[nginx] Refactored ngx_solaris_sendfilev_chain().

[Valentin Bartenev]

details:   http://hg.nginx.org/nginx/rev/4dd67e5d958e
branches:  
changeset: 5914:4dd67e5d958e
user:      Valentin Bartenev <vbart at nginx.com>
date:      Wed Nov 19 21:17:11 2014 +0300
description:
Refactored ngx_solaris_sendfilev_chain().

Though ngx_solaris_sendfilev_chain() shouldn't suffer from the problem mentioned
in d1bde5c3c5d2 since currently IOV_MAX on Solaris is 16, but this follows the
change from 3d5717550371 in order to make the code look similar to other systems
and potentially eliminates the problem in the future.

diffstat:

 src/os/unix/ngx_solaris_sendfilev_chain.c |  25 +++++++------------------
 1 files changed, 7 insertions(+), 18 deletions(-)

diffs (77 lines):

diff -r 8e903522c17a -r 4dd67e5d958e src/os/unix/ngx_solaris_sendfilev_chain.c
--- a/src/os/unix/ngx_solaris_sendfilev_chain.c	Tue Oct 07 11:38:57 2014 +0400
+++ b/src/os/unix/ngx_solaris_sendfilev_chain.c	Wed Nov 19 21:17:11 2014 +0300
@@ -48,8 +48,8 @@ ngx_solaris_sendfilev_chain(ngx_connecti
     ssize_t         n;
     ngx_int_t       eintr;
     ngx_err_t       err;
+    ngx_uint_t      nsfv;
     sendfilevec_t  *sfv, sfvs[NGX_SENDFILEVECS];
-    ngx_array_t     vec;
     ngx_event_t    *wev;
     ngx_chain_t    *cl;
 
@@ -73,11 +73,6 @@ ngx_solaris_sendfilev_chain(ngx_connecti
 
     send = 0;
 
-    vec.elts = sfvs;
-    vec.size = sizeof(sendfilevec_t);
-    vec.nalloc = NGX_SENDFILEVECS;
-    vec.pool = c->pool;
-
     for ( ;; ) {
         fd = SFV_FD_SELF;
         prev = NULL;
@@ -87,7 +82,7 @@ ngx_solaris_sendfilev_chain(ngx_connecti
         sent = 0;
         prev_send = send;
 
-        vec.nelts = 0;
+        nsfv = 0;
 
         /* create the sendfilevec and coalesce the neighbouring bufs */
 
@@ -110,14 +105,11 @@ ngx_solaris_sendfilev_chain(ngx_connecti
                     sfv->sfv_len += (size_t) size;
 
                 } else {
-                    if (vec.nelts >= IOV_MAX) {
+                    if (nsfv == NGX_SENDFILEVECS) {
                         break;
                     }
 
-                    sfv = ngx_array_push(&vec);
-                    if (sfv == NULL) {
-                        return NGX_CHAIN_ERROR;
-                    }
+                    sfv = &sfvs[nsfv++];
 
                     sfv->sfv_fd = SFV_FD_SELF;
                     sfv->sfv_flag = 0;
@@ -148,14 +140,11 @@ ngx_solaris_sendfilev_chain(ngx_connecti
                     sfv->sfv_len += (size_t) size;
 
                 } else {
-                    if (vec.nelts >= IOV_MAX) {
+                    if (nsfv == NGX_SENDFILEVECS) {
                         break;
                     }
 
-                    sfv = ngx_array_push(&vec);
-                    if (sfv == NULL) {
-                        return NGX_CHAIN_ERROR;
-                    }
+                    sfv = &sfvs[nsfv++];
 
                     fd = cl->buf->file->fd;
                     sfv->sfv_fd = fd;
@@ -169,7 +158,7 @@ ngx_solaris_sendfilev_chain(ngx_connecti
             }
         }
 
-        n = sendfilev(c->fd, vec.elts, vec.nelts, &sent);
+        n = sendfilev(c->fd, sfvs, nsfv, &sent);
 
         if (n == -1) {
             err = ngx_errno;