1 /* 2 * A simple pager exposing a single memory region. 3 * 4 * Copyright (C) 2021, 2022, 2023 Paul Boddie <paul@boddie.org.uk> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of 9 * the License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA 20 */ 21 22 #pragma once 23 24 #include <fsserver/dataspace_interface.h> 25 #include <mem/flexpage.h> 26 #include <mem/memory.h> 27 #include <resource/resource.h> 28 29 30 31 /* A simple pager exposing a single memory region as a dataspace. */ 32 33 class SimplePager : public Dataspace, public Resource 34 { 35 protected: 36 Memory *_memory; 37 Region *_region; 38 39 public: 40 explicit SimplePager(Memory *memory=NULL); 41 42 void close(); 43 44 /* Data access methods. */ 45 46 char *get_string(offset_t offset=0); 47 48 /* Paging methods. */ 49 50 long map(offset_t offset, map_address_t hot_spot, map_flags_t flags, l4_snd_fpage_t *region); 51 52 long info(offset_t *size, map_flags_t *flags); 53 }; 54 55 // vim: tabstop=4 expandtab shiftwidth=4