int uv_tty_read_start(uv_tty_t* handle, uv_alloc_cb alloc_cb,
uv_read_cb read_cb) {
uv_loop_t* loop = handle->loop;
handle->flags |= UV_HANDLE_READING;
handle->read_cb = read_cb;
handle->alloc_cb = alloc_cb;
/* If reading was stopped and then started again, there could stell be a */
/* read request pending. */
if (handle->flags & UV_HANDLE_READ_PENDING) {
return 0;
}
/* Maybe the user stopped reading half-way while processing key events. */
/* Short-circuit if this could be the case. */
if (handle->last_key_len > 0) {
SET_REQ_SUCCESS(&handle->read_req);
uv_insert_pending_req(handle->loop, (uv_req_t*) &handle->read_req);
return -1;
}
uv_tty_queue_read(loop, handle);
return 0;
}
static void uv_pipe_queue_accept(uv_pipe_t* handle, uv_pipe_accept_t* req, BOOL firstInstance) {
assert(handle->flags & UV_HANDLE_LISTENING);
if (!firstInstance) {
assert(req->pipeHandle == INVALID_HANDLE_VALUE);
req->pipeHandle = CreateNamedPipeW(handle->name,
PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | PIPE_WAIT,
PIPE_UNLIMITED_INSTANCES,
65536,
65536,
0,
NULL);
if (req->pipeHandle == INVALID_HANDLE_VALUE) {
SET_REQ_ERROR(req, GetLastError());
uv_insert_pending_req((uv_req_t*) req);
handle->reqs_pending++;
return;
}
if (uv_set_pipe_handle(handle, req->pipeHandle)) {
CloseHandle(req->pipeHandle);
req->pipeHandle = INVALID_HANDLE_VALUE;
SET_REQ_ERROR(req, GetLastError());
uv_insert_pending_req((uv_req_t*) req);
handle->reqs_pending++;
return;
}
}
assert(req->pipeHandle != INVALID_HANDLE_VALUE);
/* Prepare the overlapped structure. */
memset(&(req->overlapped), 0, sizeof(req->overlapped));
if (!ConnectNamedPipe(req->pipeHandle, &req->overlapped) && GetLastError() != ERROR_IO_PENDING) {
if (GetLastError() == ERROR_PIPE_CONNECTED) {
SET_REQ_SUCCESS(req);
} else {
CloseHandle(req->pipeHandle);
req->pipeHandle = INVALID_HANDLE_VALUE;
/* Make this req pending reporting an error. */
SET_REQ_ERROR(req, GetLastError());
}
uv_insert_pending_req((uv_req_t*) req);
handle->reqs_pending++;
return;
}
handle->reqs_pending++;
}
static DWORD WINAPI pipe_connect_thread_proc(void* parameter) {
HANDLE pipeHandle = INVALID_HANDLE_VALUE;
int errno;
uv_loop_t* loop;
uv_pipe_t* handle;
uv_connect_t* req;
req = (uv_connect_t*) parameter;
assert(req);
handle = (uv_pipe_t*) req->handle;
assert(handle);
loop = handle->loop;
assert(loop);
/* We're here because CreateFile on a pipe returned ERROR_PIPE_BUSY. */
/* We wait for the pipe to become available with WaitNamedPipe. */
while (WaitNamedPipeW(handle->name, 30000)) {
/* The pipe is now available, try to connect. */
pipeHandle = CreateFileW(handle->name,
GENERIC_READ | GENERIC_WRITE,
0,
NULL,
OPEN_EXISTING,
FILE_FLAG_OVERLAPPED,
NULL);
if (pipeHandle != INVALID_HANDLE_VALUE) {
break;
}
SwitchToThread();
}
if (pipeHandle != INVALID_HANDLE_VALUE &&
!uv_set_pipe_handle(loop, handle, pipeHandle)) {
handle->handle = pipeHandle;
SET_REQ_SUCCESS(req);
} else {
SET_REQ_ERROR(req, GetLastError());
}
/* Post completed */
POST_COMPLETION_FOR_REQ(loop, req);
return 0;
}
static void CALLBACK uv_tty_post_raw_read(void* data, BOOLEAN didTimeout) {
uv_loop_t* loop;
uv_tty_t* handle;
uv_req_t* req;
assert(data);
assert(!didTimeout);
req = (uv_req_t*) data;
handle = (uv_tty_t*) req->data;
loop = handle->loop;
UnregisterWait(handle->read_raw_wait);
handle->read_raw_wait = NULL;
SET_REQ_SUCCESS(req);
POST_COMPLETION_FOR_REQ(loop, req);
}
static DWORD WINAPI pipe_connect_thread_proc(void* parameter) {
uv_loop_t* loop;
uv_pipe_t* handle;
uv_connect_t* req;
HANDLE pipeHandle = INVALID_HANDLE_VALUE;
DWORD duplex_flags;
req = (uv_connect_t*) parameter;
assert(req);
handle = (uv_pipe_t*) req->handle;
assert(handle);
loop = handle->loop;
assert(loop);
/* We're here because CreateFile on a pipe returned ERROR_PIPE_BUSY. */
/* We wait for the pipe to become available with WaitNamedPipe. */
while (WaitNamedPipeW(handle->name, 30000)) {
/* The pipe is now available, try to connect. */
pipeHandle = open_named_pipe(handle->name, &duplex_flags);
if (pipeHandle != INVALID_HANDLE_VALUE) {
break;
}
SwitchToThread();
}
if (pipeHandle != INVALID_HANDLE_VALUE &&
!uv_set_pipe_handle(loop, handle, pipeHandle, duplex_flags)) {
SET_REQ_SUCCESS(req);
} else {
SET_REQ_ERROR(req, GetLastError());
}
/* Post completed */
POST_COMPLETION_FOR_REQ(loop, req);
return 0;
}
static DWORD CALLBACK uv_tty_line_read_thread(void* data) {
uv_loop_t* loop;
uv_tty_t* handle;
uv_req_t* req;
DWORD bytes, read_bytes;
assert(data);
req = (uv_req_t*) data;
handle = (uv_tty_t*) req->data;
loop = handle->loop;
assert(handle->read_line_buffer.base != NULL);
assert(handle->read_line_buffer.len > 0);
/* ReadConsole can't handle big buffers. */
if (handle->read_line_buffer.len < 8192) {
bytes = handle->read_line_buffer.len;
} else {
bytes = 8192;
}
/* Todo: Unicode */
if (ReadConsoleA(handle->read_line_handle,
(void*) handle->read_line_buffer.base,
bytes,
&read_bytes,
NULL)) {
SET_REQ_SUCCESS(req);
req->overlapped.InternalHigh = read_bytes;
} else {
SET_REQ_ERROR(req, GetLastError());
}
POST_COMPLETION_FOR_REQ(loop, req);
return 0;
}
void uv_req_init(uv_loop_t* loop, uv_req_t* req) {
loop->counters.req_init++;
req->type = UV_UNKNOWN_REQ;
SET_REQ_SUCCESS(req);
}
static DWORD WINAPI uv__slow_poll_thread_proc(void* arg) {
uv_req_t* req = (uv_req_t*) arg;
uv_poll_t* handle = (uv_poll_t*) req->data;
unsigned char events, reported_events;
int r;
uv_single_fd_set_t rfds, wfds, efds;
struct timeval timeout;
assert(handle->type == UV_POLL);
assert(req->type == UV_POLL_REQ);
if (req == &handle->poll_req_1) {
events = handle->submitted_events_1;
} else if (req == &handle->poll_req_2) {
events = handle->submitted_events_2;
} else {
assert(0);
}
if (handle->events & UV_READABLE) {
rfds.fd_count = 1;
rfds.fd_array[0] = handle->socket;
} else {
rfds.fd_count = 0;
}
if (handle->events & UV_WRITABLE) {
wfds.fd_count = 1;
wfds.fd_array[0] = handle->socket;
efds.fd_count = 1;
efds.fd_array[0] = handle->socket;
} else {
wfds.fd_count = 0;
efds.fd_count = 0;
}
/* Make the select() time out after 3 minutes. If select() hangs because */
/* the user closed the socket, we will at least not hang indefinitely. */
timeout.tv_sec = 3 * 60;
timeout.tv_usec = 0;
r = select(1, (fd_set*) &rfds, (fd_set*) &wfds, (fd_set*) &efds, &timeout);
if (r == SOCKET_ERROR) {
/* Queue this req, reporting an error. */
SET_REQ_ERROR(&handle->poll_req_1, WSAGetLastError());
POST_COMPLETION_FOR_REQ(handle->loop, req);
return 0;
}
reported_events = 0;
if (r > 0) {
if (rfds.fd_count > 0) {
assert(rfds.fd_count == 1);
assert(rfds.fd_array[0] == handle->socket);
reported_events |= UV_READABLE;
}
if (wfds.fd_count > 0) {
assert(wfds.fd_count == 1);
assert(wfds.fd_array[0] == handle->socket);
reported_events |= UV_WRITABLE;
} else if (efds.fd_count > 0) {
assert(efds.fd_count == 1);
assert(efds.fd_array[0] == handle->socket);
reported_events |= UV_WRITABLE;
}
}
SET_REQ_SUCCESS(req);
req->overlapped.InternalHigh = (DWORD) reported_events;
POST_COMPLETION_FOR_REQ(handle->loop, req);
return 0;
}
void uv_pipe_connect(uv_connect_t* req, uv_pipe_t* handle,
const char* name, uv_connect_cb cb) {
uv_loop_t* loop = handle->loop;
int errorno, nameSize;
HANDLE pipeHandle = INVALID_HANDLE_VALUE;
DWORD duplex_flags;
uv_req_init(loop, (uv_req_t*) req);
req->type = UV_CONNECT;
req->handle = (uv_stream_t*) handle;
req->cb = cb;
/* Convert name to UTF16. */
nameSize = uv_utf8_to_utf16(name, NULL, 0) * sizeof(WCHAR);
handle->name = (WCHAR*)malloc(nameSize);
if (!handle->name) {
uv_fatal_error(ERROR_OUTOFMEMORY, "malloc");
}
if (!uv_utf8_to_utf16(name, handle->name, nameSize / sizeof(WCHAR))) {
errorno = GetLastError();
goto error;
}
pipeHandle = open_named_pipe(handle->name, &duplex_flags);
if (pipeHandle == INVALID_HANDLE_VALUE) {
if (GetLastError() == ERROR_PIPE_BUSY) {
/* Wait for the server to make a pipe instance available. */
if (!QueueUserWorkItem(&pipe_connect_thread_proc,
req,
WT_EXECUTELONGFUNCTION)) {
errorno = GetLastError();
goto error;
}
REGISTER_HANDLE_REQ(loop, handle, req);
handle->reqs_pending++;
return;
}
errorno = GetLastError();
goto error;
}
assert(pipeHandle != INVALID_HANDLE_VALUE);
if (uv_set_pipe_handle(loop,
(uv_pipe_t*) req->handle,
pipeHandle,
duplex_flags)) {
errorno = GetLastError();
goto error;
}
SET_REQ_SUCCESS(req);
uv_insert_pending_req(loop, (uv_req_t*) req);
handle->reqs_pending++;
REGISTER_HANDLE_REQ(loop, handle, req);
return;
error:
if (handle->name) {
free(handle->name);
handle->name = NULL;
}
if (pipeHandle != INVALID_HANDLE_VALUE) {
CloseHandle(pipeHandle);
}
/* Make this req pending reporting an error. */
SET_REQ_ERROR(req, errorno);
uv_insert_pending_req(loop, (uv_req_t*) req);
handle->reqs_pending++;
REGISTER_HANDLE_REQ(loop, handle, req);
return;
}
void uv_pipe_connect(uv_connect_t* req, uv_pipe_t* handle,
const char* name, uv_connect_cb cb) {
uv_loop_t* loop = handle->loop;
int errno, nameSize;
HANDLE pipeHandle;
handle->handle = INVALID_HANDLE_VALUE;
uv_req_init(loop, (uv_req_t*) req);
req->type = UV_CONNECT;
req->handle = (uv_stream_t*) handle;
req->cb = cb;
/* Convert name to UTF16. */
nameSize = uv_utf8_to_utf16(name, NULL, 0) * sizeof(wchar_t);
handle->name = (wchar_t*)malloc(nameSize);
if (!handle->name) {
uv_fatal_error(ERROR_OUTOFMEMORY, "malloc");
}
if (!uv_utf8_to_utf16(name, handle->name, nameSize / sizeof(wchar_t))) {
errno = GetLastError();
goto error;
}
pipeHandle = CreateFileW(handle->name,
GENERIC_READ | GENERIC_WRITE,
0,
NULL,
OPEN_EXISTING,
FILE_FLAG_OVERLAPPED,
NULL);
if (pipeHandle == INVALID_HANDLE_VALUE) {
if (GetLastError() == ERROR_PIPE_BUSY) {
/* Wait for the server to make a pipe instance available. */
if (!QueueUserWorkItem(&pipe_connect_thread_proc,
req,
WT_EXECUTELONGFUNCTION)) {
errno = GetLastError();
goto error;
}
handle->reqs_pending++;
return;
}
errno = GetLastError();
goto error;
}
if (uv_set_pipe_handle(loop, (uv_pipe_t*)req->handle, pipeHandle)) {
errno = GetLastError();
goto error;
}
handle->handle = pipeHandle;
SET_REQ_SUCCESS(req);
uv_insert_pending_req(loop, (uv_req_t*) req);
handle->reqs_pending++;
return;
error:
if (handle->name) {
free(handle->name);
handle->name = NULL;
}
if (pipeHandle != INVALID_HANDLE_VALUE) {
CloseHandle(pipeHandle);
}
/* Make this req pending reporting an error. */
SET_REQ_ERROR(req, errno);
uv_insert_pending_req(loop, (uv_req_t*) req);
handle->reqs_pending++;
return;
}
void uv_pipe_connect(uv_connect_t* req, uv_pipe_t* handle,
const char* name, uv_connect_cb cb) {
uv_loop_t* loop = handle->loop;
int errno, nameSize;
handle->handle = INVALID_HANDLE_VALUE;
uv_req_init(loop, (uv_req_t*) req);
req->type = UV_CONNECT;
req->handle = (uv_stream_t*) handle;
req->cb = cb;
/* Convert name to UTF16. */
nameSize = uv_utf8_to_utf16(name, NULL, 0) * sizeof(wchar_t);
handle->name = (wchar_t*)malloc(nameSize);
if (!handle->name) {
uv_fatal_error(ERROR_OUTOFMEMORY, "malloc");
}
if (!uv_utf8_to_utf16(name, handle->name, nameSize / sizeof(wchar_t))) {
errno = GetLastError();
goto error;
}
if (open_named_pipe(handle) != 0) {
if (GetLastError() == ERROR_PIPE_BUSY) {
/* Wait for the server to make a pipe instance available. */
if (!QueueUserWorkItem(&pipe_connect_thread_proc,
req,
WT_EXECUTELONGFUNCTION)) {
errno = GetLastError();
goto error;
}
handle->reqs_pending++;
return;
}
errno = GetLastError();
goto error;
}
assert(handle->handle != INVALID_HANDLE_VALUE);
/* Ensure that what we just opened is actually a pipe */
if (!GetNamedPipeInfo(handle->handle, NULL, NULL, NULL, NULL)) {
errno = WSAENOTSOCK;
goto error;
}
if (uv_set_pipe_handle(loop, (uv_pipe_t*)req->handle, handle->handle)) {
errno = GetLastError();
goto error;
}
SET_REQ_SUCCESS(req);
uv_insert_pending_req(loop, (uv_req_t*) req);
handle->reqs_pending++;
return;
error:
if (handle->name) {
free(handle->name);
handle->name = NULL;
}
if (handle->handle != INVALID_HANDLE_VALUE) {
CloseHandle(handle->handle);
handle->handle = INVALID_HANDLE_VALUE;
}
/* Make this req pending reporting an error. */
SET_REQ_ERROR(req, errno);
uv_insert_pending_req(loop, (uv_req_t*) req);
handle->reqs_pending++;
return;
}
