Remove unit tests for the never-exposed _lwp_gettid(2).
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thorpej
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/* $NetBSD: t_lwp_tid.c,v 1.1 2020/04/04 20:20:12 thorpej Exp $ */
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/*-
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* Copyright (c) 2019, 2020 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__COPYRIGHT("@(#) Copyright (c) 2019\
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The NetBSD Foundation, inc. All rights reserved.");
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__RCSID("$NetBSD: t_lwp_tid.c,v 1.1 2020/04/04 20:20:12 thorpej Exp $");
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#include <sys/mman.h>
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#include <errno.h>
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#include <lwp.h>
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#include <stdio.h>
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#include <time.h>
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#include <atf-c.h>
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#define MAX_LWPS 8
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#define STACK_SIZE 65536
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#define LWP_TID_MASK 0x3fffffff /* placeholder */
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struct lwp_data {
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ucontext_t context;
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void *stack_base;
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lwpid_t lwpid;
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lwpid_t threadid;
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};
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struct lwp_data lwp_data[MAX_LWPS];
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lwpid_t master_tid;
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static bool
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tid_is_unique(int index, lwpid_t tid)
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{
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if (tid == master_tid)
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return false;
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for (int i = 0; i < MAX_LWPS; i++) {
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if (i == index)
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continue;
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if (lwp_data[i].threadid == tid)
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return false;
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}
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return true;
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}
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static void
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gettid_test(void *arg)
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{
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struct lwp_data *d = arg;
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d->threadid = _lwp_gettid();
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_lwp_exit();
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}
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ATF_TC(lwp_gettid);
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ATF_TC_HEAD(lwp_gettid, tc)
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{
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atf_tc_set_md_var(tc, "descr", "checks _lwp_gettid()");
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}
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ATF_TC_BODY(lwp_gettid, tc)
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{
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int i;
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master_tid = _lwp_gettid();
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ATF_REQUIRE(master_tid != 0);
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ATF_REQUIRE((master_tid & ~LWP_TID_MASK) == 0);
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/* Initialize our LWP data. */
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for (i = 0; i < MAX_LWPS; i++) {
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lwp_data[i].stack_base = mmap(NULL, STACK_SIZE,
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PROT_READ | PROT_WRITE,
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MAP_ANON | MAP_STACK | MAP_PRIVATE, -1, 0);
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ATF_REQUIRE(lwp_data[i].stack_base != MAP_FAILED);
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_lwp_makecontext(&lwp_data[i].context, gettid_test,
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&lwp_data[i], NULL, lwp_data[i].stack_base,
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STACK_SIZE);
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lwp_data[i].threadid = 0;
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}
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/* Now kick off all the LWPs... */
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for (i = 0; i < MAX_LWPS; i++) {
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ATF_REQUIRE(_lwp_create(&lwp_data[i].context, 0,
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&lwp_data[i].lwpid) == 0);
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printf("Started LWP %d\n", lwp_data[i].lwpid);
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}
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/* ...and wait for them to exit. */
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for (i = 0; i < MAX_LWPS;) {
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lwpid_t reaped_lwpid;
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int rv = _lwp_wait(0, &reaped_lwpid);
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if (rv == 0) {
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printf("Reaped LWP %d\n", reaped_lwpid);
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i++;
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continue;
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} else {
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ATF_REQUIRE(errno != EDEADLK);
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continue;
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}
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}
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/* Check the TIDs. */
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for (i = 0; i < MAX_LWPS; i++) {
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printf("Checking tid[%d] %d (0x%08x)\n", i,
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lwp_data[i].threadid, lwp_data[i].threadid);
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ATF_REQUIRE(lwp_data[i].threadid != 0);
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ATF_REQUIRE((lwp_data[i].threadid & ~LWP_TID_MASK) == 0);
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ATF_REQUIRE(tid_is_unique(i, lwp_data[i].threadid));
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}
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, lwp_gettid);
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return atf_no_error();
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}
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