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win,tty: support uv_try_write

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All windows console writes are synchronous anyway, so there's no reason
for uv_try_write() to do nothing.

PR: https://github.com/libuv/libuv/pull/127
Reviewed-by: Saúl Ibarra Corretgé <saghul@gmail.com>
This commit is contained in:
Bert Belder 2015-01-12 22:35:34 +01:00
parent 85a293430f
commit 55ea37125e
3 changed files with 18 additions and 0 deletions
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2
src/win/internal.h
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@ -213,6 +213,8 @@ int uv_tty_read_start(uv_tty_t* handle, uv_alloc_cb alloc_cb,
int uv_tty_read_stop(uv_tty_t* handle);
int uv_tty_write(uv_loop_t* loop, uv_write_t* req, uv_tty_t* handle,
const uv_buf_t bufs[], unsigned int nbufs, uv_write_cb cb);
int uv__tty_try_write(uv_tty_t* handle, const uv_buf_t bufs[],
unsigned int nbufs);
void uv_tty_close(uv_tty_t* handle);
void uv_process_tty_read_req(uv_loop_t* loop, uv_tty_t* handle,

1
src/win/stream.c
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@ -193,6 +193,7 @@ int uv_try_write(uv_stream_t* stream,
case UV_TCP:
return uv__tcp_try_write((uv_tcp_t*) stream, bufs, nbufs);
case UV_TTY:
return uv__tty_try_write((uv_tty_t*) stream, bufs, nbufs);
case UV_NAMED_PIPE:
return UV_EAGAIN;
default:

15
src/win/tty.c
View File

@ -1878,6 +1878,21 @@ int uv_tty_write(uv_loop_t* loop,
}
int uv__tty_try_write(uv_tty_t* handle,
const uv_buf_t bufs[],
unsigned int nbufs) {
DWORD error;
if (handle->write_reqs_pending > 0)
return UV_EAGAIN;
if (uv_tty_write_bufs(handle, bufs, nbufs, &error))
return uv_translate_sys_error(error);
return uv__count_bufs(bufs, nbufs);
}
void uv_process_tty_write_req(uv_loop_t* loop, uv_tty_t* handle,
uv_write_t* req) {
int err;