void lsmDbSetPagesize(lsm_db *pDb, int nPgsz, int nBlksz){
Database *p = pDb->pDatabase;
assert( lsmMutexHeld(pDb->pEnv, p->pWorkerMutex) && p->bRecovered==0 );
p->nPgsz = nPgsz;
p->nBlksz = nBlksz;
lsmFsSetPageSize(pDb->pFS, p->nPgsz);
lsmFsSetBlockSize(pDb->pFS, p->nBlksz);
}
/*
** Set (bVal==1) or clear (bVal==0) the "recovery done" flag.
**
** TODO: Should this be combined with BeginRecovery()/FinishRecovery()?
*/
void lsmDbRecoveryComplete(lsm_db *pDb, int bVal){
Database *p = pDb->pDatabase;
assert( bVal==1 || bVal==0 );
assert( lsmMutexHeld(pDb->pEnv, p->pWorkerMutex) );
assert( p->pTree );
p->bRecovered = bVal;
p->iCheckpointId = p->worker.iId;
lsmFsSetPageSize(pDb->pFS, p->nPgsz);
lsmFsSetBlockSize(pDb->pFS, p->nBlksz);
}
Snapshot *lsmDbSnapshotRecover(lsm_db *pDb){
Database *p = pDb->pDatabase;
Snapshot *pRet = 0;
lsmMutexEnter(pDb->pEnv, p->pWorkerMutex);
if( p->bRecovered ){
lsmFsSetPageSize(pDb->pFS, p->nPgsz);
lsmFsSetBlockSize(pDb->pFS, p->nBlksz);
lsmMutexLeave(pDb->pEnv, p->pWorkerMutex);
}else{
pRet = &p->worker;
}
return pRet;
}
/*
** Open a new connection to database zFilename.
*/
int lsm_open(lsm_db *pDb, const char *zFilename){
int rc;
if( pDb->pDatabase ){
rc = LSM_MISUSE;
}else{
char *zFull;
/* Translate the possibly relative pathname supplied by the user into
** an absolute pathname. This is required because the supplied path
** is used (either directly or with "-log" appended to it) for more
** than one purpose - to open both the database and log files, and
** perhaps to unlink the log file during disconnection. An absolute
** path is required to ensure that the correct files are operated
** on even if the application changes the cwd. */
rc = getFullpathname(pDb->pEnv, zFilename, &zFull);
assert( rc==LSM_OK || zFull==0 );
/* Connect to the database. */
if( rc==LSM_OK ){
rc = lsmDbDatabaseConnect(pDb, zFull);
}
if( pDb->bReadonly==0 ){
/* Configure the file-system connection with the page-size and block-size
** of this database. Even if the database file is zero bytes in size
** on disk, these values have been set in shared-memory by now, and so
** are guaranteed not to change during the lifetime of this connection.
*/
if( rc==LSM_OK && LSM_OK==(rc = lsmCheckpointLoad(pDb, 0)) ){
lsmFsSetPageSize(pDb->pFS, lsmCheckpointPgsz(pDb->aSnapshot));
lsmFsSetBlockSize(pDb->pFS, lsmCheckpointBlksz(pDb->aSnapshot));
}
}
lsmFree(pDb->pEnv, zFull);
assertRwclientLockValue(pDb);
}
assert( pDb->bReadonly==0 || pDb->bReadonly==1 );
assert( rc!=LSM_OK || (pDb->pShmhdr==0)==(pDb->bReadonly==1) );
return rc;
}