remove support for old buffers

[totaam]

Issue migrated from trac ticket # 935

component: core | priority: critical | resolution: fixed

2015-08-02 16:46:47: antoine created the issue

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Follow up from #465, see also #1073.
This will mean dropping compatibility with Python versions older than 2.7, which means that the release before it would probably have to be LTS.

[totaam]

2015-08-02 16:53:44: antoine uploaded file memoryview-buffer-wrapper.patch (35.5 KiB)

switch to a wrapper class for memalign memory

[totaam]

2015-08-02 16:55:45: antoine changed status from new to assigned

[totaam]

2015-08-02 16:55:45: antoine commented

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The patch above removes lots of ugly code, can help us avoid making copies in some cases and speeds up argb and cyxor by a factor of 2.

And whilst we're at it, we could probably drop support for Python3 versions older than 3.3 so we can assume PyMemoryView_FromMemory is present.

[totaam]

2015-11-13 13:26:35: antoine commented

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Let's make 0.17 and LTS, do this after.

[totaam]

2016-07-12 17:51:51: antoine commented

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Milestone renamed

[totaam]

2016-08-21 10:55:50: antoine commented

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Milestone renamed

[totaam]

2016-12-16 19:09:41: antoine commented

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r14514 removes support for old style buffers

[totaam]

2016-12-16 22:16:57: antoine changed status from assigned to new

[totaam]

2016-12-16 22:16:57: antoine changed owner from antoine to smo

[totaam]

2016-12-16 22:16:57: antoine commented

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The memoryview-buffer-wrapper patch has been merged in r14557.

Potential problems with this:

• performance? (should be at least as good as before)
• memory leaks, memory corruption, etc (fun!)

@smo: please run the automated tests and compare with v1.0 so we can make sure we don't have regressions anywhere.

[totaam]

2016-12-30 07:09:23: antoine changed priority from major to critical

[totaam]

2016-12-30 07:09:23: antoine edited the issue description

[totaam]

2017-01-29 13:58:10: antoine commented

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More related changes: r14519 (assume memoryview type is available), r14885: zerocopy in network layer!

[totaam]

2017-03-28 01:26:26: smo changed status from new to closed

[totaam]

2017-03-28 01:26:26: smo set resolution to fixed

[totaam]

2017-03-28 01:26:26: smo commented

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These have been in for some time and many automated tests ran with no issues.