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Only enable SIGCHLD on main thread.

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This commit is contained in:
Jari Sundell
2026-06-21 16:05:16 +02:00
committed by GitHub
parent 8249070ff1
commit 59fe93515e
4 changed files with 51 additions and 41 deletions
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src/signal_handler.cc
+29
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@@ -42,6 +42,7 @@ SignalHandler::set_handler(unsigned int signum, slot_void slot) {
throw std::logic_error("SignalHandler::set_handler(...) received an empty slot.");
struct sigaction sa;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART;
sa.sa_handler = &SignalHandler::caught;
@@ -52,6 +53,34 @@ SignalHandler::set_handler(unsigned int signum, slot_void slot) {
m_handlers[signum] = slot;
}
void
SignalHandler::set_block(unsigned int signum) {
if (signum >= HIGHEST_SIGNAL)
throw std::logic_error("SignalHandler::set_block(...) received invalid signal value.");
sigset_t mask;
sigemptyset(&mask);
sigaddset(&mask, signum);
if (pthread_sigmask(SIG_BLOCK, &mask, NULL) == -1)
throw std::logic_error("Could not block signal: " + std::string(std::strerror(errno)));
}
void
SignalHandler::set_unblock(unsigned int signum) {
if (signum >= HIGHEST_SIGNAL)
throw std::logic_error("SignalHandler::set_unblock(...) received invalid signal value.");
sigset_t mask;
sigemptyset(&mask);
sigaddset(&mask, signum);
if (pthread_sigmask(SIG_UNBLOCK, &mask, NULL) == -1)
throw std::logic_error("Could not unblock signal: " + std::string(std::strerror(errno)));
}
void
SignalHandler::set_sigaction_handler(unsigned int signum, handler_slot slot) {
if (signum >= HIGHEST_SIGNAL)