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tests: Add tests for timers
Signed-off-by: Christian Franke <chris@opensourcerouting.org> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
This commit is contained in:
parent
6f2a67031c
commit
ba32db1e85
2
tests/.gitignore
vendored
2
tests/.gitignore
vendored
@ -22,6 +22,8 @@ heavy
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heavythread
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heavywq
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tabletest
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test-timer-correctness
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test-timer-performance
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testbgpcap
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testbgpmpath
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testbgpmpattr
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@ -28,7 +28,7 @@ endif
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check_PROGRAMS = testsig testsegv testbuffer testmemory heavy heavywq heavythread \
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testprivs teststream testchecksum tabletest testnexthopiter \
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testcommands \
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testcommands test-timer-correctness test-timer-performance \
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$(TESTS_BGPD)
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../vtysh/vtysh_cmd.c:
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@ -63,6 +63,8 @@ testbgpmpath_SOURCES = bgp_mpath_test.c
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tabletest_SOURCES = table_test.c
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testnexthopiter_SOURCES = test-nexthop-iter.c prng.c
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testcommands_SOURCES = test-commands-defun.c test-commands.c prng.c
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test_timer_correctness_SOURCES = test-timer-correctness.c prng.c
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test_timer_performance_SOURCES = test-timer-performance.c prng.c
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testsig_LDADD = ../lib/libzebra.la @LIBCAP@
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testsegv_LDADD = ../lib/libzebra.la @LIBCAP@
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@ -82,3 +84,5 @@ testbgpmpath_LDADD = ../bgpd/libbgp.a ../lib/libzebra.la @LIBCAP@ -lm
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tabletest_LDADD = ../lib/libzebra.la @LIBCAP@ -lm
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testnexthopiter_LDADD = ../lib/libzebra.la @LIBCAP@
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testcommands_LDADD = ../lib/libzebra.la @LIBCAP@
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test_timer_correctness_LDADD = ../lib/libzebra.la @LIBCAP@
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test_timer_performance_LDADD = ../lib/libzebra.la @LIBCAP@
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@ -1,4 +1,5 @@
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EXTRA_DIST = \
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tabletest.exp \
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test-timer-correctness.exp \
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testcommands.exp \
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testnexthopiter.exp
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7
tests/libzebra.tests/test-timer-correctness.exp
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7
tests/libzebra.tests/test-timer-correctness.exp
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@ -0,0 +1,7 @@
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set timeout 10
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set testprefix "test-timer-correctness"
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set aborted 0
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spawn "./test-timer-correctness"
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onesimple "" "Expected output and actual output match."
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194
tests/test-timer-correctness.c
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194
tests/test-timer-correctness.c
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@ -0,0 +1,194 @@
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/*
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* Test program to verify that scheduled timers are executed in the
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* correct order.
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*
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* Copyright (C) 2013 by Open Source Routing.
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* Copyright (C) 2013 by Internet Systems Consortium, Inc. ("ISC")
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*
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* This file is part of Quagga
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*
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* Quagga is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* Quagga is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Quagga; see the file COPYING. If not, write to the Free
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* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <zebra.h>
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#include "memory.h"
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#include "pqueue.h"
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#include "prng.h"
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#include "thread.h"
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#define SCHEDULE_TIMERS 800
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#define REMOVE_TIMERS 200
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#define TIMESTR_LEN strlen("4294967296.999999")
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struct thread_master *master;
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static size_t log_buf_len;
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static size_t log_buf_pos;
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static char *log_buf;
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static size_t expected_buf_len;
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static size_t expected_buf_pos;
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static char *expected_buf;
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static struct prng *prng;
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static struct thread **timers;
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static int timers_pending;
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static void terminate_test(void)
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{
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int exit_code;
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if (strcmp(log_buf, expected_buf))
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{
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fprintf(stderr, "Expected output and received output differ.\n");
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fprintf(stderr, "---Expected output: ---\n%s", expected_buf);
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fprintf(stderr, "---Actual output: ---\n%s", log_buf);
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exit_code = 1;
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}
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else
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{
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printf("Expected output and actual output match.\n");
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exit_code = 0;
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}
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thread_master_free(master);
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XFREE(MTYPE_TMP, log_buf);
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XFREE(MTYPE_TMP, expected_buf);
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prng_free(prng);
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XFREE(MTYPE_TMP, timers);
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exit(exit_code);
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}
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static int timer_func(struct thread *thread)
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{
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int rv;
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rv = snprintf(log_buf + log_buf_pos, log_buf_len - log_buf_pos,
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"%s\n", (char*)thread->arg);
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assert(rv >= 0);
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log_buf_pos += rv;
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assert(log_buf_pos < log_buf_len);
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XFREE(MTYPE_TMP, thread->arg);
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timers_pending--;
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if (!timers_pending)
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terminate_test();
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return 0;
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}
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static int cmp_timeval(const void* a, const void *b)
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{
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const struct timeval *ta = *(struct timeval * const *)a;
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const struct timeval *tb = *(struct timeval * const *)b;
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if (timercmp(ta, tb, <))
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return -1;
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if (timercmp(ta, tb, >))
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return 1;
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return 0;
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}
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int main(int argc, char **argv)
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{
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int i, j;
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struct thread t;
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struct timeval **alarms;
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master = thread_master_create();
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log_buf_len = SCHEDULE_TIMERS * (TIMESTR_LEN + 1) + 1;
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log_buf_pos = 0;
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log_buf = XMALLOC(MTYPE_TMP, log_buf_len);
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expected_buf_len = SCHEDULE_TIMERS * (TIMESTR_LEN + 1) + 1;
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expected_buf_pos = 0;
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expected_buf = XMALLOC(MTYPE_TMP, expected_buf_len);
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prng = prng_new(0);
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timers = XMALLOC(MTYPE_TMP, SCHEDULE_TIMERS * sizeof(*timers));
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for (i = 0; i < SCHEDULE_TIMERS; i++)
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{
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long interval_msec;
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int ret;
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char *arg;
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/* Schedule timers to expire in 0..5 seconds */
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interval_msec = prng_rand(prng) % 5000;
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arg = XMALLOC(MTYPE_TMP, TIMESTR_LEN + 1);
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timers[i] = thread_add_timer_msec(master, timer_func, arg, interval_msec);
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ret = snprintf(arg, TIMESTR_LEN + 1, "%ld.%06ld",
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timers[i]->u.sands.tv_sec, timers[i]->u.sands.tv_usec);
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assert(ret > 0);
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assert((size_t)ret < TIMESTR_LEN + 1);
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timers_pending++;
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}
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for (i = 0; i < REMOVE_TIMERS; i++)
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{
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int index;
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index = prng_rand(prng) % SCHEDULE_TIMERS;
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if (!timers[index])
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continue;
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XFREE(MTYPE_TMP, timers[index]->arg);
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thread_cancel(timers[index]);
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timers[index] = NULL;
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timers_pending--;
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}
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/* We create an array of pointers to the alarm times and sort
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* that array. That sorted array is used to generate a string
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* representing the expected "output" of the timers when they
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* are run. */
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j = 0;
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alarms = XMALLOC(MTYPE_TMP, timers_pending * sizeof(*alarms));
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for (i = 0; i < SCHEDULE_TIMERS; i++)
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{
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if (!timers[i])
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continue;
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alarms[j++] = &timers[i]->u.sands;
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}
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qsort(alarms, j, sizeof(*alarms), cmp_timeval);
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for (i = 0; i < j; i++)
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{
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int ret;
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ret = snprintf(expected_buf + expected_buf_pos,
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expected_buf_len - expected_buf_pos,
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"%ld.%06ld\n", alarms[i]->tv_sec, alarms[i]->tv_usec);
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assert(ret > 0);
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expected_buf_pos += ret;
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assert(expected_buf_pos < expected_buf_len);
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}
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XFREE(MTYPE_TMP, alarms);
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while (thread_fetch(master, &t))
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thread_call(&t);
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return 0;
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}
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104
tests/test-timer-performance.c
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104
tests/test-timer-performance.c
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@ -0,0 +1,104 @@
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/*
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* Test program which measures the time it takes to schedule and
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* remove timers.
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*
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* Copyright (C) 2013 by Open Source Routing.
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* Copyright (C) 2013 by Internet Systems Consortium, Inc. ("ISC")
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*
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* This file is part of Quagga
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*
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* Quagga is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* Quagga is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Quagga; see the file COPYING. If not, write to the Free
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* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <zebra.h>
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#include "thread.h"
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#include "pqueue.h"
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#include "prng.h"
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#define SCHEDULE_TIMERS 1000000
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#define REMOVE_TIMERS 500000
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struct thread_master *master;
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static int dummy_func(struct thread *thread)
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{
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return 0;
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}
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int main(int argc, char **argv)
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{
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struct prng *prng;
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int i;
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struct thread **timers;
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struct timeval tv_start, tv_lap, tv_stop;
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unsigned long t_schedule, t_remove;
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master = thread_master_create();
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prng = prng_new(0);
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timers = calloc(SCHEDULE_TIMERS, sizeof(*timers));
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/* create thread structures so they won't be allocated during the
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* time measurement */
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for (i = 0; i < SCHEDULE_TIMERS; i++)
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timers[i] = thread_add_timer_msec(master, dummy_func, NULL, 0);
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for (i = 0; i < SCHEDULE_TIMERS; i++)
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thread_cancel(timers[i]);
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quagga_gettime(QUAGGA_CLK_MONOTONIC, &tv_start);
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for (i = 0; i < SCHEDULE_TIMERS; i++)
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{
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long interval_msec;
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interval_msec = prng_rand(prng) % (100 * SCHEDULE_TIMERS);
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timers[i] = thread_add_timer_msec(master, dummy_func,
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NULL, interval_msec);
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}
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quagga_gettime(QUAGGA_CLK_MONOTONIC, &tv_lap);
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for (i = 0; i < REMOVE_TIMERS; i++)
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{
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int index;
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index = prng_rand(prng) % SCHEDULE_TIMERS;
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if (timers[index])
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thread_cancel(timers[index]);
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timers[index] = NULL;
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}
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quagga_gettime(QUAGGA_CLK_MONOTONIC, &tv_stop);
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t_schedule = 1000 * (tv_lap.tv_sec - tv_start.tv_sec);
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t_schedule += (tv_lap.tv_usec - tv_start.tv_usec) / 1000;
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t_remove = 1000 * (tv_stop.tv_sec - tv_lap.tv_sec);
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t_remove += (tv_stop.tv_usec - tv_lap.tv_usec) / 1000;
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printf("Scheduling %d random timers took %ld.%03ld seconds.\n",
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SCHEDULE_TIMERS, t_schedule/1000, t_schedule%1000);
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printf("Removing %d random timers took %ld.%03ld seconds.\n",
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REMOVE_TIMERS, t_remove/1000, t_remove%1000);
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fflush(stdout);
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free(timers);
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thread_master_free(master);
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prng_free(prng);
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return 0;
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}
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