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switched to nanoTime() as offering more monotonicity guarantees and made recoverable from crash

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This commit is contained in:
Alexey Kudravtsev
2017-05-10 17:51:22 +03:00
parent 82afa37894
commit bee8555d68
1 changed files with 15 additions and 13 deletions
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platform/util/src/com/intellij/util/PausesStat.java
+15 -13
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@@ -19,6 +19,7 @@ import com.intellij.util.containers.UnsignedShortArrayList;
import org.jetbrains.annotations.NotNull;
import java.awt.*;
import java.util.concurrent.TimeUnit;
public class PausesStat {
private static final int N_MAX = 100000;
@@ -54,7 +55,7 @@ public class PausesStat {
assertEdt();
assert !started;
assert startTimeStamp == 0 : startTimeStamp;
startTimeStamp = System.currentTimeMillis();
startTimeStamp = System.nanoTime();
started = true;
startDescription = description;
}
@@ -66,29 +67,30 @@ public class PausesStat {
public void finished(@NotNull String description) {
assertEdt();
assert started;
long finishStamp = System.currentTimeMillis();
started = false;
long finishStamp = System.nanoTime();
long startTimeStamp = this.startTimeStamp;
int duration = (int)(finishStamp - startTimeStamp);
if (finishStamp < startTimeStamp || duration < 0) {
int durationMs = (int)TimeUnit.NANOSECONDS.toMillis(finishStamp - startTimeStamp);
this.startTimeStamp = 0;
if (finishStamp < startTimeStamp || durationMs < 0) {
int lastPause = durations.size() == N_MAX ? durations.get((indexToOverwrite -1 + N_MAX) % N_MAX) : durations.get(durations.size()-1);
throw new IllegalStateException("startTimeStamp: " + startTimeStamp
+ "; finishStamp: " + finishStamp
+ "; duration: " + duration
throw new IllegalStateException( "\n"+
"startTimeStamp: " + startTimeStamp +"\n"
+ "; finishStamp: " + finishStamp
+ "; durationMs: " + durationMs
+ "; lastPause: " + lastPause
+ "\n; description: " + description
+ (description.equals(startDescription) ? "" : "\n; startDescription: " + startDescription)
);
}
started = false;
this.startTimeStamp = 0;
duration = Math.min(duration, Short.MAX_VALUE);
if (duration > maxDuration) {
maxDuration = duration;
durationMs = Math.min(durationMs, Short.MAX_VALUE);
if (durationMs > maxDuration) {
maxDuration = durationMs;
maxDurationDescription = description;
}
totalNumberRecorded++;
register(duration);
register(durationMs);
}
public String statistics() {