Mon, 09 Aug 2010 05:41:05 -0700
6966222: G1: simplify TaskQueue overflow handling
Reviewed-by: tonyp, ysr
1 /*
2 * Copyright (c) 2001, 2007, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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13 * accompanied this code).
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23 */
25 class ReferenceProcessor;
27 // G1MarkSweep takes care of global mark-compact garbage collection for a
28 // G1CollectedHeap using a four-phase pointer forwarding algorithm. All
29 // generations are assumed to support marking; those that can also support
30 // compaction.
31 //
32 // Class unloading will only occur when a full gc is invoked.
35 class G1MarkSweep : AllStatic {
36 friend class VM_G1MarkSweep;
37 friend class Scavenge;
39 public:
41 static void invoke_at_safepoint(ReferenceProcessor* rp,
42 bool clear_all_softrefs);
44 private:
46 // Mark live objects
47 static void mark_sweep_phase1(bool& marked_for_deopt,
48 bool clear_all_softrefs);
49 // Calculate new addresses
50 static void mark_sweep_phase2();
51 // Update pointers
52 static void mark_sweep_phase3();
53 // Move objects to new positions
54 static void mark_sweep_phase4();
56 static void allocate_stacks();
57 };