Tue, 19 May 2015 15:49:27 +0200
8061715: gc/g1/TestShrinkAuxiliaryData15.java fails with java.lang.RuntimeException: heap decommit failed - after > before
Summary: added WhiteBox methods to count regions and exact aux data sizes
Reviewed-by: jwilhelm, brutisso
1 /*
2 * Copyright (c) 2001, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_VM_OPERATIONS_G1_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_VM_OPERATIONS_G1_HPP
28 #include "gc_implementation/g1/g1AllocationContext.hpp"
29 #include "gc_implementation/shared/vmGCOperations.hpp"
31 // VM_operations for the G1 collector.
32 // VM_GC_Operation:
33 // - VM_CGC_Operation
34 // - VM_G1CollectFull
35 // - VM_G1OperationWithAllocRequest
36 // - VM_G1CollectForAllocation
37 // - VM_G1IncCollectionPause
39 class VM_G1OperationWithAllocRequest : public VM_CollectForAllocation {
40 protected:
41 bool _pause_succeeded;
42 AllocationContext_t _allocation_context;
44 public:
45 VM_G1OperationWithAllocRequest(uint gc_count_before,
46 size_t word_size,
47 GCCause::Cause gc_cause)
48 : VM_CollectForAllocation(word_size, gc_count_before, gc_cause),
49 _pause_succeeded(false) {}
50 bool pause_succeeded() { return _pause_succeeded; }
51 void set_allocation_context(AllocationContext_t context) { _allocation_context = context; }
52 AllocationContext_t allocation_context() { return _allocation_context; }
53 };
55 class VM_G1CollectFull: public VM_GC_Operation {
56 public:
57 VM_G1CollectFull(uint gc_count_before,
58 uint full_gc_count_before,
59 GCCause::Cause cause)
60 : VM_GC_Operation(gc_count_before, cause, full_gc_count_before, true) { }
61 virtual VMOp_Type type() const { return VMOp_G1CollectFull; }
62 virtual void doit();
63 virtual const char* name() const {
64 return "full garbage-first collection";
65 }
66 };
68 class VM_G1CollectForAllocation: public VM_G1OperationWithAllocRequest {
69 public:
70 VM_G1CollectForAllocation(uint gc_count_before,
71 size_t word_size);
72 virtual VMOp_Type type() const { return VMOp_G1CollectForAllocation; }
73 virtual void doit();
74 virtual const char* name() const {
75 return "garbage-first collection to satisfy allocation";
76 }
77 };
79 class VM_G1IncCollectionPause: public VM_G1OperationWithAllocRequest {
80 private:
81 bool _should_initiate_conc_mark;
82 bool _should_retry_gc;
83 double _target_pause_time_ms;
84 uint _old_marking_cycles_completed_before;
85 public:
86 VM_G1IncCollectionPause(uint gc_count_before,
87 size_t word_size,
88 bool should_initiate_conc_mark,
89 double target_pause_time_ms,
90 GCCause::Cause gc_cause);
91 virtual VMOp_Type type() const { return VMOp_G1IncCollectionPause; }
92 virtual bool doit_prologue();
93 virtual void doit();
94 virtual void doit_epilogue();
95 virtual const char* name() const {
96 return "garbage-first incremental collection pause";
97 }
98 bool should_retry_gc() const { return _should_retry_gc; }
99 };
101 // Concurrent GC stop-the-world operations such as remark and cleanup;
102 // consider sharing these with CMS's counterparts.
103 class VM_CGC_Operation: public VM_Operation {
104 VoidClosure* _cl;
105 const char* _printGCMessage;
106 bool _needs_pll;
108 protected:
109 // java.lang.ref.Reference support
110 void acquire_pending_list_lock();
111 void release_and_notify_pending_list_lock();
113 public:
114 VM_CGC_Operation(VoidClosure* cl, const char *printGCMsg, bool needs_pll)
115 : _cl(cl), _printGCMessage(printGCMsg), _needs_pll(needs_pll) { }
116 virtual VMOp_Type type() const { return VMOp_CGC_Operation; }
117 virtual void doit();
118 virtual bool doit_prologue();
119 virtual void doit_epilogue();
120 virtual const char* name() const {
121 return "concurrent gc";
122 }
123 };
125 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_VM_OPERATIONS_G1_HPP