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perf tools: Make binary data printer code in trace_event public available

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Move code printing binray data from trace_event() to utils.c and allows
passing different printer. Further commits will use this logic to print
bpf output event.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1456312845-111583-2-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Wang Nan
2016-02-24 11:20:44 +00:00
committed by Arnaldo Carvalho de Melo
parent c19ac91245
commit c339b1a90e
3 changed files with 105 additions and 27 deletions
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37
tools/perf/util/util.c
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@@ -14,6 +14,7 @@
#include <limits.h>
#include <byteswap.h>
#include <linux/kernel.h>
#include <linux/log2.h>
#include <unistd.h>
#include "callchain.h"
#include "strlist.h"
@@ -670,3 +671,39 @@ int fetch_current_timestamp(char *buf, size_t sz)
return 0;
}
void print_binary(unsigned char *data, size_t len,
size_t bytes_per_line, print_binary_t printer,
void *extra)
{
size_t i, j, mask;
if (!printer)
return;
bytes_per_line = roundup_pow_of_two(bytes_per_line);
mask = bytes_per_line - 1;
printer(BINARY_PRINT_DATA_BEGIN, 0, extra);
for (i = 0; i < len; i++) {
if ((i & mask) == 0) {
printer(BINARY_PRINT_LINE_BEGIN, -1, extra);
printer(BINARY_PRINT_ADDR, i, extra);
}
printer(BINARY_PRINT_NUM_DATA, data[i], extra);
if (((i & mask) == mask) || i == len - 1) {
for (j = 0; j < mask-(i & mask); j++)
printer(BINARY_PRINT_NUM_PAD, -1, extra);
printer(BINARY_PRINT_SEP, i, extra);
for (j = i & ~mask; j <= i; j++)
printer(BINARY_PRINT_CHAR_DATA, data[j], extra);
for (j = 0; j < mask-(i & mask); j++)
printer(BINARY_PRINT_CHAR_PAD, i, extra);
printer(BINARY_PRINT_LINE_END, -1, extra);
}
}
printer(BINARY_PRINT_DATA_END, -1, extra);
}