D7595: Skip reload when another reload is already in progress

[Henrik Fehlauer]

rkflx added a comment.


  Do you suggest I should write my own bool-based RAII wrapper, which would be racy, less efficient, buggy, more verbose and harder to read? Using a mutex solves the maintainability risk outlined in https://phabricator.kde.org/D7495#141032 with no costs. Also, when researching this, I got the impression that a mutex is more customary when locking is involved (which is what we are doing here).

REPOSITORY
  R223 Okular

REVISION DETAIL
  https://phabricator.kde.org/D7595

To: rkflx, #okular
Cc: aacid
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