view src/event/ngx_event_posted.c @ 8385:9ce6d80df113 quic

QUIC: simplified quic connection dispatching. Currently listener contains rbtree with multiple nodes for single QUIC connection: each corresponding to specific server id. Each udp node points to same ngx_connection_t, which points to QUIC connection via c->udp field. Thus when an event handler is called, it only gets ngx_connection_t with c->udp pointing to QUIC connection. This makes it hard to obtain actual node which was used to dispatch packet (it requires to repeat DCID lookup). Additionally, ngx_quic_connection_t->udp field is only needed to keep a pointer in c->udp. The node is not added into the tree and does not carry useful information.
author Vladimir Homutov <vl@nginx.com>
date Fri, 02 Apr 2021 11:31:37 +0300
parents f1720934c45b
children
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/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>


ngx_queue_t  ngx_posted_accept_events;
ngx_queue_t  ngx_posted_next_events;
ngx_queue_t  ngx_posted_events;


void
ngx_event_process_posted(ngx_cycle_t *cycle, ngx_queue_t *posted)
{
    ngx_queue_t  *q;
    ngx_event_t  *ev;

    while (!ngx_queue_empty(posted)) {

        q = ngx_queue_head(posted);
        ev = ngx_queue_data(q, ngx_event_t, queue);

        ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
                      "posted event %p", ev);

        ngx_delete_posted_event(ev);

        ev->handler(ev);
    }
}


void
ngx_event_move_posted_next(ngx_cycle_t *cycle)
{
    ngx_queue_t  *q;
    ngx_event_t  *ev;

    for (q = ngx_queue_head(&ngx_posted_next_events);
         q != ngx_queue_sentinel(&ngx_posted_next_events);
         q = ngx_queue_next(q))
    {
        ev = ngx_queue_data(q, ngx_event_t, queue);

        ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
                      "posted next event %p", ev);

        ev->ready = 1;
        ev->available = -1;
    }

    ngx_queue_add(&ngx_posted_events, &ngx_posted_next_events);
    ngx_queue_init(&ngx_posted_next_events);
}