void TRI_FreeShadowGeneralCursor (void* data) {
TRI_general_cursor_t* cursor = (TRI_general_cursor_t*) data;
TRI_FreeGeneralCursor(cursor);
}
void TRI_CleanupGeneralCursor (TRI_general_cursor_store_t* store,
bool force) {
double compareStamp = TRI_microtime();
size_t deleteCount = 0;
// we need an exclusive lock on the index
TRI_LockSpin(&store->_lock);
if (store->_ids._nrUsed == 0) {
// store is empty, nothing to do!
TRI_UnlockSpin(&store->_lock);
return;
}
LOG_TRACE("cleaning shadows. in store: %ld", (unsigned long) store->_ids._nrUsed);
// loop until there's nothing to delete or
// we have deleted CURSOR_MAX_DELETE elements
while (deleteCount++ < CURSOR_MAX_DELETE || force) {
bool deleted = false;
size_t i;
for (i = 0; i < store->_ids._nrAlloc; i++) {
// enum all cursors
TRI_general_cursor_t* cursor = (TRI_general_cursor_t*) store->_ids._table[i];
if (cursor == NULL) {
continue;
}
TRI_LockSpin(&cursor->_lock);
if (force ||
(cursor->_usage._refCount == 0 &&
(cursor->_usage._isDeleted || cursor->_expires < compareStamp))) {
LOG_TRACE("cleaning cursor %p, id: %llu, rc: %d, expires: %d, deleted: %d",
cursor,
(unsigned long long) cursor->_id,
(int) cursor->_usage._refCount,
(int) cursor->_expires,
(int) cursor->_usage._isDeleted);
TRI_RemoveKeyAssociativePointer(&store->_ids, &cursor->_id);
TRI_UnlockSpin(&cursor->_lock);
TRI_FreeGeneralCursor(cursor);
deleted = true;
// the remove might reposition elements in the container.
// therefore break here and start iteration anew
break;
}
TRI_UnlockSpin(&cursor->_lock);
}
if (! deleted) {
// we did not find anything to delete, so give up
break;
}
}
// release lock
TRI_UnlockSpin(&store->_lock);
}
