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Unified Diff: talk/app/webrtc/java/android/org/webrtc/ThreadUtils.java

Issue 1459123002: Revert of Adding thread timeout for audio recorer thread in Java (Closed) Base URL: https://chromium.googlesource.com/external/webrtc.git@master
Patch Set: Created 5 years, 1 month ago
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Index: talk/app/webrtc/java/android/org/webrtc/ThreadUtils.java
diff --git a/talk/app/webrtc/java/android/org/webrtc/ThreadUtils.java b/talk/app/webrtc/java/android/org/webrtc/ThreadUtils.java
new file mode 100644
index 0000000000000000000000000000000000000000..bd4fa44b9a8f9e7d289fedecc57dc382378b063a
--- /dev/null
+++ b/talk/app/webrtc/java/android/org/webrtc/ThreadUtils.java
@@ -0,0 +1,192 @@
+/*
+ * libjingle
+ * Copyright 2015 Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package org.webrtc;
+
+import android.os.Handler;
+import android.os.SystemClock;
+
+import java.util.concurrent.Callable;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
+final class ThreadUtils {
+ /**
+ * Utility class to be used for checking that a method is called on the correct thread.
+ */
+ public static class ThreadChecker {
+ private Thread thread = Thread.currentThread();
+
+ public void checkIsOnValidThread() {
+ if (thread == null) {
+ thread = Thread.currentThread();
+ }
+ if (Thread.currentThread() != thread) {
+ throw new IllegalStateException("Wrong thread");
+ }
+ }
+
+ public void detachThread() {
+ thread = null;
+ }
+ }
+
+ /**
+ * Utility interface to be used with executeUninterruptibly() to wait for blocking operations
+ * to complete without getting interrupted..
+ */
+ public interface BlockingOperation {
+ void run() throws InterruptedException;
+ }
+
+ /**
+ * Utility method to make sure a blocking operation is executed to completion without getting
+ * interrupted. This should be used in cases where the operation is waiting for some critical
+ * work, e.g. cleanup, that must complete before returning. If the thread is interrupted during
+ * the blocking operation, this function will re-run the operation until completion, and only then
+ * re-interrupt the thread.
+ */
+ public static void executeUninterruptibly(BlockingOperation operation) {
+ boolean wasInterrupted = false;
+ while (true) {
+ try {
+ operation.run();
+ break;
+ } catch (InterruptedException e) {
+ // Someone is asking us to return early at our convenience. We can't cancel this operation,
+ // but we should preserve the information and pass it along.
+ wasInterrupted = true;
+ }
+ }
+ // Pass interruption information along.
+ if (wasInterrupted) {
+ Thread.currentThread().interrupt();
+ }
+ }
+
+ public static boolean joinUninterruptibly(final Thread thread, long timeoutMs) {
+ final long startTimeMs = SystemClock.elapsedRealtime();
+ long timeRemainingMs = timeoutMs;
+ boolean wasInterrupted = false;
+ while (timeRemainingMs > 0) {
+ try {
+ thread.join(timeRemainingMs);
+ break;
+ } catch (InterruptedException e) {
+ // Someone is asking us to return early at our convenience. We can't cancel this operation,
+ // but we should preserve the information and pass it along.
+ wasInterrupted = true;
+ final long elapsedTimeMs = SystemClock.elapsedRealtime() - startTimeMs;
+ timeRemainingMs = timeoutMs - elapsedTimeMs;
+ }
+ }
+ // Pass interruption information along.
+ if (wasInterrupted) {
+ Thread.currentThread().interrupt();
+ }
+ return !thread.isAlive();
+ }
+
+ public static void joinUninterruptibly(final Thread thread) {
+ executeUninterruptibly(new BlockingOperation() {
+ @Override
+ public void run() throws InterruptedException {
+ thread.join();
+ }
+ });
+ }
+
+ public static void awaitUninterruptibly(final CountDownLatch latch) {
+ executeUninterruptibly(new BlockingOperation() {
+ @Override
+ public void run() throws InterruptedException {
+ latch.await();
+ }
+ });
+ }
+
+ public static boolean awaitUninterruptibly(CountDownLatch barrier, long timeoutMs) {
+ final long startTimeMs = SystemClock.elapsedRealtime();
+ long timeRemainingMs = timeoutMs;
+ boolean wasInterrupted = false;
+ boolean result = false;
+ do {
+ try {
+ result = barrier.await(timeRemainingMs, TimeUnit.MILLISECONDS);
+ break;
+ } catch (InterruptedException e) {
+ // Someone is asking us to return early at our convenience. We can't cancel this operation,
+ // but we should preserve the information and pass it along.
+ wasInterrupted = true;
+ final long elapsedTimeMs = SystemClock.elapsedRealtime() - startTimeMs;
+ timeRemainingMs = timeoutMs - elapsedTimeMs;
+ }
+ } while (timeRemainingMs > 0);
+ // Pass interruption information along.
+ if (wasInterrupted) {
+ Thread.currentThread().interrupt();
+ }
+ return result;
+ }
+
+ /**
+ * Post |callable| to |handler| and wait for the result.
+ */
+ public static <V> V invokeUninterruptibly(final Handler handler, final Callable<V> callable) {
+ class Result {
+ public V value;
+ }
+ final Result result = new Result();
+ final CountDownLatch barrier = new CountDownLatch(1);
+ handler.post(new Runnable() {
+ @Override public void run() {
+ try {
+ result.value = callable.call();
+ } catch (Exception e) {
+ throw new RuntimeException("Callable threw exception: " + e);
+ }
+ barrier.countDown();
+ }
+ });
+ awaitUninterruptibly(barrier);
+ return result.value;
+ }
+
+ /**
+ * Post |runner| to |handler| and wait for the result.
+ */
+ public static void invokeUninterruptibly(final Handler handler, final Runnable runner) {
+ final CountDownLatch barrier = new CountDownLatch(1);
+ handler.post(new Runnable() {
+ @Override public void run() {
+ runner.run();
+ barrier.countDown();
+ }
+ });
+ awaitUninterruptibly(barrier);
+ }
+}
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