From 726ac243f051f0daee6149db66ac21ba621fb454 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 15 Mar 2007 08:45:19 -0500 Subject: Add fs-tests from Adrian Hunter Signed-off-by: Adrian Hunter Signed-off-by: Josh Boyer --- tests/fs-tests/stress/atoms/pdfrun.c | 143 +++++++++++++++++++++++++++++++++++ 1 file changed, 143 insertions(+) create mode 100644 tests/fs-tests/stress/atoms/pdfrun.c (limited to 'tests/fs-tests/stress/atoms/pdfrun.c') diff --git a/tests/fs-tests/stress/atoms/pdfrun.c b/tests/fs-tests/stress/atoms/pdfrun.c new file mode 100644 index 0000000..3536580 --- /dev/null +++ b/tests/fs-tests/stress/atoms/pdfrun.c @@ -0,0 +1,143 @@ +/* + * 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 +#include +#include +#include +#include +#include +#include +#include +#include + +#include "tests.h" + +#define WRITE_BUFFER_SIZE 32768 + +void adjust_size(void) +{ + char dummy[1024]; + unsigned long total_memory; + FILE *f; + + total_memory = 0; + f = fopen("/proc/meminfo", "r"); + fscanf(f, "%s %lu", dummy, &total_memory); + fclose(f); + if (total_memory > 0 && tests_size_parameter > total_memory / 2) + tests_size_parameter = total_memory / 2; +} + +void run_pdf(void) +{ + int fd, i; + pid_t pid; + int64_t repeat; + ssize_t written; + int64_t remains; + size_t block; + char file_name[256]; + char buf[WRITE_BUFFER_SIZE]; + + if (tests_fs_is_currfs()) + return; + adjust_size(); + pid = getpid(); + tests_cat_pid(file_name, "run_pdf_test_file_", pid); + fd = open(file_name, O_CREAT | O_WRONLY, + S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH); + CHECK(fd != -1); + pid = getpid(); + srand(pid); + repeat = tests_repeat_parameter; + for (;;) { + for (i = 0; i < WRITE_BUFFER_SIZE;++i) + buf[i] = rand(); + remains = tests_size_parameter; + while (remains > 0) { + if (remains > WRITE_BUFFER_SIZE) + block = WRITE_BUFFER_SIZE; + else + block = remains; + written = write(fd, buf, block); + if (written <= 0) { + CHECK(errno == ENOSPC); /* File system full */ + errno = 0; + break; + } + remains -= written; + } + /* Break if repeat count exceeded */ + if (tests_repeat_parameter > 0 && --repeat <= 0) + break; + CHECK(lseek(fd, 0, SEEK_SET) == 0); + } + CHECK(close(fd) != -1); + CHECK(unlink(file_name) != -1); +} + +/* Title of this test */ + +const char *run_pdf_get_title(void) +{ + return "Create / overwrite a large file in the current directory"; +} + +/* Description of this test */ + +const char *run_pdf_get_description(void) +{ + return + "Create a file named run_pdf_test_file_pid, " \ + "where pid is the process id. The file is created " \ + "in the current directory, " \ + "if the current directory is NOT on the test " \ + "file system, otherwise no action is taken. " \ + "If a repeat count is specified, then the task repeats " \ + "that number of times. " \ + "The repeat count is given by the -n or --repeat option, " \ + "otherwise it defaults to 1. " \ + "A repeat count of zero repeats forever. " \ + "The size is given by the -z or --size option, " \ + "otherwise it defaults to 1000000. " \ + "The size is adjusted so that it is not more than " \ + "half the size of total memory."; +} + +int main(int argc, char *argv[]) +{ + int run_test; + + /* Set default test file size */ + tests_size_parameter = 1000000; + + /* Set default test repetition */ + tests_repeat_parameter = 1; + + /* Handle common arguments */ + run_test = tests_get_args(argc, argv, run_pdf_get_title(), + run_pdf_get_description(), "zn"); + if (!run_test) + return 1; + /* Do the actual test */ + run_pdf(); + return 0; +} -- cgit v1.2.3