Thu, 13 Jun 2013 22:02:40 -0700
8014431: cleanup warnings indicated by the -Wunused-value compiler option on linux
Reviewed-by: dholmes, coleenp
Contributed-by: jeremymanson@google.com, calvin.cheung@oracle.com
coleenp@4037 | 1 | /* |
katleman@4376 | 2 | * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. |
coleenp@4037 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
coleenp@4037 | 4 | * |
coleenp@4037 | 5 | * This code is free software; you can redistribute it and/or modify it |
coleenp@4037 | 6 | * under the terms of the GNU General Public License version 2 only, as |
coleenp@4037 | 7 | * published by the Free Software Foundation. |
coleenp@4037 | 8 | * |
coleenp@4037 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
coleenp@4037 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
coleenp@4037 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
coleenp@4037 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
coleenp@4037 | 13 | * accompanied this code). |
coleenp@4037 | 14 | * |
coleenp@4037 | 15 | * You should have received a copy of the GNU General Public License version |
coleenp@4037 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
coleenp@4037 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
coleenp@4037 | 18 | * |
coleenp@4037 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
coleenp@4037 | 20 | * or visit www.oracle.com if you need additional information or have any |
coleenp@4037 | 21 | * questions. |
coleenp@4037 | 22 | * |
coleenp@4037 | 23 | */ |
coleenp@4037 | 24 | |
coleenp@4037 | 25 | #include "precompiled.hpp" |
coleenp@4037 | 26 | #include "memory/metaspaceCounters.hpp" |
coleenp@4037 | 27 | #include "memory/resourceArea.hpp" |
ehelin@4680 | 28 | #include "utilities/exceptions.hpp" |
coleenp@4037 | 29 | |
coleenp@4037 | 30 | MetaspaceCounters* MetaspaceCounters::_metaspace_counters = NULL; |
coleenp@4037 | 31 | |
jmasa@5015 | 32 | size_t MetaspaceCounters::calc_total_capacity() { |
jmasa@5015 | 33 | // The total capacity is the sum of |
jmasa@5015 | 34 | // 1) capacity of Metachunks in use by all Metaspaces |
jmasa@5015 | 35 | // 2) unused space at the end of each Metachunk |
jmasa@5015 | 36 | // 3) space in the freelist |
jmasa@5015 | 37 | size_t total_capacity = MetaspaceAux::allocated_capacity_bytes() |
jmasa@5015 | 38 | + MetaspaceAux::free_bytes() + MetaspaceAux::free_chunks_total_in_bytes(); |
jmasa@5015 | 39 | return total_capacity; |
jmasa@5015 | 40 | } |
jmasa@5015 | 41 | |
ehelin@4680 | 42 | MetaspaceCounters::MetaspaceCounters() : |
ehelin@4680 | 43 | _capacity(NULL), |
ehelin@4680 | 44 | _used(NULL), |
ehelin@4680 | 45 | _max_capacity(NULL) { |
coleenp@4037 | 46 | if (UsePerfData) { |
coleenp@4037 | 47 | size_t min_capacity = MetaspaceAux::min_chunk_size(); |
coleenp@4037 | 48 | size_t max_capacity = MetaspaceAux::reserved_in_bytes(); |
jmasa@5015 | 49 | size_t curr_capacity = calc_total_capacity(); |
jmasa@5015 | 50 | size_t used = MetaspaceAux::allocated_used_bytes(); |
coleenp@4037 | 51 | |
coleenp@4037 | 52 | initialize(min_capacity, max_capacity, curr_capacity, used); |
coleenp@4037 | 53 | } |
coleenp@4037 | 54 | } |
coleenp@4037 | 55 | |
ehelin@4680 | 56 | static PerfVariable* create_ms_variable(const char *ns, |
ehelin@4680 | 57 | const char *name, |
ehelin@4680 | 58 | size_t value, |
ehelin@4680 | 59 | TRAPS) { |
ehelin@4680 | 60 | const char *path = PerfDataManager::counter_name(ns, name); |
ehelin@4680 | 61 | PerfVariable *result = |
ehelin@4680 | 62 | PerfDataManager::create_variable(SUN_GC, path, PerfData::U_Bytes, value, |
ehelin@4680 | 63 | CHECK_NULL); |
ehelin@4680 | 64 | return result; |
ehelin@4680 | 65 | } |
ehelin@4680 | 66 | |
ehelin@4680 | 67 | static void create_ms_constant(const char *ns, |
ehelin@4680 | 68 | const char *name, |
ehelin@4680 | 69 | size_t value, |
ehelin@4680 | 70 | TRAPS) { |
ehelin@4680 | 71 | const char *path = PerfDataManager::counter_name(ns, name); |
ehelin@4680 | 72 | PerfDataManager::create_constant(SUN_GC, path, PerfData::U_Bytes, value, CHECK); |
ehelin@4680 | 73 | } |
ehelin@4680 | 74 | |
coleenp@4037 | 75 | void MetaspaceCounters::initialize(size_t min_capacity, |
coleenp@4037 | 76 | size_t max_capacity, |
coleenp@4037 | 77 | size_t curr_capacity, |
coleenp@4037 | 78 | size_t used) { |
coleenp@4037 | 79 | |
coleenp@4037 | 80 | if (UsePerfData) { |
coleenp@4037 | 81 | EXCEPTION_MARK; |
coleenp@4037 | 82 | ResourceMark rm; |
coleenp@4037 | 83 | |
ehelin@4680 | 84 | const char *ms = "metaspace"; |
coleenp@4037 | 85 | |
ehelin@4680 | 86 | create_ms_constant(ms, "minCapacity", min_capacity, CHECK); |
ehelin@4680 | 87 | _max_capacity = create_ms_variable(ms, "maxCapacity", max_capacity, CHECK); |
ehelin@4680 | 88 | _capacity = create_ms_variable(ms, "capacity", curr_capacity, CHECK); |
ehelin@4680 | 89 | _used = create_ms_variable(ms, "used", used, CHECK); |
coleenp@4037 | 90 | } |
coleenp@4037 | 91 | } |
coleenp@4037 | 92 | |
coleenp@4037 | 93 | void MetaspaceCounters::update_capacity() { |
coleenp@4037 | 94 | assert(UsePerfData, "Should not be called unless being used"); |
jmasa@5015 | 95 | size_t total_capacity = calc_total_capacity(); |
jmasa@5015 | 96 | _capacity->set_value(total_capacity); |
coleenp@4037 | 97 | } |
coleenp@4037 | 98 | |
coleenp@4037 | 99 | void MetaspaceCounters::update_used() { |
coleenp@4037 | 100 | assert(UsePerfData, "Should not be called unless being used"); |
jmasa@5015 | 101 | size_t used_in_bytes = MetaspaceAux::allocated_used_bytes(); |
coleenp@4037 | 102 | _used->set_value(used_in_bytes); |
coleenp@4037 | 103 | } |
coleenp@4037 | 104 | |
coleenp@4037 | 105 | void MetaspaceCounters::update_max_capacity() { |
coleenp@4037 | 106 | assert(UsePerfData, "Should not be called unless being used"); |
ehelin@4680 | 107 | assert(_max_capacity != NULL, "Should be initialized"); |
coleenp@4037 | 108 | size_t reserved_in_bytes = MetaspaceAux::reserved_in_bytes(); |
coleenp@4037 | 109 | _max_capacity->set_value(reserved_in_bytes); |
coleenp@4037 | 110 | } |
coleenp@4037 | 111 | |
coleenp@4037 | 112 | void MetaspaceCounters::update_all() { |
coleenp@4037 | 113 | if (UsePerfData) { |
coleenp@4037 | 114 | update_used(); |
coleenp@4037 | 115 | update_capacity(); |
coleenp@4037 | 116 | update_max_capacity(); |
coleenp@4037 | 117 | } |
coleenp@4037 | 118 | } |
coleenp@4037 | 119 | |
coleenp@4037 | 120 | void MetaspaceCounters::initialize_performance_counters() { |
coleenp@4037 | 121 | if (UsePerfData) { |
ehelin@4680 | 122 | assert(_metaspace_counters == NULL, "Should only be initialized once"); |
coleenp@4037 | 123 | _metaspace_counters = new MetaspaceCounters(); |
coleenp@4037 | 124 | } |
coleenp@4037 | 125 | } |
coleenp@4037 | 126 | |
coleenp@4037 | 127 | void MetaspaceCounters::update_performance_counters() { |
coleenp@4037 | 128 | if (UsePerfData) { |
ehelin@4680 | 129 | assert(_metaspace_counters != NULL, "Should be initialized"); |
coleenp@4037 | 130 | _metaspace_counters->update_all(); |
coleenp@4037 | 131 | } |
coleenp@4037 | 132 | } |
coleenp@4037 | 133 |