57 lines
1.7 KiB
Diff
57 lines
1.7 KiB
Diff
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commit 949d40b8d5c8bb78bb229d96c4b62122b66c4839
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Author: Dario Faggioli <dfaggioli@suse.com>
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Date: Tue Mar 23 16:01:15 2021 +0000
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Workaround Python 3 not doing unbuffered IO for text files
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On python3, running with -b cause this:
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Traceback (most recent call last):
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File "/usr/bin/irqstat", line 401, in <module>
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sys.exit(main(sys.argv))
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File "/usr/bin/irqstat", line 385, in main
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sys.stdout = os.fdopen(sys.stdout.fileno(), 'w', 0)
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File "/usr/lib64/python3.8/os.py", line 1023, in fdopen
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return io.open(fd, *args, **kwargs)
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ValueError: can't have unbuffered text I/O
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That's because unbuffered IO can't be done any longer
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(unless for binary IO).
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Workaround that wrapping stdout in a stream that is always
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flushed.
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Signed-off-by: Dario Faggioli <dfaggioli@suse.com>
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diff --git a/irqstat b/irqstat
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index fe882f4..9183a5a 100755
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--- a/irqstat
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+++ b/irqstat
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@@ -45,6 +45,17 @@ try:
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except ImportError:
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import _thread as thread
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+class Unbuffered:
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+ def __init__(self, stream):
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+ self.stream = stream
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+ def write(self, data):
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+ self.stream.write(data)
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+ self.stream.flush()
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+ def writelines(self, datas):
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+ self.stream.writelines(datas)
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+ self.stream.flush()
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+ def __getattr__(self, attr):
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+ return getattr(self.stream, attr)
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KEYEVENT = threading.Event()
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@@ -382,7 +393,7 @@ def main(args):
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# input thread
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thread.start_new_thread(wait_for_input, tuple())
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else:
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- sys.stdout = os.fdopen(sys.stdout.fileno(), 'w', 0)
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+ sys.stdout = Unbuffered(sys.stdout)
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try:
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display_itop(options.batch, int(options.time), int(options.rows),
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