From 4e09037e9f8667e1434ca1a42428da2eb8e1b271 Mon Sep 17 00:00:00 2001
From: Jae Kwon <jkwon.work@gmail.com>
Date: Tue, 17 Jun 2014 01:28:43 -0700
Subject: [PATCH] .

---
 blocks/account.go                 |  1 +
 blocks/adjustment.go              |  1 +
 blocks/tx.go                      |  1 +
 common/debounce.go                | 39 +++++++++++++++++++++++++++++++
 blocks/util.go => common/panic.go |  2 +-
 5 files changed, 43 insertions(+), 1 deletion(-)
 create mode 100644 common/debounce.go
 rename blocks/util.go => common/panic.go (87%)

diff --git a/blocks/account.go b/blocks/account.go
index 8f1250849..0758d7b1d 100644
--- a/blocks/account.go
+++ b/blocks/account.go
@@ -1,6 +1,7 @@
 package blocks
 
 import (
+    . "github.com/tendermint/tendermint/common"
     . "github.com/tendermint/tendermint/binary"
     "io"
 )
diff --git a/blocks/adjustment.go b/blocks/adjustment.go
index 070cf63be..548ee60c6 100644
--- a/blocks/adjustment.go
+++ b/blocks/adjustment.go
@@ -1,6 +1,7 @@
 package blocks
 
 import (
+    . "github.com/tendermint/tendermint/common"
     . "github.com/tendermint/tendermint/binary"
     "io"
 )
diff --git a/blocks/tx.go b/blocks/tx.go
index ce940b9f3..4a982618a 100644
--- a/blocks/tx.go
+++ b/blocks/tx.go
@@ -1,6 +1,7 @@
 package blocks
 
 import (
+    . "github.com/tendermint/tendermint/common"
     . "github.com/tendermint/tendermint/binary"
     "io"
 )
diff --git a/common/debounce.go b/common/debounce.go
new file mode 100644
index 000000000..6f5755243
--- /dev/null
+++ b/common/debounce.go
@@ -0,0 +1,39 @@
+package common
+
+import (
+    "time"
+)
+
+/* Debouncer */
+type Debouncer struct {
+    Ch      chan struct{}
+    quit    chan struct{}
+    dur     time.Duration
+    timer   *time.Timer
+}
+
+func NewDebouncer(dur time.Duration) *Debouncer {
+    var timer *time.Timer
+    var ch = make(chan struct{})
+    var quit = make(chan struct{})
+    fire := func() {
+        go func() {
+            select {
+            case ch <- struct{}{}:
+            case <-quit:
+            }
+        }()
+        timer.Reset(dur)
+    }
+    timer = time.AfterFunc(dur, fire)
+    return &Debouncer{Ch:ch, dur:dur, quit:quit, timer:timer}
+}
+
+func (d *Debouncer) Reset() {
+    d.timer.Reset(d.dur)
+}
+
+func (d *Debouncer) Stop() bool {
+    close(d.quit)
+    return d.timer.Stop()
+}
diff --git a/blocks/util.go b/common/panic.go
similarity index 87%
rename from blocks/util.go
rename to common/panic.go
index 03fbd6287..b6cf4f328 100644
--- a/blocks/util.go
+++ b/common/panic.go
@@ -1,4 +1,4 @@
-package blocks
+package common
 
 import (
     "fmt"