1 /* For general debugging purposes */
10 #include <api/debug.h>
11 #include <linux/time64.h>
12 #ifdef HAVE_BACKTRACE_SUPPORT
19 #include "print_binary.h"
23 #include "sane_ctype.h"
26 bool dump_trace = false, quiet = false;
27 int debug_ordered_events;
28 static int redirect_to_stderr;
29 int debug_data_convert;
31 int veprintf(int level, int var, const char *fmt, va_list args)
36 if (use_browser >= 1 && !redirect_to_stderr)
37 ui_helpline__vshow(fmt, args);
39 ret = vfprintf(stderr, fmt, args);
45 int eprintf(int level, int var, const char *fmt, ...)
51 ret = veprintf(level, var, fmt, args);
57 static int veprintf_time(u64 t, const char *fmt, va_list args)
60 u64 secs, usecs, nsecs = t;
62 secs = nsecs / NSEC_PER_SEC;
63 nsecs -= secs * NSEC_PER_SEC;
64 usecs = nsecs / NSEC_PER_USEC;
66 ret = fprintf(stderr, "[%13" PRIu64 ".%06" PRIu64 "] ",
68 ret += vfprintf(stderr, fmt, args);
72 int eprintf_time(int level, int var, u64 t, const char *fmt, ...)
79 ret = veprintf_time(t, fmt, args);
87 * Overloading libtraceevent standard info print
88 * function, display with -v in perf.
90 void pr_stat(const char *fmt, ...)
95 veprintf(1, verbose, fmt, args);
97 eprintf(1, verbose, "\n");
100 int dump_printf(const char *fmt, ...)
107 ret = vprintf(fmt, args);
114 static void trace_event_printer(enum binary_printer_ops op,
115 unsigned int val, void *extra)
117 const char *color = PERF_COLOR_BLUE;
118 union perf_event *event = (union perf_event *)extra;
119 unsigned char ch = (unsigned char)val;
122 case BINARY_PRINT_DATA_BEGIN:
124 color_fprintf(stdout, color, "\n. ... raw event: size %d bytes\n",
127 case BINARY_PRINT_LINE_BEGIN:
130 case BINARY_PRINT_ADDR:
131 color_fprintf(stdout, color, " %04x: ", val);
133 case BINARY_PRINT_NUM_DATA:
134 color_fprintf(stdout, color, " %02x", val);
136 case BINARY_PRINT_NUM_PAD:
137 color_fprintf(stdout, color, " ");
139 case BINARY_PRINT_SEP:
140 color_fprintf(stdout, color, " ");
142 case BINARY_PRINT_CHAR_DATA:
143 color_fprintf(stdout, color, "%c",
144 isprint(ch) ? ch : '.');
146 case BINARY_PRINT_CHAR_PAD:
147 color_fprintf(stdout, color, " ");
149 case BINARY_PRINT_LINE_END:
150 color_fprintf(stdout, color, "\n");
152 case BINARY_PRINT_DATA_END:
160 void trace_event(union perf_event *event)
162 unsigned char *raw_event = (void *)event;
167 print_binary(raw_event, event->header.size, 16,
168 trace_event_printer, event);
171 static struct debug_variable {
174 } debug_variables[] = {
175 { .name = "verbose", .ptr = &verbose },
176 { .name = "ordered-events", .ptr = &debug_ordered_events},
177 { .name = "stderr", .ptr = &redirect_to_stderr},
178 { .name = "data-convert", .ptr = &debug_data_convert },
182 int perf_debug_option(const char *str)
184 struct debug_variable *var = &debug_variables[0];
185 char *vstr, *s = strdup(str);
188 vstr = strchr(s, '=');
193 if (!strcmp(s, var->name))
199 pr_err("Unknown debug variable name '%s'\n", s);
207 * Allow only values in range (0, 10),
210 v = (v < 0) || (v > 10) ? 0 : v;
221 int perf_quiet_option(void)
223 struct debug_variable *var = &debug_variables[0];
225 /* disable all debug messages */
235 #define DEBUG_WRAPPER(__n, __l) \
236 static int pr_ ## __n ## _wrapper(const char *fmt, ...) \
241 va_start(args, fmt); \
242 ret = veprintf(__l, verbose, fmt, args); \
247 DEBUG_WRAPPER(warning, 0);
248 DEBUG_WRAPPER(debug, 1);
250 void perf_debug_setup(void)
252 libapi_set_print(pr_warning_wrapper, pr_warning_wrapper, pr_debug_wrapper);
255 /* Obtain a backtrace and print it to stdout. */
256 #ifdef HAVE_BACKTRACE_SUPPORT
257 void dump_stack(void)
260 size_t size = backtrace(array, ARRAY_SIZE(array));
261 char **strings = backtrace_symbols(array, size);
264 printf("Obtained %zd stack frames.\n", size);
266 for (i = 0; i < size; i++)
267 printf("%s\n", strings[i]);
272 void dump_stack(void) {}
275 void sighandler_dump_stack(int sig)
277 psignal(sig, "perf");
279 signal(sig, SIG_DFL);