1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
| | #include "pthread_impl.h"
static struct pthread main_thread;
/* pthread_key_create.c overrides this */
const void *dummy[1] = { 0 };
weak_alias(dummy, __pthread_tsd_main);
static int *errno_location()
{
return __pthread_self()->errno_ptr;
}
static int init_main_thread()
{
if (__set_thread_area(&main_thread) < 0) return -1;
main_thread.canceldisable = libc.canceldisable;
main_thread.tsd = (void **)__pthread_tsd_main;
main_thread.self = libc.main_thread = &main_thread;
main_thread.errno_ptr = __errno_location();
libc.errno_location = errno_location;
main_thread.tid = main_thread.pid =
__syscall(SYS_set_tid_address, &main_thread.tid);
return 0;
}
pthread_t pthread_self()
{
static int init, failed;
if (!init) {
if (failed) return 0;
if (init_main_thread() < 0) failed = 1;
if (failed) return 0;
init = 1;
}
return __pthread_self();
}
|