// SPDX-License-Identifier: GPL-2.0#include "tests.h"#include "machine.h"#include "thread.h"#include "debug.h" static int test__thread_maps_share(struct test_suite *test __maybe_unused, int subtest __maybe_unused){	struct machines machines;	struct machine *machine; 	/* thread group */	struct thread *leader;	struct thread *t1, *t2, *t3;	struct maps *maps; 	/* other process */	struct thread *other, *other_leader;	struct maps *other_maps; 	/*	 * This test create 2 processes abstractions (struct thread)	 * with several threads and checks they properly share and	 * maintain maps info (struct maps).	 *	 * thread group (pid: 0, tids: 0, 1, 2, 3)	 * other  group (pid: 4, tids: 4, 5)	*/ 	TEST_ASSERT_VAL("failed to init machines", machines__init(&machines) == 0);	machine = &machines.host; 	/* create process with 4 threads */	leader = machine__findnew_thread(machine, 0, 0);	t1     = machine__findnew_thread(machine, 0, 1);	t2     = machine__findnew_thread(machine, 0, 2);	t3     = machine__findnew_thread(machine, 0, 3); 	/* and create 1 separated process, without thread leader */	other  = machine__findnew_thread(machine, 4, 5); 	TEST_ASSERT_VAL("failed to create threads",			leader && t1 && t2 && t3 && other); 	maps = thread__maps(leader);	TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(maps__refcnt(maps)), 4); 	/* test the maps pointer is shared */	TEST_ASSERT_VAL("maps don't match", maps__equal(maps, thread__maps(t1)));	TEST_ASSERT_VAL("maps don't match", maps__equal(maps, thread__maps(t2)));	TEST_ASSERT_VAL("maps don't match", maps__equal(maps, thread__maps(t3))); 	/*	 * Verify the other leader was created by previous call.	 * It should have shared maps with no change in	 * refcnt.	 */	other_leader = machine__find_thread(machine, 4, 4);	TEST_ASSERT_VAL("failed to find other leader", other_leader); 	/*	 * Ok, now that all the rbtree related operations were done,	 * lets remove all of them from there so that we can do the	 * refcounting tests.	 */	machine__remove_thread(machine, leader);	machine__remove_thread(machine, t1);	machine__remove_thread(machine, t2);	machine__remove_thread(machine, t3);	machine__remove_thread(machine, other);	machine__remove_thread(machine, other_leader); 	other_maps = thread__maps(other);	TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(maps__refcnt(other_maps)), 2); 	TEST_ASSERT_VAL("maps don't match", maps__equal(other_maps, thread__maps(other_leader))); 	/* release thread group */	thread__put(t3);	TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(maps__refcnt(maps)), 3); 	thread__put(t2);	TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(maps__refcnt(maps)), 2); 	thread__put(t1);	TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(maps__refcnt(maps)), 1); 	thread__put(leader); 	/* release other group  */	thread__put(other_leader);	TEST_ASSERT_EQUAL("wrong refcnt", refcount_read(maps__refcnt(other_maps)), 1); 	thread__put(other); 	machines__exit(&machines);	return 0;} DEFINE_SUITE("Share thread maps", thread_maps_share);