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/*
* Copyright (c) 2003, 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.
*
*/
#ifndef SHARE_VM_SERVICES_MANAGEMENT_HPP
#define SHARE_VM_SERVICES_MANAGEMENT_HPP
#include "memory/allocation.hpp"
#include "runtime/handles.hpp"
#include "runtime/timer.hpp"
#include "services/jmm.h"
class OopClosure;
class ThreadSnapshot;
class Management : public AllStatic {
private:
static PerfVariable* _begin_vm_creation_time;
static PerfVariable* _end_vm_creation_time;
static PerfVariable* _vm_init_done_time;
static jmmOptionalSupport _optional_support;
static TimeStamp _stamp; // Timestamp since vm init done time
// Management klasses
static Klass* _sensor_klass;
static Klass* _threadInfo_klass;
static Klass* _memoryUsage_klass;
static Klass* _memoryPoolMXBean_klass;
static Klass* _memoryManagerMXBean_klass;
static Klass* _garbageCollectorMXBean_klass;
static Klass* _managementFactory_klass;
static Klass* _garbageCollectorImpl_klass;
static Klass* _diagnosticCommandImpl_klass;
static Klass* _managementFactoryHelper_klass;
static Klass* _gcInfo_klass;
static Klass* load_and_initialize_klass(Symbol* sh, TRAPS);
public:
static void init();
static void initialize(TRAPS);
static jlong ticks_to_ms(jlong ticks) NOT_MANAGEMENT_RETURN_(0L);
static jlong timestamp() NOT_MANAGEMENT_RETURN_(0L);
static void oops_do(OopClosure* f) NOT_MANAGEMENT_RETURN;
static void* get_jmm_interface(int version);
static void get_optional_support(jmmOptionalSupport* support);
static void get_loaded_classes(JavaThread* cur_thread, GrowableArray<KlassHandle>* klass_handle_array);
static void record_vm_startup_time(jlong begin, jlong duration)
NOT_MANAGEMENT_RETURN;
static void record_vm_init_completed() {
// Initialize the timestamp to get the current time
_vm_init_done_time->set_value(os::javaTimeMillis());
// Update the timestamp to the vm init done time
_stamp.update();
}
static jlong begin_vm_creation_time() {
return _begin_vm_creation_time->get_value();
}
static jlong vm_init_done_time() {
return _vm_init_done_time->get_value();
}
// methods to return a Klass*.
static Klass* java_lang_management_ThreadInfo_klass(TRAPS);
static Klass* java_lang_management_MemoryUsage_klass(TRAPS)
NOT_MANAGEMENT_RETURN_(NULL);
static Klass* java_lang_management_MemoryPoolMXBean_klass(TRAPS);
static Klass* java_lang_management_MemoryManagerMXBean_klass(TRAPS);
static Klass* java_lang_management_GarbageCollectorMXBean_klass(TRAPS);
static Klass* sun_management_Sensor_klass(TRAPS)
NOT_MANAGEMENT_RETURN_(NULL);
static Klass* sun_management_ManagementFactory_klass(TRAPS)
NOT_MANAGEMENT_RETURN_(NULL);
static Klass* sun_management_GarbageCollectorImpl_klass(TRAPS)
NOT_MANAGEMENT_RETURN_(NULL);
static Klass* com_sun_management_GcInfo_klass(TRAPS)
NOT_MANAGEMENT_RETURN_(NULL);
static Klass* sun_management_DiagnosticCommandImpl_klass(TRAPS)
NOT_MANAGEMENT_RETURN_(NULL);
static Klass* sun_management_ManagementFactoryHelper_klass(TRAPS)
NOT_MANAGEMENT_RETURN_(NULL);
static instanceOop create_thread_info_instance(ThreadSnapshot* snapshot, TRAPS);
static instanceOop create_thread_info_instance(ThreadSnapshot* snapshot, objArrayHandle monitors_array, typeArrayHandle depths_array, objArrayHandle synchronizers_array, TRAPS);
};
class TraceVmCreationTime : public StackObj {
private:
TimeStamp _timer;
jlong _begin_time;
public:
TraceVmCreationTime() {}
~TraceVmCreationTime() {}
void start()
{ _timer.update_to(0); _begin_time = os::javaTimeMillis(); }
/**
* Only call this if initialization completes successfully; it will
* crash if PerfMemory_exit() has already been called (usually by
* os::shutdown() when there was an initialization failure).
*/
void end()
{ Management::record_vm_startup_time(_begin_time, _timer.milliseconds()); }
};
#endif // SHARE_VM_SERVICES_MANAGEMENT_HPP
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