Mercurial > hg > nginx-quic
annotate src/event/ngx_event_mutex.c @ 5528:d5de6c25b759
SPDY: use frame->next pointer to chain free frames.
There is no need in separate "free" pointer and like it is for ngx_chain_t
the "next" pointer can be used. But after this change successfully handled
frame should not be accessed, so the frame handling cycle was improved to
store pointer to the next frame before processing.
Also worth noting that initializing "free" pointer to NULL in the original
code was surplus.
author | Valentin Bartenev <vbart@nginx.com> |
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date | Wed, 22 Jan 2014 04:58:19 +0400 |
parents | d620f497c50f |
children | 3377f9459e99 |
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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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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13 ngx_int_t ngx_event_mutex_timedlock(ngx_event_mutex_t *m, ngx_msec_t timer, |
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14 ngx_event_t *ev) |
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15 { |
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16 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, |
461 | 17 "lock event mutex %p lock:%XD", m, m->lock); |
272
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18 |
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19 if (m->lock) { |
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20 |
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21 if (m->events == NULL) { |
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22 m->events = ev; |
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23 |
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24 } else { |
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25 m->last->next = ev; |
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26 } |
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27 |
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28 m->last = ev; |
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29 ev->next = NULL; |
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30 |
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31 #if (NGX_THREADS0) |
272
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32 ev->light = 1; |
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33 #endif |
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34 |
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35 ngx_add_timer(ev, timer); |
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36 |
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37 return NGX_AGAIN; |
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38 } |
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39 |
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40 m->lock = 1; |
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41 |
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42 return NGX_OK; |
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43 } |
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44 |
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45 |
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46 ngx_int_t ngx_event_mutex_unlock(ngx_event_mutex_t *m, ngx_log_t *log) |
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47 { |
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48 ngx_event_t *ev; |
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49 |
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50 if (m->lock == 0) { |
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51 ngx_log_error(NGX_LOG_ALERT, log, 0, |
461 | 52 "tring to unlock the free event mutex %p", m); |
272
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53 return NGX_ERROR; |
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54 } |
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55 |
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56 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, log, 0, |
461 | 57 "unlock event mutex %p, next event: %p", m, m->events); |
272
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58 |
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59 m->lock = 0; |
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60 |
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61 if (m->events) { |
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62 ev = m->events; |
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63 m->events = ev->next; |
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64 |
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65 ev->next = (ngx_event_t *) ngx_posted_events; |
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66 ngx_posted_events = ev; |
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67 } |
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68 |
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69 return NGX_OK; |
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70 } |