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6fb5fa3c | 1 | /* Debug counter for debugging support |
99dee823 | 2 | Copyright (C) 2006-2021 Free Software Foundation, Inc. |
6fb5fa3c DB |
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 | 17 | along with GCC; see the file COPYING3. If not see |
b8698a0f | 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" | |
718f9c0f | 25 | #include "diagnostic-core.h" |
7ee2468b | 26 | #include "dumpfile.h" |
5024c8bb | 27 | #include "selftest.h" |
03df119d | 28 | #include "intl.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 | ||
83a49336 | 45 | typedef std::pair<unsigned int, unsigned int> limit_tuple; |
6fb5fa3c | 46 | |
83a49336 | 47 | static vec<limit_tuple> limits[debug_counter_number_of_counters]; |
a30d4fc5 | 48 | static vec<limit_tuple> original_limits[debug_counter_number_of_counters]; |
cdc3b883 | 49 | |
6fb5fa3c DB |
50 | static unsigned int count[debug_counter_number_of_counters]; |
51 | ||
dd7fa0d4 ML |
52 | static void |
53 | print_limit_reach (const char *counter, int limit, bool upper_p) | |
54 | { | |
55 | char buffer[128]; | |
56 | sprintf (buffer, "***dbgcnt: %s limit %d reached for %s.***\n", | |
57 | upper_p ? "upper" : "lower", limit, counter); | |
58 | fputs (buffer, stderr); | |
59 | if (dump_file) | |
60 | fputs (buffer, dump_file); | |
61 | } | |
62 | ||
6fb5fa3c DB |
63 | bool |
64 | dbg_cnt (enum debug_counter index) | |
65 | { | |
83a49336 ML |
66 | unsigned v = ++count[index]; |
67 | ||
68 | if (!limits[index].exists ()) | |
69 | return true; | |
70 | else if (limits[index].is_empty ()) | |
71 | return false; | |
cdc3b883 | 72 | |
83a49336 ML |
73 | unsigned last = limits[index].length () - 1; |
74 | unsigned int min = limits[index][last].first; | |
75 | unsigned int max = limits[index][last].second; | |
cc806ac1 | 76 | |
83a49336 ML |
77 | if (v < min) |
78 | return false; | |
79 | else if (v == min) | |
80 | { | |
81 | print_limit_reach (map[index].name, v, false); | |
82 | if (min == max) | |
8988ec5b ML |
83 | { |
84 | print_limit_reach (map[index].name, v, true); | |
85 | limits[index].pop (); | |
86 | } | |
83a49336 ML |
87 | return true; |
88 | } | |
89 | else if (v < max) | |
90 | return true; | |
91 | else if (v == max) | |
92 | { | |
93 | print_limit_reach (map[index].name, v, true); | |
94 | limits[index].pop (); | |
95 | return true; | |
96 | } | |
97 | else | |
98 | return false; | |
6fb5fa3c DB |
99 | } |
100 | ||
83a49336 | 101 | /* Compare limit_tuple intervals by first item in descending order. */ |
6fb5fa3c | 102 | |
83a49336 ML |
103 | static int |
104 | cmp_tuples (const void *ptr1, const void *ptr2) | |
105 | { | |
106 | const limit_tuple *p1 = (const limit_tuple *)ptr1; | |
107 | const limit_tuple *p2 = (const limit_tuple *)ptr2; | |
108 | ||
109 | if (p1->first < p2->first) | |
110 | return 1; | |
111 | else if (p1->first > p2->first) | |
112 | return -1; | |
113 | return 0; | |
6fb5fa3c DB |
114 | } |
115 | ||
0a090f42 | 116 | static bool |
83a49336 ML |
117 | dbg_cnt_set_limit_by_index (enum debug_counter index, const char *name, |
118 | unsigned int low, unsigned int high) | |
6fb5fa3c | 119 | { |
83a49336 ML |
120 | if (!limits[index].exists ()) |
121 | limits[index].create (1); | |
cdc3b883 | 122 | |
83a49336 ML |
123 | limits[index].safe_push (limit_tuple (low, high)); |
124 | limits[index].qsort (cmp_tuples); | |
125 | ||
126 | for (unsigned i = 0; i < limits[index].length () - 1; i++) | |
cdc3b883 | 127 | { |
83a49336 ML |
128 | limit_tuple t1 = limits[index][i]; |
129 | limit_tuple t2 = limits[index][i + 1]; | |
130 | if (t1.first <= t2.second) | |
131 | { | |
132 | error ("Interval overlap of %<-fdbg-cnt=%s%>: [%u, %u] and " | |
47fe9634 | 133 | "[%u, %u]", name, t2.first, t2.second, t1.first, t1.second); |
83a49336 ML |
134 | return false; |
135 | } | |
cdc3b883 ML |
136 | } |
137 | ||
a30d4fc5 ML |
138 | original_limits[index] = limits[index].copy (); |
139 | ||
83a49336 ML |
140 | return true; |
141 | } | |
142 | ||
143 | static bool | |
144 | dbg_cnt_set_limit_by_name (const char *name, unsigned int low, | |
145 | unsigned int high) | |
146 | { | |
147 | if (high < low) | |
cdc3b883 | 148 | { |
83a49336 ML |
149 | error ("%<-fdbg-cnt=%s:%d-%d%> has smaller upper limit than the lower", |
150 | name, low, high); | |
cdc3b883 ML |
151 | return false; |
152 | } | |
153 | ||
6fb5fa3c DB |
154 | int i; |
155 | for (i = debug_counter_number_of_counters - 1; i >= 0; i--) | |
cdc3b883 | 156 | if (strcmp (map[i].name, name) == 0) |
6fb5fa3c DB |
157 | break; |
158 | ||
159 | if (i < 0) | |
342ae9ad ML |
160 | { |
161 | error ("cannot find a valid counter name %qs of %<-fdbg-cnt=%> option", | |
162 | name); | |
163 | return false; | |
164 | } | |
6fb5fa3c | 165 | |
83a49336 | 166 | return dbg_cnt_set_limit_by_index ((enum debug_counter) i, name, low, high); |
6fb5fa3c DB |
167 | } |
168 | ||
83a49336 | 169 | /* Process a single "low:high" pair. |
0a090f42 SP |
170 | Returns NULL if there's no valid pair is found. |
171 | Otherwise returns a pointer to the end of the pair. */ | |
172 | ||
cdc3b883 | 173 | static bool |
83a49336 | 174 | dbg_cnt_process_single_pair (char *name, char *str) |
6fb5fa3c | 175 | { |
83a49336 ML |
176 | char *value1 = strtok (str, "-"); |
177 | char *value2 = strtok (NULL, "-"); | |
cdc3b883 | 178 | |
83a49336 | 179 | unsigned int high, low; |
cdc3b883 ML |
180 | |
181 | if (value1 == NULL) | |
5433e401 | 182 | return false; |
cdc3b883 ML |
183 | |
184 | if (value2 == NULL) | |
185 | { | |
cdc3b883 | 186 | high = strtol (value1, NULL, 10); |
342ae9ad ML |
187 | /* Let's allow 0:0. */ |
188 | low = high == 0 ? 0 : 1; | |
cdc3b883 ML |
189 | } |
190 | else | |
191 | { | |
192 | low = strtol (value1, NULL, 10); | |
193 | high = strtol (value2, NULL, 10); | |
194 | } | |
195 | ||
2a7108b9 | 196 | return dbg_cnt_set_limit_by_name (name, low, high); |
0a090f42 | 197 | } |
6fb5fa3c | 198 | |
0a090f42 SP |
199 | void |
200 | dbg_cnt_process_opt (const char *arg) | |
201 | { | |
cdc3b883 | 202 | char *str = xstrdup (arg); |
cdc3b883 ML |
203 | unsigned int start = 0; |
204 | ||
83a49336 ML |
205 | auto_vec<char *> tokens; |
206 | for (char *next = strtok (str, ","); next != NULL; next = strtok (NULL, ",")) | |
2a7108b9 ML |
207 | tokens.safe_push (next); |
208 | ||
209 | unsigned i; | |
210 | for (i = 0; i < tokens.length (); i++) | |
211 | { | |
83a49336 ML |
212 | auto_vec<char *> ranges; |
213 | char *name = strtok (tokens[i], ":"); | |
214 | for (char *part = strtok (NULL, ":"); part; part = strtok (NULL, ":")) | |
215 | ranges.safe_push (part); | |
216 | ||
217 | for (unsigned j = 0; j < ranges.length (); j++) | |
218 | { | |
219 | if (!dbg_cnt_process_single_pair (name, ranges[j])) | |
220 | break; | |
221 | } | |
222 | start += strlen (tokens[i]) + 1; | |
2a7108b9 | 223 | } |
6fb5fa3c | 224 | } |
0a090f42 SP |
225 | |
226 | /* Print name, limit and count of all counters. */ | |
227 | ||
b8698a0f | 228 | void |
cc806ac1 | 229 | dbg_cnt_list_all_counters (void) |
0a090f42 SP |
230 | { |
231 | int i; | |
a30d4fc5 ML |
232 | fprintf (stderr, " %-30s%-15s %s\n", G_("counter name"), |
233 | G_("counter value"), G_("closed intervals")); | |
234 | fprintf (stderr, "-----------------------------------------------------------------\n"); | |
0a090f42 | 235 | for (i = 0; i < debug_counter_number_of_counters; i++) |
83a49336 | 236 | { |
a30d4fc5 ML |
237 | fprintf (stderr, " %-30s%-15d ", map[i].name, count[i]); |
238 | if (original_limits[i].exists ()) | |
83a49336 | 239 | { |
a30d4fc5 | 240 | for (int j = original_limits[i].length () - 1; j >= 0; j--) |
83a49336 | 241 | { |
a30d4fc5 ML |
242 | fprintf (stderr, "[%u, %u]", original_limits[i][j].first, |
243 | original_limits[i][j].second); | |
83a49336 | 244 | if (j > 0) |
a30d4fc5 | 245 | fprintf (stderr, ", "); |
83a49336 | 246 | } |
a30d4fc5 | 247 | fprintf (stderr, "\n"); |
83a49336 ML |
248 | } |
249 | else | |
a30d4fc5 | 250 | fprintf (stderr, "unset\n"); |
83a49336 | 251 | } |
a30d4fc5 | 252 | fprintf (stderr, "\n"); |
0a090f42 | 253 | } |
5024c8bb ML |
254 | |
255 | #if CHECKING_P | |
256 | ||
257 | namespace selftest { | |
258 | ||
259 | /* Selftests. */ | |
260 | ||
261 | static void | |
262 | test_sorted_dbg_counters () | |
263 | { | |
264 | for (unsigned i = 0; i < debug_counter_number_of_counters - 1; i++) | |
265 | ASSERT_LT (strcmp (map[i].name, map[i + 1].name), 0); | |
266 | } | |
267 | ||
268 | void | |
269 | dbgcnt_c_tests () | |
270 | { | |
271 | test_sorted_dbg_counters (); | |
272 | } | |
273 | ||
274 | } // namespace selftest | |
275 | ||
276 | #endif /* #if CHECKING_P */ |