From 83e27ae7dbfdca779e9f6b7db148fb295481030e Mon Sep 17 00:00:00 2001
From: Josh Rickmar <jrick@conformal.com>
Date: Tue, 17 Jun 2014 08:38:34 -0500
Subject: [PATCH] Remove unused goroutine.

---
 cmd.go       |  3 ---
 rpcclient.go | 13 -----------
 rpcserver.go | 62 ----------------------------------------------------
 3 files changed, 78 deletions(-)

diff --git a/cmd.go b/cmd.go
index 909371e..e1bd652 100644
--- a/cmd.go
+++ b/cmd.go
@@ -185,9 +185,6 @@ func main() {
 	go StoreNotifiedMempoolRecvTxs(NotifiedRecvTxChans.add,
 		NotifiedRecvTxChans.remove,
 		NotifiedRecvTxChans.access)
-	go NotifyBalanceSyncer(NotifyBalanceSyncerChans.add,
-		NotifyBalanceSyncerChans.remove,
-		NotifyBalanceSyncerChans.access)
 
 	// Start client connection to a btcd chain server.  Attempt
 	// reconnections if the client could not be successfully connected.
diff --git a/rpcclient.go b/rpcclient.go
index fe2ad22..2d56510 100644
--- a/rpcclient.go
+++ b/rpcclient.go
@@ -127,19 +127,6 @@ func (n blockConnected) handleNotification() error {
 	curBlock.BlockStamp = *bs
 	curBlock.Unlock()
 
-	// btcd notifies btcwallet about transactions first, and then sends
-	// the new block notification.  New balance notifications for txs
-	// in blocks are therefore sent here after all tx notifications
-	// have arrived and finished being processed by the handlers.
-	workers := NotifyBalanceRequest{
-		block: *n.hash,
-		wg:    make(chan *sync.WaitGroup),
-	}
-	NotifyBalanceSyncerChans.access <- workers
-	if wg := <-workers.wg; wg != nil {
-		wg.Wait()
-		NotifyBalanceSyncerChans.remove <- *n.hash
-	}
 	AcctMgr.Grab()
 	AcctMgr.BlockNotify(bs)
 	AcctMgr.Release()
diff --git a/rpcserver.go b/rpcserver.go
index ce6dfa0..3f98191 100644
--- a/rpcserver.go
+++ b/rpcserver.go
@@ -2734,65 +2734,3 @@ func StoreNotifiedMempoolRecvTxs(add, remove chan btcwire.OutPoint,
 		}
 	}
 }
-
-// NotifyBalanceSyncerChans holds channels for accessing
-// the NotifyBalanceSyncer goroutine.
-var NotifyBalanceSyncerChans = struct {
-	add    chan NotifyBalanceWorker
-	remove chan btcwire.ShaHash
-	access chan NotifyBalanceRequest
-}{
-	add:    make(chan NotifyBalanceWorker),
-	remove: make(chan btcwire.ShaHash),
-	access: make(chan NotifyBalanceRequest),
-}
-
-// NotifyBalanceWorker holds a block hash to add a worker to
-// NotifyBalanceSyncer and uses a chan to returns the WaitGroup
-// which should be decremented with Done after the worker is finished.
-type NotifyBalanceWorker struct {
-	block btcwire.ShaHash
-	wg    chan *sync.WaitGroup
-}
-
-// NotifyBalanceRequest is used by the blockconnected notification handler
-// to access and wait on the the WaitGroup for workers currently processing
-// transactions for a block.  If no handlers have been added, a nil
-// WaitGroup is returned.
-type NotifyBalanceRequest struct {
-	block btcwire.ShaHash
-	wg    chan *sync.WaitGroup
-}
-
-// NotifyBalanceSyncer maintains a map of block hashes to WaitGroups
-// for worker goroutines that must finish before it is safe to notify
-// websocket clientss of a new balance in the blockconnected notification
-// handler.
-func NotifyBalanceSyncer(add chan NotifyBalanceWorker,
-	remove chan btcwire.ShaHash,
-	access chan NotifyBalanceRequest) {
-
-	m := make(map[btcwire.ShaHash]*sync.WaitGroup)
-
-	for {
-		select {
-		case worker := <-add:
-			wg, ok := m[worker.block]
-			if !ok {
-				wg = &sync.WaitGroup{}
-				m[worker.block] = wg
-			}
-			wg.Add(1)
-			m[worker.block] = wg
-			worker.wg <- wg
-
-		case block := <-remove:
-			if _, ok := m[block]; ok {
-				delete(m, block)
-			}
-
-		case req := <-access:
-			req.wg <- m[req.block]
-		}
-	}
-}