From 4ea296e29686154656c380982f987d7b6e1774f0 Mon Sep 17 00:00:00 2001
From: Korey Sewell <ksewell@umich.edu>
Date: Sun, 31 Jan 2010 18:26:54 -0500
Subject: [PATCH] inorder: fetch thread bug dont check total # of threads but
 instead all active threads

---
 src/cpu/inorder/cpu.hh         |  2 +-
 src/cpu/inorder/first_stage.cc | 14 ++++++++------
 2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/src/cpu/inorder/cpu.hh b/src/cpu/inorder/cpu.hh
index f4f7cb390..7ac433723 100644
--- a/src/cpu/inorder/cpu.hh
+++ b/src/cpu/inorder/cpu.hh
@@ -611,7 +611,7 @@ class InOrderCPU : public BaseCPU
         if (numActiveThreads() > 0)
             return activeThreads.front();
         else
-            return -1;
+            return InvalidThreadID;
     }
     
      
diff --git a/src/cpu/inorder/first_stage.cc b/src/cpu/inorder/first_stage.cc
index 1427ca46a..75e13e559 100644
--- a/src/cpu/inorder/first_stage.cc
+++ b/src/cpu/inorder/first_stage.cc
@@ -205,11 +205,12 @@ FirstStage::processInsts(ThreadID tid)
 ThreadID
 FirstStage::getFetchingThread(FetchPriority &fetch_priority)
 {
-    if (numThreads > 1) {
-        switch (fetch_priority) {
+    ThreadID num_active_threads = cpu->numActiveThreads();
 
+    if (num_active_threads > 1) {
+        switch (fetch_priority) {
           case SingleThread:
-            return 0;
+            return cpu->activeThreadId();
 
           case RoundRobin:
             return roundRobin();
@@ -217,7 +218,7 @@ FirstStage::getFetchingThread(FetchPriority &fetch_priority)
           default:
             return InvalidThreadID;
         }
-    } else {
+    } else if (num_active_threads == 1) {
         ThreadID tid = *activeThreads->begin();
 
         if (stageStatus[tid] == Running ||
@@ -226,8 +227,9 @@ FirstStage::getFetchingThread(FetchPriority &fetch_priority)
         } else {
             return InvalidThreadID;
         }
-    }
-
+    } else {
+        return InvalidThreadID;
+    }    
 }
 
 ThreadID
-- 
2.30.2