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authorJohn Estabrook <jestabro@vyos.io>2021-02-17 15:25:54 -0600
committerJohn Estabrook <jestabro@vyos.io>2021-02-17 15:42:15 -0600
commit83bcd13775323bec35d018223029e9a8b13179c8 (patch)
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parent4cdfb1f0be743371cfb75e428742b252be4ff64f (diff)
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configsession: T3259: avoid deadlock when data fills stdout pipe
If the subprocess is producing enough data (in this case showConfig on a large config file), then the construction: p = subprocess.Popen(.., stdout=subprocess.PIPE, ..) p.wait() will deadlock with the subprocess waiting for data to be consumed, while the Python process waits for its termination. So consume data, then wait for termination.
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