mirror of
https://github.com/fluencelabs/musl
synced 2025-06-20 18:26:52 +00:00
40 lines
850 B
C
40 lines
850 B
C
|
#include "pthread_impl.h"
|
||
|
|
|
||
|
|
static struct pthread main_thread;
|
||
|
|
|
||
|
|
#undef errno
|
||
|
|
static int *errno_location()
|
||
|
|
{
|
||
|
|
return pthread_self()->errno_ptr;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int init_main_thread()
|
||
|
|
{
|
||
|
|
main_thread.tlsdesc[0] = -1;
|
||
|
|
main_thread.tlsdesc[1] = (long)&main_thread;
|
||
|
|
main_thread.tlsdesc[2] = SIZE_MAX/PAGE_SIZE;
|
||
|
|
main_thread.tlsdesc[3] = 0x51;
|
||
|
|
main_thread.self = &main_thread;
|
||
|
|
main_thread.errno_ptr = __errno_location();
|
||
|
|
if (__set_thread_area(main_thread.tlsdesc) < 0)
|
||
|
|
return -1;
|
||
|
|
syscall1(__NR_set_tid_address, (long)&main_thread.tid);
|
||
|
|
libc.errno_location = errno_location;
|
||
|
|
main_thread.tid = main_thread.pid = getpid();
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
#undef pthread_self
|
||
|
|
|
||
|
|
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();
|
||
|
|
}
|