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CLEANUP: mux-h2: use LIST_ADDED() instead of LIST_ISEMPTY() where relevant

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Lots of places were using LIST_ISEMPTY() to detect if a stream belongs
to one of the send lists or to detect if a connection was already
waiting for a buffer or attached to an idle list. Since these ones are
not list heads but list elements, let's use LIST_ADDED() instead.
This commit is contained in:
Willy Tarreau 2019-05-13 17:56:11 +02:00
parent 42ccb5ac45
commit c234ae38f8
1 changed files with 17 additions and 17 deletions
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34
src/mux_h2.c
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@ -390,7 +390,7 @@ static inline struct buffer *h2_get_buf(struct h2c *h2c, struct buffer *bptr)
{
struct buffer *buf = NULL;
if (likely(LIST_ISEMPTY(&h2c->buf_wait.list)) &&
if (likely(!LIST_ADDED(&h2c->buf_wait.list)) &&
unlikely((buf = b_alloc_margin(bptr, 0)) == NULL)) {
h2c->buf_wait.target = h2c;
h2c->buf_wait.wakeup_cb = h2_buf_available;
@ -722,7 +722,7 @@ static void __maybe_unused h2s_notify_send(struct h2s *h2s)
{
struct wait_event *sw;
if (h2s->send_wait && LIST_ISEMPTY(&h2s->sending_list)) {
if (h2s->send_wait && !LIST_ADDED(&h2s->sending_list)) {
sw = h2s->send_wait;
sw->events &= ~SUB_RETRY_SEND;
LIST_ADDQ(&h2s->h2c->sending_list, &h2s->sending_list);
@ -874,7 +874,7 @@ static void h2s_destroy(struct h2s *h2s)
* we're in it, we're getting out anyway
*/
LIST_DEL_INIT(&h2s->list);
if (!LIST_ISEMPTY(&h2s->sending_list)) {
if (LIST_ADDED(&h2s->sending_list)) {
task_remove_from_tasklet_list((struct task *)h2s->send_wait->task);
LIST_DEL_INIT(&h2s->sending_list);
}
@ -1498,7 +1498,7 @@ static void h2c_update_all_ws(struct h2c *h2c, int diff)
if (h2s->mws > 0 && (h2s->flags & H2_SF_BLK_SFCTL)) {
h2s->flags &= ~H2_SF_BLK_SFCTL;
if (h2s->send_wait && LIST_ISEMPTY(&h2s->list))
if (h2s->send_wait && !LIST_ADDED(&h2s->list))
LIST_ADDQ(&h2c->send_list, &h2s->list);
}
@ -1804,7 +1804,7 @@ static int h2c_handle_window_update(struct h2c *h2c, struct h2s *h2s)
h2s->mws += inc;
if (h2s->mws > 0 && (h2s->flags & H2_SF_BLK_SFCTL)) {
h2s->flags &= ~H2_SF_BLK_SFCTL;
if (h2s->send_wait && LIST_ISEMPTY(&h2s->list))
if (h2s->send_wait && !LIST_ADDED(&h2s->list))
LIST_ADDQ(&h2c->send_list, &h2s->list);
}
}
@ -2594,7 +2594,7 @@ static int h2_process_mux(struct h2c *h2c)
h2c->st0 >= H2_CS_ERROR)
break;
if (!LIST_ISEMPTY(&h2s->sending_list))
if (LIST_ADDED(&h2s->sending_list))
continue;
h2s->flags &= ~H2_SF_BLK_ANY;
@ -2614,7 +2614,7 @@ static int h2_process_mux(struct h2c *h2c)
if (h2c->st0 >= H2_CS_ERROR || h2c->flags & H2_CF_MUX_BLOCK_ANY)
break;
if (!LIST_ISEMPTY(&h2s->sending_list))
if (LIST_ADDED(&h2s->sending_list))
continue;
/* For some reason, the upper layer failed to subsribe again,
@ -2786,7 +2786,7 @@ static int h2_send(struct h2c *h2c)
if (h2c->st0 >= H2_CS_ERROR || h2c->flags & H2_CF_MUX_BLOCK_ANY)
break;
if (!LIST_ISEMPTY(&h2s->sending_list))
if (LIST_ADDED(&h2s->sending_list))
continue;
/* For some reason, the upper layer failed to subsribe again,
@ -3046,7 +3046,7 @@ static void h2_detach(struct conn_stream *cs)
return;
/* The stream is about to die, so no need to attempt to run its task */
if (!LIST_ISEMPTY(&h2s->sending_list) &&
if (LIST_ADDED(&h2s->sending_list) &&
h2s->send_wait != &h2s->wait_event) {
task_remove_from_tasklet_list((struct task *)h2s->send_wait->task);
LIST_DEL_INIT(&h2s->sending_list);
@ -3120,7 +3120,7 @@ static void h2_detach(struct conn_stream *cs)
/* Never ever allow to reuse a connection from a non-reuse backend */
if ((h2c->proxy->options & PR_O_REUSE_MASK) == PR_O_REUSE_NEVR)
h2c->conn->flags |= CO_FL_PRIVATE;
if (LIST_ISEMPTY(&h2c->conn->list) && h2c->nb_streams < h2c->streams_limit) {
if (!LIST_ADDED(&h2c->conn->list) && h2c->nb_streams < h2c->streams_limit) {
struct server *srv = objt_server(h2c->conn->target);
if (srv) {
@ -3192,7 +3192,7 @@ static int h2_do_shutr(struct h2s *h2s)
return 0;
add_to_list:
if (LIST_ISEMPTY(&h2s->list)) {
if (!LIST_ADDED(&h2s->list)) {
sw->events |= SUB_RETRY_SEND;
if (h2s->flags & H2_SF_BLK_MFCTL) {
LIST_ADDQ(&h2c->fctl_list, &h2s->list);
@ -3260,7 +3260,7 @@ static int h2_do_shutw(struct h2s *h2s)
return 0;
add_to_list:
if (LIST_ISEMPTY(&h2s->list)) {
if (!LIST_ADDED(&h2s->list)) {
sw->events |= SUB_RETRY_SEND;
if (h2s->flags & H2_SF_BLK_MFCTL) {
LIST_ADDQ(&h2c->fctl_list, &h2s->list);
@ -4158,7 +4158,7 @@ static size_t h2s_frt_make_resp_data(struct h2s *h2s, const struct buffer *buf,
if (size <= 0) {
h2s->flags |= H2_SF_BLK_SFCTL;
if (!LIST_ISEMPTY(&h2s->list))
if (LIST_ADDED(&h2s->list))
LIST_DEL_INIT(&h2s->list);
goto end;
}
@ -4903,7 +4903,7 @@ static size_t h2s_htx_frt_make_resp_data(struct h2s *h2s, struct buffer *buf, si
if (h2s->mws <= 0) {
h2s->flags |= H2_SF_BLK_SFCTL;
if (!LIST_ISEMPTY(&h2s->list))
if (LIST_ADDED(&h2s->list))
LIST_DEL_INIT(&h2s->list);
goto end;
}
@ -5199,7 +5199,7 @@ static int h2_subscribe(struct conn_stream *cs, int event_type, void *param)
sw->handle = h2s;
h2s->send_wait = sw;
if (!(h2s->flags & H2_SF_BLK_SFCTL) &&
LIST_ISEMPTY(&h2s->list)) {
!LIST_ADDED(&h2s->list)) {
if (h2s->flags & H2_SF_BLK_MFCTL)
LIST_ADDQ(&h2c->fctl_list, &h2s->list);
else
@ -5237,7 +5237,7 @@ static int h2_unsubscribe(struct conn_stream *cs, int event_type, void *param)
LIST_INIT(&h2s->list);
sw->events &= ~SUB_RETRY_SEND;
/* We were about to send, make sure it does not happen */
if (!LIST_ISEMPTY(&h2s->sending_list) &&
if (LIST_ADDED(&h2s->sending_list) &&
h2s->send_wait != &h2s->wait_event) {
task_remove_from_tasklet_list((struct task *)h2s->send_wait->task);
LIST_DEL_INIT(&h2s->sending_list);
@ -5352,7 +5352,7 @@ static size_t h2_snd_buf(struct conn_stream *cs, struct buffer *buf, size_t coun
* and there's somebody else that is waiting to send, do nothing,
* we will subscribe later and be put at the end of the list
*/
if (LIST_ISEMPTY(&h2s->sending_list) &&
if (!LIST_ADDED(&h2s->sending_list) &&
(!LIST_ISEMPTY(&h2s->h2c->send_list) || !LIST_ISEMPTY(&h2s->h2c->fctl_list)))
return 0;
LIST_DEL_INIT(&h2s->sending_list);