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Overview
| Comment: | Further enhance the vfslog extension to record the number of freelist pages and the first freelist page in CHNGCTR-READ and CHNGCTR-WRITE records. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | 08157524ca816a81f3c341097e239827 |
| User & Date: | drh 2013-10-18 17:42:35 |
Context
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2013-10-18
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| 20:03 | Add the SQLITE_FCNTL_TRACE file control and generate it for OP_Trace when compiled with SQLITE_USE_FCNTL_TRACE. Update vfslog.c to make use of the new file control. Also update vfslog.c to log UNLOCK events before the fact, rather than afterwards. check-in: e801f35a user: drh tags: trunk | |
| 17:42 | Further enhance the vfslog extension to record the number of freelist pages and the first freelist page in CHNGCTR-READ and CHNGCTR-WRITE records. check-in: 08157524 user: drh tags: trunk | |
| 14:37 | In the vfslog extension for FILECONTROL records, show the pragma name for SQLITE_FCNTL_PRAGMAs and the requested size for SQLITE_FCNTL_SIZE_HINT. check-in: f0629695 user: drh tags: trunk | |
Changes
Changes to ext/misc/vfslog.c.
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s1 += pI[1] + s0;
pI += 2;
}
for(i=0; i<8; i++) sqlite3_snprintf(3, zCksum+i*2, "%02x", p[i]);
sqlite3_snprintf(18, zCksum+i*2, "-%08x%08x", s0, s1);
}
}
/*
** Read data from an vlog-file.
*/
static int vlogRead(
sqlite3_file *pFile,
void *zBuf,
................................................................................
if( rc==SQLITE_OK
&& p->pLog
&& p->pLog->zFilename
&& iOfst<=24
&& iOfst+iAmt>=28
){
unsigned char *x = ((unsigned char*)zBuf)+(24-iOfst);
unsigned iCtr;
iCtr = (x[0]<<24) + (x[1]<<16) + (x[2]<<8) + x[3];
vlogLogPrint(p->pLog, tStart, 0, "CHNGCTR-READ", iCtr, -1, 0, 0);
}
return rc;
}
/*
** Write data to an vlog-file.
*/
................................................................................
if( rc==SQLITE_OK
&& p->pLog
&& p->pLog->zFilename
&& iOfst<=24
&& iOfst+iAmt>=28
){
unsigned char *x = ((unsigned char*)z)+(24-iOfst);
unsigned iCtr;
iCtr = (x[0]<<24) + (x[1]<<16) + (x[2]<<8) + x[3];
vlogLogPrint(p->pLog, tStart, 0, "CHNGCTR-WRITE", iCtr, -1, 0, 0);
}
return rc;
}
/*
** Truncate an vlog-file.
*/
|
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s1 += pI[1] + s0;
pI += 2;
}
for(i=0; i<8; i++) sqlite3_snprintf(3, zCksum+i*2, "%02x", p[i]);
sqlite3_snprintf(18, zCksum+i*2, "-%08x%08x", s0, s1);
}
}
/*
** Convert a big-endian 32-bit integer into a native integer
*/
static int bigToNative(const unsigned char *x){
return (x[0]<<24) + (x[1]<<16) + (x[2]<<8) + x[3];
}
/*
** Read data from an vlog-file.
*/
static int vlogRead(
sqlite3_file *pFile,
void *zBuf,
................................................................................
if( rc==SQLITE_OK
&& p->pLog
&& p->pLog->zFilename
&& iOfst<=24
&& iOfst+iAmt>=28
){
unsigned char *x = ((unsigned char*)zBuf)+(24-iOfst);
unsigned iCtr, nFree = -1;
char *zFree = 0;
char zStr[12];
iCtr = bigToNative(x);
if( iOfst+iAmt>=40 ){
zFree = zStr;
sqlite3_snprintf(sizeof(zStr), zStr, "%d", bigToNative(x+8));
nFree = bigToNative(x+12);
}
vlogLogPrint(p->pLog, tStart, 0, "CHNGCTR-READ", iCtr, nFree, zFree, 0);
}
return rc;
}
/*
** Write data to an vlog-file.
*/
................................................................................
if( rc==SQLITE_OK
&& p->pLog
&& p->pLog->zFilename
&& iOfst<=24
&& iOfst+iAmt>=28
){
unsigned char *x = ((unsigned char*)z)+(24-iOfst);
unsigned iCtr, nFree = -1;
char *zFree = 0;
char zStr[12];
iCtr = bigToNative(x);
if( iOfst+iAmt>=40 ){
zFree = zStr;
sqlite3_snprintf(sizeof(zStr), zStr, "%d", bigToNative(x+8));
nFree = bigToNative(x+12);
}
vlogLogPrint(p->pLog, tStart, 0, "CHNGCTR-WRITE", iCtr, nFree, zFree, 0);
}
return rc;
}
/*
** Truncate an vlog-file.
*/
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