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comparison gcc/dbgcnt.c @ 0:a06113de4d67

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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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children 77e2b8dfacca
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-1:000000000000 0:a06113de4d67
1 /* Debug counter for debugging support
2 Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc.
3
4 This file is part of GCC.
5
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
9 version.
10
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>.
19
20 See dbgcnt.def for usage information. */
21
22 #include "config.h"
23 #include "system.h"
24 #include "coretypes.h"
25 #include "errors.h"
26 #include "tm.h"
27 #include "rtl.h"
28 #include "output.h"
29
30 #include "dbgcnt.h"
31
32 struct string2counter_map {
33 const char *name;
34 enum debug_counter counter;
35 };
36
37 #define DEBUG_COUNTER(a) { #a , a },
38
39 static struct string2counter_map map[debug_counter_number_of_counters] =
40 {
41 #include "dbgcnt.def"
42 };
43 #undef DEBUG_COUNTER
44
45 #define DEBUG_COUNTER(a) UINT_MAX,
46 static unsigned int limit[debug_counter_number_of_counters] =
47 {
48 #include "dbgcnt.def"
49 };
50 #undef DEBUG_COUNTER
51
52 static unsigned int count[debug_counter_number_of_counters];
53
54 bool
55 dbg_cnt_is_enabled (enum debug_counter index)
56 {
57 return count[index] <= limit[index];
58 }
59
60 bool
61 dbg_cnt (enum debug_counter index)
62 {
63 count[index]++;
64 if (dump_file && count[index] == limit[index])
65 fprintf (dump_file, "***dbgcnt: limit reached for %s.***\n",
66 map[index].name);
67
68 return dbg_cnt_is_enabled (index);
69 }
70
71
72 static void
73 dbg_cnt_set_limit_by_index (enum debug_counter index, int value)
74 {
75 limit[index] = value;
76
77 fprintf (stderr, "dbg_cnt '%s' set to %d\n", map[index].name, value);
78 }
79
80 static bool
81 dbg_cnt_set_limit_by_name (const char *name, int len, int value)
82 {
83 int i;
84 for (i = debug_counter_number_of_counters - 1; i >= 0; i--)
85 if (!strncmp (map[i].name, name, len))
86 break;
87
88 if (i < 0)
89 return false;
90
91 dbg_cnt_set_limit_by_index (i, value);
92 return true;
93 }
94
95
96 /* Process a single "name:value" pair.
97 Returns NULL if there's no valid pair is found.
98 Otherwise returns a pointer to the end of the pair. */
99
100 static const char *
101 dbg_cnt_process_single_pair (const char *arg)
102 {
103 char *colon = strchr (arg, ':');
104 char *endptr = NULL;
105 int value;
106
107 if (colon == NULL)
108 return NULL;
109
110 value = strtol (colon + 1, &endptr, 10);
111
112 if (endptr != NULL && endptr != colon + 1
113 && dbg_cnt_set_limit_by_name (arg, colon - arg, value))
114 return endptr;
115
116 return NULL;
117 }
118
119 void
120 dbg_cnt_process_opt (const char *arg)
121 {
122 const char *start = arg;
123 const char *next;
124 do {
125 next = dbg_cnt_process_single_pair (arg);
126 if (next == NULL)
127 break;
128 } while (*next == ',' && (arg = next + 1));
129
130 if (next == NULL || *next != 0)
131 {
132 char *buffer = XALLOCAVEC (char, arg - start + 2);
133 sprintf (buffer, "%*c", (int)(1 + (arg - start)), '^');
134 error ("Can not find a valid counter:value pair:");
135 error ("-fdbg-cnt=%s", start);
136 error (" %s", buffer);
137 }
138 }
139
140 /* Print name, limit and count of all counters. */
141
142 void
143 dbg_cnt_list_all_counters (void)
144 {
145 int i;
146 printf (" %-30s %-5s %-5s\n", "counter name", "limit", "value");
147 printf ("----------------------------------------------\n");
148 for (i = 0; i < debug_counter_number_of_counters; i++)
149 printf (" %-30s %5d %5u\n",
150 map[i].name, limit[map[i].counter], count[map[i].counter]);
151 printf ("\n");
152 }