fabianhjr/lix
0
0
Fork 0
forked from lix-project/lix
Code Pull requests Activity

Merge pull request #7585 from NixOS/macos-disconnect

Browse source 
MonitorFdHup: Make it work on macOS again
This commit is contained in:
Eelco Dolstra 2023-01-16 13:30:15 +01:00 committed by GitHub
parent c133e66375 9fc8d00d74
commit 1df3d62c76
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 31 additions and 20 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

23
src/libutil/monitor-fd.hh
View file

@ -25,11 +25,17 @@ public:
/* Wait indefinitely until a POLLHUP occurs. */
struct pollfd fds[1];
fds[0].fd = fd;
/* This shouldn't be necessary, but macOS doesn't seem to
like a zeroed out events field.
See rdar://37537852.
*/
fds[0].events = POLLHUP;
/* Polling for no specific events (i.e. just waiting
for an error/hangup) doesn't work on macOS
anymore. So wait for read events and ignore
them. */
fds[0].events =
#ifdef __APPLE__
POLLRDNORM
#else
0
#endif
;
auto count = poll(fds, 1, -1);
if (count == -1) abort(); // can't happen
/* This shouldn't happen, but can on macOS due to a bug.
@ -40,10 +46,15 @@ public:
too harmful.
*/
if (count == 0) continue;
assert(fds[0].revents & POLLHUP);
if (fds[0].revents & POLLHUP) {
triggerInterrupt();
break;
}
/* This will only happen on macOS. We sleep a bit to
avoid waking up too often if the client is sending
input. */
sleep(1);
}
});
};