|  | /* | 
|  | *  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. | 
|  | */ | 
|  |  | 
|  | #ifndef RTC_BASE_SYSTEM_GCD_HELPERS_H_ | 
|  | #define RTC_BASE_SYSTEM_GCD_HELPERS_H_ | 
|  |  | 
|  | #include <dispatch/dispatch.h> | 
|  |  | 
|  | #ifdef __cplusplus | 
|  | extern "C" { | 
|  | #endif | 
|  |  | 
|  | DISPATCH_RETURNS_RETAINED DISPATCH_WARN_RESULT DISPATCH_NOTHROW dispatch_queue_t | 
|  | RTCDispatchQueueCreateWithTarget(const char* label, | 
|  | dispatch_queue_attr_t attr, | 
|  | dispatch_queue_t target); | 
|  |  | 
|  | #ifdef __cplusplus | 
|  | } | 
|  | #endif | 
|  |  | 
|  | #endif  // RTC_BASE_SYSTEM_GCD_HELPERS_H_ |