LemonBoy dc810eb73b std: Avoid deadlocking in ChildProcess.exec ...

Reading stdin&stderr at different times may lead to nasty deadlocks (eg.
when stdout is read before stderr and the child process doesn't write
anything onto stdout).

Implement a polling mechanism to make sure this won't happen: we read
data from stderr/stdout as it becomes ready and then it's copied into an
ArrayList provided by the user, avoiding any kind of blocking read.

2020-12-29 10:40:00 -07:00

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