Mercurial > hg > nginx
view src/os/unix/ngx_aio_read_chain.c @ 559:c1f965ef9718 release-0.3.1
nginx-0.3.1-RELEASE import
*) Bugfix: the segmentation fault occurred when the signal queue
overflowed if the "rtsig" method was used; the bug had appeared in
0.2.0.
*) Change: correct handling of the "\\", "\"", "\'", and "\$" pairs in
SSI.
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Mon, 10 Oct 2005 12:59:41 +0000 |
parents | d4ea69372b94 |
children | 4d9ea73a627a |
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/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> #include <ngx_aio.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; }