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1// SPDX-License-Identifier: GPL-2.02#include "tests.h"3#include "machine.h"4#include "thread.h"5#include "debug.h"6 7static int test__thread_maps_share(struct test_suite *test __maybe_unused, int subtest __maybe_unused)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 maps *maps;16 17 /* other process */18 struct thread *other, *other_leader;19 struct maps *other_maps;20 21 /*22 * This test create 2 processes abstractions (struct thread)23 * with several threads and checks they properly share and24 * maintain maps info (struct maps).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 maps = thread__maps(leader);46 TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(maps__refcnt(maps)), 4);47 48 /* test the maps pointer is shared */49 TEST_ASSERT_VAL("maps don't match", maps__equal(maps, thread__maps(t1)));50 TEST_ASSERT_VAL("maps don't match", maps__equal(maps, thread__maps(t2)));51 TEST_ASSERT_VAL("maps don't match", maps__equal(maps, thread__maps(t3)));52 53 /*54 * Verify the other leader was created by previous call.55 * It should have shared maps with no change in56 * refcnt.57 */58 other_leader = machine__find_thread(machine, 4, 4);59 TEST_ASSERT_VAL("failed to find other leader", other_leader);60 61 /*62 * Ok, now that all the rbtree related operations were done,63 * lets remove all of them from there so that we can do the64 * 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 73 other_maps = thread__maps(other);74 TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(maps__refcnt(other_maps)), 2);75 76 TEST_ASSERT_VAL("maps don't match", maps__equal(other_maps, thread__maps(other_leader)));77 78 /* release thread group */79 thread__put(t3);80 TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(maps__refcnt(maps)), 3);81 82 thread__put(t2);83 TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(maps__refcnt(maps)), 2);84 85 thread__put(t1);86 TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(maps__refcnt(maps)), 1);87 88 thread__put(leader);89 90 /* release other group */91 thread__put(other_leader);92 TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(maps__refcnt(other_maps)), 1);93 94 thread__put(other);95 96 machines__exit(&machines);97 return 0;98}99 100DEFINE_SUITE("Share thread maps", thread_maps_share);101