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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
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*
* 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).
*
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package com.sun.tools.visualvm.sampler.cpu;
import java.lang.management.ThreadInfo;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
*
* @author Tomas Hurka
*/
class ThreadsCPUInfo {
private List<ThreadInfo> threads = new ArrayList();
private List<Long> cputime = new ArrayList();
private Map<Long,Long> cputimeMap;
private long totalCPUTime;
private long timestamp;
private long totalDiffCPUTime;
ThreadsCPUInfo(long time, ThreadInfo[] tinfo, long[] cpuinfo) {
cputimeMap = new HashMap(threads.size()*4/3);
totalCPUTime = 0;
for (int i = 0; i <tinfo.length; i++) {
ThreadInfo ti = tinfo[i];
if (ti != null) {
threads.add(ti);
cputime.add(cpuinfo[i]);
cputimeMap.put(ti.getThreadId(),cpuinfo[i]);
totalCPUTime+=cpuinfo[i];
}
}
timestamp = time;
}
List<ThreadInfo> getThreads() {
return threads;
}
List<Long> getThreadCPUTime() {
return cputime;
}
long getTotalCPUTime() {
return totalCPUTime;
}
List<Long> getThreadCPUTimeDiff(ThreadsCPUInfo info) {
List<Long> cpuTimeDiff = new ArrayList(threads.size());
List<ThreadInfo> newThreads = info.getThreads();
List<Long> newCPUTime = info.getThreadCPUTime();
totalDiffCPUTime = 0;
for (int i=0; i<newThreads.size(); i++) {
ThreadInfo ti = newThreads.get(i);
Long oldAlloc = cputimeMap.get(ti.getThreadId());
long diff;
if (oldAlloc == null) {
oldAlloc = Long.valueOf(0);
}
diff = newCPUTime.get(i)-oldAlloc;
cpuTimeDiff.add(diff);
totalDiffCPUTime += diff;
}
return cpuTimeDiff;
}
long getTotalDiffCPUTime() {
return totalDiffCPUTime;
}
List<Long> getCPUTimePerSecond(ThreadsCPUInfo newInfo) {
assert newInfo.timestamp >= timestamp;
List<Long> diff = getThreadCPUTimeDiff(newInfo);
double secs = (newInfo.timestamp - timestamp) / 1000.0;
List<Long> diffPerSec = new ArrayList(diff.size());
for (Long d : diff) {
diffPerSec.add(new Long((long)(d/secs)));
}
return diffPerSec;
}
}