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kill_signal1
2020 May 14
1
system(timeout=) may timeout with 0 exit code
Hi R developers,
I observed that system(timeout=) may still return exit code 0, when
killing the process due to timeout.
In src/unix/sys-unix.c there is
#define KILL_SIGNAL1 SIGINT
#define KILL_SIGNAL2 SIGTERM
#define KILL_SIGNAL3 SIGKILL
#define EMERGENCY_TIMEOUT 20
After little bit of debugging I observed that total time of system
call is provided timeout value + 20s. That means EMERGENCY_TIMEOUT 20
kicked in, adding 20 seconds.
I don't have a reproducible example, but following code, and output
file below should be...