|  | /* | 
|  | *  Copyright 2020 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. | 
|  | */ | 
|  |  | 
|  | #include "rtc_base/system/gcd_helpers.h" | 
|  |  | 
|  | dispatch_queue_t RTCDispatchQueueCreateWithTarget(const char *label, | 
|  | dispatch_queue_attr_t attr, | 
|  | dispatch_queue_t target) { | 
|  | if (@available(iOS 10, macOS 10.12, tvOS 10, watchOS 3, *)) { | 
|  | return dispatch_queue_create_with_target(label, attr, target); | 
|  | } | 
|  | dispatch_queue_t queue = dispatch_queue_create(label, attr); | 
|  | dispatch_set_target_queue(queue, target); | 
|  | return queue; | 
|  | } |