blob: c0ed56f7efc6ad5f497a7eb53e6f509daf654246 [file] [log] [blame]
Jiri Olsafabf012382014-03-17 14:39:00 +01001#include "tests.h"
2#include "machine.h"
3#include "thread.h"
4#include "map.h"
Jiri Olsa84f5d362014-07-14 23:46:48 +02005#include "debug.h"
Jiri Olsafabf012382014-03-17 14:39:00 +01006
7int test__thread_mg_share(void)
8{
9 struct machines machines;
10 struct machine *machine;
11
12 /* thread group */
13 struct thread *leader;
14 struct thread *t1, *t2, *t3;
15 struct map_groups *mg;
16
17 /* other process */
18 struct thread *other, *other_leader;
19 struct map_groups *other_mg;
20
21 /*
22 * This test create 2 processes abstractions (struct thread)
23 * with several threads and checks they properly share and
24 * maintain map groups info (struct map_groups).
25 *
26 * thread group (pid: 0, tids: 0, 1, 2, 3)
27 * other group (pid: 4, tids: 4, 5)
28 */
29
30 machines__init(&machines);
31 machine = &machines.host;
32
33 /* create process with 4 threads */
34 leader = machine__findnew_thread(machine, 0, 0);
35 t1 = machine__findnew_thread(machine, 0, 1);
36 t2 = machine__findnew_thread(machine, 0, 2);
37 t3 = machine__findnew_thread(machine, 0, 3);
38
39 /* and create 1 separated process, without thread leader */
40 other = machine__findnew_thread(machine, 4, 5);
41
42 TEST_ASSERT_VAL("failed to create threads",
43 leader && t1 && t2 && t3 && other);
44
45 mg = leader->mg;
Arnaldo Carvalho de Melo8f196012015-05-11 16:30:20 -030046 TEST_ASSERT_EQUAL("wrong refcnt", mg->refcnt, 4);
Jiri Olsafabf012382014-03-17 14:39:00 +010047
48 /* test the map groups pointer is shared */
49 TEST_ASSERT_VAL("map groups don't match", mg == t1->mg);
50 TEST_ASSERT_VAL("map groups don't match", mg == t2->mg);
51 TEST_ASSERT_VAL("map groups don't match", mg == t3->mg);
52
53 /*
54 * Verify the other leader was created by previous call.
55 * It should have shared map groups with no change in
56 * refcnt.
57 */
58 other_leader = machine__find_thread(machine, 4, 4);
59 TEST_ASSERT_VAL("failed to find other leader", other_leader);
60
Arnaldo Carvalho de Melo8b00f4692015-05-11 18:13:14 -030061 /*
62 * Ok, now that all the rbtree related operations were done,
63 * lets remove all of them from there so that we can do the
64 * refcounting tests.
65 */
66 machine__remove_thread(machine, leader);
67 machine__remove_thread(machine, t1);
68 machine__remove_thread(machine, t2);
69 machine__remove_thread(machine, t3);
70 machine__remove_thread(machine, other);
71 machine__remove_thread(machine, other_leader);
72
Jiri Olsafabf012382014-03-17 14:39:00 +010073 other_mg = other->mg;
Arnaldo Carvalho de Melo8f196012015-05-11 16:30:20 -030074 TEST_ASSERT_EQUAL("wrong refcnt", other_mg->refcnt, 2);
Jiri Olsafabf012382014-03-17 14:39:00 +010075
76 TEST_ASSERT_VAL("map groups don't match", other_mg == other_leader->mg);
77
78 /* release thread group */
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -030079 thread__put(leader);
Arnaldo Carvalho de Melo8f196012015-05-11 16:30:20 -030080 TEST_ASSERT_EQUAL("wrong refcnt", mg->refcnt, 3);
Jiri Olsafabf012382014-03-17 14:39:00 +010081
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -030082 thread__put(t1);
Arnaldo Carvalho de Melo8f196012015-05-11 16:30:20 -030083 TEST_ASSERT_EQUAL("wrong refcnt", mg->refcnt, 2);
Jiri Olsafabf012382014-03-17 14:39:00 +010084
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -030085 thread__put(t2);
Arnaldo Carvalho de Melo8f196012015-05-11 16:30:20 -030086 TEST_ASSERT_EQUAL("wrong refcnt", mg->refcnt, 1);
Jiri Olsafabf012382014-03-17 14:39:00 +010087
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -030088 thread__put(t3);
Jiri Olsafabf012382014-03-17 14:39:00 +010089
90 /* release other group */
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -030091 thread__put(other_leader);
Arnaldo Carvalho de Melo8f196012015-05-11 16:30:20 -030092 TEST_ASSERT_EQUAL("wrong refcnt", other_mg->refcnt, 1);
Jiri Olsafabf012382014-03-17 14:39:00 +010093
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -030094 thread__put(other);
Jiri Olsafabf012382014-03-17 14:39:00 +010095
Jiri Olsafabf012382014-03-17 14:39:00 +010096 machines__exit(&machines);
97 return 0;
98}