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esp_http_server/lru_counter_for_timestamp:Added LRU counter for timer

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Replaced the os timer in http server by LRU counter. The timestamp is
unnecessary for LRU.
This commit is contained in:
Supreet Deshpande
2019-01-30 19:57:02 +05:30
committed by bot
parent 5ec58c316d
commit 4c8e997289
4 changed files with 21 additions and 20 deletions
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16
components/esp_http_server/include/esp_http_server.h
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@@ -623,7 +623,7 @@ esp_err_t httpd_sess_set_pending_override(httpd_handle_t hd, int sockfd, httpd_p
* session socket fd, from within a URI handler, ie. :
* httpd_sess_get_ctx(),
* httpd_sess_trigger_close(),
* httpd_sess_update_timestamp().
* httpd_sess_update_lru_counter().
*
* @note This API is supposed to be called only from the context of
* a URI handler where httpd_req_t* request pointer is valid.
@@ -1215,15 +1215,15 @@ void *httpd_get_global_transport_ctx(httpd_handle_t handle);
esp_err_t httpd_sess_trigger_close(httpd_handle_t handle, int sockfd);
/**
* @brief Update timestamp for a given socket
* @brief Update LRU counter for a given socket
*
* Timestamps are internally associated with each session to monitor
* LRU Counters are internally associated with each session to monitor
* how recently a session exchanged traffic. When LRU purge is enabled,
* if a client is requesting for connection but maximum number of
* sockets/sessions is reached, then the session having the earliest
* timestamp is closed automatically.
* LRU counter is closed automatically.
*
* Updating the timestamp manually prevents the socket from being purged
* Updating the LRU counter manually prevents the socket from being purged
* due to the Least Recently Used (LRU) logic, even though it might not
* have received traffic for some time. This is useful when all open
* sockets/session are frequently exchanging traffic but the user specifically
@@ -1234,15 +1234,15 @@ esp_err_t httpd_sess_trigger_close(httpd_handle_t handle, int sockfd);
* is enabled.
*
* @param[in] handle Handle to server returned by httpd_start
* @param[in] sockfd The socket descriptor of the session for which timestamp
* @param[in] sockfd The socket descriptor of the session for which LRU counter
* is to be updated
*
* @return
* - ESP_OK : Socket found and timestamp updated
* - ESP_OK : Socket found and LRU counter updated
* - ESP_ERR_NOT_FOUND : Socket not found
* - ESP_ERR_INVALID_ARG : Null arguments
*/
esp_err_t httpd_sess_update_timestamp(httpd_handle_t handle, int sockfd);
esp_err_t httpd_sess_update_lru_counter(httpd_handle_t handle, int sockfd);
/** End of Session
* @}