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
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
/***********************************************************
Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum,
Amsterdam, The Netherlands.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the names of Stichting Mathematisch
Centrum or CWI not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior permission.
STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
******************************************************************/
/* Check for interrupts */
#ifdef THINK_C
#include <MacHeaders>
#define macintosh
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "myproto.h"
#include "intrcheck.h"
#ifdef QUICKWIN
#include <io.h>
void
initintr()
{
}
int
intrcheck()
{
_wyield();
}
#define OK
#endif /* QUICKWIN */
#ifdef _M_IX86
#include <io.h>
#endif
#if defined(MSDOS) && !defined(QUICKWIN)
#ifdef __GNUC__
/* This is for DJGPP's GO32 extender. I don't know how to trap
* control-C (There's no API for ctrl-C, and I don't want to mess with
* the interrupt vectors.) However, this DOES catch control-break.
* --Amrit
*/
#include <go32.h>
void
initintr()
{
_go32_want_ctrl_break(1 /* TRUE */);
}
int
intrcheck()
{
return _go32_was_ctrl_break_hit();
}
#else /* !__GNUC__ */
/* This might work for MS-DOS (untested though): */
void
initintr()
{
}
int
intrcheck()
{
int interrupted = 0;
while (kbhit()) {
if (getch() == '\003')
interrupted = 1;
}
return interrupted;
}
#endif /* __GNUC__ */
#define OK
#endif /* MSDOS && !QUICKWIN */
#ifdef macintosh
#ifdef applec /* MPW */
#include <OSEvents.h>
#include <SysEqu.h>
#endif /* applec */
#include <signal.h>
static int interrupted;
static RETSIGTYPE intcatcher PROTO((int));
static RETSIGTYPE
intcatcher(sig)
int sig;
{
interrupted = 1;
signal(SIGINT, intcatcher);
}
void
initintr()
{
if (signal(SIGINT, SIG_IGN) != SIG_IGN)
signal(SIGINT, intcatcher);
}
int
intrcheck()
{
register EvQElPtr q;
q = (EvQElPtr) GetEvQHdr()->qHead;
for (; q; q = (EvQElPtr)q->qLink) {
if (q->evtQWhat == keyDown &&
(char)q->evtQMessage == '.' &&
(q->evtQModifiers & cmdKey) != 0) {
FlushEvents(keyDownMask, 0);
interrupted = 1;
break;
}
}
if (interrupted) {
interrupted = 0;
return 1;
}
return 0;
}
#define OK
#endif /* macintosh */
#ifndef OK
/* Default version -- for real operating systems and for Standard C */
#include <stdio.h>
#include <string.h>
#include <signal.h>
int interrupted;
/* ARGSUSED */
static RETSIGTYPE
#ifdef _M_IX86
intcatcher(int sig) /* So the C compiler shuts up */
#else /* _M_IX86 */
intcatcher(sig)
int sig; /* Not used by required by interface */
#endif /* _M_IX86 */
{
extern void goaway PROTO((int));
static char message[] =
"python: to interrupt a truly hanging Python program, interrupt once more.\n";
switch (interrupted++) {
case 0:
break;
case 1:
write(2, message, strlen(message));
break;
case 2:
interrupted = 0;
goaway(1);
break;
}
signal(SIGINT, intcatcher);
}
void
initintr()
{
if (signal(SIGINT, SIG_IGN) != SIG_IGN)
signal(SIGINT, intcatcher);
#ifdef HAVE_SIGINTERRUPT
/* This is for SunOS and other modern BSD derivatives.
It means that system calls (like read()) are not restarted
after an interrupt. This is necessary so interrupting a
read() or readline() call works as expected.
XXX On old BSD (pure 4.2 or older) you may have to do this
differently! */
siginterrupt(SIGINT, 1);
#endif /* HAVE_SIGINTERRUPT */
}
int
intrcheck()
{
if (!interrupted)
return 0;
interrupted = 0;
return 1;
}
#endif /* !OK */
|
