cimple - My little CI system (hopefully)

	Commit message (Collapse)	Author	Age
*	tcp_server: keep track of client threads	Egor Tensin	2023-07-05
\| \| \| \| \| \| \|	This is a major change, obviously; brought to me by Valgrind, which noticed that we don't actually clean up after cimple-client threads. For a more thorough explanation, please see the added comment in tcp_server.c.
*	fix function names in error messages	Egor Tensin	2023-06-30
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*	log: support logging levels	Egor Tensin	2023-06-28
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*	event_loop: support more event types	Egor Tensin	2023-06-13
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*	event_loop: add event_loop_add_once	Egor Tensin	2023-06-13
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*	event_loop: hide the API details	Egor Tensin	2023-06-13
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*	use signalfd to stop on SIGTERM	Egor Tensin	2023-06-13
	Is this an overkill? I don't know. The thing is, correctly intercepting SIGTERM (also SIGINT, etc.) is incredibly tricky. For example, before this commit, my I/O loops in server.c and worker.c were inherently racy. This was immediately obvious if you tried to run the tests. The tests (especially the Valgrind flavour) would run a worker, wait until it prints a "Waiting for a new command" line, and try to kill it using SIGTERM. The problem is, the global_stop_flag check could have already been executed by the worker, and it would hang forever in recv(). The solution seems to be to use signalfd and select()/poll(). I've never used either before, but it seems to work well enough - at least the very same tests pass and don't hang now.