1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
#ifndef CYGONCE_POSIX_MUTEX_H
#define CYGONCE_POSIX_MUTEX_H
//=============================================================================
//
// mutex.h
//
// POSIX mutex and condition variable function definitions
//
//=============================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later
// version.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License
// along with eCos; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// As a special exception, if other files instantiate templates or use
// macros or inline functions from this file, or you compile this file
// and link it with other works to produce a work based on this file,
// this file does not by itself cause the resulting work to be covered by
// the GNU General Public License. However the source code for this file
// must still be made available in accordance with section (3) of the GNU
// General Public License v2.
//
// This exception does not invalidate any other reasons why a work based
// on this file might be covered by the GNU General Public License.
// -------------------------------------------
// ####ECOSGPLCOPYRIGHTEND####
//=============================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): nickg,jlarmour
// Contributors:
// Date: 2001-09-10
// Purpose: POSIX mutex and condition variable function definitions
// Description: This header contains POSIX API definitions for mutexes
// and cond vars.
//
// Usage: #include <pthread.h>
//
//
//####DESCRIPTIONEND####
//
//=============================================================================
#include <pkgconf/posix.h>
#include <sys/types.h> // pthread_* types
#include <time.h>
//=============================================================================
// Mutexes
//-----------------------------------------------------------------------------
// Mutex attributes manipulation functions
// Initialize attribute object
externC int pthread_mutexattr_init ( pthread_mutexattr_t *attr);
// Destroy attribute object
externC int pthread_mutexattr_destroy ( pthread_mutexattr_t *attr);
#if defined(_POSIX_THREAD_PRIO_INHERIT) || defined(_POSIX_THREAD_PRIO_PROTECT)
// Set priority inversion protection protocol
externC int pthread_mutexattr_setprotocol ( pthread_mutexattr_t *attr,
int protocol);
// Get priority inversion protection protocol
externC int pthread_mutexattr_getprotocol ( pthread_mutexattr_t *attr,
int *protocol);
#if defined(_POSIX_THREAD_PRIO_PROTECT)
// Set priority for priority ceiling protocol
externC int pthread_mutexattr_setprioceiling ( pthread_mutexattr_t *attr,
int prioceiling);
// Get priority for priority ceiling protocol
externC int pthread_mutexattr_getprioceiling ( pthread_mutexattr_t *attr,
int *prioceiling);
// Set priority ceiling of given thread, returning old ceiling.
externC int pthread_mutex_setprioceiling( pthread_mutex_t *mutex,
int prioceiling,
int *old_ceiling);
// Get priority ceiling of given thread
externC int pthread_mutex_getprioceiling( pthread_mutex_t *mutex,
int *prioceiling);
#endif
#endif
//-----------------------------------------------------------------------------
// Mutex functions
// Initialize mutex. If mutex_attr is NULL, use default attributes.
externC int pthread_mutex_init (pthread_mutex_t *mutex,
const pthread_mutexattr_t *mutex_attr);
// Destroy mutex.
externC int pthread_mutex_destroy (pthread_mutex_t *mutex);
// Lock mutex, waiting for it if necessary.
externC int pthread_mutex_lock (pthread_mutex_t *mutex);
// Try to lock mutex.
externC int pthread_mutex_trylock (pthread_mutex_t *mutex);
// Unlock mutex.
externC int pthread_mutex_unlock (pthread_mutex_t *mutex);
//=============================================================================
// Condition Variables
//-----------------------------------------------------------------------------
// Attribute manipulation functions
// We do not actually support any attributes at present, so these do nothing.
// Initialize condition variable attributes
externC int pthread_condattr_init (pthread_condattr_t *attr);
// Destroy condition variable attributes
externC int pthread_condattr_destroy (pthread_condattr_t *attr);
//-----------------------------------------------------------------------------
// Condition variable functions
// Initialize condition variable.
externC int pthread_cond_init (pthread_cond_t *cond,
const pthread_condattr_t *attr);
// Destroy condition variable.
externC int pthread_cond_destroy (pthread_cond_t *cond);
// Wake up one thread waiting for condition variable
externC int pthread_cond_signal (pthread_cond_t *cond);
// Wake up all threads waiting for condition variable
externC int pthread_cond_broadcast (pthread_cond_t *cond);
// Block on condition variable until signalled. The mutex is
// assumed to be locked before this call, will be unlocked
// during the wait, and will be re-locked on wakeup.
externC int pthread_cond_wait (pthread_cond_t *cond,
pthread_mutex_t *mutex);
// Block on condition variable until signalled, or the timeout expires.
externC int pthread_cond_timedwait (pthread_cond_t *cond,
pthread_mutex_t *mutex,
const struct timespec *abstime);
//-----------------------------------------------------------------------------
#endif // ifndef CYGONCE_POSIX_MUTEX_H
// End of mutex.h
|
