17 lines
471 B
Plaintext
17 lines
471 B
Plaintext
:sig
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pid_t task_pid(String key)
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:params
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key : string uniquely identifying the task
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return value : the process ID of the task
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:desc
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Checks whether a process with the given 'key' is running and returns its PID if it is. Returns 0 otherwise.
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:see
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>task
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:related
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**PHP:** Background-process patterns using `proc_open()`, queues, cron, or worker supervisors
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**JavaScript / Node.js:** Node `child_process`, worker queues, timers, schedulers, and supervised background jobs
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