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
|
/*
* Copyright (C) 2002 Red Hat, Inc.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <sys/types.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <signal.h>
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
#ifndef NULL
#define NULL ((void*) 0)
#endif
#ifdef HAVE_BACKTRACE
#include <execinfo.h>
static void
print_backtrace (void)
{
void *bt[500];
int bt_size;
int i;
char **syms;
bt_size = backtrace (bt, 500);
syms = backtrace_symbols (bt, bt_size);
i = 0;
while (i < bt_size)
{
fprintf (stderr, " %s\n", syms[i]);
++i;
}
free (syms);
}
#else
static void
print_backtrace (void)
{
fprintf (stderr, "Not compiled with backtrace support\n");
}
#endif
static int error_trap_depth = 0;
static int
x_error_handler (Display *xdisplay,
XErrorEvent *error)
{
char buf[64];
XGetErrorText (xdisplay, error->error_code, buf, 63);
if (error_trap_depth == 0)
{
print_backtrace ();
fprintf (stderr, "Unexpected X error: %s serial %ld error_code %d request_code %d minor_code %d)\n",
buf,
error->serial,
error->error_code,
error->request_code,
error->minor_code);
exit (1);
}
return 1; /* return value is meaningless */
}
static void
error_trap_push (LfDisplay *display,
Display *xdisplay)
{
++error_trap_depth;
}
static void
error_trap_pop (LfDisplay *display,
Display *xdisplay)
{
if (error_trap_depth == 0)
{
fprintf (stderr, "Error trap underflow!\n");
exit (1);
}
XSync (xdisplay, False); /* get all errors out of the queue */
--error_trap_depth;
}
|
