Analysis of event module initialization source code of nginx
This article mainly introduces "nginx event module initialization source code analysis". In daily operation, I believe that many people have doubts about nginx event module initialization source code analysis. Xiaobian consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts of "nginx event module initialization source code analysis". Next, please follow the editor to study!
Let's take a look at the code for the create_conf functions of each module.
This is the create_conf function of the ngx_event_core_module module.
/ / create a structure to store the event module configuration
Static void * ngx_event_create_conf (ngx_cycle_t * cycle)
{
Ngx_event_conf_t * ecf
Ngx_test_null (ecf, ngx_palloc (cycle- > pool, sizeof (ngx_event_conf_t))
NGX_CONF_ERROR)
Ecf- > connections = NGX_CONF_UNSET_UINT
Ecf- > use = NGX_CONF_UNSET_UINT
Ecf- > multi_accept = NGX_CONF_UNSET
Ecf- > accept_mutex = NGX_CONF_UNSET
Ecf- > accept_mutex_delay = NGX_CONF_UNSET_MSEC
Ecf- > name = (void *) NGX_CONF_UNSET
# if (NGX_DEBUG)
Ngx_init_array (ecf- > debug_connection, cycle- > pool, 5, sizeof (in_addr_t))
NGX_CONF_ERROR)
# endif
Return ecf
}
The remaining eventful submodules are event-driven, and the create_conf function of epoll is as follows.
Static void * ngx_epoll_create_conf (ngx_cycle_t * cycle)
{
Ngx_epoll_conf_t * epcf
Ngx_test_null (epcf, ngx_palloc (cycle- > pool, sizeof (ngx_epoll_conf_t))
NGX_CONF_ERROR)
Epcf- > events = NGX_CONF_UNSET
Return epcf
}
Kqueue's are as follows.
Static void * ngx_kqueue_create_conf (ngx_cycle_t * cycle)
{
Ngx_kqueue_conf_t * kcf
Ngx_test_null (kcf, ngx_palloc (cycle- > pool, sizeof (ngx_kqueue_conf_t))
NGX_CONF_ERROR)
Kcf- > changes = NGX_CONF_UNSET
Kcf- > events = NGX_CONF_UNSET
Return kcf
}
Some sub-modules do not implement the create_conf function, after the create_conf function of all modules is executed.
At this point, on the "nginx event module initialization source code analysis" on the end of the study, I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!
