1.1 --- a/dstest_test_client.cc Thu Apr 01 00:39:16 2021 +0200
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,242 +0,0 @@
1.4 -/*
1.5 - * Test dataspace operations.
1.6 - *
1.7 - * Copyright (C) 2020, 2021 Paul Boddie <paul@boddie.org.uk>
1.8 - *
1.9 - * This program is free software; you can redistribute it and/or
1.10 - * modify it under the terms of the GNU General Public License as
1.11 - * published by the Free Software Foundation; either version 2 of
1.12 - * the License, or (at your option) any later version.
1.13 - *
1.14 - * This program is distributed in the hope that it will be useful,
1.15 - * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.16 - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.17 - * GNU General Public License for more details.
1.18 - *
1.19 - * You should have received a copy of the GNU General Public License
1.20 - * along with this program; if not, write to the Free Software
1.21 - * Foundation, Inc., 51 Franklin Street, Fifth Floor,
1.22 - * Boston, MA 02110-1301, USA
1.23 - */
1.24 -
1.25 -#include <l4/re/env.h>
1.26 -#include <l4/sys/err.h>
1.27 -
1.28 -#include <stdio.h>
1.29 -#include <string.h>
1.30 -#include <stdlib.h>
1.31 -#include <time.h>
1.32 -
1.33 -#include <system_error>
1.34 -#include <thread>
1.35 -
1.36 -#include <ipc/thread.h>
1.37 -
1.38 -#include "file.h"
1.39 -#include "memory_utils.h"
1.40 -
1.41 -
1.42 -
1.43 -/* Test parameters affected by capability limits. */
1.44 -
1.45 -const unsigned long NUMBER_OF_FILES = 10;
1.46 -const unsigned int START_LIMIT = 10;
1.47 -const unsigned int ACTIVITY_ITERATIONS = 20;
1.48 -
1.49 -/* Test parameters unaffected by any capability limits. */
1.50 -
1.51 -const unsigned int MAP_PAGES = 20;
1.52 -const unsigned int REGION_ITERATIONS = 20;
1.53 -
1.54 -
1.55 -
1.56 -/* An activity opening and reading from a file. */
1.57 -
1.58 -static long activity(file_t *context, unsigned long fileid, unsigned int start_page)
1.59 -{
1.60 - unsigned long step = page(1);
1.61 - unsigned long sample = page(1);
1.62 -
1.63 - /* Allocate a buffer for sampling from the file. */
1.64 -
1.65 - char buf[sample + 1];
1.66 -
1.67 - /* Invoke the open method to receive the file reference. */
1.68 -
1.69 - file_t file;
1.70 -
1.71 - long err = file_context_open(&file, context);
1.72 -
1.73 - if (err)
1.74 - {
1.75 - printf("Could not obtain file for %ld @ page %d: %s\n", fileid, start_page, l4sys_errtostr(err));
1.76 - return err;
1.77 - }
1.78 -
1.79 - /* A region of the file is mapped. */
1.80 -
1.81 - err = file_mmap(&file, page(start_page), page(MAP_PAGES));
1.82 -
1.83 - if (err)
1.84 - {
1.85 - printf("Could not map file region for %ld @ page %d: %s\n", fileid, start_page, l4sys_errtostr(err));
1.86 - file_close(&file);
1.87 - return err;
1.88 - }
1.89 -
1.90 - /* Read the region a number of times. */
1.91 -
1.92 - for (unsigned int read_counter = 0; read_counter < REGION_ITERATIONS; read_counter++)
1.93 - {
1.94 - for (unsigned long offset = 0; offset < file_populated_span(&file); offset += step)
1.95 - {
1.96 - unsigned long remaining = file_populated_span(&file) - offset;
1.97 - unsigned long sample_remaining = remaining < sample ? remaining : sample;
1.98 -
1.99 - strncpy(buf, (file.memory + offset), sample_remaining);
1.100 - buf[sample_remaining] = '\0';
1.101 -
1.102 - /* Test the data obtained. */
1.103 -
1.104 - unsigned long filepos = file.start_pos + offset;
1.105 - unsigned long _fileid = 0, _filepos = 0;
1.106 - char *sep = strchr(buf, ':');
1.107 -
1.108 - if (sep != NULL)
1.109 - {
1.110 - *sep = '\0'; sep++;
1.111 - _fileid = atol(buf); _filepos = atol(sep);
1.112 - }
1.113 -
1.114 - if ((fileid != _fileid) || (filepos != _filepos))
1.115 - printf("! %ld:%ld is not %ld:%ld\n", _fileid, _filepos, fileid, filepos);
1.116 - }
1.117 - }
1.118 -
1.119 - file_close(&file);
1.120 -
1.121 - return L4_EOK;
1.122 -}
1.123 -
1.124 -
1.125 -
1.126 -static long activity_iterate(file_t *context, unsigned long fileid, unsigned int start_page)
1.127 -{
1.128 - long err;
1.129 -
1.130 - /* Open the file, read pages, close the file, over and over. */
1.131 -
1.132 - for (unsigned int iteration = 0; iteration < ACTIVITY_ITERATIONS; iteration++)
1.133 - {
1.134 - err = activity(context, fileid, start_page);
1.135 - if (err)
1.136 - break;
1.137 - }
1.138 -
1.139 - return err;
1.140 -}
1.141 -
1.142 -
1.143 -
1.144 -static long context_for_file(unsigned long fileid, file_t *file, l4_cap_idx_t server)
1.145 -{
1.146 - long err = file_context(file, server);
1.147 -
1.148 - if (err)
1.149 - {
1.150 - printf("Could not obtain context: %s\n", l4sys_errtostr(err));
1.151 - file_close(file);
1.152 - return err;
1.153 - }
1.154 -
1.155 - /* Write the filename. */
1.156 -
1.157 - sprintf(file->memory, "%ld", fileid);
1.158 -
1.159 - return L4_EOK;
1.160 -}
1.161 -
1.162 -
1.163 -
1.164 -int main(void)
1.165 -{
1.166 - long err;
1.167 -
1.168 - /* Introduce concurrency control. */
1.169 -
1.170 - err = ipc_thread_init();
1.171 -
1.172 - if (err)
1.173 - {
1.174 - printf("Initialisation error: %s\n", l4sys_errtostr(err));
1.175 - return 1;
1.176 - }
1.177 -
1.178 - /* Retain activity and context details. */
1.179 -
1.180 - std::thread *activities[NUMBER_OF_FILES * START_LIMIT];
1.181 - file_t contexts[NUMBER_OF_FILES];
1.182 -
1.183 - /* Obtain access to the filesystem. */
1.184 -
1.185 - l4_cap_idx_t server = l4re_env_get_cap("server");
1.186 -
1.187 - /* Obtain opener contexts for the files. */
1.188 -
1.189 - unsigned long fileid;
1.190 -
1.191 - for (fileid = 0; fileid < NUMBER_OF_FILES; fileid++)
1.192 - {
1.193 - err = context_for_file(fileid, &contexts[fileid], server);
1.194 -
1.195 - if (err)
1.196 - {
1.197 - printf("Context allocation failed.\n");
1.198 - return 1;
1.199 - }
1.200 - }
1.201 -
1.202 - /* Start threads accessing all the files. */
1.203 -
1.204 - printf("Starting threads...\n");
1.205 -
1.206 - time_t t = time(NULL);
1.207 - int current = 0;
1.208 - unsigned long errors = 0;
1.209 -
1.210 - for (fileid = 0; fileid < NUMBER_OF_FILES; fileid++)
1.211 - {
1.212 - for (unsigned int start_page = 0; start_page < START_LIMIT; start_page++)
1.213 - {
1.214 - try
1.215 - {
1.216 - activities[current++] = new std::thread(activity_iterate, &contexts[fileid], fileid, start_page);
1.217 - }
1.218 - catch (const std::system_error &exc)
1.219 - {
1.220 - errors++;
1.221 - }
1.222 - }
1.223 - }
1.224 -
1.225 - /* Wait for the threads. */
1.226 -
1.227 - int limit = current;
1.228 -
1.229 - printf("Waiting for %d threads...\n", limit);
1.230 -
1.231 - for (current = 0; current < limit; current++)
1.232 - activities[current]->join();
1.233 -
1.234 - /* Discard the contexts. */
1.235 -
1.236 - for (fileid = 0; fileid < NUMBER_OF_FILES; fileid++)
1.237 - file_close(&contexts[fileid]);
1.238 -
1.239 - t = time(NULL) - t;
1.240 - printf("Activities completed in %ld seconds (with %ld threads not started).\n", t, errors);
1.241 -
1.242 - return 0;
1.243 -}
1.244 -
1.245 -// vim: tabstop=2 expandtab shiftwidth=2