From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Wed, 18 Sep 2019 16:34:07 +0000 (-0400)
Subject: Add a copy method to the trace chunk interface
X-Git-Tag: v2.12.0-rc1~367
X-Git-Url: https://git.lttng.org/?a=commitdiff_plain;ds=sidebyside;h=1a414e3a88844a96aa23842822150ac44c391ed2;hp=1a414e3a88844a96aa23842822150ac44c391ed2;p=lttng-tools.git

Add a copy method to the trace chunk interface

Trace chunks may now be copied. This will allow, in a follow-up fix,
streams to use the trace chunk facilities without extending the
life-time of an existing chunk.

However, note that the copy of an "owner" chunk returns a "user"
chunk. While this may be surprising at first, it makes no sense for
two "owner" trace chunks to point to the same location.

In such a case, it would be legal for both trace chunks to arbitrarily
modify their underlying sub-folder hierarchies without coordinating
among themselves. This would break the existing "move to completed"
close command, for instance.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
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