42 lines
1.4 KiB
C++
42 lines
1.4 KiB
C++
#include "utils/signals.hpp"
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namespace utils {
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bool SignalIgnore(const Signal signal) {
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int signal_number = static_cast<int>(signal);
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struct sigaction action;
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// `sa_sigaction` must be cleared before `sa_handler` is set because on some
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// platforms the two are a union.
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action.sa_sigaction = nullptr;
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action.sa_handler = SIG_IGN;
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sigemptyset(&action.sa_mask);
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action.sa_flags = 0;
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if (sigaction(signal_number, &action, NULL) == -1) return false;
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return true;
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}
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void SignalHandler::Handle(int signal) { handlers_[signal](); }
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bool SignalHandler::RegisterHandler(Signal signal, std::function<void()> func) {
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sigset_t signal_mask;
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sigemptyset(&signal_mask);
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return RegisterHandler(signal, func, signal_mask);
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}
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bool SignalHandler::RegisterHandler(Signal signal, std::function<void()> func, sigset_t signal_mask) {
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int signal_number = static_cast<int>(signal);
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handlers_[signal_number] = func;
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struct sigaction action;
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// `sa_sigaction` must be cleared before `sa_handler` is set because on some
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// platforms the two are a union.
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action.sa_sigaction = nullptr;
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action.sa_handler = SignalHandler::Handle;
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action.sa_mask = signal_mask;
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action.sa_flags = SA_RESTART;
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if (sigaction(signal_number, &action, NULL) == -1) return false;
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return true;
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}
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std::map<int, std::function<void()>> SignalHandler::handlers_ = {};
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} // namespace utils
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