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diff src/share/vm/runtime/mutexLocker.hpp @ 2152:0fa27f37d4d4

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6977804: G1: remove the zero-filling thread Summary: This changeset removes the zero-filling thread from G1 and collapses the two free region lists we had before (the "free" and "unclean" lists) into one. The new free list uses the new heap region sets / lists abstractions that we'll ultimately use it to keep track of all regions in the heap. A heap region set was also introduced for the humongous regions. Finally, this change increases the concurrency between the thread that completes freeing regions (after a cleanup pause) and the rest of the system (before we'd have to wait for said thread to complete before allocating a new region). The changest also includes a lot of refactoring and code simplification. Reviewed-by: jcoomes, johnc
author tonyp
date Wed, 19 Jan 2011 19:30:42 -0500
parents f95d63e2154a
children bf8517f4e4d0
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line diff
--- a/src/share/vm/runtime/mutexLocker.hpp	Wed Jan 19 13:04:37 2011 -0800
+++ b/src/share/vm/runtime/mutexLocker.hpp	Wed Jan 19 19:30:42 2011 -0500
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2011, 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
@@ -76,8 +76,6 @@
 extern Monitor* iCMS_lock;                       // CMS incremental mode start/stop notification
 extern Monitor* FullGCCount_lock;                // in support of "concurrent" full gc
 extern Monitor* CMark_lock;                      // used for concurrent mark thread coordination
-extern Monitor* ZF_mon;                          // used for G1 conc zero-fill.
-extern Monitor* Cleanup_mon;                     // used for G1 conc cleanup.
 extern Mutex*   CMRegionStack_lock;              // used for protecting accesses to the CM region stack
 extern Mutex*   SATB_Q_FL_lock;                  // Protects SATB Q
                                                  // buffer free list.
@@ -125,6 +123,9 @@
 extern Mutex*   ParkerFreeList_lock;
 extern Mutex*   OopMapCacheAlloc_lock;           // protects allocation of oop_map caches
 
+extern Mutex*   FreeList_lock;                   // protects the free region list during safepoints
+extern Monitor* SecondaryFreeList_lock;          // protects the secondary free region list
+extern Mutex*   OldSets_lock;                    // protects the old region sets
 extern Mutex*   MMUTracker_lock;                 // protects the MMU
                                                  // tracker data structures
 extern Mutex*   HotCardCache_lock;               // protects the hot card cache