Class: NSPipe
Overview
NSPipe objects provide an object-oriented interface for accessing pipes. An NSPipe object represents both ends of a pipe and enables communication through the pipe. A pipe is a one-way communications channel between related processes; one process writes data, while the other process reads that data. The data that passes through the pipe is buffered; the size of the buffer is determined by the underlying operating system. NSPipe is an abstract class, the public interface of a class cluster.
Class Method Summary (collapse)
Instance Method Summary (collapse)
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- fileHandleForReading
Returns the receiver’s read file handle.
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- fileHandleForWriting
Returns the receiver's write file handle.
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- init
Returns an initialized NSPipe object.
Methods inherited from NSObject
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Constructor Details
This class inherits a constructor from NSObject
Dynamic Method Handling
This class handles dynamic methods through the method_missing method in the class NSObject
Instance Method Details
- (NSFileHandle) fileHandleForReading
Returns the receiver’s read file handle. You use the returned file handle to read from the pipe using NSFileHandle’s read methods—availableData, readDataToEndOfFile, and readDataOfLength:. You don’t need to send closeFile to this object or explicitly release the object after you have finished using it.
- (NSFileHandle) fileHandleForWriting
Returns the receiver's write file handle. You use the returned file handle to write to the pipe using NSFileHandle's writeData: method. When you are finished writing data to this object, send it a closeFile message to delete the descriptor. Deleting the descriptor causes the reading process to receive an end-of-data signal (an empty NSData object).