Cleanup children in prefork mode, annotate NORETURN to fix implicit fallthrough
#60
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With warnings and pedantic mode enabled, `gcc (GCC) 13.2.1` returns an implicit fall through warning. This can be fixed by annotating the error function with NORETURN.
Remove close as it always results in a duplicated call, simplify logic
When attached to a terminal, a SIGINT signal is sent to the parent and all children, instructing them to exit. In some environments including docker, only the parent receives the SIGTERM and is responsible for propagating it to the children. This patch kills all child processes when the parent receives a SIGTERM or a SIGINT.
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Oh, and it resolves #28 |
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This PR primarily addresses issue #19, although it tackles other issues as well. When the
preforkoption is specified via the command line, the initial process spawns a set number of child processes within a control loop. While there is a provision to reap these child processes upon their exit, the master process currently lacks a mechanism to notify them to terminate when it receives aSIGTERMorSIGINT. This behavior can be problematic due to variations in how different init systems and third-party managers handle program management. For example,systemdin its default configuration sendsSIGTERMsignals to all processes in the control group. However, this is not universally true; Docker, for instance, sends aSIGTERMonly to the process specified in theENTRYPOINTinstruction.Key Fixes and Improvements:
NORETURNannotation as a cleaner solution. This change was necessary for successful compilation.SIGTERMsignals to all processes in the process group upon its exit, thereby ensuring graceful termination.I'm up and running with these patches but have not tested this extensively. If maintainers consider merging this, I will follow up. I welcome community feedback.