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August 10, 2019 15:56
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Get CPU percent of a process using sigar (java)
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| /* | |
| * Copyright (c) 2006 Hyperic, Inc. | |
| * | |
| * Licensed under the Apache License, Version 2.0 (the "License"); | |
| * you may not use this file except in compliance with the License. | |
| * You may obtain a copy of the License at | |
| * | |
| * http://www.apache.org/licenses/LICENSE-2.0 | |
| * | |
| * Unless required by applicable law or agreed to in writing, software | |
| * distributed under the License is distributed on an "AS IS" BASIS, | |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| * See the License for the specific language governing permissions and | |
| * limitations under the License. | |
| */ | |
| import org.hyperic.sigar.*; | |
| /* | |
| Example to show the process state for a given pid. | |
| Compile the example: | |
| % javac -classpath sigar-bin/lib/sigar.jar ProcessState.java | |
| State of the java process running the example: | |
| % java -classpath sigar-bin/lib/sigar.jar:. ProcessState | |
| java: Running | |
| State of the bash shell when invoking the example is running: | |
| % java -classpath sigar-bin/lib/sigar.jar:. ProcessState $$ | |
| bash: Sleeping | |
| State of emacs editor used to write the example: | |
| % java -classpath sigar-bin/lib/sigar.jar:. ProcessState 2673 | |
| emacs: Suspended | |
| See also: examples/Ps.java, examples/Top.java | |
| */ | |
| public class ProcessState { | |
| private static String getStateString(char state) { | |
| switch (state) { | |
| case ProcState.SLEEP: | |
| return "Sleeping"; | |
| case ProcState.RUN: | |
| return "Running"; | |
| case ProcState.STOP: | |
| return "Suspended"; | |
| case ProcState.ZOMBIE: | |
| return "Zombie"; | |
| case ProcState.IDLE: | |
| return "Idle"; | |
| default: | |
| return String.valueOf(state); | |
| } | |
| } | |
| public static void main(String[] args) | |
| throws SigarException { | |
| String pid; | |
| if (args.length == 0) { | |
| pid = "$$"; //default to this process | |
| } | |
| else { | |
| pid = args[0]; | |
| } | |
| Sigar sigar = new Sigar(); | |
| ProcState procState = sigar.getProcState(pid); | |
| String state; | |
| System.out.println(procState.getName() + ": " + | |
| getStateString(procState.getState())); | |
| ProcExe exe = sigar.getProcExe(pid); | |
| System.out.println(exe.getName() + " " + exe.getCwd()); | |
| System.out.println(sigar.getProcCpu(pid).getPercent()); | |
| sigar.close(); | |
| } | |
| } |
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