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write

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Signed-off-by: Loris Cro <kappaloris@gmail.com>
This commit is contained in:
Loris Cro 2020-06-19 23:29:11 +02:00
parent 59ecdaea12
commit 9075f8e5a1
3 changed files with 32 additions and 23 deletions
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40
lib/std/event/loop.zig
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@ -956,23 +956,35 @@ pub const Loop = struct {
/// Performs an async `os.write` using a separate thread.
/// `fd` must block and not return EAGAIN.
pub fn write(self: *Loop, fd: os.fd_t, bytes: []const u8) os.WriteError!usize {
var req_node = Request.Node{
.data = .{
.msg = .{
.write = .{
.fd = fd,
.bytes = bytes,
.result = undefined,
pub fn write(self: *Loop, fd: os.fd_t, bytes: []const u8, simulate_evented: bool) os.WriteError!usize {
if (simulate_evented) {
var req_node = Request.Node{
.data = .{
.msg = .{
.write = .{
.fd = fd,
.bytes = bytes,
.result = undefined,
},
},
.finish = .{ .TickNode = .{ .data = @frame() } },
},
.finish = .{ .TickNode = .{ .data = @frame() } },
},
};
suspend {
self.posixFsRequest(&req_node);
};
suspend {
self.posixFsRequest(&req_node);
}
return req_node.data.msg.write.result;
} else {
while (true) {
return os.write(fd, bytes) catch |err| switch (err) {
error.WouldBlock => {
self.waitUntilFdWritable(fd);
continue;
},
else => return err,
};
}
}
return req_node.data.msg.write.result;
}
/// Performs an async `os.writev` using a separate thread.

8
lib/std/fs/file.zig
View File

@ -547,10 +547,12 @@ pub const File = struct {
pub fn write(self: File, bytes: []const u8) WriteError!usize {
if (is_windows) {
return windows.WriteFile(self.handle, bytes, null, self.intended_io_mode);
} else if (self.capable_io_mode != self.intended_io_mode) {
return std.event.Loop.instance.?.write(self.handle, bytes);
} else {
}
if (self.intended_io_mode == .blocking) {
return os.write(self.handle, bytes);
} else {
return std.event.Loop.instance.?.write(self.handle, bytes, self.capable_io_mode != self.intended_io_mode);
}
}

7
lib/std/os.zig
View File

@ -721,12 +721,7 @@ pub fn write(fd: fd_t, bytes: []const u8) WriteError!usize {
EINTR => continue,
EINVAL => unreachable,
EFAULT => unreachable,
EAGAIN => if (std.event.Loop.instance) |loop| {
loop.waitUntilFdWritable(fd);
continue;
} else {
return error.WouldBlock;
},
EAGAIN => return error.WouldBlock,
EBADF => return error.NotOpenForWriting, // can be a race condition.
EDESTADDRREQ => unreachable, // `connect` was never called.
EDQUOT => return error.DiskQuota,