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MEDIUM: signal: signal_unregister() removes every handlers
The new function signal_unregister() removes every handlers assigned to a signal. Once the handler list of the signal is empty, the signal is ignored with SIG_IGN.
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db6bdfbf68
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@ -32,6 +32,7 @@ struct sig_handler *signal_register_fct(int sig, void (*fct)(struct sig_handler
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struct sig_handler *signal_register_task(int sig, struct task *task, int reason);
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void signal_unregister_handler(struct sig_handler *handler);
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void signal_unregister_target(int sig, void *target);
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void signal_unregister(int sig);
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void haproxy_unblock_signals();
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static inline void signal_process_queue()
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20
src/signal.c
20
src/signal.c
@ -254,3 +254,23 @@ void signal_unregister_target(int sig, void *target)
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}
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}
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}
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/*
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* Immedialtely unregister every handler assigned to a signal <sig>.
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* Once the handler list is empty, the signal is ignored with SIG_IGN.
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*/
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void signal_unregister(int sig)
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{
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struct sig_handler *sh, *shb;
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if (sig < 0 || sig >= MAX_SIGNAL)
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return;
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list_for_each_entry_safe(sh, shb, &signal_state[sig].handlers, list) {
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LIST_DEL(&sh->list);
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pool_free(pool_head_sig_handlers, sh);
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}
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signal(sig, SIG_IGN);
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}
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