mirror of
https://github.com/openvswitch/ovs
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361906b1e2
The ESX userspace looks quite a bit like linux, but has some key differences which need to be specially handled in the build. To distinguish between ESX and systems which use the linux datapath module, this patch adds two new macros "ESX" and "LINUX_DATAPATH". It uses these macros to disable building code on ESX which only applies to a true Linux environment. In addition, it adds a new route-table-stub implementation which is required for the build to complete successfully on ESX. Signed-off-by: Ethan Jackson <ethan@nicira.com>
146 lines
4.1 KiB
C
146 lines
4.1 KiB
C
/*
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* Copyright (c) 2009, 2010, 2011 Nicira, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <config.h>
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#include "timeval.h"
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "command-line.h"
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#include "daemon.h"
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#include "util.h"
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#undef NDEBUG
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#include <assert.h>
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static long long int
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gettimeofday_in_msec(void)
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{
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struct timeval tv;
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xgettimeofday(&tv);
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return timeval_to_msec(&tv);
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}
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static void
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do_test(void)
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{
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/* Wait until we are awakened by a signal (typically EINTR due to the
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* setitimer()). Then ensure that, if time has really advanced by
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* TIME_UPDATE_INTERVAL, then time_msec() reports that it advanced.
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*/
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long long int start_time_msec, start_time_wall;
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long long int start_gtod;
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start_time_msec = time_msec();
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start_time_wall = time_wall_msec();
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start_gtod = gettimeofday_in_msec();
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for (;;) {
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/* Wait up to 1 second. Using select() to do the timeout avoids
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* interfering with the interval timer. */
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struct timeval timeout;
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int retval;
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timeout.tv_sec = 1;
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timeout.tv_usec = 0;
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retval = select(0, NULL, NULL, NULL, &timeout);
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if (retval != -1) {
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ovs_fatal(0, "select returned %d", retval);
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} else if (errno != EINTR) {
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ovs_fatal(errno, "select reported unexpected error");
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}
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if (gettimeofday_in_msec() - start_gtod >= TIME_UPDATE_INTERVAL) {
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/* gettimeofday() and time_msec() have different granularities in
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* their time sources. Depending on the rounding used this could
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* result in a slight difference, so we allow for 1 ms of slop. */
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assert(time_msec() - start_time_msec >= TIME_UPDATE_INTERVAL - 1);
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assert(time_wall_msec() - start_time_wall >=
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TIME_UPDATE_INTERVAL - 1);
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break;
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}
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}
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}
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static void
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usage(void)
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{
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ovs_fatal(0, "usage: %s TEST, where TEST is \"plain\" or \"daemon\"",
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program_name);
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}
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int
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main(int argc, char *argv[])
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{
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proctitle_init(argc, argv);
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set_program_name(argv[0]);
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if (argc != 2) {
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usage();
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} else if (!strcmp(argv[1], "plain")) {
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/* If we're not caching time there isn't much to test and SIGALRM won't
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* be around to pull us out of the select() call, so just skip out */
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if (!CACHE_TIME) {
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exit (77);
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}
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do_test();
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} else if (!strcmp(argv[1], "daemon")) {
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/* Test that time still advances even in a daemon. This is an
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* interesting test because fork() cancels the interval timer. */
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char cwd[1024], *pidfile;
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FILE *success;
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if (!CACHE_TIME) {
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exit (77);
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}
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assert(getcwd(cwd, sizeof cwd) == cwd);
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unlink("test-timeval.success");
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/* Daemonize, with a pidfile in the current directory. */
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set_detach();
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pidfile = xasprintf("%s/test-timeval.pid", cwd);
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set_pidfile(pidfile);
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free(pidfile);
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set_no_chdir();
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daemonize();
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/* Run the test. */
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do_test();
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/* Report success by writing out a file, since the ultimate invoker of
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* test-timeval can't wait on the daemonized process. */
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success = fopen("test-timeval.success", "w");
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if (!success) {
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ovs_fatal(errno, "test-timeval.success: create failed");
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}
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fprintf(success, "success\n");
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fclose(success);
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} else {
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usage();
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}
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return 0;
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}
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