----- On Feb 24, 2020, at 12:34 PM, Maxime Roussin-Belanger
[email protected] wrote:
[...]
> diff --git a/liblttng-ust/tracef.c b/liblttng-ust/tracef.c
> index ea98e43e..1311f0d5 100644
> --- a/liblttng-ust/tracef.c
> +++ b/liblttng-ust/tracef.c
> @@ -29,20 +29,26 @@
> #define TRACEPOINT_DEFINE
> #include "lttng-ust-tracef-provider.h"
>
> -void _lttng_ust_tracef(const char *fmt, ...)
> +void _lttng_ust_vtracef(const char *fmt, va_list ap)
> {
> - va_list ap;
> char *msg;
> - int len;
> -
> - va_start(ap, fmt);
> - len = vasprintf(&msg, fmt, ap);
> + const int len = vasprintf(&msg, fmt, ap);
> /* len does not include the final \0 */
> if (len < 0)
> goto end;
> __tracepoint_cb_lttng_ust_tracef___event(msg, len,
> LTTNG_UST_CALLER_IP());
> free(msg);
> end:
> + return;
> +}
> +
> +void _lttng_ust_tracef(const char *fmt, ...)
> +{
> + va_list ap;
> +
> + va_start(ap, fmt);
> + _lttng_ust_vtracef(fmt, ap);
> +
> va_end(ap);
> }
Can you check the result of the generated binary (compiled with -O2) to see if
there is an additional call added for _lttng_ust_trace() compared to the prior
generated code ? I would hate to add an extra call indirection there.
Thanks,
Mathieu
--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com
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