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
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1999 by Sun Microsystems, Inc.
* All rights reserved.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <unistd.h>
#include <fcode/private.h>
/*
* 'user-abort' Fcode
*/
void
user_abort(fcode_env_t *env)
{
forth_abort(env, "user-abort called");
}
static fstack_t alarm_xt;
static fstack_t alarm_ms;
static fcode_env_t *alarm_env;
static void
catch_alarm(int signo)
{
fcode_env_t *env = alarm_env;
if (env && alarm_xt && alarm_ms) {
PUSH(DS, alarm_xt);
execute(env);
(void) signal(SIGALRM, catch_alarm);
(void) alarm((alarm_ms + 999)/1000);
}
}
/*
* 'alarm' Fcode
*/
void
do_alarm(fcode_env_t *env)
{
fstack_t ms, xt;
CHECK_DEPTH(env, 2, "alarm");
ms = POP(DS);
xt = POP(DS);
if (ms == 0) {
(void) alarm(0);
(void) signal(SIGALRM, SIG_DFL);
alarm_xt = 0;
alarm_ms = 0;
alarm_env = 0;
} else {
(void) signal(SIGALRM, catch_alarm);
alarm_xt = xt;
alarm_ms = ms;
alarm_env = env;
(void) alarm((ms + 999)/1000);
}
}
#pragma init(_init)
static void
_init(void)
{
fcode_env_t *env = initial_env;
ASSERT(env);
NOTICE;
P1275(0x213, 0, "alarm", do_alarm);
P1275(0x219, 0, "user-abort", user_abort);
}
|
