Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * Copyright (c) 1997, 2013, 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 "classfile/systemDictionary.hpp"

 #include "gc_interface/collectedHeap.inline.hpp"

 #include "memory/resourceArea.hpp"

 #include "memory/space.hpp"

 #include "oops/oop.inline.hpp"

 #include "oops/oop.inline2.hpp"

 #include "runtime/aprofiler.hpp"

 bool AllocationProfiler::_active = false;

 GrowableArray<Klass*>* AllocationProfiler::_print_array = NULL;

 class AllocProfClosure : public ObjectClosure {

  public:

   void do_object(oop obj) {

     Klass* k = obj->klass();

     k->set_alloc_count(k->alloc_count() + 1);

     k->set_alloc_size(k->alloc_size() + obj->size());

   }

 };

 void AllocationProfiler::iterate_since_last_gc() {

   if (is_active()) {

     AllocProfClosure blk;

     GenCollectedHeap* heap = GenCollectedHeap::heap();

     heap->object_iterate_since_last_GC(&blk);

   }

 }

 void AllocationProfiler::engage() {

   _active = true;

 }

 void AllocationProfiler::disengage() {

   _active = false;

 }

 void AllocationProfiler::add_class_to_array(Klass* k) {

   _print_array->append(k);

 }

 void AllocationProfiler::add_classes_to_array(Klass* k) {

   // Iterate over klass and all array klasses for klass

   k->with_array_klasses_do(&AllocationProfiler::add_class_to_array);

 }

 int AllocationProfiler::compare_classes(Klass** k1, Klass** k2) {

   // Sort by total allocation size

   return (*k2)->alloc_size() - (*k1)->alloc_size();

 }

 int AllocationProfiler::average(size_t alloc_size, int alloc_count) {

   return (int) ((double) (alloc_size * BytesPerWord) / MAX2(alloc_count, 1) + 0.5);

 }

 void AllocationProfiler::sort_and_print_array(size_t cutoff) {

   _print_array->sort(&AllocationProfiler::compare_classes);

   tty->print_cr("________________Size"

                 "__Instances"

                 "__Average"

                 "__Class________________");

   size_t total_alloc_size = 0;

   int total_alloc_count = 0;

   for (int index = 0; index < _print_array->length(); index++) {

     Klass* k = _print_array->at(index);

     size_t alloc_size = k->alloc_size();

     if (alloc_size > cutoff) {

       int alloc_count = k->alloc_count();

 #ifdef PRODUCT

       const char* name = k->external_name();

 #else

       const char* name = k->internal_name();

 #endif

       tty->print_cr("%20u %10u %8u  %s",

         alloc_size * BytesPerWord,

         alloc_count,

         average(alloc_size, alloc_count),

         name);

       total_alloc_size += alloc_size;

       total_alloc_count += alloc_count;

     }

     k->set_alloc_count(0);

     k->set_alloc_size(0);

   }

   tty->print_cr("%20u %10u %8u  --total--",

     total_alloc_size * BytesPerWord,

     total_alloc_count,

     average(total_alloc_size, total_alloc_count));

   tty->cr();

 }

 void AllocationProfiler::print(size_t cutoff) {

   ResourceMark rm;

   assert(!is_active(), "AllocationProfiler cannot be active while printing profile");

   tty->cr();

   tty->print_cr("Allocation profile (sizes in bytes, cutoff = " SIZE_FORMAT " bytes):", cutoff * BytesPerWord);

   tty->cr();

   // Print regular instance klasses and basic type array klasses

   _print_array = new GrowableArray<Klass*>(SystemDictionary::number_of_classes()*2);

   SystemDictionary::classes_do(&add_classes_to_array);

   Universe::basic_type_classes_do(&add_classes_to_array);

   sort_and_print_array(cutoff);

   // This used to print metadata in the permgen but since there isn't a permgen

   // anymore, it is not yet implemented.

 }