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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /third_party/libwebrtc/sdk/android/src/java/org/webrtc/RefCountDelegate.java | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | third_party/libwebrtc/sdk/android/src/java/org/webrtc/RefCountDelegate.java | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/third_party/libwebrtc/sdk/android/src/java/org/webrtc/RefCountDelegate.java b/third_party/libwebrtc/sdk/android/src/java/org/webrtc/RefCountDelegate.java new file mode 100644 index 0000000000..b9210d26a4 --- /dev/null +++ b/third_party/libwebrtc/sdk/android/src/java/org/webrtc/RefCountDelegate.java @@ -0,0 +1,63 @@ +/* + * Copyright 2018 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +package org.webrtc; + +import androidx.annotation.Nullable; +import java.util.concurrent.atomic.AtomicInteger; + +/** + * Implementation of RefCounted that executes a Runnable once the ref count reaches zero. + */ +class RefCountDelegate implements RefCounted { + private final AtomicInteger refCount = new AtomicInteger(1); + private final @Nullable Runnable releaseCallback; + + /** + * @param releaseCallback Callback that will be executed once the ref count reaches zero. + */ + public RefCountDelegate(@Nullable Runnable releaseCallback) { + this.releaseCallback = releaseCallback; + } + + @Override + public void retain() { + int updated_count = refCount.incrementAndGet(); + if (updated_count < 2) { + throw new IllegalStateException("retain() called on an object with refcount < 1"); + } + } + + @Override + public void release() { + int updated_count = refCount.decrementAndGet(); + if (updated_count < 0) { + throw new IllegalStateException("release() called on an object with refcount < 1"); + } + if (updated_count == 0 && releaseCallback != null) { + releaseCallback.run(); + } + } + + /** + * Tries to retain the object. Can be used in scenarios where it is unknown if the object has + * already been released. Returns true if successful or false if the object was already released. + */ + boolean safeRetain() { + int currentRefCount = refCount.get(); + while (currentRefCount != 0) { + if (refCount.weakCompareAndSet(currentRefCount, currentRefCount + 1)) { + return true; + } + currentRefCount = refCount.get(); + } + return false; + } +} |