Mercurial > libjeffpc
view file_cache.c @ 794:d018af7c979c
slab: make struct mem_cache private
Signed-off-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
author | Josef 'Jeff' Sipek <jeffpc@josefsipek.net> |
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date | Sun, 15 Mar 2020 15:52:09 +0200 |
parents | 67a81f305a11 |
children |
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/* * Copyright (c) 2019 Josef 'Jeff' Sipek <jeffpc@josefsipek.net> * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include <jeffpc/file-cache.h> #include <jeffpc/io.h> /* * This is the fallback implementation. It doesn't actually do any caching, * it simply reads the file contents every time. */ #pragma weak file_cache_init int file_cache_init(void) { /* nothing to do */ return 0; } #pragma weak file_cache_get struct str *file_cache_get(const char *name, uint64_t *rev) { struct stat statbuf; char *tmp; if (rev) *rev = 0; tmp = read_file_common(AT_FDCWD, name, &statbuf); if (IS_ERR(tmp)) return ERR_CAST(tmp); return str_alloc(tmp); } #pragma weak file_cache_has_newer bool file_cache_has_newer(const char *name, uint64_t rev) { /* pretend that the file has changed to make the caller read it again */ return true; } #pragma weak file_cache_uncache_all void file_cache_uncache_all(void) { /* nothing to do */ }