#ifndef SERVER_H
#define SERVER_H
-#include <boost/signals/trackable.hpp>
+#include "support/signals.h"
+
+#include <vector>
#ifdef _WIN32
#include <windows.h>
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()".
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.
#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;
/// 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);
/// 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?
/// 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_;
};
// 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(); }
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