43269   int ofst,              /* First byte of the locking range */  in unixShmSystemLock()  argument
43281   assert( (ofst==UNIX_SHM_DMS && n==1)  in unixShmSystemLock()
43282        || (ofst>=UNIX_SHM_BASE && ofst+n<=(UNIX_SHM_BASE+SQLITE_SHM_NLOCK))  in unixShmSystemLock()
43284   if( ofst==UNIX_SHM_DMS ){  in unixShmSystemLock()
43290     for(ii=ofst-UNIX_SHM_BASE; ii<ofst-UNIX_SHM_BASE+n; ii++){  in unixShmSystemLock()
43304   assert( ofst>=UNIX_SHM_BASE && ofst<=(UNIX_SHM_DMS+SQLITE_SHM_NLOCK) );  in unixShmSystemLock()
43311     f.l_start = ofst;  in unixShmSystemLock()
43328       OSTRACE(("unlock %d..%d ok\n", ofst, ofst+n-1));  in unixShmSystemLock()
43330       OSTRACE(("read-lock %d..%d ok\n", ofst, ofst+n-1));  in unixShmSystemLock()
43333       OSTRACE(("write-lock %d..%d ok\n", ofst, ofst+n-1));  in unixShmSystemLock()
43337       OSTRACE(("unlock %d..%d failed\n", ofst, ofst+n-1));  in unixShmSystemLock()
43339       OSTRACE(("read-lock %d..%d failed\n", ofst, ofst+n-1));  in unixShmSystemLock()
43342       OSTRACE(("write-lock %d..%d failed\n", ofst, ofst+n-1));  in unixShmSystemLock()
43848   int ofst,                  /* First lock to acquire or release */  in unixShmLock()  argument
43856   u16 mask = (1<<(ofst+n)) - (1<<ofst); /* Mask of locks to take or release */  in unixShmLock()
43867   assert( ofst>=0 && ofst+n<=SQLITE_SHM_NLOCK );  in unixShmLock()
43893           (ofst!=2 || lockMask==0)  in unixShmLock()
43894        && (ofst!=1 || lockMask==0 || lockMask==2)  in unixShmLock()
43895        && (ofst!=0 || lockMask<3)  in unixShmLock()
43896        && (ofst<3  || lockMask<(1<<ofst))  in unixShmLock()
43935     for(iMutex=ofst; iMutex<ofst+n; iMutex++){  in unixShmLock()
43961           assert( aLock[ofst]>=1 );  in unixShmLock()
43962           if( aLock[ofst]>1 ){  in unixShmLock()
43964             aLock[ofst]--;  in unixShmLock()
43970           rc = unixShmSystemLock(pDbFd, F_UNLCK, ofst+UNIX_SHM_BASE, n);  in unixShmLock()
43972             memset(&aLock[ofst], 0, sizeof(int)*n);  in unixShmLock()
43980         if( aLock[ofst]<0 ){  in unixShmLock()
43983         }else if( aLock[ofst]==0 ){  in unixShmLock()
43984           rc = unixShmSystemLock(pDbFd, F_RDLCK, ofst+UNIX_SHM_BASE, n);  in unixShmLock()
43990           aLock[ofst]++;  in unixShmLock()
44002         for(ii=ofst; ii<ofst+n; ii++){  in unixShmLock()
44012           rc = unixShmSystemLock(pDbFd, F_WRLCK, ofst+UNIX_SHM_BASE, n);  in unixShmLock()
44015             for(ii=ofst; ii<ofst+n; ii++){  in unixShmLock()
44027     for(iMutex--; iMutex>=ofst; iMutex--){  in unixShmLock()
51644   int ofst,                  /* First lock to acquire or release */
51652   u16 mask = (u16)((1U<<(ofst+n)) - (1U<<ofst)); /* Mask of locks to [un]take */
51658   assert( ofst>=0 && ofst+n<=SQLITE_SHM_NLOCK );
51682           (ofst!=2 || lockMask==0)
51683        && (ofst!=1 || lockMask==0 || lockMask==2)
51684        && (ofst!=0 || lockMask<3)
51685        && (ofst<3  || lockMask<(1<<ofst))
51713       rc = winHandleUnlock(p->hShm, ofst+WIN_SHM_BASE, n);
51723       rc = winHandleLockTimeout(p->hShm, ofst+WIN_SHM_BASE, n, bExcl, nMs);
51737       ofst, n, flags,
60475     i64 ofst = (pgno-1)*(i64)pPager->pageSize;  local
60485     rc = sqlite3OsWrite(pPager->fd, (u8 *)aData, pPager->pageSize, ofst);
221842     unsigned int cnt, ofst;
221847         ofst = rbuDeltaGetInt(&zDelta, &lenDelta);
221858         if( (int)(ofst+cnt) > lenSrc ){
221862         memcpy(zOut, &zSrc[ofst], cnt);
226181 static int rbuVfsShmLock(sqlite3_file *pFile, int ofst, int n, int flags){
226199     if( ofst==WAL_LOCK_CKPT && n==1 ) rc = SQLITE_BUSY;
226206       rc = p->pReal->pMethods->xShmLock(p->pReal, ofst, n, flags);
226208         pRbu->mLock |= ((1<<n) - 1) << ofst;