mirror of https://github.com/m-labs/artiq.git
revert busy polling
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1e9a131386
commit
4c743cf8af
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@ -217,13 +217,13 @@ class CommKernel:
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def _read(self, length):
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# cache the reads to avoid frequent call to recv
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while len(self.read_buffer) < length:
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while True:
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try:
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flag = socket.MSG_DONTWAIT
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new_buffer = self.socket.recv(8192, flag)
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break
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except BlockingIOError:
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pass
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# the number is just the maximum amount
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# when there is not much data, it would return earlier
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diff = length - len(self.read_buffer)
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flag = 0
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if diff > 8192:
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flag |= socket.MSG_WAITALL
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new_buffer = self.socket.recv(8192, flag)
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if not new_buffer:
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raise ConnectionResetError("Core device connection closed unexpectedly")
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self.read_buffer += new_buffer
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