mirror of
https://github.com/apache/httpd.git
synced 2026-01-26 19:01:35 +03:00
0ba63f0532
that the size and members can be derrived by the most stable elements, followed by derived elements. [Harrie Hazewinkel] git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@89326 13f79535-47bb-0310-9956-ffa450edef68
237 lines
8.7 KiB
C
237 lines
8.7 KiB
C
/* ====================================================================
|
|
* The Apache Software License, Version 1.1
|
|
*
|
|
* Copyright (c) 2000-2001 The Apache Software Foundation. All rights
|
|
* reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* 3. The end-user documentation included with the redistribution,
|
|
* if any, must include the following acknowledgment:
|
|
* "This product includes software developed by the
|
|
* Apache Software Foundation (http://www.apache.org/)."
|
|
* Alternately, this acknowledgment may appear in the software itself,
|
|
* if and wherever such third-party acknowledgments normally appear.
|
|
*
|
|
* 4. The names "Apache" and "Apache Software Foundation" must
|
|
* not be used to endorse or promote products derived from this
|
|
* software without prior written permission. For written
|
|
* permission, please contact apache@apache.org.
|
|
*
|
|
* 5. Products derived from this software may not be called "Apache",
|
|
* nor may "Apache" appear in their name, without prior written
|
|
* permission of the Apache Software Foundation.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
|
|
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
|
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
|
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
* ====================================================================
|
|
*
|
|
* This software consists of voluntary contributions made by many
|
|
* individuals on behalf of the Apache Software Foundation. For more
|
|
* information on the Apache Software Foundation, please see
|
|
* <http://www.apache.org/>.
|
|
*
|
|
* Portions of this software are based upon public domain software
|
|
* originally written at the National Center for Supercomputing Applications,
|
|
* University of Illinois, Urbana-Champaign.
|
|
*/
|
|
|
|
#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 "mpm_default.h" /* For HARD_.*_LIMIT */
|
|
#include "apr_thread_proc.h"
|
|
#include "apr_portable.h"
|
|
|
|
/* 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_GRACEFUL 8 /* server is gracefully finishing request */
|
|
#define SERVER_ACCEPTING 9 /* thread is accepting connections */
|
|
#define SERVER_QUEUEING 10 /* thread is putting connection on the queue */
|
|
#define SERVER_IDLE_KILL 11 /* Server is cleaning up idle children. */
|
|
#define SERVER_NUM_STATUS 12 /* 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. For
|
|
* example, the vhostrec pointer in the scoreboard below is valid in all
|
|
* children of the same generation.
|
|
*
|
|
* The safe way to access the vhost pointer is like this:
|
|
*
|
|
* worker_score *ss = pointer to whichver slot is interesting;
|
|
* process_score *ps = pointer to whichver slot is interesting;
|
|
* server_rec *vh = ss->vhostrec;
|
|
*
|
|
* if (ps->generation != ap_my_generation) {
|
|
* vh = NULL;
|
|
* }
|
|
*
|
|
* then if vh is not NULL it's valid in this child.
|
|
*
|
|
* This avoids various race conditions around restarts.
|
|
*/
|
|
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_SHARED = 1,
|
|
SB_NOT_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;
|
|
unsigned long bytes_served;
|
|
unsigned long my_access_count;
|
|
unsigned long my_bytes_served;
|
|
unsigned long 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... */
|
|
server_rec *vhostrec; /* What virtual host is being accessed? */
|
|
/* SEE ABOVE FOR SAFE USAGE! */
|
|
worker_score *next;
|
|
};
|
|
|
|
typedef struct {
|
|
ap_scoreboard_e sb_type;
|
|
ap_generation_t running_generation; /* the generation of children which
|
|
* should still be serving requests. */
|
|
} 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;
|
|
unsigned short process_status; /* Either SB_WORKING or SB_IDLE_DIE */
|
|
int worker_threads;
|
|
worker_score *worker_head;
|
|
process_score *next;
|
|
};
|
|
|
|
typedef struct {
|
|
global_score global;
|
|
process_score parent[HARD_SERVER_LIMIT];
|
|
worker_score servers[HARD_SERVER_LIMIT][HARD_THREAD_LIMIT];
|
|
} scoreboard;
|
|
|
|
#define KEY_LENGTH 16
|
|
#define VALUE_LENGTH 64
|
|
typedef struct {
|
|
char key[KEY_LENGTH];
|
|
char value[VALUE_LENGTH];
|
|
} status_table_entry;
|
|
|
|
#define SCOREBOARD_SIZE sizeof(scoreboard)
|
|
#ifdef TPF
|
|
#define SCOREBOARD_NAME "SCOREBRD"
|
|
#define SCOREBOARD_FRAMES SCOREBOARD_SIZE/4095 + 1
|
|
#endif
|
|
|
|
AP_DECLARE(int) ap_exists_scoreboard_image(void);
|
|
AP_DECLARE(void) ap_create_scoreboard(apr_pool_t *p, ap_scoreboard_e t);
|
|
AP_DECLARE(void) ap_increment_counts(int child_num, int thread_num, request_rec *r);
|
|
|
|
apr_status_t ap_cleanup_scoreboard(void *d);
|
|
|
|
AP_DECLARE(void) reopen_scoreboard(apr_pool_t *p);
|
|
|
|
void ap_sync_scoreboard_image(void);
|
|
|
|
void update_scoreboard_global(void);
|
|
AP_DECLARE(int) find_child_by_pid(apr_proc_t *pid);
|
|
int ap_update_child_status(int child_num, int thread_num, int status, request_rec *r);
|
|
void ap_time_process_request(int child_num, int thread_num, int status);
|
|
|
|
|
|
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 apr_time_t ap_restart_time;
|
|
|
|
AP_DECLARE_DATA extern ap_generation_t volatile ap_my_generation;
|
|
|
|
/* for time_process_request() in http_main.c */
|
|
#define START_PREQUEST 1
|
|
#define STOP_PREQUEST 2
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* !APACHE_SCOREBOARD_H */
|