void
PQappendNotify(char *relname, int pid)
{
PQNotifyList *p;
if (pqNotifyList == NULL)
pqNotifyList = DLNewList();
p = (PQNotifyList*)pbuf_alloc(sizeof(PQNotifyList));
strncpy(p->relname, relname, NAMEDATALEN);
p->be_pid = pid;
p->valid = 1;
DLAddTail(pqNotifyList, DLNewElem(p));
}
void
PQnotifies_init()
{
Dlelem *e;
PQNotifyList *p;
if (pqNotifyList == NULL) {
pqNotifyList = DLNewList();
}
else {
/* clean all notifies */
for (e = DLGetHead(pqNotifyList); e != NULL; e = DLGetSucc(e)) {
p = (PQNotifyList*)DLE_VAL(e);
p->valid = 0;
}
PQcleanNotify();
}
}
/*
* Create a new cache instance, or attach to an existing one in shared
* memory.
*
* The cache descriptor is allocated in the top memory context since
* we need it for entry cleanup in case of error
*/
Cache *
Cache_Create(CacheCtl *cacheCtl)
{
Assert(NULL != cacheCtl);
Assert(0 != cacheCtl->maxSize);
Assert(0 != cacheCtl->keySize);
Assert(0 != cacheCtl->entrySize);
Assert(NULL != cacheCtl->keyCopy);
Assert(NULL != cacheCtl->hash);
Assert(NULL != cacheCtl->match);
Assert(NULL != cacheCtl->equivalentEntries);
Assert(NULL != cacheCtl->cleanupEntry);
MemoryContext oldcxt;
/*
* Create Cache in the TopMemoryContext since this memory context
* is still available when calling the transaction callback at the
* time when the transaction aborts
*/
oldcxt = MemoryContextSwitchTo(TopMemoryContext);
Cache *cache = (Cache *) palloc0(sizeof(Cache));
cache->keyCopy = cacheCtl->keyCopy;
cache->hash = cacheCtl->hash;
cache->match = cacheCtl->match;
cache->equivalentEntries = cacheCtl->equivalentEntries;
cache->cleanupEntry = cacheCtl->cleanupEntry;
cache->populateEntry = cacheCtl->populateEntry;
/* Create new linked lists in top memory context for cleanup */
cache->ownedEntries = DLNewList();
cache->cacheName = pstrdup(cacheCtl->cacheName);
Cache_InitHashtable(cacheCtl, cache);
Cache_InitSharedMem(cacheCtl, cache);
INSTR_TIME_SET_ZERO(timedOpStart);
oldcxt = MemoryContextSwitchTo(oldcxt);
return cache;
}