sortix-mirror/libc/pthread/pthread_self.c

34 lines
1.2 KiB
C

/*
* Copyright (c) 2013 Jonas 'Sortie' Termansen.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* pthread/pthread_self.c
* Returns the identity of the current thread.
*/
#include <pthread.h>
pthread_t pthread_self(void)
{
pthread_t current_thread;
#if defined(__i386__)
asm ( "mov %%gs:0, %0" : "=r"(current_thread));
#elif defined(__x86_64__)
asm ( "mov %%fs:0, %0" : "=r"(current_thread));
#else
#error "You need to implement pthread_self for your platform"
#endif
return current_thread;
}