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J. Duke 2007-12-01 00:00:00 +00:00
parent 686d76f772
commit 8153779ad3
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hotspot/src/share/vm/gc_implementation/parallelScavenge/psMarkSweep.hpp Normal file
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/*
* Copyright 2001-2005 Sun Microsystems, Inc. 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
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
class PSAdaptiveSizePolicy;
class PSYoungGen;
class PSOldGen;
class PSMarkSweep : public MarkSweep {
private:
static elapsedTimer _accumulated_time;
static unsigned int _total_invocations;
static jlong _time_of_last_gc; // ms
static CollectorCounters* _counters;
// Closure accessors
static OopClosure* mark_and_push_closure() { return &MarkSweep::mark_and_push_closure; }
static VoidClosure* follow_stack_closure() { return (VoidClosure*)&MarkSweep::follow_stack_closure; }
static OopClosure* adjust_pointer_closure() { return (OopClosure*)&MarkSweep::adjust_pointer_closure; }
static OopClosure* adjust_root_pointer_closure() { return (OopClosure*)&MarkSweep::adjust_root_pointer_closure; }
static BoolObjectClosure* is_alive_closure() { return (BoolObjectClosure*)&MarkSweep::is_alive; }
debug_only(public:) // Used for PSParallelCompact debugging
// Mark live objects
static void mark_sweep_phase1(bool clear_all_softrefs);
// Calculate new addresses
static void mark_sweep_phase2();
debug_only(private:) // End used for PSParallelCompact debugging
// Update pointers
static void mark_sweep_phase3();
// Move objects to new positions
static void mark_sweep_phase4();
debug_only(public:) // Used for PSParallelCompact debugging
// Temporary data structures for traversal and storing/restoring marks
static void allocate_stacks();
static void deallocate_stacks();
static void set_ref_processor(ReferenceProcessor* rp) { // delete this method
_ref_processor = rp;
}
debug_only(private:) // End used for PSParallelCompact debugging
// If objects are left in eden after a collection, try to move the boundary
// and absorb them into the old gen. Returns true if eden was emptied.
static bool absorb_live_data_from_eden(PSAdaptiveSizePolicy* size_policy,
PSYoungGen* young_gen,
PSOldGen* old_gen);
// Reset time since last full gc
static void reset_millis_since_last_gc();
public:
static void invoke(bool clear_all_softrefs);
static void invoke_no_policy(bool clear_all_softrefs);
static void initialize();
// Public accessors
static elapsedTimer* accumulated_time() { return &_accumulated_time; }
static unsigned int total_invocations() { return _total_invocations; }
static CollectorCounters* counters() { return _counters; }
// Time since last full gc (in milliseconds)
static jlong millis_since_last_gc();
};