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annotate src/share/vm/gc_interface/gcCause.hpp @ 7788:dbbe8ce3bfa5
commands: accept 'server0' as a vm, accept version number which have '-...' suffix (-internal, -ea...)
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Wed, 13 Feb 2013 18:33:54 +0100 |
parents | 0b54ffe4c2d3 |
children | f2110083203d |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_GC_INTERFACE_GCCAUSE_HPP |
26 #define SHARE_VM_GC_INTERFACE_GCCAUSE_HPP | |
27 | |
28 #include "memory/allocation.hpp" | |
29 | |
0 | 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 | |
50 /* implementation independent, but reserved for GC use */ | |
51 _no_gc, | |
52 _no_cause_specified, | |
53 _allocation_failure, | |
54 | |
55 /* implementation specific */ | |
56 | |
57 _tenured_generation_full, | |
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58 _metadata_GC_threshold, |
0 | 59 |
60 _cms_generation_full, | |
61 _cms_initial_mark, | |
62 _cms_final_remark, | |
63 | |
64 _old_generation_expanded_on_last_scavenge, | |
65 _old_generation_too_full_to_scavenge, | |
66 _adaptive_size_policy, | |
67 | |
677 | 68 _g1_inc_collection_pause, |
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69 _g1_humongous_allocation, |
342 | 70 |
0 | 71 _last_ditch_collection, |
72 _last_gc_cause | |
73 }; | |
74 | |
75 inline static bool is_user_requested_gc(GCCause::Cause cause) { | |
76 return (cause == GCCause::_java_lang_system_gc || | |
77 cause == GCCause::_jvmti_force_gc); | |
78 } | |
342 | 79 |
0 | 80 inline static bool is_serviceability_requested_gc(GCCause::Cause |
81 cause) { | |
82 return (cause == GCCause::_jvmti_force_gc || | |
83 cause == GCCause::_heap_inspection || | |
84 cause == GCCause::_heap_dump); | |
85 } | |
342 | 86 |
0 | 87 // Return a string describing the GCCause. |
88 static const char* to_string(GCCause::Cause cause); | |
89 }; | |
1972 | 90 |
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91 // Helper class for doing logging that includes the GC Cause |
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92 // as a string. |
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93 class GCCauseString : StackObj { |
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94 private: |
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95 static const int _length = 128; |
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96 char _buffer[_length]; |
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97 int _position; |
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98 |
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99 public: |
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100 GCCauseString(const char* prefix, GCCause::Cause cause) { |
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101 if (PrintGCCause) { |
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102 _position = jio_snprintf(_buffer, _length, "%s (%s) ", prefix, GCCause::to_string(cause)); |
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103 } else { |
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104 _position = jio_snprintf(_buffer, _length, "%s ", prefix); |
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105 } |
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106 assert(_position >= 0 && _position <= _length, |
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107 err_msg("Need to increase the buffer size in GCCauseString? %d", _position)); |
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108 } |
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109 |
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110 GCCauseString& append(const char* str) { |
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111 int res = jio_snprintf(_buffer + _position, _length - _position, "%s", str); |
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112 _position += res; |
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113 assert(res >= 0 && _position <= _length, |
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114 err_msg("Need to increase the buffer size in GCCauseString? %d", res)); |
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115 return *this; |
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116 } |
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117 |
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118 operator const char*() { |
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119 return _buffer; |
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120 } |
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121 }; |
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122 |
1972 | 123 #endif // SHARE_VM_GC_INTERFACE_GCCAUSE_HPP |