1 // SPDX-License-Identifier: GPL-2.0 1 // SPDX-License-Identifier: GPL-2.0
2 #include "tests.h" 2 #include "tests.h"
3 #include "machine.h" 3 #include "machine.h"
4 #include "thread.h" 4 #include "thread.h"
5 #include "debug.h" 5 #include "debug.h"
6 6
7 static int test__thread_maps_share(struct test 7 static int test__thread_maps_share(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
8 { 8 {
9 struct machines machines; 9 struct machines machines;
10 struct machine *machine; 10 struct machine *machine;
11 11
12 /* thread group */ 12 /* thread group */
13 struct thread *leader; 13 struct thread *leader;
14 struct thread *t1, *t2, *t3; 14 struct thread *t1, *t2, *t3;
15 struct maps *maps; 15 struct maps *maps;
16 16
17 /* other process */ 17 /* other process */
18 struct thread *other, *other_leader; 18 struct thread *other, *other_leader;
19 struct maps *other_maps; 19 struct maps *other_maps;
20 20
21 /* 21 /*
22 * This test create 2 processes abstra 22 * This test create 2 processes abstractions (struct thread)
23 * with several threads and checks the 23 * with several threads and checks they properly share and
24 * maintain maps info (struct maps). 24 * maintain maps info (struct maps).
25 * 25 *
26 * thread group (pid: 0, tids: 0, 1, 2 26 * thread group (pid: 0, tids: 0, 1, 2, 3)
27 * other group (pid: 4, tids: 4, 5) 27 * other group (pid: 4, tids: 4, 5)
28 */ 28 */
29 29
30 machines__init(&machines); 30 machines__init(&machines);
31 machine = &machines.host; 31 machine = &machines.host;
32 32
33 /* create process with 4 threads */ 33 /* create process with 4 threads */
34 leader = machine__findnew_thread(machi 34 leader = machine__findnew_thread(machine, 0, 0);
35 t1 = machine__findnew_thread(machi 35 t1 = machine__findnew_thread(machine, 0, 1);
36 t2 = machine__findnew_thread(machi 36 t2 = machine__findnew_thread(machine, 0, 2);
37 t3 = machine__findnew_thread(machi 37 t3 = machine__findnew_thread(machine, 0, 3);
38 38
39 /* and create 1 separated process, wit 39 /* and create 1 separated process, without thread leader */
40 other = machine__findnew_thread(machi 40 other = machine__findnew_thread(machine, 4, 5);
41 41
42 TEST_ASSERT_VAL("failed to create thre 42 TEST_ASSERT_VAL("failed to create threads",
43 leader && t1 && t2 && 43 leader && t1 && t2 && t3 && other);
44 44
45 maps = thread__maps(leader); !! 45 maps = leader->maps;
46 TEST_ASSERT_EQUAL("wrong refcnt", refc !! 46 TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&maps->refcnt), 4);
47 47
48 /* test the maps pointer is shared */ 48 /* test the maps pointer is shared */
49 TEST_ASSERT_VAL("maps don't match", ma !! 49 TEST_ASSERT_VAL("maps don't match", maps == t1->maps);
50 TEST_ASSERT_VAL("maps don't match", ma !! 50 TEST_ASSERT_VAL("maps don't match", maps == t2->maps);
51 TEST_ASSERT_VAL("maps don't match", ma !! 51 TEST_ASSERT_VAL("maps don't match", maps == t3->maps);
52 52
53 /* 53 /*
54 * Verify the other leader was created 54 * Verify the other leader was created by previous call.
55 * It should have shared maps with no 55 * It should have shared maps with no change in
56 * refcnt. 56 * refcnt.
57 */ 57 */
58 other_leader = machine__find_thread(ma 58 other_leader = machine__find_thread(machine, 4, 4);
59 TEST_ASSERT_VAL("failed to find other 59 TEST_ASSERT_VAL("failed to find other leader", other_leader);
60 60
61 /* 61 /*
62 * Ok, now that all the rbtree related 62 * Ok, now that all the rbtree related operations were done,
63 * lets remove all of them from there 63 * lets remove all of them from there so that we can do the
64 * refcounting tests. 64 * refcounting tests.
65 */ 65 */
66 machine__remove_thread(machine, leader 66 machine__remove_thread(machine, leader);
67 machine__remove_thread(machine, t1); 67 machine__remove_thread(machine, t1);
68 machine__remove_thread(machine, t2); 68 machine__remove_thread(machine, t2);
69 machine__remove_thread(machine, t3); 69 machine__remove_thread(machine, t3);
70 machine__remove_thread(machine, other) 70 machine__remove_thread(machine, other);
71 machine__remove_thread(machine, other_ 71 machine__remove_thread(machine, other_leader);
72 72
73 other_maps = thread__maps(other); !! 73 other_maps = other->maps;
74 TEST_ASSERT_EQUAL("wrong refcnt", refc !! 74 TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&other_maps->refcnt), 2);
75 75
76 TEST_ASSERT_VAL("maps don't match", ma !! 76 TEST_ASSERT_VAL("maps don't match", other_maps == other_leader->maps);
77 77
78 /* release thread group */ 78 /* release thread group */
79 thread__put(t3); !! 79 thread__put(leader);
80 TEST_ASSERT_EQUAL("wrong refcnt", refc !! 80 TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&maps->refcnt), 3);
81 <<
82 thread__put(t2); <<
83 TEST_ASSERT_EQUAL("wrong refcnt", refc <<
84 81
85 thread__put(t1); 82 thread__put(t1);
86 TEST_ASSERT_EQUAL("wrong refcnt", refc !! 83 TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&maps->refcnt), 2);
87 84
88 thread__put(leader); !! 85 thread__put(t2);
>> 86 TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&maps->refcnt), 1);
>> 87
>> 88 thread__put(t3);
89 89
90 /* release other group */ 90 /* release other group */
91 thread__put(other_leader); 91 thread__put(other_leader);
92 TEST_ASSERT_EQUAL("wrong refcnt", refc !! 92 TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(&other_maps->refcnt), 1);
93 93
94 thread__put(other); 94 thread__put(other);
95 95
96 machines__exit(&machines); 96 machines__exit(&machines);
97 return 0; 97 return 0;
98 } 98 }
99 99
100 DEFINE_SUITE("Share thread maps", thread_maps_ 100 DEFINE_SUITE("Share thread maps", thread_maps_share);
101 101
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