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8305092: Improve Thread.sleep(millis, nanos) for sub-millisecond granularity

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Reviewed-by: dholmes, alanb
This commit is contained in:
Aleksey Shipilev 2023-05-03 09:39:57 +00:00
parent 891530fbc9
commit fcb280a48b
11 changed files with 245 additions and 28 deletions
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17
src/java.base/share/classes/java/lang/Thread.java
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@ -506,14 +506,14 @@ public class Thread implements Runnable {
if (currentThread() instanceof VirtualThread vthread) {
vthread.sleepNanos(nanos);
} else {
sleep0(millis);
sleep0(nanos);
}
} finally {
afterSleep(event);
}
}
private static native void sleep0(long millis) throws InterruptedException;
private static native void sleep0(long nanos) throws InterruptedException;
/**
* Causes the currently executing thread to sleep (temporarily cease
@ -555,11 +555,7 @@ public class Thread implements Runnable {
if (currentThread() instanceof VirtualThread vthread) {
vthread.sleepNanos(totalNanos);
} else {
// millisecond precision
if (nanos > 0 && millis < Long.MAX_VALUE) {
millis++;
}
sleep0(millis);
sleep0(totalNanos);
}
} finally {
afterSleep(event);
@ -593,12 +589,7 @@ public class Thread implements Runnable {
if (currentThread() instanceof VirtualThread vthread) {
vthread.sleepNanos(nanos);
} else {
// millisecond precision
long millis = NANOSECONDS.toMillis(nanos);
if (nanos > MILLISECONDS.toNanos(millis)) {
millis += 1L;
}
sleep0(millis);
sleep0(nanos);
}
} finally {
afterSleep(event);