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std.Io.Kqueue: implement EAGAIN logic for netRead

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This commit is contained in:
Andrew Kelley 2025-10-23 04:46:00 -07:00
parent 0497f88d39
commit cc11dd1f87
1 changed files with 19 additions and 1 deletions
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20
lib/std/Io/Kqueue.zig
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@ -1456,7 +1456,25 @@ fn netRead(userdata: ?*anyopaque, fd: net.Socket.Handle, data: [][]u8) net.Strea
.SUCCESS => return @intCast(rc),
.INTR => continue,
.CANCELED => return error.Canceled,
.AGAIN => @panic("TODO"),
.AGAIN => {
const thread: *Thread = .current();
const fiber = thread.currentFiber();
const changes = [_]posix.Kevent{
.{
.ident = @as(u32, @bitCast(fd)),
.filter = std.c.EVFILT.READ,
.flags = std.c.EV.ADD | std.c.EV.ONESHOT,
.fflags = 0,
.data = 0,
.udata = @intFromPtr(fiber),
},
};
assert(0 == (posix.kevent(thread.kq_fd, &changes, &.{}, null) catch |err| {
@panic(@errorName(err)); // TODO
}));
yield(k, null, .nothing);
continue;
},
.INVAL => |err| return errnoBug(err),
.FAULT => |err| return errnoBug(err),