Process::SubProcess::Group::Wait() Method fails with Timeout

[domibay-hugo]

The Method Process::SubProcess::Group::Wait() fails with Timeout Error when the child processes in Process::SubProcess::Group were not launched with the Method Process::SubProcess::Group::Launch()

[domibay-hugo]

I wrote a Test Sequence in test_group.t to demonstrate this behaviour:

$ ./test_group.t
[...]
Test: 'Process::SubProcess::Group::Wait() Method' do ...
ok 46 - Profiling activated
ok 47 - Profiling activated
ok 48 - Profiling activated
ok 49 - scripts (count: '3'): added correctly
ok 50 - Check Interval activated
ok 51 - Execution Timeout activated
Process Group Execution Start - Time Now: '1612452392.11664' s
ok 52 - Process No. '0': Listed correctly
ok 53 - Process No. '0': Launch succeeded
ok 54 - Process No. '1': Listed correctly
ok 55 - Process No. '1': Launch succeeded
ok 56 - Process No. '2': Listed correctly
ok 57 - Process No. '2': Launch succeeded
ok 58 - Process Group Execution: All Processes are launched
ok 59 - Process Group Execution: Execution failed as expected
Process Group Execution End - Time Now: '1612452394.1369' s
Process Group Execution finished in '2020.26510238647' ms
Process Group ERROR CODE: '4'
ok 60 - Process Group Execution: ERROR CODE is correct
Process Group STDOUT: ''
Process Group STDERR: 'Sub Processes 'Count: 1': Execution timed out!
Execution Time '1612452395 / 7'
Processes will be terminated.
Sub Processes: Processes terminating ...
'
ok 61 - Process No. '0': Listed correctly
Process (27761) 'test-script:3s' finished with [4]:
ERROR CODE: '4'
EXIT CODE: '-1'
ok 62 - Execution Time not measured as expected
Read Timeout: '2'
Execution Time: '-1'
STDOUT: ''
STDERR: 'script 'test_script.pl' START 0 ERROR
Sub Process (27761) 'test-script:3s': Process terminating ...
'
ok 63 - Process No. '1': Listed correctly
Process (27762) 'test-script:5s' finished with [4]:
ERROR CODE: '4'
EXIT CODE: '-1'
ok 64 - Execution Time not measured as expected
Read Timeout: '2'
Execution Time: '-1'
STDOUT: ''
STDERR: 'Sub Process (27762) 'test-script:5s': Process terminating ...
script 'test_script.pl' START 0 ERROR
'
ok 65 - Process No. '2': Listed correctly
Process (27763) 'test-script:13s' finished with [4]:
ERROR CODE: '4'
EXIT CODE: '-1'
ok 66 - Execution Time not measured as expected
Read Timeout: '2'
Execution Time: '-1'
STDOUT: ''
STDERR: 'Sub Process (27763) 'test-script:13s': Process terminating ...
script 'test_script.pl' START 0 ERROR
'
not ok 67 - '1' Process timed out as expected
#   Failed test ''1' Process timed out as expected'
#   at ./test_group.t line 641.
#          got: '3'
#     expected: '1'
Process Group Execution Timeout - Count: '3'

1..67
# Looks like you failed 1 test of 67.

When the child processes are launched seperately the Method Process::SubProcess::Group::Wait() is unable to recognize the start time and finishes all processes as timed out

[bodo-hugo-barwich]

The test in the Pull Request documents that the issue is mitigated.
But I think there are still more implication for the demonstrated Use Case

[bodo-hugo-barwich]

For better synchronisation the Process::SubProcess must expose its Start Time which than can be used to re-synchronise the Process::SubProcess::Group Start Time this should then make the Process::SubProcess::Group::Wait() method more reliable.