I know that SIGCONT continues the process previously stopped by SIGSTOP. Can I use SIGCONT several times without SIGSTOP? i, e, is the sequence below valid?
SIGSTOP to process A : The process stops
SIGCONT to process A : Process resumes
SIGCONT to process A : Process already runs - this SIGCONT has no effect
SIGCONT to process A : Process already runs - this SIGCONT has no effect
...
SIGSTOP to process A : The process stops
SIGCONT to process A : Process resumes
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