Process.waitall รข [ [pid1,status1], ...]
Class Public methods
Waits for all children, returning an array of pid/status
pairs (where status is a Process::Status object).
fork { sleep 0.2; exit 2 } #=> 27432
fork { sleep 0.1; exit 1 } #=> 27433
fork { exit 0 } #=> 27434
p Process.waitall
produces:
[[30982, #<Process::Status: pid 30982 exit 0>], [30979, #<Process::Status: pid 30979 exit 1>], [30976, #<Process::Status: pid 30976 exit 2>]]
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