1062c5bc4SJason Schmidlapp /*
2062c5bc4SJason Schmidlapp * pthread_self.c
3062c5bc4SJason Schmidlapp *
4062c5bc4SJason Schmidlapp * Description:
5062c5bc4SJason Schmidlapp * This translation unit implements miscellaneous thread functions.
6062c5bc4SJason Schmidlapp *
7062c5bc4SJason Schmidlapp * --------------------------------------------------------------------------
8062c5bc4SJason Schmidlapp *
9062c5bc4SJason Schmidlapp * Pthreads-embedded (PTE) - POSIX Threads Library for embedded systems
10062c5bc4SJason Schmidlapp * Copyright(C) 2008 Jason Schmidlapp
11062c5bc4SJason Schmidlapp *
12062c5bc4SJason Schmidlapp * Contact Email: jschmidlapp@users.sourceforge.net
13062c5bc4SJason Schmidlapp *
14062c5bc4SJason Schmidlapp *
15062c5bc4SJason Schmidlapp * Based upon Pthreads-win32 - POSIX Threads Library for Win32
16062c5bc4SJason Schmidlapp * Copyright(C) 1998 John E. Bossom
17062c5bc4SJason Schmidlapp * Copyright(C) 1999,2005 Pthreads-win32 contributors
18062c5bc4SJason Schmidlapp *
19062c5bc4SJason Schmidlapp * Contact Email: rpj@callisto.canberra.edu.au
20062c5bc4SJason Schmidlapp *
21062c5bc4SJason Schmidlapp * The original list of contributors to the Pthreads-win32 project
22062c5bc4SJason Schmidlapp * is contained in the file CONTRIBUTORS.ptw32 included with the
23062c5bc4SJason Schmidlapp * source code distribution. The list can also be seen at the
24062c5bc4SJason Schmidlapp * following World Wide Web location:
25062c5bc4SJason Schmidlapp * http://sources.redhat.com/pthreads-win32/contributors.html
26062c5bc4SJason Schmidlapp *
27062c5bc4SJason Schmidlapp * This library is free software; you can redistribute it and/or
28062c5bc4SJason Schmidlapp * modify it under the terms of the GNU Lesser General Public
29062c5bc4SJason Schmidlapp * License as published by the Free Software Foundation; either
30062c5bc4SJason Schmidlapp * version 2 of the License, or (at your option) any later version.
31062c5bc4SJason Schmidlapp *
32062c5bc4SJason Schmidlapp * This library is distributed in the hope that it will be useful,
33062c5bc4SJason Schmidlapp * but WITHOUT ANY WARRANTY; without even the implied warranty of
34062c5bc4SJason Schmidlapp * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
35062c5bc4SJason Schmidlapp * Lesser General Public License for more details.
36062c5bc4SJason Schmidlapp *
37062c5bc4SJason Schmidlapp * You should have received a copy of the GNU Lesser General Public
38062c5bc4SJason Schmidlapp * License along with this library in the file COPYING.LIB;
39062c5bc4SJason Schmidlapp * if not, write to the Free Software Foundation, Inc.,
40062c5bc4SJason Schmidlapp * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
41062c5bc4SJason Schmidlapp */
42062c5bc4SJason Schmidlapp
43062c5bc4SJason Schmidlapp #include <stdio.h>
44062c5bc4SJason Schmidlapp #include <stdlib.h>
45062c5bc4SJason Schmidlapp
46062c5bc4SJason Schmidlapp #include "pthread.h"
47062c5bc4SJason Schmidlapp #include "implement.h"
48062c5bc4SJason Schmidlapp
49062c5bc4SJason Schmidlapp pthread_t
pthread_self(void)50062c5bc4SJason Schmidlapp pthread_self (void)
51062c5bc4SJason Schmidlapp /*
52062c5bc4SJason Schmidlapp * ------------------------------------------------------
53062c5bc4SJason Schmidlapp * DOCPUBLIC
54062c5bc4SJason Schmidlapp * This function returns a reference to the current running
55062c5bc4SJason Schmidlapp * thread.
56062c5bc4SJason Schmidlapp *
57062c5bc4SJason Schmidlapp * PARAMETERS
58062c5bc4SJason Schmidlapp * N/A
59062c5bc4SJason Schmidlapp *
60062c5bc4SJason Schmidlapp *
61062c5bc4SJason Schmidlapp * DESCRIPTION
62062c5bc4SJason Schmidlapp * This function returns a reference to the current running
63062c5bc4SJason Schmidlapp * thread.
64062c5bc4SJason Schmidlapp *
65062c5bc4SJason Schmidlapp * RESULTS
66062c5bc4SJason Schmidlapp * pthread_t reference to the current thread
67062c5bc4SJason Schmidlapp *
68062c5bc4SJason Schmidlapp * ------------------------------------------------------
69062c5bc4SJason Schmidlapp */
70062c5bc4SJason Schmidlapp {
71062c5bc4SJason Schmidlapp pthread_t self;
72062c5bc4SJason Schmidlapp pte_thread_t * sp;
73062c5bc4SJason Schmidlapp
74062c5bc4SJason Schmidlapp sp = (pte_thread_t *) pthread_getspecific (pte_selfThreadKey);
75062c5bc4SJason Schmidlapp
76062c5bc4SJason Schmidlapp if (sp != NULL)
77062c5bc4SJason Schmidlapp {
78062c5bc4SJason Schmidlapp self = sp->ptHandle;
79062c5bc4SJason Schmidlapp }
80062c5bc4SJason Schmidlapp else
81062c5bc4SJason Schmidlapp {
82062c5bc4SJason Schmidlapp /*
83062c5bc4SJason Schmidlapp * Need to create an implicit 'self' for the currently
84062c5bc4SJason Schmidlapp * executing thread.
85062c5bc4SJason Schmidlapp *
86062c5bc4SJason Schmidlapp * Note that this is a potential memory leak as there is
87062c5bc4SJason Schmidlapp * no way to free the memory and any resources allocated
88062c5bc4SJason Schmidlapp * by pte_new!
89062c5bc4SJason Schmidlapp */
90062c5bc4SJason Schmidlapp self = pte_new ();
91*a12978ccSJeremy Soller sp = (pte_thread_t *) self;
92062c5bc4SJason Schmidlapp
93062c5bc4SJason Schmidlapp if (sp != NULL)
94062c5bc4SJason Schmidlapp {
95062c5bc4SJason Schmidlapp /*
96062c5bc4SJason Schmidlapp * This is a non-POSIX thread which has chosen to call
97062c5bc4SJason Schmidlapp * a POSIX threads function for some reason. We assume that
98062c5bc4SJason Schmidlapp * it isn't joinable, but we do assume that it's
99062c5bc4SJason Schmidlapp * (deferred) cancelable.
100062c5bc4SJason Schmidlapp */
101062c5bc4SJason Schmidlapp sp->implicit = 1;
102062c5bc4SJason Schmidlapp sp->detachState = PTHREAD_CREATE_DETACHED;
103062c5bc4SJason Schmidlapp
104062c5bc4SJason Schmidlapp sp->threadId = pte_osThreadGetHandle();
105062c5bc4SJason Schmidlapp /*
106062c5bc4SJason Schmidlapp * No need to explicitly serialise access to sched_priority
107062c5bc4SJason Schmidlapp * because the new handle is not yet public.
108062c5bc4SJason Schmidlapp */
109062c5bc4SJason Schmidlapp sp->sched_priority = 0;
110062c5bc4SJason Schmidlapp
111062c5bc4SJason Schmidlapp pthread_setspecific (pte_selfThreadKey, (void *) sp);
112062c5bc4SJason Schmidlapp }
113062c5bc4SJason Schmidlapp }
114062c5bc4SJason Schmidlapp
115062c5bc4SJason Schmidlapp return (self);
116062c5bc4SJason Schmidlapp
117062c5bc4SJason Schmidlapp } /* pthread_self */
118