To do so, a few dependencies have been imported: * external/bsd/lutok * external/mit/lua * external/public-domain/sqlite * external/public-domain/xz The Kyua framework is the new generation of ATF (Automated Test Framework), it is composed of: * external/bsd/atf * external/bsd/kyua-atf-compat * external/bsd/kyua-cli * external/bsd/kyua-tester * tests Kyua/ATF being written in C++, it depends on libstdc++ which is provided by GCC. As this is not part of the sources, Kyua is only compiled when the native GCC utils are installed. To install Kyua do the following: * In a cross-build enviromnent, add the following to the build.sh commandline: -V MKBINUTILS=yes -V MKGCCCMDS=yes WARNING: At this point the import is still experimental, and not supported on native builds (a.k.a make build). Change-Id: I26aee23c5bbd2d64adcb7c1beb98fe0d479d7ada
337 lines
8 KiB
C
337 lines
8 KiB
C
/* $NetBSD: t_sleep.c,v 1.7 2013/04/12 17:13:55 christos Exp $ */
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/*-
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* Copyright (c) 2006 Frank Kardel
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <atf-c.h>
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#include <errno.h>
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#include <poll.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/cdefs.h>
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#include <sys/event.h>
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#include <sys/signal.h>
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#include "isqemu.h"
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#define BILLION 1000000000LL /* nano-seconds per second */
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#define MILLION 1000000LL /* nano-seconds per milli-second */
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#define ALARM 6 /* SIGALRM after this many seconds */
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#define MAXSLEEP 22 /* Maximum delay in seconds */
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#define KEVNT_TIMEOUT 10300 /* measured in milli-seconds */
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#define FUZZ (40 * MILLION) /* scheduling fuzz accepted - 40 ms */
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/*
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* Timer notes
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*
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* Most tests use FUZZ as their initial delay value, but 'sleep'
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* starts at 1sec (since it cannot handle sub-second intervals).
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* Subsequent passes double the previous interval, up to MAXSLEEP.
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*
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* The current values result in 5 passes for the 'sleep' test (at 1,
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* 2, 4, 8, and 16 seconds) and 10 passes for the other tests (at
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* 0.04, 0.08, 0.16, 0.32, 0.64, 1.28, 2.56, 5.12, 10.24, and 20.48
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* seconds).
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*
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* The ALARM is only set if the current pass's delay is longer, and
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* only if the ALARM has not already been triggered.
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*
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* The 'kevent' test needs the ALARM to be set on a different pass
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* from when the KEVNT_TIMEOUT fires. So set ALARM to fire on the
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* penultimate pass, and the KEVNT_TIMEOUT on the final pass. We
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* set KEVNT_TIMEOUT just barely long enough to put it into the
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* last test pass, and set MAXSLEEP a couple seconds longer than
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* necessary,in order to avoid a QEMU bug which nearly doubles
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* some timers.
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*/
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static volatile int sig;
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int sleeptest(int (*)(struct timespec *, struct timespec *), bool, bool);
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int do_nanosleep(struct timespec *, struct timespec *);
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int do_select(struct timespec *, struct timespec *);
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int do_poll(struct timespec *, struct timespec *);
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int do_sleep(struct timespec *, struct timespec *);
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int do_kevent(struct timespec *, struct timespec *);
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void sigalrm(int);
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void
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sigalrm(int s)
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{
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sig++;
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}
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int
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do_nanosleep(struct timespec *delay, struct timespec *remain)
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{
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int ret;
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if (nanosleep(delay, remain) == -1)
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ret = (errno == EINTR ? 0 : errno);
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else
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ret = 0;
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return ret;
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}
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int
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do_select(struct timespec *delay, struct timespec *remain)
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{
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int ret;
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struct timeval tv;
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TIMESPEC_TO_TIMEVAL(&tv, delay);
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if (select(0, NULL, NULL, NULL, &tv) == -1)
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ret = (errno == EINTR ? 0 : errno);
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else
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ret = 0;
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return ret;
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}
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int
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do_poll(struct timespec *delay, struct timespec *remain)
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{
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int ret;
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struct timeval tv;
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TIMESPEC_TO_TIMEVAL(&tv, delay);
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if (pollts(NULL, 0, delay, NULL) == -1)
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ret = (errno == EINTR ? 0 : errno);
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else
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ret = 0;
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return ret;
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}
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int
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do_sleep(struct timespec *delay, struct timespec *remain)
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{
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struct timeval tv;
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TIMESPEC_TO_TIMEVAL(&tv, delay);
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remain->tv_sec = sleep(delay->tv_sec);
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remain->tv_nsec = 0;
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return 0;
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}
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int
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do_kevent(struct timespec *delay, struct timespec *remain)
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{
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struct kevent ktimer;
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struct kevent kresult;
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int rtc, kq, kerrno;
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int tmo;
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ATF_REQUIRE_MSG((kq = kqueue()) != -1, "kqueue: %s", strerror(errno));
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tmo = KEVNT_TIMEOUT;
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/*
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* If we expect the KEVNT_TIMEOUT to fire, and we're running
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* under QEMU, make sure the delay is long enough to account
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* for the effects of PR kern/43997 !
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*/
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if (isQEMU() &&
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tmo/1000 < delay->tv_sec && tmo/500 > delay->tv_sec)
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delay->tv_sec = MAXSLEEP;
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EV_SET(&ktimer, 1, EVFILT_TIMER, EV_ADD, 0, tmo, 0);
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rtc = kevent(kq, &ktimer, 1, &kresult, 1, delay);
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kerrno = errno;
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(void)close(kq);
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if (rtc == -1) {
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ATF_REQUIRE_MSG(kerrno == EINTR, "kevent: %s", strerror(errno));
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return 0;
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}
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if (delay->tv_sec * BILLION + delay->tv_nsec > tmo * MILLION)
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ATF_REQUIRE_MSG(rtc > 0,
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"kevent: KEVNT_TIMEOUT did not cause EVFILT_TIMER event");
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return 0;
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}
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ATF_TC(nanosleep);
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ATF_TC_HEAD(nanosleep, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test nanosleep(2) timing");
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atf_tc_set_md_var(tc, "timeout", "65");
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}
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ATF_TC_BODY(nanosleep, tc)
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{
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sleeptest(do_nanosleep, true, false);
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}
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ATF_TC(select);
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ATF_TC_HEAD(select, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test select(2) timing");
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atf_tc_set_md_var(tc, "timeout", "65");
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}
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ATF_TC_BODY(select, tc)
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{
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sleeptest(do_select, true, true);
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}
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ATF_TC(poll);
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ATF_TC_HEAD(poll, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test poll(2) timing");
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atf_tc_set_md_var(tc, "timeout", "65");
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}
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ATF_TC_BODY(poll, tc)
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{
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sleeptest(do_poll, true, true);
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}
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ATF_TC(sleep);
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ATF_TC_HEAD(sleep, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test sleep(3) timing");
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atf_tc_set_md_var(tc, "timeout", "65");
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}
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ATF_TC_BODY(sleep, tc)
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{
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sleeptest(do_sleep, false, false);
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}
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ATF_TC(kevent);
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ATF_TC_HEAD(kevent, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test kevent(2) timing");
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atf_tc_set_md_var(tc, "timeout", "65");
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}
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ATF_TC_BODY(kevent, tc)
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{
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sleeptest(do_kevent, true, true);
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}
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int
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sleeptest(int (*test)(struct timespec *, struct timespec *),
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bool subsec, bool sim_remain)
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{
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struct timespec tsa, tsb, tslp, tremain;
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int64_t delta1, delta2, delta3, round;
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sig = 0;
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signal(SIGALRM, sigalrm);
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if (subsec) {
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round = 1;
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delta3 = FUZZ;
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} else {
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round = 1000000000;
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delta3 = round;
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}
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tslp.tv_sec = delta3 / 1000000000;
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tslp.tv_nsec = delta3 % 1000000000;
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while (tslp.tv_sec <= MAXSLEEP) {
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/*
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* disturb sleep by signal on purpose
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*/
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if (tslp.tv_sec > ALARM && sig == 0)
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alarm(ALARM);
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clock_gettime(CLOCK_REALTIME, &tsa);
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(*test)(&tslp, &tremain);
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clock_gettime(CLOCK_REALTIME, &tsb);
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if (sim_remain) {
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timespecsub(&tsb, &tsa, &tremain);
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timespecsub(&tslp, &tremain, &tremain);
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}
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delta1 = (int64_t)tsb.tv_sec - (int64_t)tsa.tv_sec;
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delta1 *= BILLION;
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delta1 += (int64_t)tsb.tv_nsec - (int64_t)tsa.tv_nsec;
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delta2 = (int64_t)tremain.tv_sec * BILLION;
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delta2 += (int64_t)tremain.tv_nsec;
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delta3 = (int64_t)tslp.tv_sec * BILLION;
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delta3 += (int64_t)tslp.tv_nsec - delta1 - delta2;
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delta3 /= round;
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delta3 *= round;
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if (delta3 > FUZZ || delta3 < -FUZZ) {
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if (!sim_remain)
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atf_tc_expect_fail("Long reschedule latency "
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"due to PR kern/43997");
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atf_tc_fail("Reschedule latency %"PRId64" exceeds "
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"allowable fuzz %lld", delta3, FUZZ);
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}
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delta3 = (int64_t)tslp.tv_sec * 2 * BILLION;
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delta3 += (int64_t)tslp.tv_nsec * 2;
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delta3 /= round;
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delta3 *= round;
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if (delta3 < FUZZ)
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break;
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tslp.tv_sec = delta3 / BILLION;
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tslp.tv_nsec = delta3 % BILLION;
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}
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ATF_REQUIRE_MSG(sig == 1, "Alarm did not fire!");
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atf_tc_pass();
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, nanosleep);
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ATF_TP_ADD_TC(tp, select);
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ATF_TP_ADD_TC(tp, poll);
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ATF_TP_ADD_TC(tp, sleep);
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ATF_TP_ADD_TC(tp, kevent);
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return atf_no_error();
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}
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