| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * 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. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "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 COPYRIGHT |
| * OWNER OR CONTRIBUTORS 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. |
| * |
| */ |
| |
| #import <Foundation/Foundation.h> |
| |
| #import "GRXWriteable.h" |
| #import "GRXWriter.h" |
| |
| /** |
| * A buffered pipe is a Writer that also acts as a Writeable. |
| * Once it is started, whatever values are written into it (via -writeValue:) will be propagated |
| * immediately, unless flow control prevents it. |
| * If it is throttled and keeps receiving values, as well as if it receives values before being |
| * started, it will buffer them and propagate them in order as soon as its state becomes Started. |
| * If it receives an error (via -writesFinishedWithError:), it will drop any buffered values and |
| * propagate the error immediately. |
| * |
| * Beware that a pipe of this type can't prevent receiving more values when it is paused (for |
| * example if used to write data to a congested network connection). Because in such situations the |
| * pipe will keep buffering all data written to it, your application could run out of memory and |
| * crash. If you want to react to flow control signals to prevent that, instead of using this class |
| * you can implement an object that conforms to GRXWriter. |
| * |
| * Thread-safety: |
| * The methods of an object of this class should not be called concurrently from different threads. |
| */ |
| @interface GRXBufferedPipe : GRXWriter<GRXWriteable> |
| |
| /** Convenience constructor. */ |
| + (instancetype)pipe; |
| |
| @end |