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Commit | Line | Data |
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cd84c2ac FW |
1 | /* For general debugging purposes */ |
2 | ||
3 | #include "../perf.h" | |
8f28827a | 4 | |
fd20e811 | 5 | #include <inttypes.h> |
cd84c2ac FW |
6 | #include <string.h> |
7 | #include <stdarg.h> | |
8 | #include <stdio.h> | |
4208735d | 9 | #include <sys/wait.h> |
dd629cc0 | 10 | #include <api/debug.h> |
bd48c63e | 11 | #include <linux/time64.h> |
8c2b7cac ACM |
12 | #ifdef HAVE_BACKTRACE_SUPPORT |
13 | #include <execinfo.h> | |
14 | #endif | |
f9224c5c | 15 | #include "cache.h" |
8f28827a FW |
16 | #include "color.h" |
17 | #include "event.h" | |
18 | #include "debug.h" | |
fea01392 | 19 | #include "print_binary.h" |
4a58e611 | 20 | #include "util.h" |
16ad2ffb | 21 | #include "target.h" |
8f28827a | 22 | |
3d689ed6 ACM |
23 | #include "sane_ctype.h" |
24 | ||
b44308f5 ACM |
25 | int verbose; |
26 | bool dump_trace = false, quiet = false; | |
cee3ab9c | 27 | int debug_ordered_events; |
f78eaef0 | 28 | static int redirect_to_stderr; |
edbe9817 | 29 | int debug_data_convert; |
cd84c2ac | 30 | |
bedbdd42 | 31 | int veprintf(int level, int var, const char *fmt, va_list args) |
cd84c2ac | 32 | { |
cd84c2ac FW |
33 | int ret = 0; |
34 | ||
c95688aa | 35 | if (var >= level) { |
f78eaef0 | 36 | if (use_browser >= 1 && !redirect_to_stderr) |
b56e5331 | 37 | ui_helpline__vshow(fmt, args); |
f9224c5c ACM |
38 | else |
39 | ret = vfprintf(stderr, fmt, args); | |
cd84c2ac FW |
40 | } |
41 | ||
42 | return ret; | |
43 | } | |
2cec19d9 | 44 | |
c95688aa | 45 | int eprintf(int level, int var, const char *fmt, ...) |
f772abc6 JO |
46 | { |
47 | va_list args; | |
48 | int ret; | |
49 | ||
50 | va_start(args, fmt); | |
bedbdd42 | 51 | ret = veprintf(level, var, fmt, args); |
f772abc6 JO |
52 | va_end(args); |
53 | ||
54 | return ret; | |
55 | } | |
56 | ||
bedbdd42 | 57 | static int veprintf_time(u64 t, const char *fmt, va_list args) |
cee3ab9c JO |
58 | { |
59 | int ret = 0; | |
60 | u64 secs, usecs, nsecs = t; | |
61 | ||
bd48c63e ACM |
62 | secs = nsecs / NSEC_PER_SEC; |
63 | nsecs -= secs * NSEC_PER_SEC; | |
64 | usecs = nsecs / NSEC_PER_USEC; | |
cee3ab9c JO |
65 | |
66 | ret = fprintf(stderr, "[%13" PRIu64 ".%06" PRIu64 "] ", | |
67 | secs, usecs); | |
68 | ret += vfprintf(stderr, fmt, args); | |
69 | return ret; | |
70 | } | |
71 | ||
72 | int eprintf_time(int level, int var, u64 t, const char *fmt, ...) | |
73 | { | |
74 | int ret = 0; | |
75 | va_list args; | |
76 | ||
77 | if (var >= level) { | |
78 | va_start(args, fmt); | |
bedbdd42 | 79 | ret = veprintf_time(t, fmt, args); |
cee3ab9c JO |
80 | va_end(args); |
81 | } | |
82 | ||
83 | return ret; | |
84 | } | |
85 | ||
f772abc6 JO |
86 | /* |
87 | * Overloading libtraceevent standard info print | |
88 | * function, display with -v in perf. | |
89 | */ | |
90 | void pr_stat(const char *fmt, ...) | |
91 | { | |
92 | va_list args; | |
93 | ||
94 | va_start(args, fmt); | |
bedbdd42 | 95 | veprintf(1, verbose, fmt, args); |
f772abc6 | 96 | va_end(args); |
c95688aa | 97 | eprintf(1, verbose, "\n"); |
f772abc6 JO |
98 | } |
99 | ||
2cec19d9 FW |
100 | int dump_printf(const char *fmt, ...) |
101 | { | |
102 | va_list args; | |
103 | int ret = 0; | |
104 | ||
105 | if (dump_trace) { | |
106 | va_start(args, fmt); | |
107 | ret = vprintf(fmt, args); | |
108 | va_end(args); | |
109 | } | |
110 | ||
111 | return ret; | |
112 | } | |
8f28827a | 113 | |
c339b1a9 WN |
114 | static void trace_event_printer(enum binary_printer_ops op, |
115 | unsigned int val, void *extra) | |
116 | { | |
117 | const char *color = PERF_COLOR_BLUE; | |
118 | union perf_event *event = (union perf_event *)extra; | |
119 | unsigned char ch = (unsigned char)val; | |
120 | ||
121 | switch (op) { | |
122 | case BINARY_PRINT_DATA_BEGIN: | |
123 | printf("."); | |
124 | color_fprintf(stdout, color, "\n. ... raw event: size %d bytes\n", | |
125 | event->header.size); | |
126 | break; | |
127 | case BINARY_PRINT_LINE_BEGIN: | |
128 | printf("."); | |
129 | break; | |
130 | case BINARY_PRINT_ADDR: | |
131 | color_fprintf(stdout, color, " %04x: ", val); | |
132 | break; | |
133 | case BINARY_PRINT_NUM_DATA: | |
134 | color_fprintf(stdout, color, " %02x", val); | |
135 | break; | |
136 | case BINARY_PRINT_NUM_PAD: | |
137 | color_fprintf(stdout, color, " "); | |
138 | break; | |
139 | case BINARY_PRINT_SEP: | |
140 | color_fprintf(stdout, color, " "); | |
141 | break; | |
142 | case BINARY_PRINT_CHAR_DATA: | |
143 | color_fprintf(stdout, color, "%c", | |
144 | isprint(ch) ? ch : '.'); | |
145 | break; | |
146 | case BINARY_PRINT_CHAR_PAD: | |
147 | color_fprintf(stdout, color, " "); | |
148 | break; | |
149 | case BINARY_PRINT_LINE_END: | |
150 | color_fprintf(stdout, color, "\n"); | |
151 | break; | |
152 | case BINARY_PRINT_DATA_END: | |
153 | printf("\n"); | |
154 | break; | |
155 | default: | |
156 | break; | |
157 | } | |
158 | } | |
159 | ||
8115d60c | 160 | void trace_event(union perf_event *event) |
8f28827a FW |
161 | { |
162 | unsigned char *raw_event = (void *)event; | |
8f28827a FW |
163 | |
164 | if (!dump_trace) | |
165 | return; | |
166 | ||
c339b1a9 WN |
167 | print_binary(raw_event, event->header.size, 16, |
168 | trace_event_printer, event); | |
8f28827a | 169 | } |
bbb2cea7 JO |
170 | |
171 | static struct debug_variable { | |
172 | const char *name; | |
173 | int *ptr; | |
174 | } debug_variables[] = { | |
cee3ab9c JO |
175 | { .name = "verbose", .ptr = &verbose }, |
176 | { .name = "ordered-events", .ptr = &debug_ordered_events}, | |
f78eaef0 | 177 | { .name = "stderr", .ptr = &redirect_to_stderr}, |
edbe9817 | 178 | { .name = "data-convert", .ptr = &debug_data_convert }, |
bbb2cea7 JO |
179 | { .name = NULL, } |
180 | }; | |
181 | ||
182 | int perf_debug_option(const char *str) | |
183 | { | |
184 | struct debug_variable *var = &debug_variables[0]; | |
185 | char *vstr, *s = strdup(str); | |
186 | int v = 1; | |
187 | ||
188 | vstr = strchr(s, '='); | |
189 | if (vstr) | |
190 | *vstr++ = 0; | |
191 | ||
192 | while (var->name) { | |
193 | if (!strcmp(s, var->name)) | |
194 | break; | |
195 | var++; | |
196 | } | |
197 | ||
198 | if (!var->name) { | |
199 | pr_err("Unknown debug variable name '%s'\n", s); | |
200 | free(s); | |
201 | return -1; | |
202 | } | |
203 | ||
204 | if (vstr) { | |
205 | v = atoi(vstr); | |
206 | /* | |
207 | * Allow only values in range (0, 10), | |
208 | * otherwise set 0. | |
209 | */ | |
210 | v = (v < 0) || (v > 10) ? 0 : v; | |
211 | } | |
212 | ||
80df1988 NK |
213 | if (quiet) |
214 | v = -1; | |
215 | ||
bbb2cea7 JO |
216 | *var->ptr = v; |
217 | free(s); | |
218 | return 0; | |
219 | } | |
dd629cc0 | 220 | |
80df1988 NK |
221 | int perf_quiet_option(void) |
222 | { | |
223 | struct debug_variable *var = &debug_variables[0]; | |
224 | ||
225 | /* disable all debug messages */ | |
226 | while (var->name) { | |
227 | *var->ptr = -1; | |
228 | var++; | |
229 | } | |
230 | ||
231 | quiet = true; | |
232 | return 0; | |
233 | } | |
234 | ||
dd629cc0 JO |
235 | #define DEBUG_WRAPPER(__n, __l) \ |
236 | static int pr_ ## __n ## _wrapper(const char *fmt, ...) \ | |
237 | { \ | |
238 | va_list args; \ | |
239 | int ret; \ | |
240 | \ | |
241 | va_start(args, fmt); \ | |
242 | ret = veprintf(__l, verbose, fmt, args); \ | |
243 | va_end(args); \ | |
244 | return ret; \ | |
245 | } | |
246 | ||
247 | DEBUG_WRAPPER(warning, 0); | |
248 | DEBUG_WRAPPER(debug, 1); | |
249 | ||
250 | void perf_debug_setup(void) | |
251 | { | |
252 | libapi_set_print(pr_warning_wrapper, pr_warning_wrapper, pr_debug_wrapper); | |
253 | } | |
8c2b7cac ACM |
254 | |
255 | /* Obtain a backtrace and print it to stdout. */ | |
256 | #ifdef HAVE_BACKTRACE_SUPPORT | |
257 | void dump_stack(void) | |
258 | { | |
259 | void *array[16]; | |
260 | size_t size = backtrace(array, ARRAY_SIZE(array)); | |
261 | char **strings = backtrace_symbols(array, size); | |
262 | size_t i; | |
263 | ||
264 | printf("Obtained %zd stack frames.\n", size); | |
265 | ||
266 | for (i = 0; i < size; i++) | |
267 | printf("%s\n", strings[i]); | |
268 | ||
269 | free(strings); | |
270 | } | |
271 | #else | |
272 | void dump_stack(void) {} | |
273 | #endif | |
274 | ||
275 | void sighandler_dump_stack(int sig) | |
276 | { | |
277 | psignal(sig, "perf"); | |
278 | dump_stack(); | |
279 | signal(sig, SIG_DFL); | |
280 | raise(sig); | |
281 | } |