diff options
Diffstat (limited to 'app/nginx/src/os/unix/ngx_writev_chain.c')
| -rw-r--r-- | app/nginx/src/os/unix/ngx_writev_chain.c | 216 |
1 files changed, 0 insertions, 216 deletions
diff --git a/app/nginx/src/os/unix/ngx_writev_chain.c b/app/nginx/src/os/unix/ngx_writev_chain.c deleted file mode 100644 index e38a3aa..0000000 --- a/app/nginx/src/os/unix/ngx_writev_chain.c +++ /dev/null @@ -1,216 +0,0 @@ - -/* - * Copyright (C) Igor Sysoev - * Copyright (C) Nginx, Inc. - */ - - -#include <ngx_config.h> -#include <ngx_core.h> -#include <ngx_event.h> - - -ngx_chain_t * -ngx_writev_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit) -{ - ssize_t n, sent; - off_t send, prev_send; - ngx_chain_t *cl; - ngx_event_t *wev; - ngx_iovec_t vec; - struct iovec iovs[NGX_IOVS_PREALLOCATE]; - - wev = c->write; - - if (!wev->ready) { - return in; - } - -#if (NGX_HAVE_KQUEUE) - - if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT) && wev->pending_eof) { - (void) ngx_connection_error(c, wev->kq_errno, - "kevent() reported about an closed connection"); - wev->error = 1; - return NGX_CHAIN_ERROR; - } - -#endif - - /* the maximum limit size is the maximum size_t value - the page size */ - - if (limit == 0 || limit > (off_t) (NGX_MAX_SIZE_T_VALUE - ngx_pagesize)) { - limit = NGX_MAX_SIZE_T_VALUE - ngx_pagesize; - } - - send = 0; - - vec.iovs = iovs; - vec.nalloc = NGX_IOVS_PREALLOCATE; - - for ( ;; ) { - prev_send = send; - - /* create the iovec and coalesce the neighbouring bufs */ - - cl = ngx_output_chain_to_iovec(&vec, in, limit - send, c->log); - - if (cl == NGX_CHAIN_ERROR) { - return NGX_CHAIN_ERROR; - } - - if (cl && cl->buf->in_file) { - ngx_log_error(NGX_LOG_ALERT, c->log, 0, - "file buf in writev " - "t:%d r:%d f:%d %p %p-%p %p %O-%O", - cl->buf->temporary, - cl->buf->recycled, - cl->buf->in_file, - cl->buf->start, - cl->buf->pos, - cl->buf->last, - cl->buf->file, - cl->buf->file_pos, - cl->buf->file_last); - - ngx_debug_point(); - - return NGX_CHAIN_ERROR; - } - - send += vec.size; - - n = ngx_writev(c, &vec); - - if (n == NGX_ERROR) { - return NGX_CHAIN_ERROR; - } - - sent = (n == NGX_AGAIN) ? 0 : n; - - c->sent += sent; - - in = ngx_chain_update_sent(in, sent); - - if (send - prev_send != sent) { - wev->ready = 0; - return in; - } - - if (send >= limit || in == NULL) { - return in; - } - } -} - - -ngx_chain_t * -ngx_output_chain_to_iovec(ngx_iovec_t *vec, ngx_chain_t *in, size_t limit, - ngx_log_t *log) -{ - size_t total, size; - u_char *prev; - ngx_uint_t n; - struct iovec *iov; - - iov = NULL; - prev = NULL; - total = 0; - n = 0; - - for ( /* void */ ; in && total < limit; in = in->next) { - - if (ngx_buf_special(in->buf)) { - continue; - } - - if (in->buf->in_file) { - break; - } - - if (!ngx_buf_in_memory(in->buf)) { - ngx_log_error(NGX_LOG_ALERT, log, 0, - "bad buf in output chain " - "t:%d r:%d f:%d %p %p-%p %p %O-%O", - in->buf->temporary, - in->buf->recycled, - in->buf->in_file, - in->buf->start, - in->buf->pos, - in->buf->last, - in->buf->file, - in->buf->file_pos, - in->buf->file_last); - - ngx_debug_point(); - - return NGX_CHAIN_ERROR; - } - - size = in->buf->last - in->buf->pos; - - if (size > limit - total) { - size = limit - total; - } - - if (prev == in->buf->pos) { - iov->iov_len += size; - - } else { - if (n == vec->nalloc) { - break; - } - - iov = &vec->iovs[n++]; - - iov->iov_base = (void *) in->buf->pos; - iov->iov_len = size; - } - - prev = in->buf->pos + size; - total += size; - } - - vec->count = n; - vec->size = total; - - return in; -} - - -ssize_t -ngx_writev(ngx_connection_t *c, ngx_iovec_t *vec) -{ - ssize_t n; - ngx_err_t err; - -eintr: - - n = writev(c->fd, vec->iovs, vec->count); - - ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, - "writev: %z of %uz", n, vec->size); - - if (n == -1) { - err = ngx_errno; - - switch (err) { - case NGX_EAGAIN: - ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, - "writev() not ready"); - return NGX_AGAIN; - - case NGX_EINTR: - ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, - "writev() was interrupted"); - goto eintr; - - default: - c->write->error = 1; - ngx_connection_error(c, err, "writev() failed"); - return NGX_ERROR; - } - } - - return n; -} |