Created attachment 349583 [details] [review]
pad-monitor: Safely store expected accurate seek value

Protect the expected accurate seek value with the same lock as the one
that will be used to read/validate the resulting segment.

Avoids races with duplicated seeks

It's still racy. Trying to figure it out

Created attachment 349584 [details] [review]
pad-monitor: Safely store expected seek values

Protect the expected seek values with the same lock as the one
that will be used to read/validate the resulting segments and flush
values.

Avoids races with duplicated seeks (i.e. a seek that was already
sent and handled via another pad, such as in demuxers).

commit b156616b5c424ee2c5d2f9aa6d233106f3fe97a4
Author: Edward Hervey <edward@centricular.com>
Date:   Mon Apr 10 07:58:01 2017 +0200

    pad-monitor: Safely store expected seek values
    
    Protect the expected seek values with the same lock as the one
    that will be used to read/validate the resulting segments and flush
    values.
    
    Avoids races with duplicated seeks (i.e. a seek that was already
    sent and handled via another pad, such as in demuxers).
    
    https://bugzilla.gnome.org/show_bug.cgi?id=781112