X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2FServer.h;h=40021daa414c14bf82f15b36bc2ab1c60f48e3e5;hb=c8230ab0d0a919530c43c29395f4d9961498bf15;hp=31e7c4b7c4307c37cd13ca71c361fed164196970;hpb=fc978618030ebfaa4b624764330a0d7be4bd23e8;p=lyx.git

diff --git a/src/Server.h b/src/Server.h
index 31e7c4b7c4..40021daa41 100644
--- a/src/Server.h
+++ b/src/Server.h
@@ -14,7 +14,9 @@
 #ifndef SERVER_H
 #define SERVER_H
 
-#include <boost/signals/trackable.hpp>
+#include "support/signals.h"
+
+#include <vector>
 
 #ifdef _WIN32
 #include <windows.h>
@@ -25,11 +27,10 @@
 
 namespace lyx {
 
-class LyXFunc;
 class Server;
 
 
-/** This class managed the pipes used for communicating with clients.
+/** This class manages the pipes used for communicating with clients.
  Usage: Initialize with pipe-filename-base, client class to receive
  messages, and callback-function that will be called with the messages.
  When you want to send, use "send()".
@@ -37,10 +38,44 @@ class Server;
  a clean string interface.
  */
 #ifndef _WIN32
-class LyXComm : public boost::signals::trackable {
+class LyXComm {
 #else
 class LyXComm : public QObject {
 	Q_OBJECT
+
+	friend DWORD WINAPI pipeServerWrapper(void *);
+
+public:
+	/// Max number of clients
+	enum { MAX_CLIENTS = 10 };
+
+private:
+	/// Max number of pipe instances
+	enum { MAX_PIPES = 2 * MAX_CLIENTS };
+
+	/// I/O buffer size
+	enum { PIPE_BUFSIZE = 512 };
+
+	/// Pipe client time-out
+	enum { PIPE_TIMEOUT = 5000 };
+
+	/// Pipe states
+	enum PipeState {
+		CONNECTING_STATE,
+		READING_STATE,
+		WRITING_STATE
+	};
+
+	/// Pipe instances
+	typedef struct {
+		OVERLAPPED overlap;
+		HANDLE handle;
+		std::string iobuf;
+		char readbuf[PIPE_BUFSIZE];
+		DWORD nbytes;
+		PipeState state;
+		bool pending_io;
+	} PipeInst;
 #endif
 public:
 	/** When we receive a message, we send it to a client.
@@ -65,12 +100,12 @@ public:
 #ifndef _WIN32
 	void read_ready();
 #else
-	void read_ready(HANDLE);
-
-	/// The pipe server
-	void pipeServer();
+	void read_ready(DWORD);
 #endif
 
+	/// Tell whether we asked another instance of LyX to open the files
+	bool deferredLoading() { return deferred_loading_; }
+
 private:
 	/// the filename of the in pipe
 	std::string const inPipeName() const;
@@ -84,6 +119,9 @@ private:
 	/// Close pipes
 	void closeConnection();
 
+	/// Load files in another running instance of LyX
+	bool loadFilesInOtherInstance();
+
 #ifndef _WIN32
 	/// start a pipe
 	int startPipe(std::string const &, bool);
@@ -97,7 +135,44 @@ private:
 	/// This is -1 if not open
 	int outfd_;
 #else
-	HANDLE outpipe_;
+	/// The pipe server returns false when exiting due to an error
+	bool pipeServer();
+
+	/// Start an overlapped connection
+	bool startPipe(DWORD);
+
+	/// Reset an overlapped connection
+	bool resetPipe(DWORD, bool close_handle = false);
+
+	/// Close event and pipe handles
+	void closeHandles();
+
+	/// Catch pipe ready-to-be-read notification
+	bool event(QEvent *);
+
+	/// Check whether the pipe server must be stopped
+	bool checkStopServer(DWORD timeout = 0);
+
+	/// The filename of a (in or out) pipe instance
+	std::string const pipeName(DWORD) const;
+
+	/// Pipe instances
+	PipeInst pipe_[MAX_PIPES];
+
+	/// Pipe server control events
+	HANDLE event_[MAX_PIPES + 1];
+
+	/// Reply buffer
+	std::string outbuf_;
+
+	/// Synchronize access to outbuf_
+	HANDLE outbuf_mutex_;
+
+	/// Windows event for stopping the pipe server
+	HANDLE stopserver_;
+
+	/// Pipe server thread handle
+	HANDLE server_thread_;
 #endif
 
 	/// Are we up and running?
@@ -112,16 +187,11 @@ private:
 	/// The client callback function
 	ClientCallbackfct clientcb_;
 
-#ifdef _WIN32
-	/// Catch pipe ready-to-be-read notification
-	bool event(QEvent *);
-
-	/// Check whether the pipe server must be stopped
-	BOOL checkStopServerEvent();
+	/// Did we defer loading of files to another instance?
+	bool deferred_loading_;
 
-	/// Windows event for stopping the pipe server
-	HANDLE stopserver_;
-#endif
+	/// Track object's liveness
+	support::Trackable tracker_;
 };
 
 
@@ -131,19 +201,18 @@ public:
 	// FIXME IN 0.13
 	// Hack! This should be changed in 0.13
 
-	// The lyx server should not take an argument "LyXFunc" but this is
-	// how it will be done for 0.12. In 0.13 we must write a non-gui
-	// bufferview.
 	// IMO lyxserver is atypical, and for the moment the only one, non-gui
 	// bufferview. We just have to find a way to handle situations like if
 	// lyxserver is using a buffer that is being edited with a bufferview.
 	// With a common buffer list this is not a problem, maybe. (Alejandro)
 	///
-	Server(LyXFunc * f, std::string const & pip);
+	Server(std::string const & pip);
 	///
 	~Server();
 	///
 	void notifyClient(std::string const &);
+	///
+	bool deferredLoadingToOtherInstance() { return pipes_.deferredLoading(); }
 
 	/// whilst crashing etc.
 	void emergencyCleanup() { pipes_.emergencyCleanup(); }
@@ -152,19 +221,24 @@ public:
 
 private:
 	/// Names and number of current clients
+#ifndef _WIN32
 	enum { MAX_CLIENTS = 10 };
+#else
+	enum { MAX_CLIENTS = LyXComm::MAX_CLIENTS };
+#endif
 	///
 	std::string clients_[MAX_CLIENTS];
 	///
 	int numclients_;
 	///
-	LyXFunc * func_;
-	///
 	LyXComm pipes_;
 };
 
 /// Implementation is in LyX.cpp
-extern Server & theServer();
+Server & theServer();
+
+/// Implementation is in LyX.cpp
+extern std::vector<std::string> & theFilesToLoad();
 
 
 } // namespace lyx