Mercurial > hg > nginx
annotate src/os/win32/ngx_wsasend.c @ 9202:e88cdaa0f1ff
AIO operations now add timers (ticket #2162).
Each AIO (thread IO) operation being run is now accompanied with 1-minute
timer. This timer prevents unexpected shutdown of the worker process while
an AIO operation is running, and logs an alert if the operation is running
for too long.
This fixes "open socket left" alerts during worker processes shutdown
due to pending AIO (or thread IO) operations while corresponding requests
have no timers. In particular, such errors were observed while reading
cache headers (ticket #2162), and with worker_shutdown_timeout.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 29 Jan 2024 10:31:37 +0300 |
parents | 53eb1e67e432 |
children |
rev | line source |
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2725 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4412 | 4 * Copyright (C) Nginx, Inc. |
2725 | 5 */ |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 #include <ngx_event.h> | |
11 | |
12 | |
13 ssize_t | |
14 ngx_wsasend(ngx_connection_t *c, u_char *buf, size_t size) | |
15 { | |
16 int n; | |
17 u_long sent; | |
18 ngx_err_t err; | |
19 ngx_event_t *wev; | |
20 WSABUF wsabuf; | |
21 | |
22 wev = c->write; | |
23 | |
24 if (!wev->ready) { | |
25 return NGX_AGAIN; | |
26 } | |
27 | |
28 /* | |
29 * WSABUF must be 4-byte aligned otherwise | |
30 * WSASend() will return undocumented WSAEINVAL error. | |
31 */ | |
32 | |
33 wsabuf.buf = (char *) buf; | |
34 wsabuf.len = size; | |
35 | |
36 sent = 0; | |
37 | |
38 n = WSASend(c->fd, &wsabuf, 1, &sent, 0, NULL, NULL); | |
39 | |
40 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0, | |
41 "WSASend: fd:%d, %d, %ul of %uz", c->fd, n, sent, size); | |
42 | |
43 if (n == 0) { | |
44 if (sent < size) { | |
45 wev->ready = 0; | |
46 } | |
47 | |
48 c->sent += sent; | |
49 | |
50 return sent; | |
51 } | |
52 | |
53 err = ngx_socket_errno; | |
54 | |
55 if (err == WSAEWOULDBLOCK) { | |
56 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, "WSASend() not ready"); | |
5232
53eb1e67e432
Win32: added missing reset of wev->ready on WSAEWOULDBLOCK.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4412
diff
changeset
|
57 wev->ready = 0; |
2725 | 58 return NGX_AGAIN; |
59 } | |
60 | |
61 wev->error = 1; | |
62 ngx_connection_error(c, err, "WSASend() failed"); | |
63 | |
64 return NGX_ERROR; | |
65 } | |
66 | |
67 | |
68 ssize_t | |
69 ngx_overlapped_wsasend(ngx_connection_t *c, u_char *buf, size_t size) | |
70 { | |
71 int n; | |
72 u_long sent; | |
73 ngx_err_t err; | |
74 ngx_event_t *wev; | |
75 LPWSAOVERLAPPED ovlp; | |
76 WSABUF wsabuf; | |
77 | |
78 wev = c->write; | |
79 | |
80 if (!wev->ready) { | |
81 return NGX_AGAIN; | |
82 } | |
83 | |
84 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, | |
85 "wev->complete: %d", wev->complete); | |
86 | |
87 if (!wev->complete) { | |
88 | |
89 /* post the overlapped WSASend() */ | |
90 | |
91 /* | |
92 * WSABUFs must be 4-byte aligned otherwise | |
93 * WSASend() will return undocumented WSAEINVAL error. | |
94 */ | |
95 | |
96 wsabuf.buf = (char *) buf; | |
97 wsabuf.len = size; | |
98 | |
99 sent = 0; | |
100 | |
101 ovlp = (LPWSAOVERLAPPED) &c->write->ovlp; | |
102 ngx_memzero(ovlp, sizeof(WSAOVERLAPPED)); | |
103 | |
104 n = WSASend(c->fd, &wsabuf, 1, &sent, 0, ovlp, NULL); | |
105 | |
106 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0, | |
107 "WSASend: fd:%d, %d, %ul of %uz", c->fd, n, sent, size); | |
108 | |
109 wev->complete = 0; | |
110 | |
111 if (n == 0) { | |
112 if (ngx_event_flags & NGX_USE_IOCP_EVENT) { | |
113 | |
114 /* | |
115 * if a socket was bound with I/O completion port then | |
116 * GetQueuedCompletionStatus() would anyway return its status | |
117 * despite that WSASend() was already complete | |
118 */ | |
119 | |
120 wev->active = 1; | |
121 return NGX_AGAIN; | |
122 } | |
123 | |
124 if (sent < size) { | |
125 wev->ready = 0; | |
126 } | |
127 | |
128 c->sent += sent; | |
129 | |
130 return sent; | |
131 } | |
132 | |
133 err = ngx_socket_errno; | |
134 | |
135 if (err == WSA_IO_PENDING) { | |
136 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, | |
137 "WSASend() posted"); | |
138 wev->active = 1; | |
139 return NGX_AGAIN; | |
140 } | |
141 | |
142 wev->error = 1; | |
143 ngx_connection_error(c, err, "WSASend() failed"); | |
144 | |
145 return NGX_ERROR; | |
146 } | |
147 | |
148 /* the overlapped WSASend() complete */ | |
149 | |
150 wev->complete = 0; | |
151 wev->active = 0; | |
152 | |
153 if (ngx_event_flags & NGX_USE_IOCP_EVENT) { | |
154 | |
155 if (wev->ovlp.error) { | |
156 ngx_connection_error(c, wev->ovlp.error, "WSASend() failed"); | |
157 return NGX_ERROR; | |
158 } | |
159 | |
160 sent = wev->available; | |
161 | |
162 } else { | |
163 if (WSAGetOverlappedResult(c->fd, (LPWSAOVERLAPPED) &wev->ovlp, | |
164 &sent, 0, NULL) | |
165 == 0) | |
166 { | |
167 ngx_connection_error(c, ngx_socket_errno, | |
168 "WSASend() or WSAGetOverlappedResult() failed"); | |
169 | |
170 return NGX_ERROR; | |
171 } | |
172 } | |
173 | |
174 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, | |
175 "WSAGetOverlappedResult: fd:%d, %ul of %uz", | |
176 c->fd, sent, size); | |
177 | |
178 if (sent < size) { | |
179 wev->ready = 0; | |
180 } | |
181 | |
182 c->sent += sent; | |
183 | |
184 return sent; | |
185 } |