Ubuntu 下 nginx-1.24.0 源碼分析 - ngx_cycle_modules-CSDN博客?

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定義在?src/core/ngx_module.c

ngx_int_t
ngx_cycle_modules(ngx_cycle_t *cycle)
{/** create a list of modules to be used for this cycle,* copy static modules to it*/cycle->modules = ngx_pcalloc(cycle->pool, (ngx_max_module + 1)* sizeof(ngx_module_t *));if (cycle->modules == NULL) {return NGX_ERROR;}ngx_memcpy(cycle->modules, ngx_modules,ngx_modules_n * sizeof(ngx_module_t *));cycle->modules_n = ngx_modules_n;return NGX_OK;
}

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    cycle->modules = ngx_pcalloc(cycle->pool, (ngx_max_module + 1)* sizeof(ngx_module_t *));if (cycle->modules == NULL) {return NGX_ERROR;}

在?cycle?的內存池中分配內存，存儲模塊指針數組

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ngx_max_module + 1：ngx_max_module?是最大模塊數，+1?用于預留終止標記（?NULL）

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    ngx_memcpy(cycle->modules, ngx_modules,ngx_modules_n * sizeof(ngx_module_t *));

?將全局模塊數組?ngx_modules?拷貝到?cycle->modules

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cycle->modules_n = ngx_modules_n;

將全局模塊數量?ngx_modules_n?賦值給?cycle->modules_n

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return NGX_OK;

返回?NGX_OK，代表 成功

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