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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /tools/perf/util/debug.c
Initial import
Diffstat (limited to 'tools/perf/util/debug.c')
-rw-r--r--tools/perf/util/debug.c189
1 files changed, 189 insertions, 0 deletions
diff --git a/tools/perf/util/debug.c b/tools/perf/util/debug.c
new file mode 100644
index 000000000..2da5581ec
--- /dev/null
+++ b/tools/perf/util/debug.c
@@ -0,0 +1,189 @@
+/* For general debugging purposes */
+
+#include "../perf.h"
+
+#include <string.h>
+#include <stdarg.h>
+#include <stdio.h>
+
+#include "cache.h"
+#include "color.h"
+#include "event.h"
+#include "debug.h"
+#include "util.h"
+#include "target.h"
+
+#define NSECS_PER_SEC 1000000000ULL
+#define NSECS_PER_USEC 1000ULL
+
+int verbose;
+bool dump_trace = false, quiet = false;
+int debug_ordered_events;
+static int redirect_to_stderr;
+int debug_data_convert;
+
+static int _eprintf(int level, int var, const char *fmt, va_list args)
+{
+ int ret = 0;
+
+ if (var >= level) {
+ if (use_browser >= 1 && !redirect_to_stderr)
+ ui_helpline__vshow(fmt, args);
+ else
+ ret = vfprintf(stderr, fmt, args);
+ }
+
+ return ret;
+}
+
+int eprintf(int level, int var, const char *fmt, ...)
+{
+ va_list args;
+ int ret;
+
+ va_start(args, fmt);
+ ret = _eprintf(level, var, fmt, args);
+ va_end(args);
+
+ return ret;
+}
+
+static int __eprintf_time(u64 t, const char *fmt, va_list args)
+{
+ int ret = 0;
+ u64 secs, usecs, nsecs = t;
+
+ secs = nsecs / NSECS_PER_SEC;
+ nsecs -= secs * NSECS_PER_SEC;
+ usecs = nsecs / NSECS_PER_USEC;
+
+ ret = fprintf(stderr, "[%13" PRIu64 ".%06" PRIu64 "] ",
+ secs, usecs);
+ ret += vfprintf(stderr, fmt, args);
+ return ret;
+}
+
+int eprintf_time(int level, int var, u64 t, const char *fmt, ...)
+{
+ int ret = 0;
+ va_list args;
+
+ if (var >= level) {
+ va_start(args, fmt);
+ ret = __eprintf_time(t, fmt, args);
+ va_end(args);
+ }
+
+ return ret;
+}
+
+/*
+ * Overloading libtraceevent standard info print
+ * function, display with -v in perf.
+ */
+void pr_stat(const char *fmt, ...)
+{
+ va_list args;
+
+ va_start(args, fmt);
+ _eprintf(1, verbose, fmt, args);
+ va_end(args);
+ eprintf(1, verbose, "\n");
+}
+
+int dump_printf(const char *fmt, ...)
+{
+ va_list args;
+ int ret = 0;
+
+ if (dump_trace) {
+ va_start(args, fmt);
+ ret = vprintf(fmt, args);
+ va_end(args);
+ }
+
+ return ret;
+}
+
+void trace_event(union perf_event *event)
+{
+ unsigned char *raw_event = (void *)event;
+ const char *color = PERF_COLOR_BLUE;
+ int i, j;
+
+ if (!dump_trace)
+ return;
+
+ printf(".");
+ color_fprintf(stdout, color, "\n. ... raw event: size %d bytes\n",
+ event->header.size);
+
+ for (i = 0; i < event->header.size; i++) {
+ if ((i & 15) == 0) {
+ printf(".");
+ color_fprintf(stdout, color, " %04x: ", i);
+ }
+
+ color_fprintf(stdout, color, " %02x", raw_event[i]);
+
+ if (((i & 15) == 15) || i == event->header.size-1) {
+ color_fprintf(stdout, color, " ");
+ for (j = 0; j < 15-(i & 15); j++)
+ color_fprintf(stdout, color, " ");
+ for (j = i & ~15; j <= i; j++) {
+ color_fprintf(stdout, color, "%c",
+ isprint(raw_event[j]) ?
+ raw_event[j] : '.');
+ }
+ color_fprintf(stdout, color, "\n");
+ }
+ }
+ printf(".\n");
+}
+
+static struct debug_variable {
+ const char *name;
+ int *ptr;
+} debug_variables[] = {
+ { .name = "verbose", .ptr = &verbose },
+ { .name = "ordered-events", .ptr = &debug_ordered_events},
+ { .name = "stderr", .ptr = &redirect_to_stderr},
+ { .name = "data-convert", .ptr = &debug_data_convert },
+ { .name = NULL, }
+};
+
+int perf_debug_option(const char *str)
+{
+ struct debug_variable *var = &debug_variables[0];
+ char *vstr, *s = strdup(str);
+ int v = 1;
+
+ vstr = strchr(s, '=');
+ if (vstr)
+ *vstr++ = 0;
+
+ while (var->name) {
+ if (!strcmp(s, var->name))
+ break;
+ var++;
+ }
+
+ if (!var->name) {
+ pr_err("Unknown debug variable name '%s'\n", s);
+ free(s);
+ return -1;
+ }
+
+ if (vstr) {
+ v = atoi(vstr);
+ /*
+ * Allow only values in range (0, 10),
+ * otherwise set 0.
+ */
+ v = (v < 0) || (v > 10) ? 0 : v;
+ }
+
+ *var->ptr = v;
+ free(s);
+ return 0;
+}