1/* Copyright (C) 2003-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18/* Test whether pthread_create/pthread_join with user defined stacks
19 doesn't leak memory.
20 NOTE: this tests functionality beyond POSIX. In POSIX user defined
21 stacks cannot be ever freed once used by pthread_create nor they can
22 be reused for other thread. */
23
24#include <limits.h>
25#include <mcheck.h>
26#include <pthread.h>
27#include <stdlib.h>
28#include <stdio.h>
29#include <string.h>
30#include <unistd.h>
31
32static int seen;
33
34static void *
35tf (void *p)
36{
37 ++seen;
38 return NULL;
39}
40
41static int
42do_test (void)
43{
44 mtrace ();
45
46 void *stack;
47 int res = posix_memalign (memptr: &stack, alignment: getpagesize (), size: 4 * PTHREAD_STACK_MIN);
48 if (res)
49 {
50 printf (format: "malloc failed %s\n", strerror (errnum: res));
51 return 1;
52 }
53
54 pthread_attr_t attr;
55 pthread_attr_init (attr: &attr);
56
57 int result = 0;
58 res = pthread_attr_setstack (attr: &attr, stackaddr: stack, stacksize: 4 * PTHREAD_STACK_MIN);
59 if (res)
60 {
61 printf (format: "pthread_attr_setstack failed %d\n", res);
62 result = 1;
63 }
64
65 for (int i = 0; i < 16; ++i)
66 {
67 /* Create the thread. */
68 pthread_t th;
69 res = pthread_create (newthread: &th, attr: &attr, start_routine: tf, NULL);
70 if (res)
71 {
72 printf (format: "pthread_create failed %d\n", res);
73 result = 1;
74 }
75 else
76 {
77 res = pthread_join (th: th, NULL);
78 if (res)
79 {
80 printf (format: "pthread_join failed %d\n", res);
81 result = 1;
82 }
83 }
84 }
85
86 pthread_attr_destroy (attr: &attr);
87
88 if (seen != 16)
89 {
90 printf (format: "seen %d != 16\n", seen);
91 result = 1;
92 }
93
94 free (ptr: stack);
95 return result;
96}
97
98#define TEST_FUNCTION do_test ()
99#include "../test-skeleton.c"
100

source code of glibc/nptl/tst-stack3.c