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handle overflow more gracefully

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This commit is contained in:
Alexey Kudravtsev
2015-12-28 17:17:49 +03:00
parent 5a0228e1f2
commit 10d6f1c1d0
1 changed files with 11 additions and 11 deletions
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platform/util/src/com/intellij/util/PausesStat.java
+11 -11
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@@ -27,6 +27,7 @@ public class PausesStat {
private int maxDuration;
private Object maxDurationDescription;
private int totalNumberRecorded;
private int indexToOverwrite; // used when pauses.size() == N_MAX and we have to overflow cyclically
public PausesStat(@NotNull String name) {
myName = name;
@@ -35,26 +36,25 @@ public class PausesStat {
private int register() {
int stamp = (int)(System.currentTimeMillis() - epochStart);
pauses.add(stamp);
if (pauses.size()/2 == N_MAX) {
pauses.set(indexToOverwrite, stamp);
indexToOverwrite = (indexToOverwrite + 1) % N_MAX;
}
else {
pauses.add(stamp);
}
return stamp;
}
public void started() {
assert !started;
if (pauses.size() > N_MAX) {
// guard against OOME
int toDelete = N_MAX / 2;
assert toDelete % 2 == 0 : toDelete;
pauses.remove(0, toDelete);
maxDuration = 0;
}
register();
started = true;
}
public void finished(@NotNull String description) {
assert started;
int startStamp = pauses.get(pauses.size() - 1);
int startStamp = pauses.get(pauses.size()/2 == N_MAX ? indexToOverwrite-1 : pauses.size() - 1);
int finishStamp = register();
int duration = finishStamp - startStamp;
started = false;
@@ -77,8 +77,8 @@ public class PausesStat {
duration[i / 2] = thisDuration;
}
return myName + " Statistics:" +
"\nTotal number: " + number + (totalNumberRecorded == number ? "" : " (Total number recorded: "+totalNumberRecorded+")") +
return myName + " Statistics" + (totalNumberRecorded == number ? "" : " ("+totalNumberRecorded+" events was recorded in total, but only last "+number+" are reported here)")+":"+
"\nEvent number: " + number +
"\nTotal time spent: " + total + "ms" +
"\nAverage duration: " + (number == 0 ? 0 : total / number) + "ms" +
"\nMedian duration: " + ArrayUtil.averageAmongMedians(duration, 3) + "ms" +