QUIC: improved debug logging. - wording in log->action is adjusted to match function names. - connection close steps are made obvious and start with "quic close" prefix: *1 quic close initiated rc:-4 *1 quic close silent drain:0 timedout:1 *1 quic close resumed rc:-1 *1 quic close resumed rc:-1 *1 quic close resumed rc:-4 *1 quic close completed this makes it easy to understand if particular "close" record is an initial cause or lasting process, or the final one. - cases of close without quic connection now logged as "packet rejected": *14 quic run *14 quic packet rx long flags:ec version:1 *14 quic packet rx hs len:61 *14 quic packet rx dcid len:20 00000000000002c32f60e4aa2b90a64a39dc4228 *14 quic packet rx scid len:8 81190308612cd019 *14 quic expected initial, got handshake *14 quic packet done rc:-1 level:hs decr:0 pn:0 perr:0 *14 quic packet rejected rc:-1, cleanup connection *14 reusable connection: 0 this makes it easy to spot early packet rejection and avoid confuse with quic connection closing (which in fact was not even created). - packet processing summary now uses same prefix "quic packet done rc:" - added debug to places where packet was rejected without any reason logged

/*
 * Copyright (C) Nginx, Inc.
 * Copyright (C) Valentin V. Bartenev
 */


#ifndef _NGX_THREAD_POOL_H_INCLUDED_
#define _NGX_THREAD_POOL_H_INCLUDED_


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


struct ngx_thread_task_s {
    ngx_thread_task_t   *next;
    ngx_uint_t           id;
    void                *ctx;
    void               (*handler)(void *data, ngx_log_t *log);
    ngx_event_t          event;
};


typedef struct ngx_thread_pool_s  ngx_thread_pool_t;


ngx_thread_pool_t *ngx_thread_pool_add(ngx_conf_t *cf, ngx_str_t *name);
ngx_thread_pool_t *ngx_thread_pool_get(ngx_cycle_t *cycle, ngx_str_t *name);

ngx_thread_task_t *ngx_thread_task_alloc(ngx_pool_t *pool, size_t size);
ngx_int_t ngx_thread_task_post(ngx_thread_pool_t *tp, ngx_thread_task_t *task);


#endif /* _NGX_THREAD_POOL_H_INCLUDED_ */