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json_print: Add print_tv() 

Add a helper to dump a timeval. Print by first converting to double and
then dispatching to print_color_float().

Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
This commit is contained in:
Petr Machata 2021-03-17 13:54:31 +01:00 committed by David Ahern
parent a5b355c08c
commit e757f741e9
2 changed files with 14 additions and 0 deletions
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1
include/json_print.h
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@ -81,6 +81,7 @@ _PRINT_FUNC(0xhex, unsigned long long)
_PRINT_FUNC(luint, unsigned long)
_PRINT_FUNC(lluint, unsigned long long)
_PRINT_FUNC(float, double)
_PRINT_FUNC(tv, const struct timeval *)
#undef _PRINT_FUNC
#define _PRINT_NAME_VALUE_FUNC(type_name, type, format_char) \

13
lib/json_print.c
View File

@ -299,6 +299,19 @@ int print_color_null(enum output_type type,
return ret;
}
int print_color_tv(enum output_type type,
enum color_attr color,
const char *key,
const char *fmt,
const struct timeval *tv)
{
double usecs = tv->tv_usec;
double secs = tv->tv_sec;
double time = secs + usecs / 1000000;
return print_color_float(type, color, key, fmt, time);
}
/* Print line separator (if not in JSON mode) */
void print_nl(void)
{