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
172
173
174
175
176
177
178
|
/* ath-pth.c - Pth module for self-adapting thread-safeness library
Copyright (C) 2002, 2003, 2004 g10 Code GmbH
This file is part of GPGME.
GPGME is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of
the License, or (at your option) any later version.
GPGME 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA. */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <errno.h>
#include <pth.h>
#include "ath.h"
/* The lock we take while checking for lazy lock initialization. */
static pth_mutex_t check_init_lock = PTH_MUTEX_INIT;
/* Initialize the mutex *PRIV. If JUST_CHECK is true, only do this if
it is not already initialized. */
static int
mutex_pth_init (ath_mutex_t *priv, int just_check)
{
int err = 0;
if (just_check)
pth_mutex_acquire (&check_init_lock, 0, NULL);
if (!*priv || !just_check)
{
pth_mutex_t *lock = malloc (sizeof (pth_mutex_t));
if (!lock)
err = ENOMEM;
if (!err)
{
err = pth_mutex_init (lock);
if (err == FALSE)
err = errno;
else
err = 0;
if (err)
free (lock);
else
*priv = (ath_mutex_t) lock;
}
}
if (just_check)
pth_mutex_release (&check_init_lock);
return err;
}
void
ath_init (void)
{
/* Nothing to do. */
}
int
ath_mutex_init (ath_mutex_t *lock)
{
return mutex_pth_init (lock, 0);
}
int
ath_mutex_destroy (ath_mutex_t *lock)
{
int err = mutex_pth_init (lock, 1);
if (!err)
{
/* GNU Pth has no destructor function. */
free (*lock);
}
return err;
}
int
ath_mutex_lock (ath_mutex_t *lock)
{
int ret = mutex_pth_init (lock, 1);
if (ret)
return ret;
ret = pth_mutex_acquire ((pth_mutex_t *) *lock, 0, NULL);
return ret == FALSE ? errno : 0;
}
int
ath_mutex_unlock (ath_mutex_t *lock)
{
int ret = mutex_pth_init (lock, 1);
if (ret)
return ret;
ret = pth_mutex_release ((pth_mutex_t *) *lock);
return ret == FALSE ? errno : 0;
}
ssize_t
ath_read (int fd, void *buf, size_t nbytes)
{
return pth_read (fd, buf, nbytes);
}
ssize_t
ath_write (int fd, const void *buf, size_t nbytes)
{
return pth_write (fd, buf, nbytes);
}
ssize_t
ath_select (int nfd, fd_set *rset, fd_set *wset, fd_set *eset,
struct timeval *timeout)
{
return pth_select (nfd, rset, wset, eset, timeout);
}
ssize_t
ath_waitpid (pid_t pid, int *status, int options)
{
return pth_waitpid (pid, status, options);
}
int
ath_accept (int s, struct sockaddr *addr, socklen_t *length_ptr)
{
return pth_accept (s, addr, length_ptr);
}
int
ath_connect (int s, const struct sockaddr *addr, socklen_t length)
{
return pth_connect (s, addr, length);
}
int
ath_sendmsg (int s, const struct msghdr *msg, int flags)
{
/* FIXME: GNU Pth is missing pth_sendmsg. */
return sendmsg (s, msg, flags);
}
int
ath_recvmsg (int s, struct msghdr *msg, int flags)
{
/* FIXME: GNU Pth is missing pth_recvmsg. */
return recvmsg (s, msg, flags);
}
|
