1 // 2 // Copyright 2005 The Android Open Source Project 3 // 4 // Create or attach to a named bi-directional channel on the local machine. 5 // 6 #ifndef __LIBS_LOCALBICHANNEL_H 7 #define __LIBS_LOCALBICHANNEL_H 8 9 #ifdef HAVE_ANDROID_OS 10 #error DO NOT USE THIS FILE IN THE DEVICE BUILD 11 #endif 12 13 #include "Pipe.h" 14 15 namespace android { 16 17 /* 18 * This is essentially a wrapper class for UNIX-domain sockets. The 19 * idea is to set one up with create() or attach to one with attach() 20 * and then extract the unidirectional read/write Pipes. These can 21 * be used directly or stuffed into a MessageStream. 22 * 23 * The name for the pipe should be a short filename made up of alphanumeric 24 * characters. Depending on the implementation, we may create a file in 25 * /tmp with the specified name, removing any existing copy. 26 */ 27 class LocalBiChannel { 28 public: 29 LocalBiChannel(void); 30 ~LocalBiChannel(void); 31 32 /* create the "listen" side */ 33 bool create(const char* name); 34 35 /* 36 * Listen for a connection. When we get one, we create unidirectional 37 * read/write pipes and return them. 38 */ 39 bool listen(Pipe** ppReadPipe, Pipe** ppWritePipe); 40 41 /* 42 * Attach to a channel created by somebody else. Returns pipes. 43 */ 44 bool attach(const char* name, Pipe** ppReadPipe, Pipe** ppWritePipe); 45 46 private: 47 char* mFileName; 48 bool mIsListener; 49 unsigned long mHandle; 50 }; 51 52 }; // namespace android 53 54 #endif // __LIBS_LOCALBICHANNEL_H 55
