Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_send.c @ 5115:a29c574d61fa
Status: introduced the "ngx_stat_waiting" counter.
And corresponding variable $connections_waiting was added.
Previously, waiting connections were counted as the difference between
active connections and the sum of reading and writing connections.
That made it impossible to count more than one request in one connection
as reading or writing (as is the case for SPDY).
Also, we no longer count connections in handshake state as waiting.
author | Valentin Bartenev <vbart@nginx.com> |
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date | Fri, 15 Mar 2013 20:00:49 +0000 |
parents | d620f497c50f |
children | f01ab2dbcfdc |
rev | line source |
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441
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1 |
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2 /* |
444
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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6 |
417
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_event.h> |
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11 |
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12 |
1682 | 13 ssize_t |
14 ngx_unix_send(ngx_connection_t *c, u_char *buf, size_t size) | |
417
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15 { |
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16 ssize_t n; |
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17 ngx_err_t err; |
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18 ngx_event_t *wev; |
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19 |
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20 wev = c->write; |
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21 |
469 | 22 #if (NGX_HAVE_KQUEUE) |
417
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23 |
587 | 24 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT) && wev->pending_eof) { |
537 | 25 (void) ngx_connection_error(c, wev->kq_errno, |
26 "kevent() reported about an closed connection"); | |
417
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27 wev->error = 1; |
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28 return NGX_ERROR; |
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29 } |
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30 |
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31 #endif |
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32 |
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33 for ( ;; ) { |
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34 n = send(c->fd, buf, size, 0); |
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35 |
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36 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, |
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37 "send: fd:%d %d of %d", c->fd, n, size); |
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38 |
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39 if (n > 0) { |
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40 if (n < (ssize_t) size) { |
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41 wev->ready = 0; |
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42 } |
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43 |
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44 c->sent += n; |
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45 |
417
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46 return n; |
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47 } |
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48 |
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49 err = ngx_socket_errno; |
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50 |
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51 if (n == 0) { |
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52 ngx_log_error(NGX_LOG_ALERT, c->log, err, "send() returned zero"); |
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53 wev->ready = 0; |
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54 return n; |
417
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55 } |
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56 |
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57 if (err == NGX_EAGAIN || err == NGX_EINTR) { |
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58 wev->ready = 0; |
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59 |
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60 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
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61 "send() not ready"); |
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62 |
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63 if (err == NGX_EAGAIN) { |
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64 return NGX_AGAIN; |
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65 } |
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66 |
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67 } else { |
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68 wev->error = 1; |
537 | 69 (void) ngx_connection_error(c, err, "send() failed"); |
417
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70 return NGX_ERROR; |
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71 } |
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72 } |
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73 } |