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src/core/ngx_module.c - nginx source code
Global variables defined
Functions defined
Macros defined
Source code
- #include <ngx_config.h>
- #include <ngx_core.h>
- #define NGX_MAX_DYNAMIC_MODULES 128
- static ngx_uint_t ngx_module_index(ngx_cycle_t *cycle);
- static ngx_uint_t ngx_module_ctx_index(ngx_cycle_t *cycle, ngx_uint_t type,
- ngx_uint_t index);
- ngx_uint_t ngx_max_module;
- static ngx_uint_t ngx_modules_n;
- ngx_int_t
- ngx_preinit_modules(void)
- {
- ngx_uint_t i;
- for (i = 0; ngx_modules[i]; i++) {
- ngx_modules[i]->index = i;
- ngx_modules[i]->name = ngx_module_names[i];
- }
- ngx_modules_n = i;
- ngx_max_module = ngx_modules_n + NGX_MAX_DYNAMIC_MODULES;
- return NGX_OK;
- }
- ngx_int_t
- ngx_cycle_modules(ngx_cycle_t *cycle)
- {
-
- 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;
- }
- ngx_int_t
- ngx_init_modules(ngx_cycle_t *cycle)
- {
- ngx_uint_t i;
- for (i = 0; cycle->modules[i]; i++) {
- if (cycle->modules[i]->init_module) {
- if (cycle->modules[i]->init_module(cycle) != NGX_OK) {
- return NGX_ERROR;
- }
- }
- }
- return NGX_OK;
- }
- ngx_int_t
- ngx_count_modules(ngx_cycle_t *cycle, ngx_uint_t type)
- {
- ngx_uint_t i, next, max;
- ngx_module_t *module;
- next = 0;
- max = 0;
-
- for (i = 0; cycle->modules[i]; i++) {
- module = cycle->modules[i];
- if (module->type != type) {
- continue;
- }
- if (module->ctx_index != NGX_MODULE_UNSET_INDEX) {
-
- if (module->ctx_index > max) {
- max = module->ctx_index;
- }
- if (module->ctx_index == next) {
- next++;
- }
- continue;
- }
-
- module->ctx_index = ngx_module_ctx_index(cycle, type, next);
- if (module->ctx_index > max) {
- max = module->ctx_index;
- }
- next = module->ctx_index + 1;
- }
-
- if (cycle->old_cycle && cycle->old_cycle->modules) {
- for (i = 0; cycle->old_cycle->modules[i]; i++) {
- module = cycle->old_cycle->modules[i];
- if (module->type != type) {
- continue;
- }
- if (module->ctx_index > max) {
- max = module->ctx_index;
- }
- }
- }
-
- cycle->modules_used = 1;
- return max + 1;
- }
- ngx_int_t
- ngx_add_module(ngx_conf_t *cf, ngx_str_t *file, ngx_module_t *module,
- char **order)
- {
- void *rv;
- ngx_uint_t i, m, before;
- ngx_core_module_t *core_module;
- if (cf->cycle->modules_n >= ngx_max_module) {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "too many modules loaded");
- return NGX_ERROR;
- }
- if (module->version != nginx_version) {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "module \"%V\" version %ui instead of %ui",
- file, module->version, (ngx_uint_t) nginx_version);
- return NGX_ERROR;
- }
- if (ngx_strcmp(module->signature, NGX_MODULE_SIGNATURE) != 0) {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "module \"%V\" is not binary compatible",
- file);
- return NGX_ERROR;
- }
- for (m = 0; cf->cycle->modules[m]; m++) {
- if (ngx_strcmp(cf->cycle->modules[m]->name, module->name) == 0) {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "module \"%s\" is already loaded",
- module->name);
- return NGX_ERROR;
- }
- }
-
- if (module->index == NGX_MODULE_UNSET_INDEX) {
- module->index = ngx_module_index(cf->cycle);
- if (module->index >= ngx_max_module) {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "too many modules loaded");
- return NGX_ERROR;
- }
- }
-
- before = cf->cycle->modules_n;
- if (order) {
- for (i = 0; order[i]; i++) {
- if (ngx_strcmp(order[i], module->name) == 0) {
- i++;
- break;
- }
- }
- for ( ; order[i]; i++) {
- #if 0
- #endif
- for (m = 0; m < before; m++) {
- if (ngx_strcmp(cf->cycle->modules[m]->name, order[i]) == 0) {
- ngx_log_debug3(NGX_LOG_DEBUG_CORE, cf->log, 0,
- "module: %s before %s:%i",
- module->name, order[i], m);
- before = m;
- break;
- }
- }
- }
- }
-
- if (before != cf->cycle->modules_n) {
- ngx_memmove(&cf->cycle->modules[before + 1],
- &cf->cycle->modules[before],
- (cf->cycle->modules_n - before) * sizeof(ngx_module_t *));
- }
- cf->cycle->modules[before] = module;
- cf->cycle->modules_n++;
- if (module->type == NGX_CORE_MODULE) {
-
- core_module = module->ctx;
- if (core_module->create_conf) {
- rv = core_module->create_conf(cf->cycle);
- if (rv == NULL) {
- return NGX_ERROR;
- }
- cf->cycle->conf_ctx[module->index] = rv;
- }
- }
- return NGX_OK;
- }
- static ngx_uint_t
- ngx_module_index(ngx_cycle_t *cycle)
- {
- ngx_uint_t i, index;
- ngx_module_t *module;
- index = 0;
- again:
-
- for (i = 0; cycle->modules[i]; i++) {
- module = cycle->modules[i];
- if (module->index == index) {
- index++;
- goto again;
- }
- }
-
- if (cycle->old_cycle && cycle->old_cycle->modules) {
- for (i = 0; cycle->old_cycle->modules[i]; i++) {
- module = cycle->old_cycle->modules[i];
- if (module->index == index) {
- index++;
- goto again;
- }
- }
- }
- return index;
- }
- static ngx_uint_t
- ngx_module_ctx_index(ngx_cycle_t *cycle, ngx_uint_t type, ngx_uint_t index)
- {
- ngx_uint_t i;
- ngx_module_t *module;
- again:
-
- for (i = 0; cycle->modules[i]; i++) {
- module = cycle->modules[i];
- if (module->type != type) {
- continue;
- }
- if (module->ctx_index == index) {
- index++;
- goto again;
- }
- }
-
- if (cycle->old_cycle && cycle->old_cycle->modules) {
- for (i = 0; cycle->old_cycle->modules[i]; i++) {
- module = cycle->old_cycle->modules[i];
- if (module->type != type) {
- continue;
- }
- if (module->ctx_index == index) {
- index++;
- goto again;
- }
- }
- }
- return index;
- }
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