diff options
Diffstat (limited to 'tests/fs-tests/stress/atoms/rndrm00.c')
| -rw-r--r-- | tests/fs-tests/stress/atoms/rndrm00.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/tests/fs-tests/stress/atoms/rndrm00.c b/tests/fs-tests/stress/atoms/rndrm00.c new file mode 100644 index 0000000..724b1c3 --- /dev/null +++ b/tests/fs-tests/stress/atoms/rndrm00.c @@ -0,0 +1,157 @@ +/* + * Copyright (C) 2007 Nokia Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program 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 + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + * Author: Adrian Hunter + */ + +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <stdint.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <errno.h> + +#include "tests.h" + +void rndrm00(void) +{ + int64_t repeat; + int64_t size, this_size; + pid_t pid; + char dir_name[256]; + + /* Create a directory to test in */ + pid = getpid(); + tests_cat_pid(dir_name, "rndrm00_test_dir_", pid); + if (chdir(dir_name) == -1) + CHECK(mkdir(dir_name, 0777) != -1); + CHECK(chdir(dir_name) != -1); + /* Repeat loop */ + repeat = tests_repeat_parameter; + size = 0; + for (;;) { + /* Create and remove sub-dirs and small files, */ + /* but tending to grow */ + do { + if (tests_random_no(3)) { + this_size = tests_create_entry(NULL); + if (!this_size) + break; + size += this_size; + } else { + this_size = tests_remove_entry(); + size -= this_size; + if (size < 0) + size = 0; + if (!this_size) + this_size = 1; + } + } while (this_size && + (tests_size_parameter == 0 || + size < tests_size_parameter)); + /* Create and remove sub-dirs and small files, but */ + /* but tending to shrink */ + do { + if (!tests_random_no(3)) { + this_size = tests_create_entry(NULL); + size += this_size; + } else { + this_size = tests_remove_entry(); + size -= this_size; + if (size < 0) + size = 0; + } + } while ((tests_size_parameter != 0 && + size > tests_size_parameter / 10) || + (tests_size_parameter == 0 && size > 100000)); + /* Break if repeat count exceeded */ + if (tests_repeat_parameter > 0 && --repeat <= 0) + break; + /* Sleep */ + if (tests_sleep_parameter > 0) { + unsigned us = tests_sleep_parameter * 1000; + unsigned rand_divisor = RAND_MAX / us; + unsigned s = (us / 2) + (rand() / rand_divisor); + usleep(s); + } + } + /* Tidy up by removing everything */ + tests_clear_dir("."); + CHECK(chdir("..") != -1); + CHECK(rmdir(dir_name) != -1); +} + +/* Title of this test */ + +const char *rndrm00_get_title(void) +{ + return "Randomly create and remove directories and files"; +} + +/* Description of this test */ + +const char *rndrm00_get_description(void) +{ + return + "Create a directory named rndrm00_test_dir_pid, where " \ + "pid is the process id. Within that directory, " \ + "randomly create and remove " \ + "a number of sub-directories and small files, " \ + "but do more creates than removes. " \ + "When the total size of all sub-directories and files " \ + "is greater than the size specified by the size parameter, " \ + "start to do more removes than creates. " \ + "The size parameter is given by the -z or --size option, " \ + "otherwise it defaults to 1000000. " \ + "A size of zero fills the file system until there is no " + "space left. " \ + "The task repeats, sleeping in between each iteration. " \ + "The repeat count is set by the -n or --repeat option, " \ + "otherwise it defaults to 1. " \ + "A repeat count of zero repeats forever. " \ + "The sleep value is given by the -p or --sleep option, " \ + "otherwise it defaults to 0. " + "Sleep is specified in milliseconds."; +} + +int main(int argc, char *argv[]) +{ + int run_test; + + /* Set default test size */ + tests_size_parameter = 1000000; + + /* Set default test repetition */ + tests_repeat_parameter = 1; + + /* Set default test sleep */ + tests_sleep_parameter = 0; + + /* Handle common arguments */ + run_test = tests_get_args(argc, argv, rndrm00_get_title(), + rndrm00_get_description(), "znp"); + if (!run_test) + return 1; + /* Change directory to the file system and check it is ok for testing */ + tests_check_test_file_system(); + /* Do the actual test */ + rndrm00(); + return 0; +} |