From: Norbert Lange <nolange79@gmail.com>
Date: Mon, 1 Aug 2022 14:35:24 +0000 (+0200)
Subject: Improve tracef/tracelog to use the stack for small strings
X-Git-Url: http://git.lttng.org/?a=commitdiff_plain;h=1c0569ec0d094571d181d1fce53ecfce8877614f;hp=1c0569ec0d094571d181d1fce53ecfce8877614f;p=lttng-ust.git

Improve tracef/tracelog to use the stack for small strings

Support two common cases, one being that the resulting message is
small enough to fit into a on-stack buffer.
The seconds being the common 'printf("%s", "Message")' scheme.

Unfortunately, iterating a va_list is destructive,
so it has to be copied before calling vprintf.

The implementation was moved to a separate file,
used by both tracef.c and tracelog.c.

Signed-off-by: Norbert Lange <nolange79@gmail.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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