libuv-svace-build

1
/* Copyright libuv project contributors. All rights reserved.
2
*
3
* Permission is hereby granted, free of charge, to any person obtaining a copy
4
* of this software and associated documentation files (the "Software"), to
5
* deal in the Software without restriction, including without limitation the
6
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
7
* sell copies of the Software, and to permit persons to whom the Software is
8
* furnished to do so, subject to the following conditions:
9
*
10
* The above copyright notice and this permission notice shall be included in
11
* all copies or substantial portions of the Software.
12
*
13
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
18
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
19
* IN THE SOFTWARE.
20
*/
21

22

23
#include "uv.h"
24
#include "task.h"
25

26
#include <string.h>
27

28
#ifdef __APPLE__
29
# define NUM_ITERATIONS 5
30
#else
31
# define NUM_ITERATIONS 50
32
#endif
33

34
static const char* titles[] = {
35
  "8L2NY0Kdj0XyNFZnmUZigIOfcWjyNr0SkMmUhKw99VLUsZFrvCQQC3XIRfNR8pjyMjXObllled",
36
  "jUAcscJN49oLSN8GdmXj2Wo34XX2T2vp2j5khfajNQarlOulp57cE130yiY53ipJFnPyTn5i82",
37
  "9niCI5icXGFS72XudhXqo5alftmZ1tpE7B3cwUmrq0CCDjC84FzBNB8XAHqvpNQfI2QAQG6ztT",
38
  "n8qXVXuG6IEHDpabJgTEiwtpY6LHMZ8MgznnMpdHARu5EywufA6hcBaQfetb0YhEsK0ykDd7JU"
39
};
40

41
static void getter_thread_body(void* arg) {
42
  uv_sem_t* getter_sem;
43
  char buffer[512];
44
  size_t len;
45

46
  getter_sem = arg;
47

48
  while (UV_EAGAIN == uv_sem_trywait(getter_sem)) {
49
    ASSERT_OK(uv_get_process_title(buffer, sizeof(buffer)));
50

51
    /* The maximum size of the process title on some platforms depends on
52
     * the total size of the argv vector. It's therefore possible to read
53
     * back a title that's shorter than what we submitted.
54
     */
55
    len = strlen(buffer);
56
    ASSERT_GT(len, 0);
57

58
    ASSERT(
59
      0 == strncmp(buffer, titles[0], len) ||
60
      0 == strncmp(buffer, titles[1], len) ||
61
      0 == strncmp(buffer, titles[2], len) ||
62
      0 == strncmp(buffer, titles[3], len));
63

64
    uv_sleep(0);
65
  }
66
}
67

68

69
static void setter_thread_body(void* arg) {
70
  int i;
71

72
  for (i = 0; i < NUM_ITERATIONS; i++) {
73
    ASSERT_OK(uv_set_process_title(titles[0]));
74
    ASSERT_OK(uv_set_process_title(titles[1]));
75
    ASSERT_OK(uv_set_process_title(titles[2]));
76
    ASSERT_OK(uv_set_process_title(titles[3]));
77
  }
78
}
79

80

81
TEST_IMPL(process_title_threadsafe) {
82
  uv_thread_t setter_threads[4];
83
  uv_thread_t getter_thread;
84
  uv_sem_t getter_sem;
85
  int i;
86

87
#if defined(__sun) || defined(__CYGWIN__) || defined(__MSYS__) || \
88
    defined(__MVS__) || defined(__PASE__)
89
  RETURN_SKIP("uv_(get|set)_process_title is not implemented.");
90
#endif
91

92
  ASSERT_OK(uv_set_process_title(titles[0]));
93

94
  ASSERT_OK(uv_sem_init(&getter_sem, 0));
95
  ASSERT_OK(uv_thread_create(&getter_thread, getter_thread_body, &getter_sem));
96

97
  for (i = 0; i < (int) ARRAY_SIZE(setter_threads); i++)
98
    ASSERT_OK(uv_thread_create(&setter_threads[i], setter_thread_body, NULL));
99

100
  for (i = 0; i < (int) ARRAY_SIZE(setter_threads); i++)
101
    ASSERT_OK(uv_thread_join(&setter_threads[i]));
102

103
  uv_sem_post(&getter_sem);
104
  ASSERT_OK(uv_thread_join(&getter_thread));
105
  uv_sem_destroy(&getter_sem);
106

107
  return 0;
108
}
109