1/* Copyright (C) 2002-2020 Free Software Foundation, Inc.
2
3This file is part of GCC.
4
5GCC is free software; you can redistribute it and/or modify it under
6the terms of the GNU General Public License as published by the Free
7Software Foundation; either version 3, or (at your option) any later
8version.
9
10GCC is distributed in the hope that it will be useful, but WITHOUT ANY
11WARRANTY; without even the implied warranty of MERCHANTABILITY or
12FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
13for more details.
14
15Under Section 7 of GPL version 3, you are granted additional
16permissions described in the GCC Runtime Library Exception, version
173.1, as published by the Free Software Foundation.
18
19You should have received a copy of the GNU General Public License and
20a copy of the GCC Runtime Library Exception along with this program;
21see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
22<http://www.gnu.org/licenses/>.  */
23
24/* Threads compatibility routines for libgcc2 for VxWorks.
25
26   This file implements the GTHREAD_HAS_COND part of the interface
27   exposed by gthr-vxworks.h.  */
28
29#include "gthr.h"
30#include <taskLib.h>
31
32/* --------------------------- Condition Variables ------------------------ */
33
34void
35__gthread_cond_init (__gthread_cond_t *cond)
36{
37  if (!cond)
38    return;
39  *cond = semBCreate (SEM_Q_FIFO, SEM_EMPTY);
40}
41
42int
43__gthread_cond_destroy (__gthread_cond_t *cond)
44{
45  if (!cond)
46    return ERROR;
47  return __CHECK_RESULT (semDelete (*cond));
48}
49
50int
51__gthread_cond_broadcast (__gthread_cond_t *cond)
52{
53  if (!cond)
54    return ERROR;
55
56  return __CHECK_RESULT (semFlush (*cond));
57}
58
59int
60__gthread_cond_wait (__gthread_cond_t *cond,
61		     __gthread_mutex_t *mutex)
62{
63  if (!cond)
64    return ERROR;
65
66  if (!mutex)
67    return ERROR;
68
69  __RETURN_ERRNO_IF_NOT_OK (semGive (*mutex));
70
71  __RETURN_ERRNO_IF_NOT_OK (semTake (*cond, WAIT_FOREVER));
72
73  __RETURN_ERRNO_IF_NOT_OK (semTake (*mutex, WAIT_FOREVER));
74
75  return OK;
76}
77
78int
79__gthread_cond_wait_recursive (__gthread_cond_t *cond,
80			       __gthread_recursive_mutex_t *mutex)
81{
82  return __gthread_cond_wait (cond, mutex);
83}
84