blob: 028d387b13c4a7f02e07e0f622611e32490dc87e (
plain) (
blame)
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
38
39
40
41
42
43
44
|
#include "pthread_impl.h"
static struct pthread main_thread;
/* pthread_key_create.c overrides this */
static const size_t dummy = 0;
weak_alias(dummy, __pthread_tsd_size);
#undef errno
static int *errno_location()
{
return __pthread_self()->errno_ptr;
}
static int init_main_thread()
{
void *tsd = 0;
if (__pthread_tsd_size) {
tsd = mmap(0, __pthread_tsd_size, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
if (tsd == MAP_FAILED) return -1;
}
main_thread.tsd = tsd;
main_thread.self = &main_thread;
if (__set_thread_area(&main_thread) < 0)
return -1;
syscall1(__NR_set_tid_address, (long)&main_thread.tid);
main_thread.errno_ptr = __errno_location();
libc.errno_location = errno_location;
main_thread.tid = main_thread.pid = getpid();
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();
}
|
