/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ #pragma once /*** This file is part of systemd. Copyright 2012 Lennart Poettering systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ #include <inttypes.h> #include <stdbool.h> #include <sys/stat.h> /* One context per object type, plus one of the header, plus one "additional" one */ #define MMAP_CACHE_MAX_CONTEXTS 9 typedef struct MMapCache MMapCache; MMapCache* mmap_cache_new(void); MMapCache* mmap_cache_ref(MMapCache *m); MMapCache* mmap_cache_unref(MMapCache *m); int mmap_cache_get( MMapCache *m, int fd, int prot, unsigned context, bool keep_always, uint64_t offset, size_t size, struct stat *st, void **ret); void mmap_cache_close_fd(MMapCache *m, int fd); unsigned mmap_cache_get_hit(MMapCache *m); unsigned mmap_cache_get_missed(MMapCache *m); bool mmap_cache_got_sigbus(MMapCache *m, int fd);