changeset 30576:463e71cefd8f

8078897: Clean out unused code in G1MMUTracker Reviewed-by: brutisso, jwilhelm, drwhite
author sjohanss
date Thu, 30 Apr 2015 10:14:26 +0200
parents 37221c0258e0
children de9fa7ccc1bc
files hotspot/src/share/vm/gc_implementation/g1/g1MMUTracker.cpp hotspot/src/share/vm/gc_implementation/g1/g1MMUTracker.hpp
diffstat 2 files changed, 2 insertions(+), 43 deletions(-) [+]
line wrap: on
line diff
--- a/hotspot/src/share/vm/gc_implementation/g1/g1MMUTracker.cpp	Wed Apr 29 15:25:41 2015 -0400
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1MMUTracker.cpp	Thu Apr 30 10:14:26 2015 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -76,9 +76,6 @@
 }
 
 void G1MMUTrackerQueue::add_pause(double start, double end, bool gc_thread) {
-  double longest_allowed = longest_pause_internal(start);
-  if (longest_allowed < 0.0)
-    longest_allowed = 0.0;
   double duration = end - start;
 
   remove_expired_entries(end);
@@ -111,41 +108,6 @@
 // this is for trying things out in the future and a couple
 // of other places (debugging)
 
-double G1MMUTrackerQueue::longest_pause(double current_time) {
-  if (_DISABLE_MMU)
-    return _max_gc_time;
-
-  MutexLockerEx x(MMUTracker_lock, Mutex::_no_safepoint_check_flag);
-  remove_expired_entries(current_time);
-
-  return longest_pause_internal(current_time);
-}
-
-double G1MMUTrackerQueue::longest_pause_internal(double current_time) {
-  double target_time = _max_gc_time;
-
-  while( 1 ) {
-    double gc_time =
-      calculate_gc_time(current_time + target_time);
-    double diff = target_time + gc_time - _max_gc_time;
-    if (!is_double_leq_0(diff)) {
-      target_time -= diff;
-      if (is_double_leq_0(target_time)) {
-        target_time = -1.0;
-        break;
-      }
-    } else {
-      break;
-    }
-  }
-
-  return target_time;
-}
-
-// basically the _internal call does not remove expired entries
-// this is for trying things out in the future and a couple
-// of other places (debugging)
-
 double G1MMUTrackerQueue::when_sec(double current_time, double pause_time) {
   if (_DISABLE_MMU)
     return 0.0;
--- a/hotspot/src/share/vm/gc_implementation/g1/g1MMUTracker.hpp	Wed Apr 29 15:25:41 2015 -0400
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1MMUTracker.hpp	Thu Apr 30 10:14:26 2015 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -43,7 +43,6 @@
   G1MMUTracker(double time_slice, double max_gc_time);
 
   virtual void add_pause(double start, double end, bool gc_thread) = 0;
-  virtual double longest_pause(double current_time) = 0;
   virtual double when_sec(double current_time, double pause_time) = 0;
 
   double max_gc_time() {
@@ -122,7 +121,6 @@
   void remove_expired_entries(double current_time);
   double calculate_gc_time(double current_time);
 
-  double longest_pause_internal(double current_time);
   double when_internal(double current_time, double pause_time);
 
 public:
@@ -130,7 +128,6 @@
 
   virtual void add_pause(double start, double end, bool gc_thread);
 
-  virtual double longest_pause(double current_time);
   virtual double when_sec(double current_time, double pause_time);
 };