jdk8-mips64-public/hotspot: src/share/vm/services/management.hpp@17c778814856

6811367: Fix code in HeapDumper::dump_heap() to avoid buffer overrun
Summary: Check buffer size before using and use dynamic buffer sizes for subsequent calls.
Reviewed-by: kamg, dholmes

     1 /*

     2  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #ifndef SHARE_VM_SERVICES_MANAGEMENT_HPP

    26 #define SHARE_VM_SERVICES_MANAGEMENT_HPP

    28 #include "memory/allocation.hpp"

    29 #include "runtime/handles.hpp"

    30 #include "runtime/timer.hpp"

    31 #include "services/jmm.h"

    33 class OopClosure;

    34 class ThreadSnapshot;

    36 class Management : public AllStatic {

    37 private:

    38   static PerfVariable*      _begin_vm_creation_time;

    39   static PerfVariable*      _end_vm_creation_time;

    40   static PerfVariable*      _vm_init_done_time;

    41   static jmmOptionalSupport _optional_support;

    42   static TimeStamp          _stamp; // Timestamp since vm init done time

    44   // Management klasses

    45   static klassOop           _sensor_klass;

    46   static klassOop           _threadInfo_klass;

    47   static klassOop           _memoryUsage_klass;

    48   static klassOop           _memoryPoolMXBean_klass;

    49   static klassOop           _memoryManagerMXBean_klass;

    50   static klassOop           _garbageCollectorMXBean_klass;

    51   static klassOop           _managementFactory_klass;

    53   static klassOop load_and_initialize_klass(symbolHandle sh, TRAPS);

    55 public:

    56   static void init();

    57   static void initialize(TRAPS);

    59   static jlong ticks_to_ms(jlong ticks);

    60   static jlong timestamp();

    62   static void  oops_do(OopClosure* f);

    63   static void* get_jmm_interface(int version);

    64   static void  get_optional_support(jmmOptionalSupport* support);

    66   static void get_loaded_classes(JavaThread* cur_thread, GrowableArray<KlassHandle>* klass_handle_array);

    68   static void  record_vm_startup_time(jlong begin, jlong duration);

    69   static void  record_vm_init_completed() {

    70     // Initialize the timestamp to get the current time

    71     _vm_init_done_time->set_value(os::javaTimeMillis());

    73     // Update the timestamp to the vm init done time

    74     _stamp.update();

    75   }

    77   static jlong vm_init_done_time() {

    78     return _vm_init_done_time->get_value();

    79   }

    81   // methods to return a klassOop.

    82   static klassOop java_lang_management_ThreadInfo_klass(TRAPS);

    83   static klassOop java_lang_management_MemoryUsage_klass(TRAPS);

    84   static klassOop java_lang_management_MemoryPoolMXBean_klass(TRAPS);

    85   static klassOop java_lang_management_MemoryManagerMXBean_klass(TRAPS);

    86   static klassOop java_lang_management_GarbageCollectorMXBean_klass(TRAPS);

    87   static klassOop sun_management_Sensor_klass(TRAPS);

    88   static klassOop sun_management_ManagementFactory_klass(TRAPS);

    90   static instanceOop create_thread_info_instance(ThreadSnapshot* snapshot, TRAPS);

    91   static instanceOop create_thread_info_instance(ThreadSnapshot* snapshot, objArrayHandle monitors_array, typeArrayHandle depths_array, objArrayHandle synchronizers_array, TRAPS);

    92 };

    94 class TraceVmCreationTime : public StackObj {

    95 private:

    96   TimeStamp _timer;

    97   jlong     _begin_time;

    99 public:

   100   TraceVmCreationTime() {}

   101   ~TraceVmCreationTime() {}

   103   void start()

   104   { _timer.update_to(0); _begin_time = os::javaTimeMillis(); }

   106   /**

   107    * Only call this if initialization completes successfully; it will

   108    * crash if PerfMemory_exit() has already been called (usually by

   109    * os::shutdown() when there was an initialization failure).

   110    */

   111   void end()

   112   { Management::record_vm_startup_time(_begin_time, _timer.milliseconds()); }

   114 };

   116 #endif // SHARE_VM_SERVICES_MANAGEMENT_HPP

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

src/share/vm/services/management.hpp@17c778814856

src/share/vm/services/management.hpp