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