duke@435: /*
hseigel@4465:  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #include "precompiled.hpp"
stefank@2314: #include "classfile/systemDictionary.hpp"
stefank@2314: #include "gc_interface/collectedHeap.inline.hpp"
stefank@2314: #include "memory/resourceArea.hpp"
stefank@2314: #include "memory/space.hpp"
stefank@2314: #include "oops/oop.inline.hpp"
stefank@2314: #include "oops/oop.inline2.hpp"
stefank@2314: #include "runtime/aprofiler.hpp"
duke@435: 
duke@435: 
duke@435: bool AllocationProfiler::_active = false;
coleenp@4037: GrowableArray<Klass*>* AllocationProfiler::_print_array = NULL;
duke@435: 
duke@435: 
duke@435: class AllocProfClosure : public ObjectClosure {
duke@435:  public:
duke@435:   void do_object(oop obj) {
coleenp@4037:     Klass* k = obj->klass();
duke@435:     k->set_alloc_count(k->alloc_count() + 1);
duke@435:     k->set_alloc_size(k->alloc_size() + obj->size());
duke@435:   }
duke@435: };
duke@435: 
duke@435: 
duke@435: void AllocationProfiler::iterate_since_last_gc() {
duke@435:   if (is_active()) {
duke@435:     AllocProfClosure blk;
duke@435:     GenCollectedHeap* heap = GenCollectedHeap::heap();
duke@435:     heap->object_iterate_since_last_GC(&blk);
duke@435:   }
duke@435: }
duke@435: 
duke@435: 
duke@435: void AllocationProfiler::engage() {
duke@435:   _active = true;
duke@435: }
duke@435: 
duke@435: 
duke@435: void AllocationProfiler::disengage() {
duke@435:   _active = false;
duke@435: }
duke@435: 
duke@435: 
coleenp@4037: void AllocationProfiler::add_class_to_array(Klass* k) {
duke@435:   _print_array->append(k);
duke@435: }
duke@435: 
duke@435: 
coleenp@4037: void AllocationProfiler::add_classes_to_array(Klass* k) {
duke@435:   // Iterate over klass and all array klasses for klass
coleenp@4037:   k->with_array_klasses_do(&AllocationProfiler::add_class_to_array);
duke@435: }
duke@435: 
duke@435: 
coleenp@4037: int AllocationProfiler::compare_classes(Klass** k1, Klass** k2) {
duke@435:   // Sort by total allocation size
coleenp@4037:   return (*k2)->alloc_size() - (*k1)->alloc_size();
duke@435: }
duke@435: 
duke@435: 
duke@435: int AllocationProfiler::average(size_t alloc_size, int alloc_count) {
duke@435:   return (int) ((double) (alloc_size * BytesPerWord) / MAX2(alloc_count, 1) + 0.5);
duke@435: }
duke@435: 
duke@435: 
duke@435: void AllocationProfiler::sort_and_print_array(size_t cutoff) {
duke@435:   _print_array->sort(&AllocationProfiler::compare_classes);
duke@435:   tty->print_cr("________________Size"
duke@435:                 "__Instances"
duke@435:                 "__Average"
duke@435:                 "__Class________________");
duke@435:   size_t total_alloc_size = 0;
duke@435:   int total_alloc_count = 0;
duke@435:   for (int index = 0; index < _print_array->length(); index++) {
coleenp@4037:     Klass* k = _print_array->at(index);
coleenp@4037:     size_t alloc_size = k->alloc_size();
duke@435:     if (alloc_size > cutoff) {
coleenp@4037:       int alloc_count = k->alloc_count();
duke@435: #ifdef PRODUCT
coleenp@4037:       const char* name = k->external_name();
duke@435: #else
coleenp@4037:       const char* name = k->internal_name();
duke@435: #endif
duke@435:       tty->print_cr("%20u %10u %8u  %s",
duke@435:         alloc_size * BytesPerWord,
duke@435:         alloc_count,
duke@435:         average(alloc_size, alloc_count),
duke@435:         name);
duke@435:       total_alloc_size += alloc_size;
duke@435:       total_alloc_count += alloc_count;
duke@435:     }
coleenp@4037:     k->set_alloc_count(0);
coleenp@4037:     k->set_alloc_size(0);
duke@435:   }
duke@435:   tty->print_cr("%20u %10u %8u  --total--",
duke@435:     total_alloc_size * BytesPerWord,
duke@435:     total_alloc_count,
duke@435:     average(total_alloc_size, total_alloc_count));
duke@435:   tty->cr();
duke@435: }
duke@435: 
duke@435: 
duke@435: void AllocationProfiler::print(size_t cutoff) {
duke@435:   ResourceMark rm;
duke@435:   assert(!is_active(), "AllocationProfiler cannot be active while printing profile");
duke@435: 
duke@435:   tty->cr();
hseigel@4465:   tty->print_cr("Allocation profile (sizes in bytes, cutoff = " SIZE_FORMAT " bytes):", cutoff * BytesPerWord);
duke@435:   tty->cr();
duke@435: 
duke@435:   // Print regular instance klasses and basic type array klasses
coleenp@4037:   _print_array = new GrowableArray<Klass*>(SystemDictionary::number_of_classes()*2);
duke@435:   SystemDictionary::classes_do(&add_classes_to_array);
duke@435:   Universe::basic_type_classes_do(&add_classes_to_array);
duke@435:   sort_and_print_array(cutoff);
duke@435: 
coleenp@4037:   // This used to print metadata in the permgen but since there isn't a permgen
coleenp@4037:   // anymore, it is not yet implemented.
duke@435: }