From 8f78690c51e195e33611bb74a9cef113aa51d352 Mon Sep 17 00:00:00 2001
From: "Maxim.Mossienko" <Maxim.Mossienko@jetbrains.com>
Date: Tue, 22 Jan 2013 12:25:23 +0100
Subject: [PATCH] increase sleep time on idling

---
 .../intellij/util/io/BaseOutputReader.java    | 23 ++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/platform/util/src/com/intellij/util/io/BaseOutputReader.java b/platform/util/src/com/intellij/util/io/BaseOutputReader.java
index 0fd4d3d02e0d..8f62efa44774 100644
--- a/platform/util/src/com/intellij/util/io/BaseOutputReader.java
+++ b/platform/util/src/com/intellij/util/io/BaseOutputReader.java
@@ -57,6 +57,13 @@ public abstract class BaseOutputReader {
 
   protected void doRun() {
     try {
+      final int sleepTimeWhenRead = 1;
+      final int initialSleepTimeWhenIdle = 5;
+      final int maxSleepTimeWhenIdle = 200;
+      final int maxIterationsWithCurrentSleepTime = 50;
+      int iterationsWithCurrentTime = 0;
+      int currentSleepTime = initialSleepTimeWhenIdle;
+
       while (true) {
         boolean read = readAvailable();
 
@@ -64,7 +71,21 @@ public abstract class BaseOutputReader {
           break;
         }
 
-        TimeoutUtil.sleep(read ? 1 : 5); // give other threads a chance
+        // give other threads a chance
+        if (read) currentSleepTime = sleepTimeWhenRead;
+        else if (currentSleepTime == sleepTimeWhenRead) {
+          currentSleepTime = initialSleepTimeWhenIdle;
+          iterationsWithCurrentTime = 0;
+        }
+        else {
+          ++iterationsWithCurrentTime;
+          if (iterationsWithCurrentTime == maxIterationsWithCurrentSleepTime) {
+            iterationsWithCurrentTime = 0;
+            currentSleepTime = Math.min(2* currentSleepTime, maxSleepTimeWhenIdle);
+          }
+        }
+
+        TimeoutUtil.sleep(currentSleepTime);
       }
     }
     catch (IOException e) {