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Diffstat (limited to 'rubbos/app/httpd-2.0.64/include/scoreboard.h')
| -rw-r--r-- | rubbos/app/httpd-2.0.64/include/scoreboard.h | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/rubbos/app/httpd-2.0.64/include/scoreboard.h b/rubbos/app/httpd-2.0.64/include/scoreboard.h new file mode 100644 index 00000000..6ca18582 --- /dev/null +++ b/rubbos/app/httpd-2.0.64/include/scoreboard.h @@ -0,0 +1,197 @@ +/* Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef APACHE_SCOREBOARD_H +#define APACHE_SCOREBOARD_H + +#ifdef __cplusplus +extern "C" { +#endif + +#ifdef HAVE_SYS_TIMES_H +#include <sys/time.h> +#include <sys/times.h> +#elif defined(TPF) +#include <time.h> +#endif + +#include "ap_config.h" +#include "apr_hooks.h" +#include "apr_thread_proc.h" +#include "apr_portable.h" +#include "apr_shm.h" + +/* Scoreboard file, if there is one */ +#ifndef DEFAULT_SCOREBOARD +#define DEFAULT_SCOREBOARD "logs/apache_runtime_status" +#endif + +/* Scoreboard info on a process is, for now, kept very brief --- + * just status value and pid (the latter so that the caretaker process + * can properly update the scoreboard when a process dies). We may want + * to eventually add a separate set of long_score structures which would + * give, for each process, the number of requests serviced, and info on + * the current, or most recent, request. + * + * Status values: + */ + +#define SERVER_DEAD 0 +#define SERVER_STARTING 1 /* Server Starting up */ +#define SERVER_READY 2 /* Waiting for connection (or accept() lock) */ +#define SERVER_BUSY_READ 3 /* Reading a client request */ +#define SERVER_BUSY_WRITE 4 /* Processing a client request */ +#define SERVER_BUSY_KEEPALIVE 5 /* Waiting for more requests via keepalive */ +#define SERVER_BUSY_LOG 6 /* Logging the request */ +#define SERVER_BUSY_DNS 7 /* Looking up a hostname */ +#define SERVER_CLOSING 8 /* Closing the connection */ +#define SERVER_GRACEFUL 9 /* server is gracefully finishing request */ +#define SERVER_IDLE_KILL 10 /* Server is cleaning up idle children. */ +#define SERVER_NUM_STATUS 11 /* number of status settings */ + +/* Type used for generation indicies. Startup and every restart cause a + * new generation of children to be spawned. Children within the same + * generation share the same configuration information -- pointers to stuff + * created at config time in the parent are valid across children. However, + * this can't work effectively with non-forked architectures. So while the + * arrays in the scoreboard never change between the parent and forked + * children, so they do not require shm storage, the contents of the shm + * may contain no pointers. + */ +typedef int ap_generation_t; + +/* Is the scoreboard shared between processes or not? + * Set by the MPM when the scoreboard is created. + */ +typedef enum { + SB_NOT_SHARED = 1, + SB_SHARED = 2 +} ap_scoreboard_e; + +#define SB_WORKING 0 /* The server is busy and the child is useful. */ +#define SB_IDLE_DIE 1 /* The server is idle and the child is superfluous. */ + /* The child should check for this and exit gracefully. */ + +/* stuff which is worker specific */ +/***********************WARNING***************************************/ +/* These are things that are used by mod_status. Do not put anything */ +/* in here that you cannot live without. This structure will not */ +/* be available if mod_status is not loaded. */ +/*********************************************************************/ +typedef struct worker_score worker_score; + +struct worker_score { + int thread_num; +#if APR_HAS_THREADS + apr_os_thread_t tid; +#endif + unsigned char status; + unsigned long access_count; + apr_off_t bytes_served; + unsigned long my_access_count; + apr_off_t my_bytes_served; + apr_off_t conn_bytes; + unsigned short conn_count; + apr_time_t start_time; + apr_time_t stop_time; +#ifdef HAVE_TIMES + struct tms times; +#endif + apr_time_t last_used; + char client[32]; /* Keep 'em small... */ + char request[64]; /* We just want an idea... */ + char vhost[32]; /* What virtual host is being accessed? */ +}; + +typedef struct { + int server_limit; + int thread_limit; + ap_scoreboard_e sb_type; + ap_generation_t running_generation; /* the generation of children which + * should still be serving requests. */ + apr_time_t restart_time; +} global_score; + +/* stuff which the parent generally writes and the children rarely read */ +typedef struct process_score process_score; +struct process_score{ + pid_t pid; + ap_generation_t generation; /* generation of this child */ + ap_scoreboard_e sb_type; + int quiescing; /* the process whose pid is stored above is + * going down gracefully + */ +}; + +/* Scoreboard is now in 'local' memory, since it isn't updated once created, + * even in forked architectures. Child created-processes (non-fork) will + * set up these indicies into the (possibly relocated) shmem records. + */ +typedef struct { + global_score *global; + process_score *parent; + worker_score **servers; +} scoreboard; + +typedef struct ap_sb_handle_t ap_sb_handle_t; + +AP_DECLARE(int) ap_exists_scoreboard_image(void); +AP_DECLARE(void) ap_increment_counts(ap_sb_handle_t *sbh, request_rec *r); + +int ap_create_scoreboard(apr_pool_t *p, ap_scoreboard_e t); +apr_status_t ap_reopen_scoreboard(apr_pool_t *p, apr_shm_t **shm, int detached); +void ap_init_scoreboard(void *shared_score); +AP_DECLARE(int) ap_calc_scoreboard_size(void); +apr_status_t ap_cleanup_scoreboard(void *d); + +AP_DECLARE(void) ap_create_sb_handle(ap_sb_handle_t **new_sbh, apr_pool_t *p, + int child_num, int thread_num); + +AP_DECLARE(int) find_child_by_pid(apr_proc_t *pid); +AP_DECLARE(int) ap_update_child_status(ap_sb_handle_t *sbh, int status, request_rec *r); +AP_DECLARE(int) ap_update_child_status_from_indexes(int child_num, int thread_num, + int status, request_rec *r); +void ap_time_process_request(ap_sb_handle_t *sbh, int status); + +AP_DECLARE(worker_score *) ap_get_scoreboard_worker(int x, int y); +AP_DECLARE(process_score *) ap_get_scoreboard_process(int x); +AP_DECLARE(global_score *) ap_get_scoreboard_global(void); + +AP_DECLARE_DATA extern scoreboard *ap_scoreboard_image; +AP_DECLARE_DATA extern const char *ap_scoreboard_fname; +AP_DECLARE_DATA extern int ap_extended_status; + +AP_DECLARE_DATA extern ap_generation_t volatile ap_my_generation; + +/* Hooks */ +/** + * Hook for post scoreboard creation, pre mpm. + * @param p Apache pool to allocate from. + * @param sb_type + * @ingroup hooks + * @return OK or DECLINE on success; anything else is a error + */ +AP_DECLARE_HOOK(int, pre_mpm, (apr_pool_t *p, ap_scoreboard_e sb_type)) + +/* for time_process_request() in http_main.c */ +#define START_PREQUEST 1 +#define STOP_PREQUEST 2 + +#ifdef __cplusplus +} +#endif + +#endif /* !APACHE_SCOREBOARD_H */ |