/*-
* Copyright (c) 2006 Verdens Gang AS
* Copyright (c) 2006-2008 Linpro AS
* All rights reserved.
*
* Author: Poul-Henning Kamp
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: cache_main.c 3615 2009-02-05 11:38:45Z tfheen $
*/
#include "config.h"
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <signal.h>
#include "shmlog.h"
#include "cache.h"
#include "stevedore.h"
#include "hash_slinger.h"
/*--------------------------------------------------------------------
* Per thread storage for the session currently being processed by
* the thread. This is used for panic messages.
*/
static pthread_key_t sp_key;
void
THR_SetSession(const struct sess *sp)
{
AZ(pthread_setspecific(sp_key, sp));
}
const struct sess *
THR_GetSession(void)
{
return (pthread_getspecific(sp_key));
}
/*--------------------------------------------------------------------
* Name threads if our pthreads implementation supports it.
*/
static pthread_key_t name_key;
void
THR_SetName(const char *name)//来自pthread.h
{
AZ(pthread_setspecific(name_key, name));
#ifdef HAVE_PTHREAD_SET_NAME_NP
pthread_set_name_np(pthread_self(), name);
#endif
}
const char *
THR_GetName(void)
{
return (pthread_getspecific(name_key));
}
/*--------------------------------------------------------------------
* XXX: Think more about which order we start things
*/
void
child_main(void)
{
setbuf(stdout, NULL);
setbuf(stderr, NULL);
printf("Child starts\n");
AZ(pthread_key_create(&sp_key, NULL));//pthread.h中出现，属于unix标准库里面的
AZ(pthread_key_create(&name_key, NULL));
THR_SetName("cache-main");
VSL_Init(); /* First, LCK needs it. */ //初始化一个varnsh_share_log,详见shmlog.c
LCK_Init(); /* Locking, must be first */
//lock the cache
//Build our own locks on top of pthread mutexes and hope that the next
//civilization is better at such crucial details than this one.
//
PAN_Init(); //cahe_panic.c这里目前感觉就是发现cache的问题，就是它是否panic的验证
CLI_Init(); //读取command line 的功能修改命令
Fetch_Init(); // 根据cli结果设置fetch方式
CNT_Init(); //cache_center.c,有注释，但是不是很清楚其中作用
VCL_Init(); //加载vcl的选项，利用vcl动态编译后的文件
HTTP_Init(); //http头的一些描述
SES_Init(); //work周期初始化
VBE_Init();//对backend状态的初始化
VBP_Init();//这个还得琢磨琢磨
WRK_Init(); //这个可是重头戏
EXP_Init()// 初始化expire线程
HSH_Init(); //hash存储模块初始化
BAN_Init(); //疑似为限定条件条件初始
VCA_Init();// hash接收器？？
SMS_Init();//存储互斥综合体？？
STV_open(); //搬运？？
VSL_stats->start_time = (time_t)TIM_real(); //Varnish Share-memory Log 设置启动时间
CLI_Run(); //安照commande-line的启动
printf("Child dies\n");
}
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