1 | /* Helper program for testing the pthread_mutex_t and pthread_mutexattr_t |
2 | pretty printers. |
3 | |
4 | Copyright (C) 2016-2022 Free Software Foundation, Inc. |
5 | This file is part of the GNU C Library. |
6 | |
7 | The GNU C Library is free software; you can redistribute it and/or |
8 | modify it under the terms of the GNU Lesser General Public |
9 | License as published by the Free Software Foundation; either |
10 | version 2.1 of the License, or (at your option) any later version. |
11 | |
12 | The GNU C Library is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
15 | Lesser General Public License for more details. |
16 | |
17 | You should have received a copy of the GNU Lesser General Public |
18 | License along with the GNU C Library; if not, see |
19 | <https://www.gnu.org/licenses/>. */ |
20 | |
21 | /* Keep the calls to the pthread_* functions on separate lines to make it easy |
22 | to advance through the program using the gdb 'next' command. */ |
23 | |
24 | #include <pthread.h> |
25 | |
26 | #define PASS 0 |
27 | #define FAIL 1 |
28 | #define PRIOCEILING 42 |
29 | |
30 | /* Need these so we don't have lines longer than 79 chars. */ |
31 | #define SET_TYPE(attr, type) pthread_mutexattr_settype (attr, type) |
32 | #define SET_ROBUST(attr, robust) pthread_mutexattr_setrobust (attr, robust) |
33 | #define SET_SHARED(attr, shared) pthread_mutexattr_setpshared (attr, shared) |
34 | #define SET_PROTOCOL(attr, protocol) \ |
35 | pthread_mutexattr_setprotocol (attr, protocol) |
36 | #define SET_PRIOCEILING(mutex, prioceiling, old_ceiling) \ |
37 | pthread_mutex_setprioceiling (mutex, prioceiling, old_ceiling) |
38 | |
39 | static int mutex_reinit (pthread_mutex_t *mutex, |
40 | const pthread_mutexattr_t *attr); |
41 | static int test_settype (pthread_mutex_t *mutex, pthread_mutexattr_t *attr); |
42 | static int test_setrobust (pthread_mutex_t *mutex, pthread_mutexattr_t *attr); |
43 | static int test_setpshared (pthread_mutex_t *mutex, pthread_mutexattr_t *attr); |
44 | static int test_setprotocol (pthread_mutex_t *mutex, |
45 | pthread_mutexattr_t *attr); |
46 | |
47 | int |
48 | main (void) |
49 | { |
50 | pthread_mutex_t mutex; |
51 | pthread_mutexattr_t attr; |
52 | int result = FAIL; |
53 | |
54 | if (pthread_mutexattr_init (attr: &attr) == 0 |
55 | && pthread_mutex_init (mutex: &mutex, NULL) == 0 |
56 | && test_settype (mutex: &mutex, attr: &attr) == PASS |
57 | && test_setrobust (mutex: &mutex, attr: &attr) == PASS |
58 | && test_setpshared (mutex: &mutex, attr: &attr) == PASS |
59 | && test_setprotocol (mutex: &mutex, attr: &attr) == PASS) |
60 | result = PASS; |
61 | /* Else, one of the pthread_mutex* functions failed. */ |
62 | |
63 | return result; |
64 | } |
65 | |
66 | /* Destroys MUTEX and re-initializes it using ATTR. */ |
67 | static int |
68 | mutex_reinit (pthread_mutex_t *mutex, const pthread_mutexattr_t *attr) |
69 | { |
70 | int result = FAIL; |
71 | |
72 | if (pthread_mutex_destroy (mutex: mutex) == 0 |
73 | && pthread_mutex_init (mutex: mutex, mutexattr: attr) == 0) |
74 | result = PASS; |
75 | |
76 | return result; |
77 | } |
78 | |
79 | /* Tests setting the mutex type. */ |
80 | static int |
81 | test_settype (pthread_mutex_t *mutex, pthread_mutexattr_t *attr) |
82 | { |
83 | int result = FAIL; |
84 | |
85 | if (SET_TYPE (attr, PTHREAD_MUTEX_ERRORCHECK) == 0 /* Set type. */ |
86 | && mutex_reinit (mutex, attr) == 0 |
87 | && SET_TYPE (attr, PTHREAD_MUTEX_RECURSIVE) == 0 |
88 | && mutex_reinit (mutex, attr) == 0 |
89 | && SET_TYPE (attr, PTHREAD_MUTEX_NORMAL) == 0 |
90 | && mutex_reinit (mutex, attr) == 0) |
91 | result = PASS; |
92 | |
93 | return result; |
94 | } |
95 | |
96 | /* Tests setting whether the mutex is robust. */ |
97 | static int |
98 | test_setrobust (pthread_mutex_t *mutex, pthread_mutexattr_t *attr) |
99 | { |
100 | int result = FAIL; |
101 | |
102 | if (SET_ROBUST (attr, PTHREAD_MUTEX_ROBUST) == 0 /* Set robust. */ |
103 | && mutex_reinit (mutex, attr) == 0 |
104 | && SET_ROBUST (attr, PTHREAD_MUTEX_STALLED) == 0 |
105 | && mutex_reinit (mutex, attr) == 0) |
106 | result = PASS; |
107 | |
108 | return result; |
109 | } |
110 | |
111 | /* Tests setting whether the mutex can be shared between processes. */ |
112 | static int |
113 | test_setpshared (pthread_mutex_t *mutex, pthread_mutexattr_t *attr) |
114 | { |
115 | int result = FAIL; |
116 | |
117 | if (SET_SHARED (attr, PTHREAD_PROCESS_SHARED) == 0 /* Set shared. */ |
118 | && mutex_reinit (mutex, attr) == 0 |
119 | && SET_SHARED (attr, PTHREAD_PROCESS_PRIVATE) == 0 |
120 | && mutex_reinit (mutex, attr) == 0) |
121 | result = PASS; |
122 | |
123 | return result; |
124 | } |
125 | |
126 | /* Tests setting the mutex protocol and, for Priority Protect, the Priority |
127 | Ceiling. */ |
128 | static int |
129 | test_setprotocol (pthread_mutex_t *mutex, pthread_mutexattr_t *attr) |
130 | { |
131 | int result = FAIL; |
132 | int old_prioceiling; |
133 | |
134 | if (SET_PROTOCOL (attr, PTHREAD_PRIO_INHERIT) == 0 /* Set protocol. */ |
135 | && mutex_reinit (mutex, attr) == 0 |
136 | && SET_PROTOCOL (attr, PTHREAD_PRIO_PROTECT) == 0 |
137 | && mutex_reinit (mutex, attr) == 0 |
138 | && SET_PRIOCEILING(mutex, PRIOCEILING, &old_prioceiling) == 0 |
139 | && SET_PROTOCOL (attr, PTHREAD_PRIO_NONE) == 0 |
140 | && mutex_reinit (mutex, attr) == 0) |
141 | result = PASS; |
142 | |
143 | return result; |
144 | } |
145 | |