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Annotation of fam/fam/ClientInterest.h, Revision 1.1.1.1

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 ClientInterest_included
                     24: #define ClientInterest_included
                     25:
                     26: #include "Boolean.h"
                     27: #include "Cred.h"
                     28: #include "Interest.h"
                     29: #include "Request.h"
                     30:
                     31: class Client;
                     32:
                     33: //  ClientInterest -- an abstract base class for a filesystem entity
                     34: //  in which a client has expressed an interest.  The two kinds of
                     35: //  ClientInterest are File and Directory.
                     36: //
                     37: //  The ClientInterest is intimately tied to the Interest, Directory
                     38: //  and DirEntry.  And the whole hierarchy is very messy.
                     39:
                     40: class ClientInterest : public Interest {
                     41:
                     42: public:
                     43:
                     44:     enum Type { FILE = 'W', DIRECTORY = 'M' };
                     45:
                     46:     virtual ~ClientInterest();
                     47:
                     48:     virtual void suspend();
                     49:     virtual void resume();
                     50:     virtual bool active() const;
                     51:
                     52:     void findfilesystem();
                     53:     bool scan(Interest * = NULL);
                     54:     void unscan(Interest * = NULL);
                     55:     virtual Interest *find_name(const char *);
                     56:     virtual bool do_scan();
                     57:
                     58:     void become_user() const		{ mycred.become_user(); }
                     59:     const Cred& cred() const		{ return mycred; }
                     60:     FileSystem *filesystem() const	{ return myfilesystem; }
                     61:     Client *client() const		{ return myclient; }
                     62:     virtual Type type() const = 0;
                     63:
                     64:     virtual void notify_created(Interest *);
                     65:     virtual void notify_deleted(Interest *);
                     66:
                     67:     virtual void cancel();
                     68:
                     69: protected:
                     70:
                     71:     ClientInterest(const char *name, Client *, Request, const Cred&, Type);
                     72:     void post_event(const Event&, const char * = NULL);
                     73:
                     74: private:
                     75:
                     76:     enum { ACTIVE_STATE = 1 << 0 };
                     77:
                     78:     //  Instance Variables
                     79:
                     80:     Client *myclient;
                     81:     Request request;
                     82:     const Cred mycred;
                     83:     FileSystem *myfilesystem;
                     84:     Request fs_request;
                     85:
                     86:     void filesystem(FileSystem *);
                     87:
                     88: };
                     89:
                     90: #endif /* !ClientInterest_included */