Mercurial > hg > graal-jvmci-8
diff src/share/vm/memory/metaspaceCounters.cpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author | coleenp |
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date | Sat, 01 Sep 2012 13:25:18 -0400 |
parents | |
children | 5d2156bcb78b |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/memory/metaspaceCounters.cpp Sat Sep 01 13:25:18 2012 -0400 @@ -0,0 +1,164 @@ +/* + * Copyright (c) 2012 Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + * + */ + +#include "precompiled.hpp" +#include "memory/metaspaceCounters.hpp" +#include "memory/resourceArea.hpp" + +#define METASPACE_NAME "perm" + +MetaspaceCounters* MetaspaceCounters::_metaspace_counters = NULL; + +MetaspaceCounters::MetaspaceCounters() { + if (UsePerfData) { + size_t min_capacity = MetaspaceAux::min_chunk_size(); + size_t max_capacity = MetaspaceAux::reserved_in_bytes(); + size_t curr_capacity = MetaspaceAux::capacity_in_bytes(); + size_t used = MetaspaceAux::used_in_bytes(); + + initialize(min_capacity, max_capacity, curr_capacity, used); + } +} + +void MetaspaceCounters::initialize(size_t min_capacity, + size_t max_capacity, + size_t curr_capacity, + size_t used) { + + if (UsePerfData) { + EXCEPTION_MARK; + ResourceMark rm; + + // Create a name that will be recognized by jstat tools as + // the perm gen. Change this to a Metaspace name when the + // tools are fixed. + // name to recognize "sun.gc.generation.2.*" + + const char* name = METASPACE_NAME; + const int ordinal = 2; + const int spaces = 1; + + const char* cns = PerfDataManager::name_space("generation", ordinal); + + _name_space = NEW_C_HEAP_ARRAY(char, strlen(cns)+1, mtClass); + strcpy(_name_space, cns); + + const char* cname = PerfDataManager::counter_name(_name_space, "name"); + PerfDataManager::create_string_constant(SUN_GC, cname, name, CHECK); + + // End of perm gen like name creation + + cname = PerfDataManager::counter_name(_name_space, "spaces"); + PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_None, + spaces, CHECK); + + cname = PerfDataManager::counter_name(_name_space, "minCapacity"); + PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes, + min_capacity, CHECK); + + cname = PerfDataManager::counter_name(_name_space, "maxCapacity"); + PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes, + max_capacity, CHECK); + + cname = PerfDataManager::counter_name(_name_space, "capacity"); + _current_size = + PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes, + curr_capacity, CHECK); + + // SpaceCounter like counters + // name to recognize "sun.gc.generation.2.space.0.*" + { + const int space_ordinal = 0; + const char* cns = PerfDataManager::name_space(_name_space, "space", + space_ordinal); + + char* space_name_space = NEW_C_HEAP_ARRAY(char, strlen(cns)+1, mtClass); + strcpy(space_name_space, cns); + + const char* cname = PerfDataManager::counter_name(space_name_space, "name"); + PerfDataManager::create_string_constant(SUN_GC, cname, name, CHECK); + + cname = PerfDataManager::counter_name(space_name_space, "maxCapacity"); + _max_capacity = PerfDataManager::create_variable(SUN_GC, cname, + PerfData::U_Bytes, + (jlong)max_capacity, CHECK); + + cname = PerfDataManager::counter_name(space_name_space, "capacity"); + _capacity = PerfDataManager::create_variable(SUN_GC, cname, + PerfData::U_Bytes, + curr_capacity, CHECK); + + cname = PerfDataManager::counter_name(space_name_space, "used"); + _used = PerfDataManager::create_variable(SUN_GC, + cname, + PerfData::U_Bytes, + used, + CHECK); + + cname = PerfDataManager::counter_name(space_name_space, "initCapacity"); + PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes, + min_capacity, CHECK); + } + } +} + +void MetaspaceCounters::update_capacity() { + assert(UsePerfData, "Should not be called unless being used"); + size_t capacity_in_bytes = MetaspaceAux::capacity_in_bytes(); + _capacity->set_value(capacity_in_bytes); +} + +void MetaspaceCounters::update_used() { + assert(UsePerfData, "Should not be called unless being used"); + size_t used_in_bytes = MetaspaceAux::used_in_bytes(); + _used->set_value(used_in_bytes); +} + +void MetaspaceCounters::update_max_capacity() { + assert(UsePerfData, "Should not be called unless being used"); + size_t reserved_in_bytes = MetaspaceAux::reserved_in_bytes(); + _max_capacity->set_value(reserved_in_bytes); +} + +void MetaspaceCounters::update_all() { + if (UsePerfData) { + update_used(); + update_capacity(); + update_max_capacity(); + _current_size->set_value(MetaspaceAux::reserved_in_bytes()); + } +} + +void MetaspaceCounters::initialize_performance_counters() { + if (UsePerfData) { + _metaspace_counters = new MetaspaceCounters(); + } +} + +void MetaspaceCounters::update_performance_counters() { + if (UsePerfData) { + _metaspace_counters->update_all(); + } +} +