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Annotation of fam/fam/ServerConnection.h, Revision 1.1

1.1     ! trev        1: //  Copyright (C) 1999 Silicon Graphics, Inc.  All Rights Reserved.
        !             2: //
        !             3: //  This program is free software; you can redistribute it and/or modify it
        !             4: //  under the terms of version 2 of the GNU General Public License as
        !             5: //  published by the Free Software Foundation.
        !             6: //
        !             7: //  This program is distributed in the hope that it would be useful, but
        !             8: //  WITHOUT ANY WARRANTY; without even the implied warranty of
        !             9: //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  Further, any
        !            10: //  license provided herein, whether implied or otherwise, is limited to
        !            11: //  this program in accordance with the express provisions of the GNU
        !            12: //  General Public License.  Patent licenses, if any, provided herein do not
        !            13: //  apply to combinations of this program with other product or programs, or
        !            14: //  any other product whatsoever.  This program is distributed without any
        !            15: //  warranty that the program is delivered free of the rightful claim of any
        !            16: //  third person by way of infringement or the like.  See the GNU General
        !            17: //  Public License for more details.
        !            18: //
        !            19: //  You should have received a copy of the GNU General Public License along
        !            20: //  with this program; if not, write the Free Software Foundation, Inc., 59
        !            21: //  Temple Place - Suite 330, Boston MA 02111-1307, USA.
        !            22:
        !            23: #ifndef ServerConnection_included
        !            24: #define ServerConnection_included
        !            25:
        !            26: #include <string.h>
        !            27: #include <limits.h>
        !            28: #include <sys/param.h>
        !            29:
        !            30: #include "ClientInterest.h"
        !            31: #include "NetConnection.h"
        !            32: #include "Request.h"
        !            33:
        !            34: class Cred;
        !            35:
        !            36: //  A ServerConnection implements the client side of the fam protocol,
        !            37: //  and it also handles network I/O. The various requests, monitor,
        !            38: //  cancel, etc., can be sent.  When FAM events arrive, the
        !            39: //  EventHandler is called.
        !            40: //
        !            41: //  ServerConnection inherits from NetConnection.  This means that
        !            42: //  users of ServerConnection can test for I/O ready
        !            43: //  (ready_for_input(), ready_for_output()) and that they need to
        !            44: //  specify a DisconnectHandler which will be called when the server
        !            45: //  goes away.
        !            46:
        !            47: class ServerConnection : public NetConnection {
        !            48:
        !            49: public:
        !            50:
        !            51:     typedef void (*EventHandler)(const Event*, Request, const char *path,
        !            52: 				 void *closure);
        !            53:     typedef void (*DisconnectHandler)(void *closure);
        !            54:
        !            55:     ServerConnection(int fd, EventHandler, DisconnectHandler, void *closure);
        !            56:
        !            57:     void send_monitor(ClientInterest::Type, Request,
        !            58: 		      const char *path, const Cred&);
        !            59:     void send_cancel(Request r)		{ mprintf("C%d 0 0\n", r); }
        !            60:     void send_suspend(Request r)	{ mprintf("S%d 0 0\n", r); }
        !            61:     void send_resume(Request r)		{ mprintf("U%d 0 0\n", r); }
        !            62:     void send_name(const char *n)	{ mprintf("N0 0 0 %s\n", n); }
        !            63:
        !            64: protected:
        !            65:
        !            66:     bool input_msg(const char *msg, unsigned nbytes);
        !            67:
        !            68: private:
        !            69:
        !            70:     EventHandler event_handler;
        !            71:     DisconnectHandler disconnect_handler;
        !            72:     void *closure;
        !            73: };
        !            74:
        !            75: #endif /* !ServerConnection_included */