From 9dbad87d25587ff640ef878f7b6159fc368ff541 Mon Sep 17 00:00:00 2001 From: Max Reitz Date: Tue, 10 Sep 2019 14:41:33 +0200 Subject: curl: Pass CURLSocket to curl_multi_do() curl_multi_do_locked() currently marks all sockets as ready. That is not only inefficient, but in fact unsafe (the loop is). A follow-up patch will change that, but to do so, curl_multi_do_locked() needs to know exactly which socket is ready; and that is accomplished by this patch here. Cc: qemu-stable@nongnu.org Signed-off-by: Max Reitz Message-id: 20190910124136.10565-5-mreitz@redhat.com Reviewed-by: Maxim Levitsky Reviewed-by: John Snow Signed-off-by: Max Reitz --- block/curl.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) (limited to 'block') diff --git a/block/curl.c b/block/curl.c index 5838afe..cf26862 100644 --- a/block/curl.c +++ b/block/curl.c @@ -185,15 +185,15 @@ static int curl_sock_cb(CURL *curl, curl_socket_t fd, int action, switch (action) { case CURL_POLL_IN: aio_set_fd_handler(s->aio_context, fd, false, - curl_multi_do, NULL, NULL, state); + curl_multi_do, NULL, NULL, socket); break; case CURL_POLL_OUT: aio_set_fd_handler(s->aio_context, fd, false, - NULL, curl_multi_do, NULL, state); + NULL, curl_multi_do, NULL, socket); break; case CURL_POLL_INOUT: aio_set_fd_handler(s->aio_context, fd, false, - curl_multi_do, curl_multi_do, NULL, state); + curl_multi_do, curl_multi_do, NULL, socket); break; case CURL_POLL_REMOVE: aio_set_fd_handler(s->aio_context, fd, false, @@ -392,9 +392,10 @@ static void curl_multi_check_completion(BDRVCURLState *s) } /* Called with s->mutex held. */ -static void curl_multi_do_locked(CURLState *s) +static void curl_multi_do_locked(CURLSocket *ready_socket) { CURLSocket *socket, *next_socket; + CURLState *s = ready_socket->state; int running; int r; @@ -413,12 +414,13 @@ static void curl_multi_do_locked(CURLState *s) static void curl_multi_do(void *arg) { - CURLState *s = (CURLState *)arg; + CURLSocket *socket = arg; + BDRVCURLState *s = socket->state->s; - qemu_mutex_lock(&s->s->mutex); - curl_multi_do_locked(s); - curl_multi_check_completion(s->s); - qemu_mutex_unlock(&s->s->mutex); + qemu_mutex_lock(&s->mutex); + curl_multi_do_locked(socket); + curl_multi_check_completion(s); + qemu_mutex_unlock(&s->mutex); } static void curl_multi_timeout_do(void *arg) -- cgit v1.1