C++ (Cpp) ngx_http_file_cache_loader_sleep примеры использования

Пример #1

Файл: ngx_http_file_cache.c Проект: xdutaotao/u-nginx

static ngx_int_t
ngx_http_file_cache_manage_file(ngx_tree_ctx_t *ctx, ngx_str_t *path)
{
    ngx_msec_t              elapsed;
    ngx_http_file_cache_t  *cache;

    cache = ctx->data;

    if (ngx_http_file_cache_add_file(ctx, path) != NGX_OK) {
        (void) ngx_http_file_cache_delete_file(ctx, path);
    }

    if (++cache->files >= cache->loader_files) {
        ngx_http_file_cache_loader_sleep(cache);

    } else {
        ngx_time_update();

        elapsed = ngx_abs((ngx_msec_int_t) (ngx_current_msec - cache->last));

        ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
                       "http file cache loader time elapsed: %M", elapsed);

        if (elapsed >= cache->loader_threshold) {
            ngx_http_file_cache_loader_sleep(cache);
        }
    }

    return (ngx_quit || ngx_terminate) ? NGX_ABORT : NGX_OK;
}

Пример #2

Файл: ngx_http_file_cache.c Проект: feifei435/nginx-source-analysis

/*	将文件添加到系统的file_cache管理中
 *	参数path:	为普通文件的完整路径
 */
static ngx_int_t
ngx_http_file_cache_manage_file(ngx_tree_ctx_t *ctx, ngx_str_t *path)
{
    ngx_msec_t              elapsed;
    ngx_http_file_cache_t  *cache;

    cache = ctx->data;

	//	添加文件到file_cache中，建立node节点在红黑树中
    if (ngx_http_file_cache_add_file(ctx, path) != NGX_OK) {
        (void) ngx_http_file_cache_delete_file(ctx, path);
    }

	//	统计缓存文件并检查是否达到系统限制
    if (++cache->files >= cache->loader_files) {

		//	why?? 为什么加载的cache文件达到限制后，将休眠并将 cache->files 的个数清零呢？？？
        ngx_http_file_cache_loader_sleep(cache);

    } else {
        ngx_time_update();

        elapsed = ngx_abs((ngx_msec_int_t) (ngx_current_msec - cache->last));

        ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
                       "http file cache loader time elapsed: %M", elapsed);

        if (elapsed >= cache->loader_threshold) {
            ngx_http_file_cache_loader_sleep(cache);
        }
    }

    return (ngx_quit || ngx_terminate) ? NGX_ABORT : NGX_OK;
}