Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
Comment: | Simplification to the read and write primatives in the unix VFS. |
---|---|
Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
9eefa449792f03c4c149edcbc6b9b769 |
User & Date: | drh 2015-12-01 16:21:35.045 |
Context
2015-12-01
| ||
17:48 | The test_fs.c test module now works on Windows. (check-in: e3d8628456 user: drh tags: trunk) | |
16:21 | Simplification to the read and write primatives in the unix VFS. (check-in: 9eefa44979 user: drh tags: trunk) | |
2015-11-30
| ||
22:52 | Add the SQLITE_PRINTF_PRECISION_LIMIT compile-time option. (check-in: ecad75d69e user: drh tags: trunk) | |
Changes
Changes to src/os_unix.c.
︙ | ︙ | |||
3082 3083 3084 3085 3086 3087 3088 | got = osPread(id->h, pBuf, cnt, offset); SimulateIOError( got = -1 ); #elif defined(USE_PREAD64) got = osPread64(id->h, pBuf, cnt, offset); SimulateIOError( got = -1 ); #else newOffset = lseek(id->h, offset, SEEK_SET); | | | < | < < < | 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 | got = osPread(id->h, pBuf, cnt, offset); SimulateIOError( got = -1 ); #elif defined(USE_PREAD64) got = osPread64(id->h, pBuf, cnt, offset); SimulateIOError( got = -1 ); #else newOffset = lseek(id->h, offset, SEEK_SET); SimulateIOError( newOffset = -1 ); if( newOffset<0 ){ storeLastErrno((unixFile*)id, errno); return -1; } got = osRead(id->h, pBuf, cnt); #endif if( got==cnt ) break; if( got<0 ){ if( errno==EINTR ){ got = 1; continue; } |
︙ | ︙ | |||
3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 | int nBuf, /* Size of buffer pBuf in bytes */ int *piErrno /* OUT: Error number if error occurs */ ){ int rc = 0; /* Value returned by system call */ assert( nBuf==(nBuf&0x1ffff) ); assert( fd>2 ); nBuf &= 0x1ffff; TIMER_START; #if defined(USE_PREAD) do{ rc = (int)osPwrite(fd, pBuf, nBuf, iOff); }while( rc<0 && errno==EINTR ); #elif defined(USE_PREAD64) do{ rc = (int)osPwrite64(fd, pBuf, nBuf, iOff);}while( rc<0 && errno==EINTR); #else do{ i64 iSeek = lseek(fd, iOff, SEEK_SET); | > | < | < | > | | 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 | int nBuf, /* Size of buffer pBuf in bytes */ int *piErrno /* OUT: Error number if error occurs */ ){ int rc = 0; /* Value returned by system call */ assert( nBuf==(nBuf&0x1ffff) ); assert( fd>2 ); assert( piErrno!=0 ); nBuf &= 0x1ffff; TIMER_START; #if defined(USE_PREAD) do{ rc = (int)osPwrite(fd, pBuf, nBuf, iOff); }while( rc<0 && errno==EINTR ); #elif defined(USE_PREAD64) do{ rc = (int)osPwrite64(fd, pBuf, nBuf, iOff);}while( rc<0 && errno==EINTR); #else do{ i64 iSeek = lseek(fd, iOff, SEEK_SET); SimulateIOError( iSeek = -1 ); if( iSeek<0 ){ rc = -1; break; } rc = osWrite(fd, pBuf, nBuf); }while( rc<0 && errno==EINTR ); #endif TIMER_END; OSTRACE(("WRITE %-3d %5d %7lld %llu\n", fd, rc, iOff, TIMER_ELAPSED)); if( rc<0 ) *piErrno = errno; return rc; } /* ** Seek to the offset in id->offset then read cnt bytes into pBuf. ** Return the number of bytes actually read. Update the offset. |
︙ | ︙ | |||
4406 4407 4408 4409 4410 4411 4412 | else{ static const int pgsz = 4096; int iPg; /* Write to the last byte of each newly allocated or extended page */ assert( (nByte % pgsz)==0 ); for(iPg=(sStat.st_size/pgsz); iPg<(nByte/pgsz); iPg++){ | > | | 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 | else{ static const int pgsz = 4096; int iPg; /* Write to the last byte of each newly allocated or extended page */ assert( (nByte % pgsz)==0 ); for(iPg=(sStat.st_size/pgsz); iPg<(nByte/pgsz); iPg++){ int x = 0; if( seekAndWriteFd(pShmNode->h, iPg*pgsz + pgsz-1, "", 1, &x)!=1 ){ const char *zFile = pShmNode->zFilename; rc = unixLogError(SQLITE_IOERR_SHMSIZE, "write", zFile); goto shmpage_out; } } } } |
︙ | ︙ |