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6fb5fa3c DB |
1 | /* Debug counter for debugging support |
2 | Copyright (C) 2006, 2007 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 | |
9dcd6f09 | 8 | Software Foundation; either version 3, or (at your option) any later |
6fb5fa3c DB |
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 | |
9dcd6f09 NC |
17 | along with GCC; see the file COPYING3. If not see |
18 | <http://www.gnu.org/licenses/>. | |
6fb5fa3c DB |
19 | |
20 | See dbgcnt.def for usage information. */ | |
21 | ||
22 | #include "config.h" | |
23 | #include "system.h" | |
24 | #include "coretypes.h" | |
0a090f42 | 25 | #include "errors.h" |
cc806ac1 RS |
26 | #include "tm.h" |
27 | #include "rtl.h" | |
28 | #include "output.h" | |
6fb5fa3c DB |
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]++; | |
cc806ac1 RS |
64 | if (dump_file && count[index] == limit[index]) |
65 | fprintf (dump_file, "***dbgcnt: limit reached for %s.***\n", | |
66 | map[index].name); | |
67 | ||
6fb5fa3c DB |
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 | ||
0a090f42 | 80 | static bool |
6fb5fa3c DB |
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) | |
0a090f42 | 89 | return false; |
6fb5fa3c DB |
90 | |
91 | dbg_cnt_set_limit_by_index (i, value); | |
0a090f42 | 92 | return true; |
6fb5fa3c DB |
93 | } |
94 | ||
0a090f42 SP |
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) | |
6fb5fa3c DB |
102 | { |
103 | char *colon = strchr (arg, ':'); | |
0a090f42 SP |
104 | char *endptr = NULL; |
105 | int value; | |
6fb5fa3c DB |
106 | |
107 | if (colon == NULL) | |
0a090f42 SP |
108 | return NULL; |
109 | ||
110 | value = strtol (colon + 1, &endptr, 10); | |
6fb5fa3c | 111 | |
0a090f42 SP |
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 | } | |
6fb5fa3c | 118 | |
0a090f42 SP |
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) | |
6fb5fa3c | 131 | { |
f883e0a7 | 132 | char *buffer = XALLOCAVEC (char, arg - start + 2); |
0a090f42 SP |
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); | |
6fb5fa3c DB |
137 | } |
138 | } | |
0a090f42 SP |
139 | |
140 | /* Print name, limit and count of all counters. */ | |
141 | ||
cc806ac1 RS |
142 | void |
143 | dbg_cnt_list_all_counters (void) | |
0a090f42 SP |
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 | } |