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
|
/*
* Copyright (c) 2008, 2009, Wayne Meissner
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * The name of the author or authors may not be used to endorse or promote
* products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/types.h>
#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include <errno.h>
#include <ruby.h>
#include "LastError.h"
#if defined(HAVE_NATIVETHREAD) && !defined(_WIN32) && !defined(__WIN32__)
# include <pthread.h>
# define USE_PTHREAD_LOCAL
#endif
typedef struct ThreadData {
int td_errno;
} ThreadData;
#if defined(USE_PTHREAD_LOCAL)
static pthread_key_t threadDataKey;
#endif
static inline ThreadData* thread_data_get(void);
#if defined(USE_PTHREAD_LOCAL)
static ThreadData*
thread_data_init(void)
{
ThreadData* td = xcalloc(1, sizeof(ThreadData));
pthread_setspecific(threadDataKey, td);
return td;
}
static inline ThreadData*
thread_data_get(void)
{
ThreadData* td = pthread_getspecific(threadDataKey);
return td != NULL ? td : thread_data_init();
}
static void
thread_data_free(void *ptr)
{
xfree(ptr);
}
#else
static ID id_thread_data;
static ThreadData*
thread_data_init(void)
{
ThreadData* td;
VALUE obj;
obj = Data_Make_Struct(rb_cObject, ThreadData, NULL, -1, td);
rb_thread_local_aset(rb_thread_current(), id_thread_data, obj);
return td;
}
static inline ThreadData*
thread_data_get()
{
VALUE obj = rb_thread_local_aref(rb_thread_current(), id_thread_data);
if (obj != Qnil && TYPE(obj) == T_DATA) {
return (ThreadData *) DATA_PTR(obj);
}
return thread_data_init();
}
#endif
static VALUE
get_last_error(VALUE self)
{
return INT2NUM(thread_data_get()->td_errno);
}
static VALUE
set_last_error(VALUE self, VALUE error)
{
#ifdef _WIN32
SetLastError(NUM2INT(error));
#else
errno = NUM2INT(error);
#endif
return Qnil;
}
void
rbffi_save_errno(void)
{
int error = 0;
#ifdef _WIN32
error = GetLastError();
#else
error = errno;
#endif
thread_data_get()->td_errno = error;
}
void
rbffi_LastError_Init(VALUE moduleFFI)
{
VALUE moduleError = rb_define_module_under(moduleFFI, "LastError");
rb_define_module_function(moduleError, "error", get_last_error, 0);
rb_define_module_function(moduleError, "error=", set_last_error, 1);
#if defined(USE_PTHREAD_LOCAL)
pthread_key_create(&threadDataKey, thread_data_free);
#else
id_thread_data = rb_intern("ffi_thread_local_data");
#endif /* USE_PTHREAD_LOCAL */
}
|
