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std.Io.Kqueue: implement netRead

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This commit is contained in:
Andrew Kelley 2025-10-23 04:27:20 -07:00
parent 1b0dcd4007
commit 0497f88d39
1 changed files with 41 additions and 6 deletions
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47
lib/std/Io/Kqueue.zig
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@ -24,6 +24,7 @@ const idle_stack_size = 256 * 1024;
const max_idle_search = 4;
const max_steal_ready_search = 4;
const max_iovecs_len = 8;
const changes_buffer_len = 64;
@ -1431,13 +1432,47 @@ fn netReceive(
_ = timeout;
@panic("TODO");
}
fn netRead(userdata: ?*anyopaque, src: net.Socket.Handle, data: [][]u8) net.Stream.Reader.Error!usize {
fn netRead(userdata: ?*anyopaque, fd: net.Socket.Handle, data: [][]u8) net.Stream.Reader.Error!usize {
const k: *Kqueue = @ptrCast(@alignCast(userdata));
_ = k;
_ = src;
_ = data;
@panic("TODO");
var iovecs_buffer: [max_iovecs_len]posix.iovec = undefined;
var i: usize = 0;
for (data) |buf| {
if (iovecs_buffer.len - i == 0) break;
if (buf.len != 0) {
iovecs_buffer[i] = .{ .base = buf.ptr, .len = buf.len };
i += 1;
}
}
const dest = iovecs_buffer[0..i];
assert(dest[0].len > 0);
while (true) {
try k.checkCancel();
std.debug.print("calling readv\n", .{});
const rc = posix.system.readv(fd, dest.ptr, @intCast(dest.len));
switch (posix.errno(rc)) {
.SUCCESS => return @intCast(rc),
.INTR => continue,
.CANCELED => return error.Canceled,
.AGAIN => @panic("TODO"),
.INVAL => |err| return errnoBug(err),
.FAULT => |err| return errnoBug(err),
.BADF => |err| return errnoBug(err), // File descriptor used after closed.
.NOBUFS => return error.SystemResources,
.NOMEM => return error.SystemResources,
.NOTCONN => return error.SocketUnconnected,
.CONNRESET => return error.ConnectionResetByPeer,
.TIMEDOUT => return error.Timeout,
.PIPE => return error.SocketUnconnected,
.NETDOWN => return error.NetworkDown,
else => |err| return posix.unexpectedErrno(err),
}
}
}
fn netWrite(userdata: ?*anyopaque, dest: net.Socket.Handle, header: []const u8, data: []const []const u8, splat: usize) net.Stream.Writer.Error!usize {
const k: *Kqueue = @ptrCast(@alignCast(userdata));
_ = k;
@ -1529,7 +1564,7 @@ fn openSocketPosix(
else => |err| return posix.unexpectedErrno(err),
}
};
fl_flags &= ~@as(usize, 1 << @bitOffsetOf(posix.O, "NONBLOCK"));
fl_flags |= @as(usize, 1 << @bitOffsetOf(posix.O, "NONBLOCK"));
while (true) {
try k.checkCancel();
switch (posix.errno(posix.system.fcntl(fd, posix.F.SETFL, fl_flags))) {