1 /* 2 * Copyright (c) 2012, 2018, 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_VM_JFR_PERIODIC_JFROSINTERFACE_HPP 26 #define SHARE_VM_JFR_PERIODIC_JFROSINTERFACE_HPP 27 28 #include "jfr/utilities/jfrAllocation.hpp" 29 30 class CPUInformation; 31 // XXX 32 //class EnvironmentVariable; 33 class NetworkInterface; 34 class SystemProcess; 35 36 class JfrOSInterface: public JfrCHeapObj { 37 friend class JfrRecorder; 38 private: 39 class JfrOSInterfaceImpl; 40 JfrOSInterfaceImpl* _impl; 41 42 JfrOSInterface(); 43 ~JfrOSInterface(); 44 bool initialize(); 45 static JfrOSInterface& instance(); 46 static JfrOSInterface* create(); 47 static void destroy(); 48 49 public: 50 static int cpu_information(CPUInformation& cpu_info); 51 static int cpu_load(int which_logical_cpu, double* cpu_load); 52 static int context_switch_rate(double* rate); 53 static int cpu_load_total_process(double* cpu_load); 54 static int cpu_loads_process(double* pjvmUserLoad, double* pjvmKernelLoad, double* psystemTotalLoad); 55 static int os_version(char** os_version); 56 static const char* virtualization_name(); 57 static int generate_initial_environment_variable_events(); 58 static int system_processes(SystemProcess** system_processes, int* no_of_sys_processes); 59 static int network_utilization(NetworkInterface** network_interfaces); 60 }; 61 62 #endif // SHARE_VM_JFR_PERIODIC_JFROSINTERFACE_HPP