mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-14 02:06:16 +02:00
43 lines
808 B
C++
43 lines
808 B
C++
#pragma once
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#include <thread>
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#include <atomic>
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#include <cstdlib>
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#include <poll.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <signal.h>
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namespace nix {
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class MonitorFdHup
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{
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private:
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std::thread thread;
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public:
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MonitorFdHup(int fd)
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{
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thread = std::thread([fd]() {
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/* Wait indefinitely until a POLLHUP occurs. */
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struct pollfd fds[1];
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fds[0].fd = fd;
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fds[0].events = 0;
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if (poll(fds, 1, -1) == -1) abort(); // can't happen
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assert(fds[0].revents & POLLHUP);
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/* We got POLLHUP, so send an INT signal to the main thread. */
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kill(getpid(), SIGINT);
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});
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};
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~MonitorFdHup()
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{
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pthread_cancel(thread.native_handle());
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thread.join();
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}
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};
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}
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