1 /*
2 * Copyright (c) 2002, 2009, 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 */
24
25 //
26 // This class exposes implementation details of the various
27 // collector(s), and we need to be very careful with it. If
28 // use of this class grows, we should split it into public
29 // and implemenation-private "causes".
30 //
31
32 class GCCause : public AllStatic {
33 public:
34 enum Cause {
35 /* public */
36 _java_lang_system_gc,
37 _full_gc_alot,
38 _scavenge_alot,
39 _allocation_profiler,
40 _jvmti_force_gc,
41 _gc_locker,
42 _heap_inspection,
43 _heap_dump,
44
66 _last_gc_cause
67 };
68
69 inline static bool is_user_requested_gc(GCCause::Cause cause) {
70 return (cause == GCCause::_java_lang_system_gc ||
71 cause == GCCause::_jvmti_force_gc);
72 }
73
74 inline static bool is_serviceability_requested_gc(GCCause::Cause
75 cause) {
76 return (cause == GCCause::_jvmti_force_gc ||
77 cause == GCCause::_heap_inspection ||
78 cause == GCCause::_heap_dump);
79 }
80
81 // Return a string describing the GCCause.
82 static const char* to_string(GCCause::Cause cause);
83 // Return true if the GCCause is for a full collection.
84 static bool is_for_full_collection(GCCause::Cause cause) PRODUCT_RETURN0;
85 };
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1 /*
2 * Copyright (c) 2002, 2010, 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 */
24
25 #ifndef SHARE_VM_GC_INTERFACE_GCCAUSE_HPP
26 #define SHARE_VM_GC_INTERFACE_GCCAUSE_HPP
27
28 #include "memory/allocation.hpp"
29
30 //
31 // This class exposes implementation details of the various
32 // collector(s), and we need to be very careful with it. If
33 // use of this class grows, we should split it into public
34 // and implemenation-private "causes".
35 //
36
37 class GCCause : public AllStatic {
38 public:
39 enum Cause {
40 /* public */
41 _java_lang_system_gc,
42 _full_gc_alot,
43 _scavenge_alot,
44 _allocation_profiler,
45 _jvmti_force_gc,
46 _gc_locker,
47 _heap_inspection,
48 _heap_dump,
49
71 _last_gc_cause
72 };
73
74 inline static bool is_user_requested_gc(GCCause::Cause cause) {
75 return (cause == GCCause::_java_lang_system_gc ||
76 cause == GCCause::_jvmti_force_gc);
77 }
78
79 inline static bool is_serviceability_requested_gc(GCCause::Cause
80 cause) {
81 return (cause == GCCause::_jvmti_force_gc ||
82 cause == GCCause::_heap_inspection ||
83 cause == GCCause::_heap_dump);
84 }
85
86 // Return a string describing the GCCause.
87 static const char* to_string(GCCause::Cause cause);
88 // Return true if the GCCause is for a full collection.
89 static bool is_for_full_collection(GCCause::Cause cause) PRODUCT_RETURN0;
90 };
91
92 #endif // SHARE_VM_GC_INTERFACE_GCCAUSE_HPP
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