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LibCore: Stop select()'ing after an interrupt if a quit was requested

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This allows signal handlers to request the loop to terminate.
This commit is contained in:
AnotherTest 2020-06-17 12:27:48 +04:30 • committed by Andreas Kling
parent 0f6c5783d3
commit 6f7ac5d2e2
Notes: sideshowbarker 2024-07-19 05:09:48 +09:00
1 changed files with 15 additions and 1 deletions
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16
Libraries/LibCore/EventLoop.cpp
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@ -461,7 +461,21 @@ void EventLoop::wait_for_event(WaitMode mode)
}
}
int marked_fd_count = Core::safe_syscall(select, max_fd + 1, &rfds, &wfds, nullptr, should_wait_forever ? nullptr : &timeout);
try_select_again:;
int marked_fd_count = select(max_fd + 1, &rfds, &wfds, nullptr, should_wait_forever ? nullptr : &timeout);
if (marked_fd_count < 0) {
int saved_errno = errno;
if (saved_errno == EINTR) {
if (m_exit_requested)
return;
goto try_select_again;
}
#ifdef EVENTLOOP_DEBUG
dbg() << "Core::EventLoop::wait_for_event: " << marked_fd_count << " (" << saved_errno << ": " << strerror(saved_errno) << ")";
#endif
// Blow up, similar to Core::safe_syscall.
ASSERT_NOT_REACHED();
}
if (FD_ISSET(s_wake_pipe_fds[0], &rfds)) {
char buffer[32];
auto nread = read(s_wake_pipe_fds[0], buffer, sizeof(buffer));