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/*
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* Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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#include "jfr/jfrEvents.hpp"
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#include "jfr/periodic/jfrOSInterface.hpp"
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#include "memory/allocation.inline.hpp"
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#include "memory/resourceArea.hpp"
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#include "runtime/os.hpp"
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#include "runtime/os_perf.hpp"
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#include "utilities/ostream.hpp"
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#include <stdlib.h> // for environment variables
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#ifdef __APPLE__
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#include <crt_externs.h>
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#define environ (*_NSGetEnviron())
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#endif
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#ifndef environ
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extern char** environ;
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#endif
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static JfrOSInterface* _instance = NULL;
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JfrOSInterface& JfrOSInterface::instance() {
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return *_instance;
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}
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JfrOSInterface* JfrOSInterface::create() {
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assert(_instance == NULL, "invariant");
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_instance = new JfrOSInterface();
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return _instance;
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}
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void JfrOSInterface::destroy() {
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if (_instance != NULL) {
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delete _instance;
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_instance = NULL;
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}
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}
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class JfrOSInterface::JfrOSInterfaceImpl : public JfrCHeapObj {
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friend class JfrOSInterface;
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private:
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CPUInformationInterface* _cpu_info_interface;
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CPUPerformanceInterface* _cpu_perf_interface;
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SystemProcessInterface* _system_process_interface;
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// stub helper
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void functionality_not_implemented(char** str) const;
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JfrOSInterfaceImpl();
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bool initialize();
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~JfrOSInterfaceImpl();
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// cpu info
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int cpu_information(CPUInformation& cpu_info);
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int cpu_load(int which_logical_cpu, double* cpu_load);
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int context_switch_rate(double* rate);
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int cpu_load_total_process(double* cpu_load);
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int cpu_loads_process(double* pjvmUserLoad, double* pjvmKernelLoad, double* psystemTotal);
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// os information
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int os_version(char** os_version) const;
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// environment information
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void generate_environment_variables_events();
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// system processes information
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int system_processes(SystemProcess** system_processes, int* no_of_sys_processes);
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};
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JfrOSInterface::JfrOSInterfaceImpl::JfrOSInterfaceImpl() : _cpu_info_interface(NULL),
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_cpu_perf_interface(NULL),
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_system_process_interface(NULL) {}
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bool JfrOSInterface::JfrOSInterfaceImpl::initialize() {
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_cpu_info_interface = new CPUInformationInterface();
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bool success = _cpu_info_interface != NULL && _cpu_info_interface->initialize();
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if (!success) {
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return false;
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}
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_cpu_perf_interface = new CPUPerformanceInterface();
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success = _cpu_perf_interface != NULL && _cpu_perf_interface->initialize();
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if (!success) {
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return false;
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}
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_system_process_interface = new SystemProcessInterface();
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success = _system_process_interface != NULL && _system_process_interface->initialize();
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return success;
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}
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JfrOSInterface::JfrOSInterfaceImpl::~JfrOSInterfaceImpl(void) {
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if (_cpu_info_interface != NULL) {
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delete _cpu_info_interface;
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_cpu_info_interface = NULL;
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}
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if (_cpu_perf_interface != NULL) {
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delete _cpu_perf_interface;
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_cpu_perf_interface = NULL;
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}
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if (_system_process_interface != NULL) {
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delete _system_process_interface;
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_system_process_interface = NULL;
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}
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}
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int JfrOSInterface::JfrOSInterfaceImpl::cpu_load(int which_logical_cpu, double* cpu_load) {
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return _cpu_perf_interface->cpu_load(which_logical_cpu, cpu_load);
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}
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int JfrOSInterface::JfrOSInterfaceImpl::context_switch_rate(double* rate) {
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return _cpu_perf_interface->context_switch_rate(rate);
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}
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int JfrOSInterface::JfrOSInterfaceImpl::cpu_load_total_process(double* cpu_load) {
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return _cpu_perf_interface->cpu_load_total_process(cpu_load);
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}
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int JfrOSInterface::JfrOSInterfaceImpl::cpu_loads_process(double* pjvmUserLoad,
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double* pjvmKernelLoad,
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double* psystemTotal) {
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return _cpu_perf_interface->cpu_loads_process(pjvmUserLoad, pjvmKernelLoad, psystemTotal);
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}
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int JfrOSInterface::JfrOSInterfaceImpl::cpu_information(CPUInformation& cpu_info) {
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return _cpu_info_interface->cpu_information(cpu_info);
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}
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int JfrOSInterface::JfrOSInterfaceImpl::system_processes(SystemProcess** system_processes, int* no_of_sys_processes) {
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assert(system_processes != NULL, "system_processes pointer is NULL!");
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assert(no_of_sys_processes != NULL, "no_of_sys_processes pointer is NULL!");
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return _system_process_interface->system_processes(system_processes, no_of_sys_processes);
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}
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// assigned char* is RESOURCE_HEAP_ALLOCATED
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// caller need to ensure proper ResourceMark placement.
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int JfrOSInterface::JfrOSInterfaceImpl::os_version(char** os_version) const {
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assert(os_version != NULL, "os_version pointer is NULL!");
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stringStream os_ver_info;
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os::print_os_info_brief(&os_ver_info);
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*os_version = os_ver_info.as_string();
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return OS_OK;
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}
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void JfrOSInterface::JfrOSInterfaceImpl::functionality_not_implemented(char** str) const {
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assert(str != NULL, "address to string is NULL!");
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const char* not_impl = "Functionality_not_implemented";
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const size_t not_impl_len = strlen(not_impl);
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*str = NEW_C_HEAP_ARRAY(char, not_impl_len+1, mtTracing);
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strncpy(*str, not_impl, not_impl_len);
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(*str)[not_impl_len] = '\0';
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}
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JfrOSInterface::JfrOSInterface() {
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_impl = NULL;
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}
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bool JfrOSInterface::initialize() {
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_impl = new JfrOSInterface::JfrOSInterfaceImpl();
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return _impl != NULL && _impl->initialize();
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}
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JfrOSInterface::~JfrOSInterface() {
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if (_impl != NULL) {
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delete _impl;
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_impl = NULL;
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}
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}
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int JfrOSInterface::cpu_information(CPUInformation& cpu_info) {
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return instance()._impl->cpu_information(cpu_info);
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}
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int JfrOSInterface::cpu_load(int which_logical_cpu, double* cpu_load) {
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return instance()._impl->cpu_load(which_logical_cpu, cpu_load);
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}
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int JfrOSInterface::context_switch_rate(double* rate) {
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return instance()._impl->context_switch_rate(rate);
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}
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int JfrOSInterface::cpu_load_total_process(double* cpu_load) {
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return instance()._impl->cpu_load_total_process(cpu_load);
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}
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int JfrOSInterface::cpu_loads_process(double* jvm_user_load, double* jvm_kernel_load, double* system_total_load){
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return instance()._impl->cpu_loads_process(jvm_user_load, jvm_kernel_load, system_total_load);
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}
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int JfrOSInterface::os_version(char** os_version) {
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return instance()._impl->os_version(os_version);
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}
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int JfrOSInterface::generate_initial_environment_variable_events() {
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if (environ == NULL) {
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return OS_ERR;
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}
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if (EventInitialEnvironmentVariable::is_enabled()) {
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// One time stamp for all events, so they can be grouped together
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JfrTicks time_stamp = JfrTicks::now();
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for (char** p = environ; *p != NULL; p++) {
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char* variable = *p;
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char* equal_sign = strchr(variable, '=');
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if (equal_sign != NULL) {
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// Extract key/value
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ResourceMark rm;
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ptrdiff_t key_length = equal_sign - variable;
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char* key = NEW_RESOURCE_ARRAY(char, key_length + 1);
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char* value = equal_sign + 1;
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strncpy(key, variable, key_length);
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key[key_length] = '\0';
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EventInitialEnvironmentVariable event(UNTIMED);
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event.set_endtime(time_stamp);
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event.set_key(key);
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event.set_value(value);
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event.commit();
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}
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}
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}
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return OS_OK;
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}
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int JfrOSInterface::system_processes(SystemProcess** sys_processes, int* no_of_sys_processes) {
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return instance()._impl->system_processes(sys_processes, no_of_sys_processes);
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}
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