mirror of
https://gitee.com/sui-feng-cb/AzurLaneAutoScript1
synced 2026-03-12 22:37:00 +08:00
48 lines
1.4 KiB
Python
48 lines
1.4 KiB
Python
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import os
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import time
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def is_process_exist(pid):
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try:
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os.kill(pid, 0)
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except OSError:
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return False
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else:
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return True
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def orphanSlayer(ppid, spid, prekill = ""):
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"""
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module.webui.process_manager.ProcessManager.stop() uses kill() to stop subprocess
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and to a large extent it cannot be changed to terminate(), see #883
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In *nix systems, process created by subprosecc.Popen does not exit with the parent process,
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and there are no options of daemon=True, etc.
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So there need to be some way to ensure sub-subprocess to be killed other than capturing SIGTERM,
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such as:
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1. Set subprocess to a new process group and killpg() in ProcessManager.stop()
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2. Try to terminate() or send other signals before kill()
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3. Make sub-subprocess end itself when it does not receive a heartbeat
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All of these seemingly elegant solutions require invasive changes,
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therefore, I choose to open another process, once the father dead, kill the son as well
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So called orphanSlayer
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Lme曰：「你可以通过经常拉屎，来结交朋友（」
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"""
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while is_process_exist(ppid):
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if not is_process_exist(spid):
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return
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time.sleep(1)
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if prekill:
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os.system(prekill)
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os.kill(spid, 9)
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if __name__ == "__main__":
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# python orphanSlayer.py 114 514 "docker stop ..."
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import sys
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orphanSlayer(int(sys.argv[1]), int(sys.argv[2]), sys.argv[3])
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