add support for drain #83
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great ,, |
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@wissamalkja could you merge it? I've looked for the same feature. |
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Tested on Mac OS, Linux and Windows with UART emulated on USB. I wrote general BSD code, because it should work, but I am not able to test it. On Mac OS I am quite sure that drain behaves as expected because it fixed an issue with buffer overflow (which OS does not report but fails). For Windows it seems that drain is actually part of `Write`, because `Write` was long and `Drain` was fast. But I have not found any mention in Win32 docs about buffering and asynchronous write, so I put there flushing code to be sure, and this code did not break anything. For Linux `Drain` is also taking more time than writing so it looks working too.
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The Linux implementation has been replaced with #159. |
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Tested on Mac OS, Linux and Windows with UART emulated on USB.
I wrote general BSD code, because it should work, but I am not able to test it.
On Mac OS I am quite sure that drain behaves as needed.
For Windows it seems that drain is actually part of
Write, becauseWritewas slow andDrainwas fast. But I have not found any mention in Win32 docs about buffering and asynchronous write, so I kept it.For Linux
Drainis also taking more time than writing.