1 /*
2 * ptw32_new.c
3 *
4 * Description:
5 * This translation unit implements miscellaneous thread functions.
6 *
7 * --------------------------------------------------------------------------
8 *
9 * Pthreads-win32 - POSIX Threads Library for Win32
10 * Copyright(C) 1998 John E. Bossom
11 * Copyright(C) 1999,2005 Pthreads-win32 contributors
12 *
13 * Contact Email: rpj@callisto.canberra.edu.au
14 *
15 * The current list of contributors is contained
16 * in the file CONTRIBUTORS included with the source
17 * code distribution. The list can also be seen at the
18 * following World Wide Web location:
19 * http://sources.redhat.com/pthreads-win32/contributors.html
20 *
21 * This library is free software; you can redistribute it and/or
22 * modify it under the terms of the GNU Lesser General Public
23 * License as published by the Free Software Foundation; either
24 * version 2 of the License, or (at your option) any later version.
25 *
26 * This library is distributed in the hope that it will be useful,
27 * but WITHOUT ANY WARRANTY; without even the implied warranty of
28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
29 * Lesser General Public License for more details.
30 *
31 * You should have received a copy of the GNU Lesser General Public
32 * License along with this library in the file COPYING.LIB;
33 * if not, write to the Free Software Foundation, Inc.,
34 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
35 */
36
37 #include "pthread.h"
38 #include "implement.h"
39
40
41 pthread_t
ptw32_new(void)42 ptw32_new (void)
43 {
44 pthread_t t;
45 pthread_t nil = {NULL, 0};
46 ptw32_thread_t * tp;
47
48 /*
49 * If there's a reusable pthread_t then use it.
50 */
51 t = ptw32_threadReusePop ();
52
53 if (NULL != t.p)
54 {
55 tp = (ptw32_thread_t *) t.p;
56 }
57 else
58 {
59 /* No reuse threads available */
60 tp = (ptw32_thread_t *) calloc (1, sizeof(ptw32_thread_t));
61
62 if (tp == NULL)
63 {
64 return nil;
65 }
66
67 /* ptHandle.p needs to point to it's parent ptw32_thread_t. */
68 t.p = tp->ptHandle.p = tp;
69 t.x = tp->ptHandle.x = 0;
70 }
71
72 /* Set default state. */
73 tp->seqNumber = ++ptw32_threadSeqNumber;
74 tp->sched_priority = THREAD_PRIORITY_NORMAL;
75 tp->detachState = PTHREAD_CREATE_JOINABLE;
76 tp->cancelState = PTHREAD_CANCEL_ENABLE;
77 tp->cancelType = PTHREAD_CANCEL_DEFERRED;
78 tp->stateLock = 0;
79 tp->threadLock = 0;
80 tp->robustMxListLock = 0;
81 tp->robustMxList = NULL;
82 tp->cancelEvent = CreateEvent (0, (int) PTW32_TRUE, /* manualReset */
83 (int) PTW32_FALSE, /* setSignaled */
84 NULL);
85
86 if (tp->cancelEvent == NULL)
87 {
88 ptw32_threadReusePush (tp->ptHandle);
89 return nil;
90 }
91
92 return t;
93
94 }
95