Nginx(二): worker 进程处理流程框架
作者：互联网
Nginx(二): worker 进程处理流程框架Nginx 启动起来之后，会有几个进程运行：1. master 进程接收用户命令并做出响应; 2. worker 进程负责处理各网络事件，并同时接收来自master的处理协调命令；
master 主要是一控制命令，我们后面再说，而worker则是处理的nginx的核心任务，请求转发、反向代理、负载均衡等工作。所以我们先来啃啃worker这块硬骨头吧！
生活中我们使用的数字都是十进制的，而二进制是机器能够识别的最直接的语言。但是二进制又太大，记录起来非常的不方便。所以通常会将二进制转化为八进制或者十六进制。
日常生活中我们所说的数字 （十进制）在0~9之间，同理 二进制的范围是01，八进制的范围07，十六进制的范围0~15。 那问题来了，当超过9之后，十六进制该如何表示呢？ 答案是用af，表示对应的1015
进制的表达
在Python中该如何表示每一种进制呢？
默认输入的数字为十进制
以0b开头的数字表示二进制
以0o开头的数字表示八进制
以0x开头的数字表示十六进制
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返回顶部
- worker 主循环
worker 的启动是被master 操作的，作为一个 fork 出来的进程，它拥有和master一样的内存数据信息。但它的活动范围相对较小，所以它并不会替代master的位置。
复制代码
// unix/ngx_process_cycle.c
void
ngx_master_process_cycle(ngx_cycle_t *cycle)
{
char *title;
u_char *p;
size_t size;
ngx_int_t i;
ngx_uint_t sigio;
sigset_t set;
struct itimerval itv;
ngx_uint_t live;
ngx_msec_t delay;
ngx_core_conf_t *ccf;
sigemptyset(&set);
sigaddset(&set, SIGCHLD);
sigaddset(&set, SIGALRM);
sigaddset(&set, SIGIO);
sigaddset(&set, SIGINT);
sigaddset(&set, ngx_signal_value(NGX_RECONFIGURE_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_REOPEN_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_NOACCEPT_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_TERMINATE_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_CHANGEBIN_SIGNAL));标签：newsmth,exp,流程,worker,topic,Nginx,https,article,net 来源： https://www.cnblogs.com/masr/p/13660032.html