1 /*
2 * Copyright (c) 2002, 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 *
61 /* implementation specific */
62
63 _tenured_generation_full,
64 _metadata_GC_threshold,
65 _metadata_GC_clear_soft_refs,
66
67 _cms_generation_full,
68 _cms_initial_mark,
69 _cms_final_remark,
70 _cms_concurrent_mark,
71
72 _old_generation_expanded_on_last_scavenge,
73 _old_generation_too_full_to_scavenge,
74 _adaptive_size_policy,
75
76 _g1_inc_collection_pause,
77 _g1_humongous_allocation,
78
79 _dcmd_gc_run,
80
81 _z_timer,
82 _z_warmup,
83 _z_allocation_rate,
84 _z_allocation_stall,
85 _z_proactive,
86
87 _last_gc_cause
88 };
89
90 inline static bool is_user_requested_gc(GCCause::Cause cause) {
91 return (cause == GCCause::_java_lang_system_gc ||
92 cause == GCCause::_dcmd_gc_run);
93 }
94
95 inline static bool is_serviceability_requested_gc(GCCause::Cause
96 cause) {
97 return (cause == GCCause::_jvmti_force_gc ||
98 cause == GCCause::_heap_inspection ||
99 cause == GCCause::_heap_dump);
100 }
104 assert(cause != GCCause::_old_generation_too_full_to_scavenge &&
105 cause != GCCause::_old_generation_expanded_on_last_scavenge,
106 "This GCCause may be correct but is not expected yet: %s",
107 to_string(cause));
108 // _tenured_generation_full or _cms_generation_full for full tenured generations
109 // _adaptive_size_policy for a full collection after a young GC
110 // _allocation_failure is the generic cause a collection which could result
111 // in the collection of the tenured generation if there is not enough space
112 // in the tenured generation to support a young GC.
113 return (cause == GCCause::_tenured_generation_full ||
114 cause == GCCause::_cms_generation_full ||
115 cause == GCCause::_adaptive_size_policy ||
116 cause == GCCause::_allocation_failure);
117 }
118
119 // Causes for collection of the young generation
120 inline static bool is_allocation_failure_gc(GCCause::Cause cause) {
121 // _allocation_failure is the generic cause a collection for allocation failure
122 // _adaptive_size_policy is for a collecton done before a full GC
123 return (cause == GCCause::_allocation_failure ||
124 cause == GCCause::_adaptive_size_policy);
125 }
126
127 // Return a string describing the GCCause.
128 static const char* to_string(GCCause::Cause cause);
129 };
130
131 #endif // SHARE_VM_GC_SHARED_GCCAUSE_HPP
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1 /*
2 * Copyright (c) 2002, 2018, 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 *
61 /* implementation specific */
62
63 _tenured_generation_full,
64 _metadata_GC_threshold,
65 _metadata_GC_clear_soft_refs,
66
67 _cms_generation_full,
68 _cms_initial_mark,
69 _cms_final_remark,
70 _cms_concurrent_mark,
71
72 _old_generation_expanded_on_last_scavenge,
73 _old_generation_too_full_to_scavenge,
74 _adaptive_size_policy,
75
76 _g1_inc_collection_pause,
77 _g1_humongous_allocation,
78
79 _dcmd_gc_run,
80
81 _shenandoah_stop_vm,
82 _shenandoah_allocation_failure_evac,
83 _shenandoah_concurrent_gc,
84 _shenandoah_traversal_gc,
85 _shenandoah_upgrade_to_full_gc,
86
87 _z_timer,
88 _z_warmup,
89 _z_allocation_rate,
90 _z_allocation_stall,
91 _z_proactive,
92
93 _last_gc_cause
94 };
95
96 inline static bool is_user_requested_gc(GCCause::Cause cause) {
97 return (cause == GCCause::_java_lang_system_gc ||
98 cause == GCCause::_dcmd_gc_run);
99 }
100
101 inline static bool is_serviceability_requested_gc(GCCause::Cause
102 cause) {
103 return (cause == GCCause::_jvmti_force_gc ||
104 cause == GCCause::_heap_inspection ||
105 cause == GCCause::_heap_dump);
106 }
110 assert(cause != GCCause::_old_generation_too_full_to_scavenge &&
111 cause != GCCause::_old_generation_expanded_on_last_scavenge,
112 "This GCCause may be correct but is not expected yet: %s",
113 to_string(cause));
114 // _tenured_generation_full or _cms_generation_full for full tenured generations
115 // _adaptive_size_policy for a full collection after a young GC
116 // _allocation_failure is the generic cause a collection which could result
117 // in the collection of the tenured generation if there is not enough space
118 // in the tenured generation to support a young GC.
119 return (cause == GCCause::_tenured_generation_full ||
120 cause == GCCause::_cms_generation_full ||
121 cause == GCCause::_adaptive_size_policy ||
122 cause == GCCause::_allocation_failure);
123 }
124
125 // Causes for collection of the young generation
126 inline static bool is_allocation_failure_gc(GCCause::Cause cause) {
127 // _allocation_failure is the generic cause a collection for allocation failure
128 // _adaptive_size_policy is for a collecton done before a full GC
129 return (cause == GCCause::_allocation_failure ||
130 cause == GCCause::_adaptive_size_policy ||
131 cause == GCCause::_shenandoah_allocation_failure_evac);
132 }
133
134 // Return a string describing the GCCause.
135 static const char* to_string(GCCause::Cause cause);
136 };
137
138 #endif // SHARE_VM_GC_SHARED_GCCAUSE_HPP
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