From: Soeren Apel <soeren@apelpie.net>
Date: Tue, 2 Jan 2018 10:07:36 +0000 (+0100)
Subject: SignalBase: Don't terminate conversion when there's no data
X-Git-Url: http://git.code-monkey.de/?a=commitdiff_plain;h=2b3dda54bb8e390e6a5d378c0e88f2bafacf0870;hp=2b3dda54bb8e390e6a5d378c0e88f2bafacf0870;p=pulseview.git

SignalBase: Don't terminate conversion when there's no data

Instead of terminating, we wait instead.
We do this because SignalBase::on_samples_added() somehow doesn't
reliably see that there's no conversion thread active anymore.
conversion_thread_.joinable() returns true when the thread was
already terminated for whatever reason, resulting in on_samples_added()
trying to notify a non-existant thread.
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