contrib/sqlite3/sqlite3.c

11097     unsigned viaCoroutine :1;  /* Implemented as a co-routine */
44052 ** fit on a single disk sector. In this case all co-resident pages
65862     } co;
71309 #if 0  /* local variables moved into u.co */
71314 #endif /* local variables moved into u.co */
71319   u.co.pDest = &aMem[pOp->p3];
71320   memAboutToChange(p, u.co.pDest);
71322     sqlite3VdbeMemSetNull(u.co.pDest);
71325   u.co.pVtab = pCur->pVtabCursor->pVtab;
71326   u.co.pModule = u.co.pVtab->pModule;
71327   assert( u.co.pModule->xColumn );
71328   memset(&u.co.sContext, 0, sizeof(u.co.sContext));
71331   ** the current contents to u.co.sContext.s so in case the user-function
71335   sqlite3VdbeMemMove(&u.co.sContext.s, u.co.pDest);
71336   MemSetTypeFlag(&u.co.sContext.s, MEM_Null);
71338   rc = u.co.pModule->xColumn(pCur->pVtabCursor, &u.co.sContext, pOp->p2);
71339   importVtabErrMsg(p, u.co.pVtab);
71340   if( u.co.sContext.isError ){
71341     rc = u.co.sContext.isError;
71346   ** dynamic allocation in u.co.sContext.s (a Mem struct) is  released.
71348   sqlite3VdbeChangeEncoding(&u.co.sContext.s, encoding);
71349   sqlite3VdbeMemMove(u.co.pDest, &u.co.sContext.s);
71350   REGISTER_TRACE(pOp->p3, u.co.pDest);
71351   UPDATE_MAX_BLOBSIZE(u.co.pDest);
71353   if( sqlite3VdbeMemTooBig(u.co.pDest) ){
90429 ** Generate code for a co-routine that will evaluate a subquery one
90432 ** The pSelect parameter is the subquery that the co-routine will evaluation.
90433 ** Information about the location of co-routine and the registers it will use
90439 **                       co-routine.  Run the co-routine to its next breakpoint
90443 **                       co-routine. This register is 0 if the previous Yield
90457 ** co-routine entry-point register reg[pDest->iSDParm], that EOF is the
90488   int regYield;       /* Register holding co-routine entry-point */
90489   int regEof;         /* Register holding co-routine completion flag */
90490   int addrTop;        /* Top of the co-routine */
90762   ** is coming from a SELECT statement, then generate a co-routine that
90764   ** co-routine is the common header to the 3rd and 4th templates.
90767     /* Data is coming from a SELECT.  Generate a co-routine to run that
98174     ** starting at pDest->iSdst.  Then the co-routine yields.
98226 ** co-routines.  Then run the co-routines in parallel and merge the results
100010 **     SRT_Coroutine   Generate a co-routine that returns a new row of
100012 **                     of the co-routine is stored in register pDest->iSDParm.
100109     ** a view or the co-routine to implement a view.  The first instance
100139       /* Implement a co-routine that will return a single row of the result
100149       ** part of the co-routine. If the main routine then accessed the
100150       ** database before invoking the co-routine for the first time (for
106275     /* Cannot index a co-routine */
108583   /* Special case of a FROM clause subquery implemented as a co-routine */
108588     VdbeComment((v, "next row of co-routine %s", pTabItem->pTab->zName));