Mercurial > hg > nginx-vendor-current
view src/os/unix/ngx_aio_read_chain.c @ 648:f200748c0ac8 NGINX_1_1_8
nginx 1.1.8
*) Change: the ngx_http_limit_zone_module was renamed to the
ngx_http_limit_conn_module.
*) Change: the "limit_zone" directive was superseded by the
"limit_conn_zone" directive with a new syntax.
*) Feature: support for multiple "limit_conn" limits on the same level.
*) Feature: the "image_filter_sharpen" directive.
*) Bugfix: a segmentation fault might occur in a worker process if
resolver got a big DNS response.
Thanks to Ben Hawkes.
*) Bugfix: in cache key calculation if internal MD5 implementation was
used; the bug had appeared in 1.0.4.
*) Bugfix: the "If-Modified-Since", "If-Range", etc. client request
header lines might be passed to backend while caching; or not passed
without caching if caching was enabled in another part of the
configuration.
*) Bugfix: the module ngx_http_mp4_module sent incorrect
"Content-Length" response header line if the "start" argument was
used.
Thanks to Piotr Sikora.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Mon, 14 Nov 2011 00:00:00 +0400 |
parents | 86dad910eeb6 |
children | d0f7a625f27c |
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/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> ssize_t ngx_aio_read_chain(ngx_connection_t *c, ngx_chain_t *cl) { int n; u_char *buf, *prev; size_t size; ssize_t total; if (c->read->pending_eof) { c->read->ready = 0; return 0; } total = 0; while (cl) { /* we can post the single aio operation only */ if (!c->read->ready) { return total ? total : NGX_AGAIN; } buf = cl->buf->last; prev = cl->buf->last; size = 0; /* coalesce the neighbouring bufs */ while (cl && prev == cl->buf->last) { size += cl->buf->end - cl->buf->last; prev = cl->buf->end; cl = cl->next; } n = ngx_aio_read(c, buf, size); ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "aio_read: %d", n); if (n == NGX_AGAIN) { return total ? total : NGX_AGAIN; } if (n == NGX_ERROR) { return NGX_ERROR; } if (n == 0) { c->read->pending_eof = 1; if (total) { c->read->eof = 0; c->read->ready = 1; } return total; } if (n > 0) { total += n; } ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "aio_read total: %d", total); } return total ? total : NGX_AGAIN; }