1 /* 2 * Copyright (c) 2003, 2019, 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 */ 24 25 #ifndef SHARE_SERVICES_MANAGEMENT_HPP 26 #define SHARE_SERVICES_MANAGEMENT_HPP 27 28 #include "jmm.h" 29 #include "memory/allocation.hpp" 30 #include "runtime/handles.hpp" 31 #include "runtime/timer.hpp" 32 33 class OopClosure; 34 class ThreadSnapshot; 35 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 43 44 // Management klasses 45 static InstanceKlass* _diagnosticCommandImpl_klass; 46 static InstanceKlass* _garbageCollectorExtImpl_klass; 47 static InstanceKlass* _garbageCollectorMXBean_klass; 48 static InstanceKlass* _gcInfo_klass; 49 static InstanceKlass* _managementFactoryHelper_klass; 50 static InstanceKlass* _memoryManagerMXBean_klass; 51 static InstanceKlass* _memoryPoolMXBean_klass; 52 static InstanceKlass* _memoryUsage_klass; 53 static InstanceKlass* _sensor_klass; 54 static InstanceKlass* _threadInfo_klass; 55 static InstanceKlass* load_and_initialize_klass(Symbol* sh, TRAPS); 56 static InstanceKlass* load_and_initialize_klass_or_null(Symbol* sh, TRAPS); 57 static InstanceKlass* initialize_klass(Klass* k, TRAPS); 58 59 public: 60 static void init(); 61 static void initialize(TRAPS); 62 63 static jlong ticks_to_ms(jlong ticks) NOT_MANAGEMENT_RETURN_(0L); 64 static jlong timestamp() NOT_MANAGEMENT_RETURN_(0L); 65 66 static void oops_do(OopClosure* f) NOT_MANAGEMENT_RETURN; 67 static void* get_jmm_interface(int version); 68 static void get_optional_support(jmmOptionalSupport* support); 69 70 static void get_loaded_classes(JavaThread* cur_thread, GrowableArray<Klass*>* klass_array); 71 72 static void record_vm_startup_time(jlong begin, jlong duration) 73 NOT_MANAGEMENT_RETURN; record_vm_init_completed()74 static void record_vm_init_completed() { 75 // Initialize the timestamp to get the current time 76 _vm_init_done_time->set_value(os::javaTimeMillis()); 77 78 // Update the timestamp to the vm init done time 79 _stamp.update(); 80 } 81 begin_vm_creation_time()82 static jlong begin_vm_creation_time() { 83 return _begin_vm_creation_time->get_value(); 84 } vm_init_done_time()85 static jlong vm_init_done_time() { 86 return _vm_init_done_time->get_value(); 87 } 88 89 // methods to return a Klass*. 90 static InstanceKlass* java_lang_management_ThreadInfo_klass(TRAPS); 91 static InstanceKlass* java_lang_management_MemoryUsage_klass(TRAPS) 92 NOT_MANAGEMENT_RETURN_(NULL); 93 static InstanceKlass* java_lang_management_MemoryPoolMXBean_klass(TRAPS); 94 static InstanceKlass* java_lang_management_MemoryManagerMXBean_klass(TRAPS); 95 static InstanceKlass* java_lang_management_GarbageCollectorMXBean_klass(TRAPS); 96 static InstanceKlass* sun_management_ManagementFactoryHelper_klass(TRAPS) 97 NOT_MANAGEMENT_RETURN_(NULL); 98 static InstanceKlass* sun_management_Sensor_klass(TRAPS) 99 NOT_MANAGEMENT_RETURN_(NULL); 100 static InstanceKlass* com_sun_management_internal_GarbageCollectorExtImpl_klass(TRAPS) 101 NOT_MANAGEMENT_RETURN_(NULL); 102 static InstanceKlass* com_sun_management_GcInfo_klass(TRAPS) 103 NOT_MANAGEMENT_RETURN_(NULL); 104 static InstanceKlass* com_sun_management_internal_DiagnosticCommandImpl_klass(TRAPS) 105 NOT_MANAGEMENT_RETURN_(NULL); 106 107 static instanceOop create_thread_info_instance(ThreadSnapshot* snapshot, TRAPS); 108 static instanceOop create_thread_info_instance(ThreadSnapshot* snapshot, objArrayHandle monitors_array, typeArrayHandle depths_array, objArrayHandle synchronizers_array, TRAPS); 109 }; 110 111 class TraceVmCreationTime : public StackObj { 112 private: 113 TimeStamp _timer; 114 jlong _begin_time; 115 116 public: TraceVmCreationTime()117 TraceVmCreationTime() {} ~TraceVmCreationTime()118 ~TraceVmCreationTime() {} 119 start()120 void start() 121 { _timer.update_to(0); _begin_time = os::javaTimeMillis(); } 122 begin_time() const123 jlong begin_time() const { 124 return _begin_time; 125 } 126 127 /** 128 * Only call this if initialization completes successfully; it will 129 * crash if PerfMemory_exit() has already been called (usually by 130 * os::shutdown() when there was an initialization failure). 131 */ end()132 void end() 133 { Management::record_vm_startup_time(_begin_time, _timer.milliseconds()); } 134 135 }; 136 137 #endif // SHARE_SERVICES_MANAGEMENT_HPP 138