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Annotation of fam/fam/Directory.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 Directory_included
                     24: #define Directory_included
                     25:
                     26: #include "ClientInterest.h"
                     27:
                     28: class DirEntry;
                     29: class DirectoryScanner;
                     30:
                     31: //  A Directory represents a directory that we are monitoring.
                     32: //  It's derived from ClientInterest.  See the comments in
                     33: //  ClientInterest and Interest.
                     34: //
                     35: //  Each Directory has a linked list of DirEntries.  The DirEntries
                     36: //  are stored in the order they're returned by readdir(2).
                     37:
                     38: class Directory : public ClientInterest {
                     39:
                     40: public:
                     41:
                     42:     Directory(const char *name, Client *, Request, const Cred&);
                     43:     ~Directory();
                     44:
                     45:     virtual void resume();
                     46:
                     47:     Type type() const;
                     48:     Interest *find_name(const char *);
                     49:     virtual bool do_scan();
                     50:     static bool chdir_root();
                     51:
                     52:     bool chdir();
                     53:
                     54: #if HAVE_SGI_NOHANG
                     55:     void unhang();
                     56: #endif
                     57:
                     58: private:
                     59:
                     60:     enum { SCANNING = 1 << 0, RESCAN_SCHEDULED = 1 << 1 };
                     61:
                     62:     //  Instance Variable
                     63:
                     64:     DirEntry *entries;
                     65:
                     66:     pid_t unhangPid;
                     67:
                     68:     //  Class Variable
                     69:
                     70:     static Directory *current_dir;
                     71:
                     72:     //  Class Methods
                     73:
                     74:     static void new_done_handler(void *);
                     75:     static void scan_done_handler(void *);
                     76:     static void scan_task(void *);
                     77:
                     78: friend class DirEntry;
                     79: friend class DirectoryScanner;
                     80:
                     81: };
                     82:
                     83: #endif /* !Directory_included */