jdk8-mips64-public/hotspot: src/share/vm/memory/classify.cpp@981375ca07b7

     1 /*

     2  * Copyright 2003-2007 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    25 # include "incls/_precompiled.incl"

    26 # include "incls/_classify.cpp.incl"

    29 const char* ClassifyObjectClosure::object_type_name[number_object_types] = {

    30   "unknown",

    31   "instance",

    32   "instanceRef",

    33   "objArray",

    34   "symbol",

    35   "klass",

    36   "instanceKlass",

    37   "method",

    38   "constMethod",

    39   "methodData",

    40   "constantPool",

    41   "constantPoolCache",

    42   "typeArray",

    43   "compiledICHolder"

    44 };

    47 object_type ClassifyObjectClosure::classify_object(oop obj, bool count) {

    48   object_type type = unknown_type;

    50   Klass* k = obj->blueprint();

    52   if (k->as_klassOop() == SystemDictionary::object_klass()) {

    53     tty->print_cr("Found the class!");

    54   }

    56   if (count) {

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

    58   }

    60   if (obj->is_instance()) {

    61     if (k->oop_is_instanceRef()) {

    62       type = instanceRef_type;

    63     } else {

    64       type = instance_type;

    65     }

    66   } else if (obj->is_typeArray()) {

    67     type = typeArray_type;

    68   } else if (obj->is_objArray()) {

    69     type = objArray_type;

    70   } else if (obj->is_symbol()) {

    71     type = symbol_type;

    72   } else if (obj->is_klass()) {

    73     Klass* k = ((klassOop)obj)->klass_part();

    74     if (k->oop_is_instance()) {

    75       type = instanceKlass_type;

    76     } else {

    77       type = klass_type;

    78     }

    79   } else if (obj->is_method()) {

    80     type = method_type;

    81   } else if (obj->is_constMethod()) {

    82     type = constMethod_type;

    83   } else if (obj->is_methodData()) {

    84     ShouldNotReachHere();

    85   } else if (obj->is_constantPool()) {

    86     type = constantPool_type;

    87   } else if (obj->is_constantPoolCache()) {

    88     type = constantPoolCache_type;

    89   } else if (obj->is_compiledICHolder()) {

    90     type = compiledICHolder_type;

    91   } else {

    92     ShouldNotReachHere();

    93   }

    95   assert(type != unknown_type, "found object of unknown type.");

    96   return type;

    97 }

   100 void ClassifyObjectClosure::reset() {

   101   for (int i = 0; i < number_object_types; ++i) {

   102     object_count[i] = 0;

   103     object_size[i] = 0;

   104   }

   105   total_object_count = 0;

   106   total_object_size = 0;

   107 }

   110 void ClassifyObjectClosure::do_object(oop obj) {

   111   int i = classify_object(obj, true);

   112   ++object_count[i];

   113   ++total_object_count;

   114   size_t size = obj->size() * HeapWordSize;

   115   object_size[i] += size;

   116   total_object_size += size;

   117 }

   120 size_t ClassifyObjectClosure::print() {

   121   int num_objects = 0;

   122   size_t size_objects = 0;

   123   for (int i = 0; i < number_object_types; ++i) {

   124     if (object_count[i] != 0) {

   125       tty->print_cr("%8d  %-22s  (%8d bytes, %5.2f bytes/object)",

   126                     object_count[i], object_type_name[i], object_size[i],

   127                     (float)object_size[i]/(float)object_count[i]);

   128     }

   129     num_objects += object_count[i];

   130     size_objects += object_size[i];

   131   }

   132   assert(num_objects == total_object_count, "Object count mismatch!");

   133   assert(size_objects == total_object_size, "Object size mismatch!");

   135   tty->print_cr(" Total:  %d objects, %d bytes", total_object_count,

   136                 total_object_size);

   137   return total_object_size;

   138 }

   141 void ClassifyInstanceKlassClosure::do_object(oop obj) {

   142   int type = classify_object(obj, false);

   143   if (type == instanceKlass_type || type == klass_type) {

   144     Klass* k = ((klassOop)obj)->klass_part();

   145     if (k->alloc_count() > 0) {

   146       ResourceMark rm;

   147       const char *name;

   148       if (k->name() == NULL) {

   150         if (obj == Universe::klassKlassObj()) {

   151           name = "_klassKlassObj";

   152         } else if (obj == Universe::arrayKlassKlassObj()) {

   153           name = "_arrayKlassKlassObj";

   154         } else if (obj == Universe::objArrayKlassKlassObj()) {

   155           name = "_objArrayKlassKlassObj";

   156         } else if (obj == Universe::typeArrayKlassKlassObj()) {

   157           name = "_typeArrayKlassKlassObj";

   158         } else if (obj == Universe::instanceKlassKlassObj()) {

   159           name = "_instanceKlassKlassObj";

   160         } else if (obj == Universe::symbolKlassObj()) {

   161           name = "_symbolKlassObj";

   162         } else if (obj == Universe::methodKlassObj()) {

   163           name = "_methodKlassObj";

   164         } else if (obj == Universe::constMethodKlassObj()) {

   165           name = "_constMethodKlassObj";

   166         } else if (obj == Universe::constantPoolKlassObj()) {

   167           name = "_constantPoolKlassObj";

   168         } else if (obj == Universe::constantPoolCacheKlassObj()) {

   169           name = "_constantPoolCacheKlassObj";

   170         } else if (obj == Universe::compiledICHolderKlassObj()) {

   171           name = "_compiledICHolderKlassObj";

   172         } else if (obj == Universe::systemObjArrayKlassObj()) {

   173           name = "_systemObjArrayKlassObj";

   174         } else {

   175           name = "[unnamed]";

   176         }

   177       } else {

   178         name = k->external_name();

   179       }

   180       tty->print_cr("% 8d  instances of %s", k->alloc_count(), name);

   181     }

   182     total_instances += k->alloc_count();

   183   }

   184 }

   187 void ClassifyInstanceKlassClosure::print() {

   188   tty->print_cr(" Total instances:  %d.", total_instances);

   189 }

   192 void ClassifyInstanceKlassClosure::reset() {

   193   total_instances = 0;

   194 }

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