This source file includes following definitions.
- pthread_sigmask
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17 #include <config.h>
18
19
20 #include <signal.h>
21
22 #include <errno.h>
23 #include <stddef.h>
24
25 #if PTHREAD_SIGMASK_INEFFECTIVE
26 # include <string.h>
27 #endif
28
29 #if PTHREAD_SIGMASK_UNBLOCK_BUG
30 # include <unistd.h>
31 #endif
32
33 int
34 pthread_sigmask (int how, const sigset_t *new_mask, sigset_t *old_mask)
35 #undef pthread_sigmask
36 {
37 #if HAVE_PTHREAD_SIGMASK
38 int ret;
39
40 # if PTHREAD_SIGMASK_INEFFECTIVE
41 sigset_t omask, omask_copy;
42 sigset_t *old_mask_ptr = &omask;
43 sigemptyset (&omask);
44
45
46 sigaddset (&omask, SIGILL);
47 memcpy (&omask_copy, &omask, sizeof omask);
48 # else
49 sigset_t *old_mask_ptr = old_mask;
50 # endif
51
52 ret = pthread_sigmask (how, new_mask, old_mask_ptr);
53
54 # if PTHREAD_SIGMASK_INEFFECTIVE
55 if (ret == 0)
56 {
57
58
59
60
61 if (memcmp (&omask_copy, &omask, sizeof omask) == 0
62 && pthread_sigmask (1729, &omask_copy, NULL) == 0)
63 {
64
65
66 return (sigprocmask (how, new_mask, old_mask) < 0 ? errno : 0);
67 }
68
69 if (old_mask)
70 memcpy (old_mask, &omask, sizeof omask);
71 }
72 # endif
73 # if PTHREAD_SIGMASK_FAILS_WITH_ERRNO
74 if (ret == -1)
75 return errno;
76 # endif
77 # if PTHREAD_SIGMASK_UNBLOCK_BUG
78 if (ret == 0
79 && new_mask != NULL
80 && (how == SIG_UNBLOCK || how == SIG_SETMASK))
81 {
82
83
84 usleep (1);
85 }
86 # endif
87 return ret;
88 #else
89 int ret = sigprocmask (how, new_mask, old_mask);
90 return (ret < 0 ? errno : 0);
91 #endif
92 }