Remove plot locking. #2217
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Remove plot locking. #2217
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* move stock arrays to test data
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Wrong merge target. |
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This PR addresses the post-merge issues raised by @dkillick on #2206.
Locking at the iris plot level will not guarantee to the user thread-safe plotting. There is still the possibility of an iris plot using an mpl figure from a different thread in certain circumstances. In the case of #2206, the implementation introduced a locking mechanism at the iris plotting api level, which is in fact at too low a level.
If a user insists on using iris plotting in a threaded context, then we should advocate that they take responsibility for locking themselves (which, to be fair, is pretty simple to do) in combination with creating the target mpl figure/axes.
Note that, for clarity, we do require to maintain non re-entrant locking at the individual graphics test case level to avoid the issues raised in #2195.
Closes #2210.