/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ /*** 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 <stdlib.h> #include <sys/mman.h> #include <unistd.h> #include <fcntl.h> #include "log.h" #include "macro.h" #include "util.h" #include "mmap-cache.h" int main(int argc, char *argv[]) { int x, y, z, r; char px[] = "/tmp/testmmapXXXXXXX", py[] = "/tmp/testmmapYXXXXXX", pz[] = "/tmp/testmmapZXXXXXX"; MMapCache *m; void *p, *q; assert_se(m = mmap_cache_new()); x = mkostemp_safe(px, O_RDWR|O_CLOEXEC); assert(x >= 0); unlink(px); y = mkostemp_safe(py, O_RDWR|O_CLOEXEC); assert(y >= 0); unlink(py); z = mkostemp_safe(pz, O_RDWR|O_CLOEXEC); assert(z >= 0); unlink(pz); r = mmap_cache_get(m, x, PROT_READ, 0, false, 1, 2, NULL, &p); assert(r >= 0); r = mmap_cache_get(m, x, PROT_READ, 0, false, 2, 2, NULL, &q); assert(r >= 0); assert((uint8_t*) p + 1 == (uint8_t*) q); r = mmap_cache_get(m, x, PROT_READ, 1, false, 3, 2, NULL, &q); assert(r >= 0); assert((uint8_t*) p + 2 == (uint8_t*) q); r = mmap_cache_get(m, x, PROT_READ, 0, false, 16ULL*1024ULL*1024ULL, 2, NULL, &p); assert(r >= 0); r = mmap_cache_get(m, x, PROT_READ, 1, false, 16ULL*1024ULL*1024ULL+1, 2, NULL, &q); assert(r >= 0); assert((uint8_t*) p + 1 == (uint8_t*) q); mmap_cache_unref(m); safe_close(x); safe_close(y); safe_close(z); return 0; }