ZExport(int) ZSqlLink::getCursor(ZSqlCursor **csr)
{
ZFUNCTRACE_DEVELOP("ZSqlLink::getCursor(ZSqlCursor **csr)");
int ret, prio, curr;
int old = -1;
ZSqlCursor *c;
// search for active cursor
for (curr = 0; curr < iCsrCount; curr++) {
c = iCsrPool[curr];
if ( csr == c->iOwner && *csr == c ) {
ret = c->newParseRequired() || c->iInv;
goto gotcursor;
} // if
if (!c->iPrio) old = curr; // remember least busy cursor
} // for
// check if new cursor may be opened
if (iCsrCount < iMaxCursor) {
iCsrPool[iCsrCount] = allocCursor();
curr = iCsrCount;
iCsrPool[curr]->iPrio = iCsrCount++;
} else {
if (old < 0) ZTHROWEXC("Internal error in ZSql.cpp");
curr = old;
iCsrPool[curr]->newParseRequired(); // for DB2 cleanup!
} // if
// save owner signature and return SqlCursor ptr
ret = 1;
c = *csr = iCsrPool[curr];
c->iOwner = csr;
gotcursor:
c->iInv = zFalse;
// mark this cursor most busy
if ( c->iPrio < iCsrCount-1) {
prio = c->iPrio;
c->iPrio = iCsrCount;
for (curr = 0; curr < iCsrCount; curr++) {
c = iCsrPool[curr];
if (c->iPrio >= prio) c->iPrio--;
} // for
} // if
return ret;
} // getCursor
JBoolean
JMMHashTable::_SetRecordDeleted
(
JMMRecord* record,
const void* block,
const JCharacter* file,
const JUInt32 line,
const JBoolean isArray
)
{
JHashCursor<JMMRecord> allocCursor(itsAllocatedTable, reinterpret_cast<JHashValue>(block) );
if ( allocCursor.NextHash() )
{
JMMRecord thisRecord = allocCursor.GetValue();
thisRecord.SetDeleteLocation(file, line, isArray);
itsAllocatedBytes -= thisRecord.GetSize();
if (!thisRecord.ArrayNew() && isArray)
{
NotifyObjectDeletedAsArray(thisRecord);
}
else if (thisRecord.ArrayNew() && !isArray)
{
NotifyArrayDeletedAsObject(thisRecord);
}
allocCursor.Remove();
if (itsDeletedTable != NULL)
{
JHashCursor<JMMRecord> deallocCursor(itsDeletedTable, reinterpret_cast<JHashValue>(block) );
deallocCursor.ForceNextOpen();
deallocCursor.Set(reinterpret_cast<JHashValue>(block), thisRecord);
}
else
{
itsDeletedCount++;
}
*record = thisRecord;
return kJTrue;
}
else
{
if (itsDeletedTable == NULL)
{
NotifyUnallocatedDeletion(file, line, isArray);
}
else
{
JHashCursor<JMMRecord> deallocCursor(itsDeletedTable, reinterpret_cast<JHashValue>(block) );
if ( deallocCursor.NextHash() )
{
// Seek most recent deallocation at that address
JMMRecord previousRecord = deallocCursor.GetValue();
while ( deallocCursor.NextHash() )
{
JMMRecord thisRecord = deallocCursor.GetValue();
if ( thisRecord.GetID() > previousRecord.GetID() )
{
previousRecord = thisRecord;
}
}
NotifyMultipleDeletion(previousRecord, file, line, isArray);
}
else
{
NotifyUnallocatedDeletion(file, line, isArray);
}
}
return kJFalse;
}
}
