diff options
Diffstat (limited to 'app/nginx/src/os/unix/ngx_readv_chain.c')
| -rw-r--r-- | app/nginx/src/os/unix/ngx_readv_chain.c | 214 |
1 files changed, 0 insertions, 214 deletions
diff --git a/app/nginx/src/os/unix/ngx_readv_chain.c b/app/nginx/src/os/unix/ngx_readv_chain.c deleted file mode 100644 index 454cfdc..0000000 --- a/app/nginx/src/os/unix/ngx_readv_chain.c +++ /dev/null @@ -1,214 +0,0 @@ - -/* - * Copyright (C) Igor Sysoev - * Copyright (C) Nginx, Inc. - */ - - -#include <ngx_config.h> -#include <ngx_core.h> -#include <ngx_event.h> - - -ssize_t -ngx_readv_chain(ngx_connection_t *c, ngx_chain_t *chain, off_t limit) -{ - u_char *prev; - ssize_t n, size; - ngx_err_t err; - ngx_array_t vec; - ngx_event_t *rev; - struct iovec *iov, iovs[NGX_IOVS_PREALLOCATE]; - - rev = c->read; - -#if (NGX_HAVE_KQUEUE) - - if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { - ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, - "readv: eof:%d, avail:%d, err:%d", - rev->pending_eof, rev->available, rev->kq_errno); - - if (rev->available == 0) { - if (rev->pending_eof) { - rev->ready = 0; - rev->eof = 1; - - ngx_log_error(NGX_LOG_INFO, c->log, rev->kq_errno, - "kevent() reported about an closed connection"); - - if (rev->kq_errno) { - rev->error = 1; - ngx_set_socket_errno(rev->kq_errno); - return NGX_ERROR; - } - - return 0; - - } else { - return NGX_AGAIN; - } - } - } - -#endif - -#if (NGX_HAVE_EPOLLRDHUP) - - if (ngx_event_flags & NGX_USE_EPOLL_EVENT) { - ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, - "readv: eof:%d, avail:%d", - rev->pending_eof, rev->available); - - if (!rev->available && !rev->pending_eof) { - return NGX_AGAIN; - } - } - -#endif - - prev = NULL; - iov = NULL; - size = 0; - - vec.elts = iovs; - vec.nelts = 0; - vec.size = sizeof(struct iovec); - vec.nalloc = NGX_IOVS_PREALLOCATE; - vec.pool = c->pool; - - /* coalesce the neighbouring bufs */ - - while (chain) { - n = chain->buf->end - chain->buf->last; - - if (limit) { - if (size >= limit) { - break; - } - - if (size + n > limit) { - n = (ssize_t) (limit - size); - } - } - - if (prev == chain->buf->last) { - iov->iov_len += n; - - } else { - if (vec.nelts >= IOV_MAX) { - break; - } - - iov = ngx_array_push(&vec); - if (iov == NULL) { - return NGX_ERROR; - } - - iov->iov_base = (void *) chain->buf->last; - iov->iov_len = n; - } - - size += n; - prev = chain->buf->end; - chain = chain->next; - } - - ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, - "readv: %ui, last:%uz", vec.nelts, iov->iov_len); - - do { - n = readv(c->fd, (struct iovec *) vec.elts, vec.nelts); - - if (n == 0) { - rev->ready = 0; - rev->eof = 1; - -#if (NGX_HAVE_KQUEUE) - - /* - * on FreeBSD readv() may return 0 on closed socket - * even if kqueue reported about available data - */ - - if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { - rev->available = 0; - } - -#endif - - return 0; - } - - if (n > 0) { - -#if (NGX_HAVE_KQUEUE) - - if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { - rev->available -= n; - - /* - * rev->available may be negative here because some additional - * bytes may be received between kevent() and readv() - */ - - if (rev->available <= 0) { - if (!rev->pending_eof) { - rev->ready = 0; - } - - rev->available = 0; - } - - return n; - } - -#endif - -#if (NGX_HAVE_EPOLLRDHUP) - - if ((ngx_event_flags & NGX_USE_EPOLL_EVENT) - && ngx_use_epoll_rdhup) - { - if (n < size) { - if (!rev->pending_eof) { - rev->ready = 0; - } - - rev->available = 0; - } - - return n; - } - -#endif - - if (n < size && !(ngx_event_flags & NGX_USE_GREEDY_EVENT)) { - rev->ready = 0; - } - - return n; - } - - err = ngx_socket_errno; - - if (err == NGX_EAGAIN || err == NGX_EINTR) { - ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, - "readv() not ready"); - n = NGX_AGAIN; - - } else { - n = ngx_connection_error(c, err, "readv() failed"); - break; - } - - } while (err == NGX_EINTR); - - rev->ready = 0; - - if (n == NGX_ERROR) { - c->read->error = 1; - } - - return n; -} |