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
|
/* $NetBSD: rf_debugprint.c,v 1.3 1999/02/05 00:06:08 oster Exp $ */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* Copyright (c) 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Mark Holland
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/*
* Code to do debug printfs. Calls to rf_debug_printf cause the corresponding
* information to be printed to a circular buffer rather than the screen.
* The point is to try and minimize the timing variations induced by the
* printfs, and to capture only the printf's immediately preceding a failure.
*/
#include <dev/raidframe/rf_types.h>
#include <dev/raidframe/rf_threadstuff.h>
#include <dev/raidframe/rf_debugprint.h>
#include <dev/raidframe/rf_general.h>
#include <dev/raidframe/rf_options.h>
#include <sys/param.h>
struct RF_Entry_s {
char *cstring;
void *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8;
};
/* space for 1k lines */
#define BUFSHIFT 10
#define BUFSIZE (1<<BUFSHIFT)
#define BUFMASK (BUFSIZE-1)
static struct RF_Entry_s rf_debugprint_buf[BUFSIZE];
static int rf_debugprint_index = 0;
RF_DECLARE_STATIC_MUTEX(rf_debug_print_mutex)
int rf_ConfigureDebugPrint(listp)
RF_ShutdownList_t **listp;
{
int rc;
rc = rf_create_managed_mutex(listp, &rf_debug_print_mutex);
if (rc) {
RF_ERRORMSG3("Unable to init mutex file %s line %d rc=%d\n", __FILE__,
__LINE__, rc);
return (rc);
}
rf_clear_debug_print_buffer();
return (0);
}
void
rf_clear_debug_print_buffer()
{
int i;
for (i = 0; i < BUFSIZE; i++)
rf_debugprint_buf[i].cstring = NULL;
rf_debugprint_index = 0;
}
void
rf_debug_printf(s, a1, a2, a3, a4, a5, a6, a7, a8)
char *s;
void *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8;
{
int idx;
if (rf_debugPrintUseBuffer) {
RF_LOCK_MUTEX(rf_debug_print_mutex);
idx = rf_debugprint_index;
rf_debugprint_index = (rf_debugprint_index + 1) & BUFMASK;
RF_UNLOCK_MUTEX(rf_debug_print_mutex);
rf_debugprint_buf[idx].cstring = s;
rf_debugprint_buf[idx].a1 = a1;
rf_debugprint_buf[idx].a2 = a2;
rf_debugprint_buf[idx].a3 = a3;
rf_debugprint_buf[idx].a4 = a4;
rf_debugprint_buf[idx].a5 = a5;
rf_debugprint_buf[idx].a6 = a6;
rf_debugprint_buf[idx].a7 = a7;
rf_debugprint_buf[idx].a8 = a8;
} else {
printf(s, a1, a2, a3, a4, a5, a6, a7, a8);
}
}
void
rf_print_debug_buffer()
{
rf_spill_debug_buffer(NULL);
}
void
rf_spill_debug_buffer(fname)
char *fname;
{
int i;
if (!rf_debugPrintUseBuffer)
return;
RF_LOCK_MUTEX(rf_debug_print_mutex);
for (i = rf_debugprint_index + 1; i != rf_debugprint_index; i = (i + 1) & BUFMASK)
if (rf_debugprint_buf[i].cstring)
printf(rf_debugprint_buf[i].cstring, rf_debugprint_buf[i].a1, rf_debugprint_buf[i].a2, rf_debugprint_buf[i].a3,
rf_debugprint_buf[i].a4, rf_debugprint_buf[i].a5, rf_debugprint_buf[i].a6, rf_debugprint_buf[i].a7, rf_debugprint_buf[i].a8);
printf(rf_debugprint_buf[i].cstring, rf_debugprint_buf[i].a1, rf_debugprint_buf[i].a2, rf_debugprint_buf[i].a3,
rf_debugprint_buf[i].a4, rf_debugprint_buf[i].a5, rf_debugprint_buf[i].a6, rf_debugprint_buf[i].a7, rf_debugprint_buf[i].a8);
RF_UNLOCK_MUTEX(rf_debug_print_mutex);
}
|
