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Use pthread_cancel instead of a signal

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Signal handlers are process-wide, so sending SIGINT to the monitor
thread will cause the normal SIGINT handler to run. This sets the
isInterrupted flag, which is not what we want. So use pthread_cancel
instead.
This commit is contained in:
Eelco Dolstra 2014-07-24 11:47:51 +02:00
parent aa1560ca07
commit 0fae20c362
1 changed files with 2 additions and 5 deletions
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7
src/libutil/monitor-fd.hh
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@ -24,10 +24,7 @@ public:
struct pollfd fds[1]; struct pollfd fds[1];
fds[0].fd = fd; fds[0].fd = fd;
fds[0].events = 0; fds[0].events = 0;
if (poll(fds, 1, -1) == -1) { if (poll(fds, 1, -1) == -1) abort(); // can't happen
if (errno != EINTR) abort(); // can't happen
return; // destructor is asking us to exit
}
assert(fds[0].revents & POLLHUP); assert(fds[0].revents & POLLHUP);
/* We got POLLHUP, so send an INT signal to the main thread. */ /* We got POLLHUP, so send an INT signal to the main thread. */
kill(getpid(), SIGINT); kill(getpid(), SIGINT);
@ -36,7 +33,7 @@ public:
~MonitorFdHup() ~MonitorFdHup()
{ {
pthread_kill(thread.native_handle(), SIGINT); pthread_cancel(thread.native_handle());
thread.join(); thread.join();
} }
}; };