/* This function generates a sequence of nodes by a depth-first traverse in
* pre-order, this is for verifying if the BST is well balanced. */
int traverseBBSTPreOrder(BBST tree, DQueue lines, int maxcount)
{
BBSTNode p = tree->Root;
DQueueData stack;
initializeDQueue(&stack, tree->Context);
while( stack.NodeCount > 0 || p != NULL ) {
if ( p != NULL ) {
insertDQueueTailNode(lines, p);
insertDQueueHeadNode(&stack, p);
p = p->Left;
if ( maxcount > 0 && getDQueueLength(lines) == maxcount ) {
break;
}
}
else {
p = (BBSTNode)removeDQueueHeadNode(&stack);
p = p->Right;
}
}
removeAllDQueueNodes(&stack);
cleanDQueue(&stack);
return FUNC_RETURN_OK;
}
/******************************************************************************
* I aM Alive.
*
* Request:
* |<----------- 64 bits (8 bytes) ----------->|
* +----------+--------------------------------+
* | TDC | BDC | Reserved |
* +----------+----------+---------------------+
* | |
* | Machine ID info |
* | |
* +-------------------------------------------+ _____ 64bit aligned
*
* Response:
* |<----------- 64 bits (8 bytes) ----------->|
* +---------------------+---------------------+
* | heartbeat result | Reserved |
* +---------------------+---------------------+ _____ 64bit aligned
*
******************************************************************************/
int sendIMAlive(int *errorcode,
char *errorbuf,
int errorbufsize)
{
int res = FUNC_RETURN_OK;
AsyncCommBuffer newcommbuffer = NULL;
Assert( DRMGlobalInstance->LocalHostStat != NULL );
/* Build request. */
SelfMaintainBufferData tosend;
initializeSelfMaintainBuffer(&tosend, PCONTEXT);
RPCRequestHeadIMAliveData requesthead;
requesthead.TmpDirCount = getDQueueLength(&DRMGlobalInstance->LocalHostTempDirectories);
requesthead.TmpDirBrokenCount = DRMGlobalInstance->LocalHostStat->FailedTmpDirNum;
requesthead.Reserved = 0;
appendSMBVar(&tosend, requesthead);
appendSelfMaintainBuffer(&tosend,
(char *)(DRMGlobalInstance->LocalHostStat),
offsetof(SegStatData, Info) +
DRMGlobalInstance->LocalHostStat->Info.Size);
/* Set content to send and add to AsyncComm framework. */
AsyncCommMessageHandlerContext context =
rm_palloc0(AsyncCommContext,
sizeof(AsyncCommMessageHandlerContextData));
context->inMessage = false;
context->UserData = NULL;
context->MessageRecvReadyHandler = NULL;
context->MessageRecvedHandler = receivedIMAliveResponse;
context->MessageSendReadyHandler = NULL;
context->MessageSentHandler = sentIMAlive;
context->MessageErrorHandler = sentIMAliveError;
context->MessageCleanUpHandler = sentIMAliveCleanUp;
/* Connect to HAWQ RM server */
res = registerAsyncConnectionFileDesc(NULL,
DRMGlobalInstance->SendToStandby?
standby_addr_host:
master_addr_host,
rm_master_port,
ASYNCCOMM_READBYTES | ASYNCCOMM_WRITEBYTES,
&AsyncCommBufferHandlersMessage,
context,
&newcommbuffer);
if ( res != FUNC_RETURN_OK )
{
rm_pfree(AsyncCommContext, context);
elog(WARNING, "Fail to register asynchronous connection for sending "
"IMAlive message. %d", res);
return res;
}
buildMessageToCommBuffer(newcommbuffer,
tosend.Buffer,
tosend.Cursor + 1,
REQUEST_RM_IMALIVE,
0,
0);
destroySelfMaintainBuffer(&tosend);
context->AsyncBuffer = newcommbuffer;
InitHandler_Message(newcommbuffer);
return FUNC_RETURN_OK;
}