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8336479: Provide Process.waitFor(Duration)

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Reviewed-by: liach, jpai, rriggs
This commit is contained in:
Naoto Sato 2024-07-22 17:17:46 +00:00
parent 7ea7730564
commit c1c9704268
3 changed files with 115 additions and 2 deletions
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34
src/java.base/share/classes/java/lang/Process.java
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@ -32,6 +32,7 @@ import java.io.*;
import java.lang.ProcessBuilder.Redirect;
import java.nio.charset.Charset;
import java.nio.charset.UnsupportedCharsetException;
import java.time.Duration;
import java.util.Objects;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ForkJoinPool;
@ -475,6 +476,35 @@ public abstract class Process {
return false;
}
/**
* Causes the current thread to wait, if necessary, until the
* process represented by this {@code Process} object has
* terminated, or the specified waiting duration elapses.
*
* <p>If the process has already terminated then this method returns
* immediately with the value {@code true}. If the process has not
* terminated and the duration is not positive, then
* this method returns immediately with the value {@code false}.
*
* <p>The default implementation of this method polls the {@code exitValue}
* to check if the process has terminated. Concrete implementations of this
* class are strongly encouraged to override this method with a more
* efficient implementation.
*
* @param duration the maximum duration to wait; if not positive,
* this method returns immediately.
* @return {@code true} if the process has exited and {@code false} if
* the waiting duration elapsed before the process has exited.
* @throws InterruptedException if the current thread is interrupted
* while waiting.
* @throws NullPointerException if duration is null
* @since 24
*/
public boolean waitFor(Duration duration) throws InterruptedException {
Objects.requireNonNull(duration, "duration");
return waitFor(TimeUnit.NANOSECONDS.convert(duration), TimeUnit.NANOSECONDS);
}
/**
* Returns the exit value for the process.
*
@ -577,8 +607,8 @@ public abstract class Process {
/**
* This is called from the default implementation of
* {@code waitFor(long, TimeUnit)}, which is specified to poll
* {@code exitValue()}.
* {@code waitFor(long, TimeUnit)} and {@code waitFor(Duration)},
* which are specified to poll {@code exitValue()}.
*/
private boolean hasExited() {
try {