mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

aio-posix: avoid unnecessary aio_epoll_enabled() calls

Browse Source 
As epoll whether enabled or not is a global setting, we can just
check it only once rather than checking it with every node iteration.
Through this we can avoid a lot of checks when epoll is not enabled.

Signed-off-by: Yaowei Bai <baiyaowei@cmss.chinamobile.com>
Reviewed-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
Message-id: 1473851019-7005-3-git-send-email-baiyaowei@cmss.chinamobile.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Yaowei Bai 2016-09-14 07:03:39 -04:00 committed by Stefan Hajnoczi
parent e7e4f9f950
commit 6b9424689a
1 changed files with 7 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
aio-posix.c
View File

@ -431,11 +431,13 @@ bool aio_poll(AioContext *ctx, bool blocking)
assert(npfd == 0); assert(npfd == 0);
/* fill pollfds */ /* fill pollfds */
QLIST_FOREACH(node, &ctx->aio_handlers, node) {
if (!node->deleted && node->pfd.events if (!aio_epoll_enabled(ctx)) {
&& !aio_epoll_enabled(ctx) QLIST_FOREACH(node, &ctx->aio_handlers, node) {
&& aio_node_check(ctx, node->is_external)) { if (!node->deleted && node->pfd.events
add_pollfd(node); && aio_node_check(ctx, node->is_external)) {
add_pollfd(node);
}
} }
} }