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Overview
| Comment: | Fix a problem in the unix implementation of FCNTL_SIZE_HINT on systems that do not support posix_fallocate(). |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
af20eae1e6f608e4e61a07c3d14cf88c |
| User & Date: | dan 2015-01-06 21:31:47 |
Context
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2015-01-07
| ||
| 14:09 | Add a valgrind test to the Linux-x86_64 platform in releasetest.tcl. check-in: 4b6df035 user: drh tags: trunk | |
|
2015-01-06
| ||
| 21:31 | Fix a problem in the unix implementation of FCNTL_SIZE_HINT on systems that do not support posix_fallocate(). check-in: af20eae1 user: dan tags: trunk | |
| 16:53 | Improved and more rigorous test of large VALUES clauses. check-in: 6917d9f4 user: drh tags: trunk | |
Changes
Changes to src/os_unix.c.
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** single byte to the last byte in each block that falls entirely
** within the extended region. Then, if required, a single byte
** at offset (nSize-1), to set the size of the file correctly.
** This is a similar technique to that used by glibc on systems
** that do not have a real fallocate() call.
*/
int nBlk = buf.st_blksize; /* File-system block size */
i64 iWrite; /* Next offset to write to */
iWrite = ((buf.st_size + 2*nBlk - 1)/nBlk)*nBlk-1;
assert( iWrite>=buf.st_size );
assert( (iWrite/nBlk)==((buf.st_size+nBlk-1)/nBlk) );
assert( ((iWrite+1)%nBlk)==0 );
for(/*no-op*/; iWrite<nSize; iWrite+=nBlk ){
int nWrite = seekAndWrite(pFile, iWrite, "", 1);
if( nWrite!=1 ) return SQLITE_IOERR_WRITE;
}
if( nSize%nBlk ){
int nWrite = seekAndWrite(pFile, nSize-1, "", 1);
if( nWrite!=1 ) return SQLITE_IOERR_WRITE;
}
#endif
}
}
#if SQLITE_MAX_MMAP_SIZE>0
|
> | | | |
3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 |
** single byte to the last byte in each block that falls entirely
** within the extended region. Then, if required, a single byte
** at offset (nSize-1), to set the size of the file correctly.
** This is a similar technique to that used by glibc on systems
** that do not have a real fallocate() call.
*/
int nBlk = buf.st_blksize; /* File-system block size */
int nWrite = 0; /* Number of bytes written by seekAndWrite */
i64 iWrite; /* Next offset to write to */
iWrite = ((buf.st_size + 2*nBlk - 1)/nBlk)*nBlk-1;
assert( iWrite>=buf.st_size );
assert( (iWrite/nBlk)==((buf.st_size+nBlk-1)/nBlk) );
assert( ((iWrite+1)%nBlk)==0 );
for(/*no-op*/; iWrite<nSize; iWrite+=nBlk ){
nWrite = seekAndWrite(pFile, iWrite, "", 1);
if( nWrite!=1 ) return SQLITE_IOERR_WRITE;
}
if( nWrite==0 || (nSize%nBlk) ){
nWrite = seekAndWrite(pFile, nSize-1, "", 1);
if( nWrite!=1 ) return SQLITE_IOERR_WRITE;
}
#endif
}
}
#if SQLITE_MAX_MMAP_SIZE>0
|