xref: /minix3/tests/lib/librt/t_sched.c (revision 11be35a165022172ed3cea20f2b5df0307540b0e)
1*11be35a1SLionel Sambuc /* $NetBSD: t_sched.c,v 1.5 2012/03/25 04:11:42 christos Exp $ */
2*11be35a1SLionel Sambuc 
3*11be35a1SLionel Sambuc /*-
4*11be35a1SLionel Sambuc  * Copyright (c) 2011 The NetBSD Foundation, Inc.
5*11be35a1SLionel Sambuc  * All rights reserved.
6*11be35a1SLionel Sambuc  *
7*11be35a1SLionel Sambuc  * This code is derived from software contributed to The NetBSD Foundation
8*11be35a1SLionel Sambuc  * by Jukka Ruohonen.
9*11be35a1SLionel Sambuc  *
10*11be35a1SLionel Sambuc  * Redistribution and use in source and binary forms, with or without
11*11be35a1SLionel Sambuc  * modification, are permitted provided that the following conditions
12*11be35a1SLionel Sambuc  * are met:
13*11be35a1SLionel Sambuc  * 1. Redistributions of source code must retain the above copyright
14*11be35a1SLionel Sambuc  *    notice, this list of conditions and the following disclaimer.
15*11be35a1SLionel Sambuc  * 2. Redistributions in binary form must reproduce the above copyright
16*11be35a1SLionel Sambuc  *    notice, this list of conditions and the following disclaimer in the
17*11be35a1SLionel Sambuc  *    documentation and/or other materials provided with the distribution.
18*11be35a1SLionel Sambuc  *
19*11be35a1SLionel Sambuc  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20*11be35a1SLionel Sambuc  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21*11be35a1SLionel Sambuc  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22*11be35a1SLionel Sambuc  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23*11be35a1SLionel Sambuc  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24*11be35a1SLionel Sambuc  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25*11be35a1SLionel Sambuc  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26*11be35a1SLionel Sambuc  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27*11be35a1SLionel Sambuc  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28*11be35a1SLionel Sambuc  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29*11be35a1SLionel Sambuc  * POSSIBILITY OF SUCH DAMAGE.
30*11be35a1SLionel Sambuc  */
31*11be35a1SLionel Sambuc #include <sys/cdefs.h>
32*11be35a1SLionel Sambuc __RCSID("$NetBSD: t_sched.c,v 1.5 2012/03/25 04:11:42 christos Exp $");
33*11be35a1SLionel Sambuc 
34*11be35a1SLionel Sambuc #include <sched.h>
35*11be35a1SLionel Sambuc #include <limits.h>
36*11be35a1SLionel Sambuc #include <unistd.h>
37*11be35a1SLionel Sambuc 
38*11be35a1SLionel Sambuc #include <atf-c.h>
39*11be35a1SLionel Sambuc 
40*11be35a1SLionel Sambuc static void	 sched_priority_set(int, int);
41*11be35a1SLionel Sambuc 
42*11be35a1SLionel Sambuc ATF_TC(sched_getparam);
ATF_TC_HEAD(sched_getparam,tc)43*11be35a1SLionel Sambuc ATF_TC_HEAD(sched_getparam, tc)
44*11be35a1SLionel Sambuc {
45*11be35a1SLionel Sambuc 	atf_tc_set_md_var(tc, "descr", "A basic test of sched_getparam(3)");
46*11be35a1SLionel Sambuc }
47*11be35a1SLionel Sambuc 
ATF_TC_BODY(sched_getparam,tc)48*11be35a1SLionel Sambuc ATF_TC_BODY(sched_getparam, tc)
49*11be35a1SLionel Sambuc {
50*11be35a1SLionel Sambuc 	struct sched_param s1, s2;
51*11be35a1SLionel Sambuc 	pid_t p = getpid();
52*11be35a1SLionel Sambuc 
53*11be35a1SLionel Sambuc 	/*
54*11be35a1SLionel Sambuc 	 * IEEE Std 1003.1-2008: if the supplied pid is zero,
55*11be35a1SLionel Sambuc 	 * the parameters for the calling process are returned.
56*11be35a1SLionel Sambuc 	 */
57*11be35a1SLionel Sambuc 	ATF_REQUIRE(sched_getparam(0, &s1) == 0);
58*11be35a1SLionel Sambuc 	ATF_REQUIRE(sched_getparam(p, &s2) == 0);
59*11be35a1SLionel Sambuc 
60*11be35a1SLionel Sambuc 	ATF_CHECK_EQ(s1.sched_priority, s2.sched_priority);
61*11be35a1SLionel Sambuc 
62*11be35a1SLionel Sambuc 	/*
63*11be35a1SLionel Sambuc 	 * The behavior is undefined but should error
64*11be35a1SLionel Sambuc 	 * out in case the supplied PID is negative.
65*11be35a1SLionel Sambuc 	 */
66*11be35a1SLionel Sambuc 	ATF_REQUIRE(sched_getparam(-1, &s1) != 0);
67*11be35a1SLionel Sambuc }
68*11be35a1SLionel Sambuc 
69*11be35a1SLionel Sambuc ATF_TC(sched_priority);
ATF_TC_HEAD(sched_priority,tc)70*11be35a1SLionel Sambuc ATF_TC_HEAD(sched_priority, tc)
71*11be35a1SLionel Sambuc {
72*11be35a1SLionel Sambuc 	atf_tc_set_md_var(tc, "descr", "Test sched(3) priority ranges");
73*11be35a1SLionel Sambuc }
74*11be35a1SLionel Sambuc 
ATF_TC_BODY(sched_priority,tc)75*11be35a1SLionel Sambuc ATF_TC_BODY(sched_priority, tc)
76*11be35a1SLionel Sambuc {
77*11be35a1SLionel Sambuc 	static const int pol[3] = { SCHED_OTHER, SCHED_FIFO, SCHED_RR };
78*11be35a1SLionel Sambuc 	int pmax, pmin;
79*11be35a1SLionel Sambuc 	size_t i;
80*11be35a1SLionel Sambuc 
81*11be35a1SLionel Sambuc 	/*
82*11be35a1SLionel Sambuc 	 * Test that bogus values error out.
83*11be35a1SLionel Sambuc 	 */
84*11be35a1SLionel Sambuc 	if (INT_MAX > SCHED_RR)
85*11be35a1SLionel Sambuc 		ATF_REQUIRE(sched_get_priority_max(INT_MAX) != 0);
86*11be35a1SLionel Sambuc 
87*11be35a1SLionel Sambuc 	if (-INT_MAX < SCHED_OTHER)
88*11be35a1SLionel Sambuc 		ATF_REQUIRE(sched_get_priority_max(-INT_MAX) != 0);
89*11be35a1SLionel Sambuc 
90*11be35a1SLionel Sambuc 	/*
91*11be35a1SLionel Sambuc 	 * Test that we have a valid range.
92*11be35a1SLionel Sambuc 	 */
93*11be35a1SLionel Sambuc 	for (i = 0; i < __arraycount(pol); i++) {
94*11be35a1SLionel Sambuc 
95*11be35a1SLionel Sambuc 		pmax = sched_get_priority_max(pol[i]);
96*11be35a1SLionel Sambuc 		pmin = sched_get_priority_min(pol[i]);
97*11be35a1SLionel Sambuc 
98*11be35a1SLionel Sambuc 		ATF_REQUIRE(pmax != -1);
99*11be35a1SLionel Sambuc 		ATF_REQUIRE(pmin != -1);
100*11be35a1SLionel Sambuc 		ATF_REQUIRE(pmax > pmin);
101*11be35a1SLionel Sambuc 	}
102*11be35a1SLionel Sambuc }
103*11be35a1SLionel Sambuc 
104*11be35a1SLionel Sambuc static void
sched_priority_set(int pri,int pol)105*11be35a1SLionel Sambuc sched_priority_set(int pri, int pol)
106*11be35a1SLionel Sambuc {
107*11be35a1SLionel Sambuc 	struct sched_param sched;
108*11be35a1SLionel Sambuc 
109*11be35a1SLionel Sambuc 	sched.sched_priority = pri;
110*11be35a1SLionel Sambuc 
111*11be35a1SLionel Sambuc 	ATF_REQUIRE(pri >= 0);
112*11be35a1SLionel Sambuc 	ATF_REQUIRE(sched_setscheduler(0, pol, &sched) == 0);
113*11be35a1SLionel Sambuc 
114*11be35a1SLionel Sambuc 	/*
115*11be35a1SLionel Sambuc 	 * Test that the policy was changed.
116*11be35a1SLionel Sambuc 	 */
117*11be35a1SLionel Sambuc 	ATF_CHECK_EQ(sched_getscheduler(0), pol);
118*11be35a1SLionel Sambuc 
119*11be35a1SLionel Sambuc 	/*
120*11be35a1SLionel Sambuc 	 * And that sched_getparam(3) returns the new priority.
121*11be35a1SLionel Sambuc 	 */
122*11be35a1SLionel Sambuc 	sched.sched_priority = -1;
123*11be35a1SLionel Sambuc 
124*11be35a1SLionel Sambuc 	ATF_REQUIRE(sched_getparam(0, &sched) == 0);
125*11be35a1SLionel Sambuc 	ATF_CHECK_EQ(sched.sched_priority, pri);
126*11be35a1SLionel Sambuc }
127*11be35a1SLionel Sambuc 
128*11be35a1SLionel Sambuc ATF_TC(sched_setscheduler_1);
ATF_TC_HEAD(sched_setscheduler_1,tc)129*11be35a1SLionel Sambuc ATF_TC_HEAD(sched_setscheduler_1, tc)
130*11be35a1SLionel Sambuc {
131*11be35a1SLionel Sambuc 	atf_tc_set_md_var(tc, "descr", "sched_setscheduler(3), max, RR");
132*11be35a1SLionel Sambuc 	atf_tc_set_md_var(tc, "require.user", "root");
133*11be35a1SLionel Sambuc }
134*11be35a1SLionel Sambuc 
ATF_TC_BODY(sched_setscheduler_1,tc)135*11be35a1SLionel Sambuc ATF_TC_BODY(sched_setscheduler_1, tc)
136*11be35a1SLionel Sambuc {
137*11be35a1SLionel Sambuc 	int pri;
138*11be35a1SLionel Sambuc 
139*11be35a1SLionel Sambuc 	pri = sched_get_priority_max(SCHED_RR);
140*11be35a1SLionel Sambuc 	sched_priority_set(pri, SCHED_RR);
141*11be35a1SLionel Sambuc }
142*11be35a1SLionel Sambuc 
143*11be35a1SLionel Sambuc ATF_TC(sched_setscheduler_2);
ATF_TC_HEAD(sched_setscheduler_2,tc)144*11be35a1SLionel Sambuc ATF_TC_HEAD(sched_setscheduler_2, tc)
145*11be35a1SLionel Sambuc {
146*11be35a1SLionel Sambuc 	atf_tc_set_md_var(tc, "descr", "sched_setscheduler(3), min, RR");
147*11be35a1SLionel Sambuc 	atf_tc_set_md_var(tc, "require.user", "root");
148*11be35a1SLionel Sambuc }
149*11be35a1SLionel Sambuc 
ATF_TC_BODY(sched_setscheduler_2,tc)150*11be35a1SLionel Sambuc ATF_TC_BODY(sched_setscheduler_2, tc)
151*11be35a1SLionel Sambuc {
152*11be35a1SLionel Sambuc 	int pri;
153*11be35a1SLionel Sambuc 
154*11be35a1SLionel Sambuc 	pri = sched_get_priority_min(SCHED_RR);
155*11be35a1SLionel Sambuc 	sched_priority_set(pri, SCHED_RR);
156*11be35a1SLionel Sambuc }
157*11be35a1SLionel Sambuc 
158*11be35a1SLionel Sambuc ATF_TC(sched_setscheduler_3);
ATF_TC_HEAD(sched_setscheduler_3,tc)159*11be35a1SLionel Sambuc ATF_TC_HEAD(sched_setscheduler_3, tc)
160*11be35a1SLionel Sambuc {
161*11be35a1SLionel Sambuc 	atf_tc_set_md_var(tc, "descr", "sched_setscheduler(3), max, FIFO");
162*11be35a1SLionel Sambuc 	atf_tc_set_md_var(tc, "require.user", "root");
163*11be35a1SLionel Sambuc }
164*11be35a1SLionel Sambuc 
ATF_TC_BODY(sched_setscheduler_3,tc)165*11be35a1SLionel Sambuc ATF_TC_BODY(sched_setscheduler_3, tc)
166*11be35a1SLionel Sambuc {
167*11be35a1SLionel Sambuc 	int pri;
168*11be35a1SLionel Sambuc 
169*11be35a1SLionel Sambuc 	pri = sched_get_priority_max(SCHED_FIFO);
170*11be35a1SLionel Sambuc 	sched_priority_set(pri, SCHED_FIFO);
171*11be35a1SLionel Sambuc }
172*11be35a1SLionel Sambuc 
173*11be35a1SLionel Sambuc ATF_TC(sched_setscheduler_4);
ATF_TC_HEAD(sched_setscheduler_4,tc)174*11be35a1SLionel Sambuc ATF_TC_HEAD(sched_setscheduler_4, tc)
175*11be35a1SLionel Sambuc {
176*11be35a1SLionel Sambuc 	atf_tc_set_md_var(tc, "descr", "sched_setscheduler(3), min, FIFO");
177*11be35a1SLionel Sambuc 	atf_tc_set_md_var(tc, "require.user", "root");
178*11be35a1SLionel Sambuc }
179*11be35a1SLionel Sambuc 
ATF_TC_BODY(sched_setscheduler_4,tc)180*11be35a1SLionel Sambuc ATF_TC_BODY(sched_setscheduler_4, tc)
181*11be35a1SLionel Sambuc {
182*11be35a1SLionel Sambuc 	int pri;
183*11be35a1SLionel Sambuc 
184*11be35a1SLionel Sambuc 	pri = sched_get_priority_min(SCHED_FIFO);
185*11be35a1SLionel Sambuc 	sched_priority_set(pri, SCHED_FIFO);
186*11be35a1SLionel Sambuc }
187*11be35a1SLionel Sambuc 
188*11be35a1SLionel Sambuc ATF_TC(sched_rr_get_interval_1);
ATF_TC_HEAD(sched_rr_get_interval_1,tc)189*11be35a1SLionel Sambuc ATF_TC_HEAD(sched_rr_get_interval_1, tc)
190*11be35a1SLionel Sambuc {
191*11be35a1SLionel Sambuc 	atf_tc_set_md_var(tc, "descr", "Test sched_rr_get_interval(3), #1"
192*11be35a1SLionel Sambuc 	    " (PR lib/44768)");
193*11be35a1SLionel Sambuc 	atf_tc_set_md_var(tc, "require.user", "root");
194*11be35a1SLionel Sambuc }
195*11be35a1SLionel Sambuc 
ATF_TC_BODY(sched_rr_get_interval_1,tc)196*11be35a1SLionel Sambuc ATF_TC_BODY(sched_rr_get_interval_1, tc)
197*11be35a1SLionel Sambuc {
198*11be35a1SLionel Sambuc 	struct timespec tv;
199*11be35a1SLionel Sambuc 	int pri;
200*11be35a1SLionel Sambuc 
201*11be35a1SLionel Sambuc 	pri = sched_get_priority_min(SCHED_RR);
202*11be35a1SLionel Sambuc 	sched_priority_set(pri, SCHED_RR);
203*11be35a1SLionel Sambuc 
204*11be35a1SLionel Sambuc 	/*
205*11be35a1SLionel Sambuc 	 * This should fail with ESRCH for invalid PID.
206*11be35a1SLionel Sambuc 	 */
207*11be35a1SLionel Sambuc 	ATF_REQUIRE(sched_rr_get_interval(-INT_MAX, &tv) != 0);
208*11be35a1SLionel Sambuc }
209*11be35a1SLionel Sambuc 
210*11be35a1SLionel Sambuc ATF_TC(sched_rr_get_interval_2);
ATF_TC_HEAD(sched_rr_get_interval_2,tc)211*11be35a1SLionel Sambuc ATF_TC_HEAD(sched_rr_get_interval_2, tc)
212*11be35a1SLionel Sambuc {
213*11be35a1SLionel Sambuc 	atf_tc_set_md_var(tc, "descr", "Test sched_rr_get_interval(3), #2");
214*11be35a1SLionel Sambuc 	atf_tc_set_md_var(tc, "require.user", "root");
215*11be35a1SLionel Sambuc }
216*11be35a1SLionel Sambuc 
ATF_TC_BODY(sched_rr_get_interval_2,tc)217*11be35a1SLionel Sambuc ATF_TC_BODY(sched_rr_get_interval_2, tc)
218*11be35a1SLionel Sambuc {
219*11be35a1SLionel Sambuc 	struct timespec tv1, tv2;
220*11be35a1SLionel Sambuc 	int pri;
221*11be35a1SLionel Sambuc 
222*11be35a1SLionel Sambuc 	pri = sched_get_priority_min(SCHED_RR);
223*11be35a1SLionel Sambuc 	sched_priority_set(pri, SCHED_RR);
224*11be35a1SLionel Sambuc 
225*11be35a1SLionel Sambuc 	tv1.tv_sec = tv2.tv_sec = -1;
226*11be35a1SLionel Sambuc 	tv1.tv_nsec = tv2.tv_nsec = -1;
227*11be35a1SLionel Sambuc 
228*11be35a1SLionel Sambuc 	ATF_REQUIRE(sched_rr_get_interval(0, &tv1) == 0);
229*11be35a1SLionel Sambuc 	ATF_REQUIRE(sched_rr_get_interval(getpid(), &tv2) == 0);
230*11be35a1SLionel Sambuc 
231*11be35a1SLionel Sambuc 	ATF_REQUIRE(tv1.tv_sec != -1);
232*11be35a1SLionel Sambuc 	ATF_REQUIRE(tv2.tv_sec != -1);
233*11be35a1SLionel Sambuc 
234*11be35a1SLionel Sambuc 	ATF_REQUIRE(tv1.tv_nsec != -1);
235*11be35a1SLionel Sambuc 	ATF_REQUIRE(tv2.tv_nsec != -1);
236*11be35a1SLionel Sambuc 
237*11be35a1SLionel Sambuc 	ATF_REQUIRE(tv1.tv_sec == tv2.tv_sec);
238*11be35a1SLionel Sambuc 	ATF_REQUIRE(tv1.tv_nsec == tv2.tv_nsec);
239*11be35a1SLionel Sambuc }
240*11be35a1SLionel Sambuc 
ATF_TP_ADD_TCS(tp)241*11be35a1SLionel Sambuc ATF_TP_ADD_TCS(tp)
242*11be35a1SLionel Sambuc {
243*11be35a1SLionel Sambuc 
244*11be35a1SLionel Sambuc 	ATF_TP_ADD_TC(tp, sched_getparam);
245*11be35a1SLionel Sambuc 	ATF_TP_ADD_TC(tp, sched_priority);
246*11be35a1SLionel Sambuc 
247*11be35a1SLionel Sambuc 	ATF_TP_ADD_TC(tp, sched_setscheduler_1);
248*11be35a1SLionel Sambuc 	ATF_TP_ADD_TC(tp, sched_setscheduler_2);
249*11be35a1SLionel Sambuc 	ATF_TP_ADD_TC(tp, sched_setscheduler_3);
250*11be35a1SLionel Sambuc 	ATF_TP_ADD_TC(tp, sched_setscheduler_4);
251*11be35a1SLionel Sambuc 
252*11be35a1SLionel Sambuc 	ATF_TP_ADD_TC(tp, sched_rr_get_interval_1);
253*11be35a1SLionel Sambuc 	ATF_TP_ADD_TC(tp, sched_rr_get_interval_2);
254*11be35a1SLionel Sambuc 
255*11be35a1SLionel Sambuc 	return atf_no_error();
256*11be35a1SLionel Sambuc }
257