1 /* 2 * Copyright (c) 2011, 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 */ 24 25 #ifndef SHARE_VM_GC_G1_G1HRPRINTER_HPP 26 #define SHARE_VM_GC_G1_G1HRPRINTER_HPP 27 28 #include "gc/g1/heapRegion.hpp" 29 #include "logging/log.hpp" 30 #include "memory/allocation.hpp" 31 32 #define SKIP_RETIRED_FULL_REGIONS 1 33 34 class G1HRPrinter VALUE_OBJ_CLASS_SPEC { 35 public: 36 typedef enum { 37 Alloc, 38 AllocForce, 39 Retire, 40 Reuse, 41 CSet, 42 EvacFailure, 43 Cleanup, 44 PostCompaction, 45 Commit, 46 Uncommit 47 } ActionType; 48 49 typedef enum { 50 Unset, 51 Eden, 52 Survivor, 53 Old, 54 SingleHumongous, 55 StartsHumongous, 56 ContinuesHumongous, 57 Archive 58 } RegionType; 59 60 private: 61 static const char* action_name(ActionType action); 62 static const char* region_type_name(RegionType type); 63 64 // Print an action event. This version is used in most scenarios and 65 // only prints the region's bottom. The parameters type and top are 66 // optional (the "not set" values are Unset and NULL). 67 static void print(ActionType action, RegionType type, 68 HeapRegion* hr, HeapWord* top); 69 70 // Print an action event. This version prints both the region's 71 // bottom and end. Used for Commit / Uncommit events. 72 static void print(ActionType action, HeapWord* bottom, HeapWord* end); 73 74 public: 75 // In some places we iterate over a list in order to generate output 76 // for the list's elements. By exposing this we can avoid this 77 // iteration if the printer is not active. 78 const bool is_active() { return log_is_enabled(Trace, gc, region); } 79 80 // The methods below are convenient wrappers for the print() methods. 81 82 void alloc(HeapRegion* hr, RegionType type, bool force = false) { 83 if (is_active()) { 84 print((!force) ? Alloc : AllocForce, type, hr, NULL); 85 } 86 } 87 88 void alloc(RegionType type, HeapRegion* hr, HeapWord* top) { 89 if (is_active()) { 90 print(Alloc, type, hr, top); 91 } 92 } 93 94 void retire(HeapRegion* hr) { 95 if (is_active()) { 96 if (!SKIP_RETIRED_FULL_REGIONS || hr->top() < hr->end()) { 97 print(Retire, Unset, hr, hr->top()); 98 } 99 } 100 } 101 102 void reuse(HeapRegion* hr) { 103 if (is_active()) { 104 print(Reuse, Unset, hr, NULL); 105 } 106 } 107 108 void cset(HeapRegion* hr) { 109 if (is_active()) { 110 print(CSet, Unset, hr, NULL); 111 } 112 } 113 114 void evac_failure(HeapRegion* hr) { 115 if (is_active()) { 116 print(EvacFailure, Unset, hr, NULL); 117 } 118 } 119 120 void cleanup(HeapRegion* hr) { 121 if (is_active()) { 122 print(Cleanup, Unset, hr, NULL); 123 } 124 } 125 126 void post_compaction(HeapRegion* hr, RegionType type) { 127 if (is_active()) { 128 print(PostCompaction, type, hr, hr->top()); 129 } 130 } 131 132 void commit(HeapWord* bottom, HeapWord* end) { 133 if (is_active()) { 134 print(Commit, bottom, end); 135 } 136 } 137 138 void uncommit(HeapWord* bottom, HeapWord* end) { 139 if (is_active()) { 140 print(Uncommit, bottom, end); 141 } 142 } 143 }; 144 145 #endif // SHARE_VM_GC_G1_G1HRPRINTER_HPP