/*
* Copyright ( c ) 2012 , 2019 , 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
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*/
#ifndef SHARE_JFR_PERIODIC_JFROSINTERFACE_HPP
#define SHARE_JFR_PERIODIC_JFROSINTERFACE_HPP
#include "jfr/utilities/jfrAllocation.hpp"
class CPUInformation;
class EnvironmentVariable;
class NetworkInterface;
class SystemProcess;
class JfrOSInterface: public JfrCHeapObj {
friend class JfrRecorder;
private :
class JfrOSInterfaceImpl;
JfrOSInterfaceImpl* _impl;
JfrOSInterface();
~JfrOSInterface();
bool initialize();
static JfrOSInterface& instance();
static JfrOSInterface* create();
static void destroy();
public :
static int cpu_information(CPUInformation& cpu_info);
static int cpu_load(int which_logical_cpu, double * cpu_load);
static int context_switch_rate(double * rate);
static int cpu_load_total_process(double * cpu_load);
static int cpu_loads_process(double * pjvmUserLoad, double * pjvmKernelLoad, double * psystemTotalLoad);
static int os_version(char ** os_version);
static const char * virtualization_name();
static int generate_initial_environment_variable_events();
static int system_processes(SystemProcess** system_processes, int * no_of_sys_processes);
static int network_utilization(NetworkInterface** network_interfaces);
};
#endif // SHARE_JFR_PERIODIC_JFROSINTERFACE_HPP
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