1 /* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
2 *
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to
5 * deal in the Software without restriction, including without limitation the
6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
7 * sell copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
9 *
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
19 * IN THE SOFTWARE.
20 */
21
22 #ifndef UV_WIN_REQ_INL_H_
23 #define UV_WIN_REQ_INL_H_
24
25 #include <assert.h>
26
27 #include "uv.h"
28 #include "internal.h"
29
30
31 #define SET_REQ_STATUS(req, status) \
32 (req)->u.io.overlapped.Internal = (ULONG_PTR) (status)
33
34 #define SET_REQ_ERROR(req, error) \
35 SET_REQ_STATUS((req), NTSTATUS_FROM_WIN32((error)))
36
37 /* Note: used open-coded in UV_REQ_INIT() because of a circular dependency
38 * between src/uv-common.h and src/win/internal.h.
39 */
40 #define SET_REQ_SUCCESS(req) \
41 SET_REQ_STATUS((req), STATUS_SUCCESS)
42
43 #define GET_REQ_STATUS(req) \
44 ((NTSTATUS) (req)->u.io.overlapped.Internal)
45
46 #define REQ_SUCCESS(req) \
47 (NT_SUCCESS(GET_REQ_STATUS((req))))
48
49 #define GET_REQ_ERROR(req) \
50 (pRtlNtStatusToDosError(GET_REQ_STATUS((req))))
51
52 #define GET_REQ_SOCK_ERROR(req) \
53 (uv__ntstatus_to_winsock_error(GET_REQ_STATUS((req))))
54
55
56 #define REGISTER_HANDLE_REQ(loop, handle) \
57 do { \
58 INCREASE_ACTIVE_COUNT((loop), (handle)); \
59 uv__req_register((loop)); \
60 } while (0)
61
62 #define UNREGISTER_HANDLE_REQ(loop, handle) \
63 do { \
64 DECREASE_ACTIVE_COUNT((loop), (handle)); \
65 uv__req_unregister((loop)); \
66 } while (0)
67
68
69 #define UV_SUCCEEDED_WITHOUT_IOCP(result) \
70 ((result) && (handle->flags & UV_HANDLE_SYNC_BYPASS_IOCP))
71
72 #define UV_SUCCEEDED_WITH_IOCP(result) \
73 ((result) || (GetLastError() == ERROR_IO_PENDING))
74
75
76 #define POST_COMPLETION_FOR_REQ(loop, req) \
77 if (!PostQueuedCompletionStatus((loop)->iocp, \
78 0, \
79 0, \
80 &((req)->u.io.overlapped))) { \
81 uv_fatal_error(GetLastError(), "PostQueuedCompletionStatus"); \
82 }
83
84
uv__overlapped_to_req(OVERLAPPED * overlapped)85 INLINE static uv_req_t* uv__overlapped_to_req(OVERLAPPED* overlapped) {
86 return container_of(overlapped, uv_req_t, u.io.overlapped);
87 }
88
89
uv__insert_pending_req(uv_loop_t * loop,uv_req_t * req)90 INLINE static void uv__insert_pending_req(uv_loop_t* loop, uv_req_t* req) {
91 req->next_req = NULL;
92 if (loop->pending_reqs_tail) {
93 #ifdef _DEBUG
94 /* Ensure the request is not already in the queue, or the queue
95 * will get corrupted.
96 */
97 uv_req_t* current = loop->pending_reqs_tail;
98 do {
99 assert(req != current);
100 current = current->next_req;
101 } while(current != loop->pending_reqs_tail);
102 #endif
103
104 req->next_req = loop->pending_reqs_tail->next_req;
105 loop->pending_reqs_tail->next_req = req;
106 loop->pending_reqs_tail = req;
107 } else {
108 req->next_req = req;
109 loop->pending_reqs_tail = req;
110 }
111 }
112
113
114 #define DELEGATE_STREAM_REQ(loop, req, method, handle_at) \
115 do { \
116 switch (((uv_handle_t*) (req)->handle_at)->type) { \
117 case UV_TCP: \
118 uv__process_tcp_##method##_req(loop, \
119 (uv_tcp_t*) ((req)->handle_at), \
120 req); \
121 break; \
122 \
123 case UV_NAMED_PIPE: \
124 uv__process_pipe_##method##_req(loop, \
125 (uv_pipe_t*) ((req)->handle_at), \
126 req); \
127 break; \
128 \
129 case UV_TTY: \
130 uv__process_tty_##method##_req(loop, \
131 (uv_tty_t*) ((req)->handle_at), \
132 req); \
133 break; \
134 \
135 default: \
136 assert(0); \
137 } \
138 } while (0)
139
140
uv__process_reqs(uv_loop_t * loop)141 INLINE static void uv__process_reqs(uv_loop_t* loop) {
142 uv_req_t* req;
143 uv_req_t* first;
144 uv_req_t* next;
145
146 if (loop->pending_reqs_tail == NULL)
147 return;
148
149 first = loop->pending_reqs_tail->next_req;
150 next = first;
151 loop->pending_reqs_tail = NULL;
152
153 while (next != NULL) {
154 req = next;
155 next = req->next_req != first ? req->next_req : NULL;
156
157 switch (req->type) {
158 case UV_READ:
159 DELEGATE_STREAM_REQ(loop, req, read, data);
160 break;
161
162 case UV_WRITE:
163 DELEGATE_STREAM_REQ(loop, (uv_write_t*) req, write, handle);
164 break;
165
166 case UV_ACCEPT:
167 DELEGATE_STREAM_REQ(loop, req, accept, data);
168 break;
169
170 case UV_CONNECT:
171 DELEGATE_STREAM_REQ(loop, (uv_connect_t*) req, connect, handle);
172 break;
173
174 case UV_SHUTDOWN:
175 DELEGATE_STREAM_REQ(loop, (uv_shutdown_t*) req, shutdown, handle);
176 break;
177
178 case UV_UDP_RECV:
179 uv__process_udp_recv_req(loop, (uv_udp_t*) req->data, req);
180 break;
181
182 case UV_UDP_SEND:
183 uv__process_udp_send_req(loop,
184 ((uv_udp_send_t*) req)->handle,
185 (uv_udp_send_t*) req);
186 break;
187
188 case UV_WAKEUP:
189 uv__process_async_wakeup_req(loop, (uv_async_t*) req->data, req);
190 break;
191
192 case UV_SIGNAL_REQ:
193 uv__process_signal_req(loop, (uv_signal_t*) req->data, req);
194 break;
195
196 case UV_POLL_REQ:
197 uv__process_poll_req(loop, (uv_poll_t*) req->data, req);
198 break;
199
200 case UV_PROCESS_EXIT:
201 uv__process_proc_exit(loop, (uv_process_t*) req->data);
202 break;
203
204 case UV_FS_EVENT_REQ:
205 uv__process_fs_event_req(loop, req, (uv_fs_event_t*) req->data);
206 break;
207
208 default:
209 assert(0);
210 }
211 }
212 }
213
214 #endif /* UV_WIN_REQ_INL_H_ */
215
