jdk

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/*
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 * Copyright (c) 2011, 2019, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#include "precompiled.hpp"
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#include "gc/shared/hSpaceCounters.hpp"
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#include "memory/allocation.inline.hpp"
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#include "memory/resourceArea.hpp"
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#include "runtime/perfData.hpp"
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HSpaceCounters::HSpaceCounters(const char* name_space,
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                               const char* name,
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                               int ordinal,
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                               size_t max_size,
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                               size_t initial_capacity) {
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  if (UsePerfData) {
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    EXCEPTION_MARK;
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    ResourceMark rm;
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    const char* cns =
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      PerfDataManager::name_space(name_space, "space", ordinal);
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    _name_space = NEW_C_HEAP_ARRAY(char, strlen(cns)+1, mtGC);
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    strcpy(_name_space, cns);
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    const char* cname = PerfDataManager::counter_name(_name_space, "name");
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    PerfDataManager::create_string_constant(SUN_GC, cname, name, CHECK);
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    cname = PerfDataManager::counter_name(_name_space, "maxCapacity");
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    PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes,
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                                     (jlong)max_size, CHECK);
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    cname = PerfDataManager::counter_name(_name_space, "capacity");
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    _capacity = PerfDataManager::create_variable(SUN_GC, cname,
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                                                 PerfData::U_Bytes,
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                                                 initial_capacity, CHECK);
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    cname = PerfDataManager::counter_name(_name_space, "used");
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    _used = PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes,
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                                             (jlong) 0, CHECK);
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    cname = PerfDataManager::counter_name(_name_space, "initCapacity");
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    PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes,
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                                     initial_capacity, CHECK);
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  }
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}
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HSpaceCounters::~HSpaceCounters() {
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  FREE_C_HEAP_ARRAY(char, _name_space);
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}
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void HSpaceCounters::update_capacity(size_t v) {
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  _capacity->set_value(v);
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}
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void HSpaceCounters::update_used(size_t v) {
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  _used->set_value(v);
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}
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void HSpaceCounters::update_all(size_t capacity, size_t used) {
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  update_capacity(capacity);
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  update_used(used);
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}
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debug_only(
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  // for security reasons, we do not allow arbitrary reads from
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  // the counters as they may live in shared memory.
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  jlong HSpaceCounters::used() {
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    return _used->get_value();
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  }
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  jlong HSpaceCounters::capacity() {
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    return _used->get_value();
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  }
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)
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