
*/
nTempPath = sqlite3Strlen30(zTempPath);
if( (nTempPath + sqlite3Strlen30(SQLITE_TEMP_FILE_PREFIX) + 18) >= nBuf ){
................................................................................
#endif
/* If the second argument to this function is NULL, generate a
** temporary file name to use
*/
if( !zUtf8Name ){
assert(isDelete && !isOpenJournal);
rc = getTempname(SQLITE_WIN32_MAX_PATH+2, zTmpname);
if( rc!=SQLITE_OK ){
OSTRACE(("OPEN name=%s, rc=%s", zUtf8Name, sqlite3ErrName(rc)));
return rc;
}
zUtf8Name = zTmpname;
}
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