debug.c

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/* 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"

int verbose;
bool dump_trace = false, quiet = false;

int eprintf(int level, const char *fmt, ...)
{
    va_list args;
    int ret = 0;

    if (verbose >= level) {
        va_start(args, fmt);
        if (use_browser == 1)
            ret = ui_helpline__show_help(fmt, args);
        else if (use_browser == 2)
            ret = perf_gtk__show_helpline(fmt, args);
        else
            ret = vfprintf(stderr, fmt, args);
        va_end(args);
    }

    return ret;
}

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;
}

#if !defined(NEWT_SUPPORT) && !defined(GTK2_SUPPORT)
int ui__warning(const char *format, ...)
{
    va_list args;

    va_start(args, format);
    vfprintf(stderr, format, args);
    va_end(args);
    return 0;
}
#endif

int ui__error_paranoid(void)
{
    return ui__error("Permission error - are you root?\n"
            "Consider tweaking /proc/sys/kernel/perf_event_paranoid:\n"
            " -1 - Not paranoid at all\n"
            "  0 - Disallow raw tracepoint access for unpriv\n"
            "  1 - Disallow cpu events for unpriv\n"
            "  2 - Disallow kernel profiling for unpriv\n");
}

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");
}