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Posted to cvs@httpd.apache.org by bn...@apache.org on 2001/10/17 01:27:05 UTC
cvs commit: httpd-2.0/server/mpm/netware mpm_netware.c mpm_default.h mpm.h
bnicholes 01/10/16 16:27:05
Added: server/mpm/netware mpm_netware.c mpm_default.h mpm.h
Log:
First cut at the MPM for NetWare
Revision Changes Path
1.1 httpd-2.0/server/mpm/netware/mpm_netware.c
Index: mpm_netware.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.
*/
/*
* httpd.c: simple http daemon for answering WWW file requests
*
*
* 03-21-93 Rob McCool wrote original code (up to NCSA HTTPd 1.3)
*
* 03-06-95 blong
* changed server number for child-alone processes to 0 and changed name
* of processes
*
* 03-10-95 blong
* Added numerous speed hacks proposed by Robert S. Thau (rst@ai.mit.edu)
* including set group before fork, and call gettime before to fork
* to set up libraries.
*
* 04-14-95 rst / rh
* Brandon's code snarfed from NCSA 1.4, but tinkered to work with the
* Apache server, and also to have child processes do accept() directly.
*
* April-July '95 rst
* Extensive rework for Apache.
*/
/* TODO: this is a cobbled together prefork MPM example... it should mostly
* TODO: behave like apache-1.3... here's a short list of things I think
* TODO: need cleaning up still:
*/
#include "apr.h"
#include "apr_portable.h"
#include "apr_strings.h"
#include "apr_thread_proc.h"
#include "apr_signal.h"
#include "apr_tables.h"
#include "apr_getopt.h"
#define APR_WANT_STDIO
#define APR_WANT_STRFUNC
#include "apr_want.h"
#if APR_HAVE_UNISTD_H
#include <unistd.h>
#endif
#if APR_HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#define CORE_PRIVATE
#include "ap_config.h"
#include "httpd.h"
#include "mpm_default.h"
#include "http_main.h"
#include "http_log.h"
#include "http_config.h"
#include "http_core.h" /* for get_remote_host */
#include "http_connection.h"
#include "scoreboard.h"
#include "ap_mpm.h"
#include "mpm_common.h"
#include "ap_listen.h"
#include "ap_mmn.h"
#ifdef HAVE_TIME_H
#include <time.h>
#endif
#include <signal.h>
#define WORKER_DEAD SERVER_DEAD
#define WORKER_STARTING SERVER_STARTING
#define WORKER_READY SERVER_READY
/* config globals */
int ap_threads_per_child=0; /* Worker threads per child */
int ap_thread_stack_size=65536;
static apr_lock_t *accept_lock;
static int ap_threads_to_start=0;
static int ap_threads_min_free=0;
static int ap_threads_max_free=0;
static int ap_threads_limit=0;
/*
* The max child slot ever assigned, preserved across restarts. Necessary
* to deal with MaxClients changes across SIGWINCH restarts. We use this
* value to optimize routines that have to scan the entire scoreboard.
*/
int ap_max_workers_limit = -1;
server_rec *ap_server_conf;
/* *Non*-shared http_main globals... */
static apr_socket_t *sd;
static fd_set listenfds;
static int listenmaxfd;
/* one_process --- debugging mode variable; can be set from the command line
* with the -X flag. If set, this gets you the child_main loop running
* in the process which originally started up (no detach, no make_child),
* which is a pretty nice debugging environment. (You'll get a SIGHUP
* early in standalone_main; just continue through. This is the server
* trying to kill off any child processes which it might have lying
* around --- Apache doesn't keep track of their pids, it just sends
* SIGHUP to the process group, ignoring it in the root process.
* Continue through and you'll be fine.).
*/
static int one_process = 0;
static apr_pool_t *pconf; /* Pool for config stuff */
static apr_pool_t *pmain; /* Pool for httpd child stuff */
static pid_t ap_my_pid; /* it seems silly to call getpid all the time */
static pid_t parent_pid;
#ifndef MULTITHREAD
static int my_child_num;
#endif
static int die_now = 0;
static apr_lock_t *accept_mutex = NULL;
/* Keep track of the number of worker threads currently active */
static int worker_thread_count;
static apr_lock_t *worker_thread_count_mutex;
#ifdef GPROF
/*
* change directory for gprof to plop the gmon.out file
* configure in httpd.conf:
* GprofDir logs/ -> $ServerRoot/logs/gmon.out
* GprofDir logs/% -> $ServerRoot/logs/gprof.$pid/gmon.out
*/
static void chdir_for_gprof(void)
{
core_server_config *sconf =
ap_get_module_config(ap_server_conf->module_config, &core_module);
char *dir = sconf->gprof_dir;
const char *use_dir;
if(dir) {
apr_status_t res;
char buf[512];
int len = strlen(sconf->gprof_dir) - 1;
if(*(dir + len) == '%') {
dir[len] = '\0';
apr_snprintf(buf, sizeof(buf), "%sgprof.%d", dir, (int)getpid());
}
use_dir = ap_server_root_relative(pconf, buf[0] ? buf : dir);
res = apr_dir_make(use_dir, 0755, pconf);
if(res != APR_SUCCESS && !APR_STATUS_IS_EEXIST(res)) {
ap_log_error(APLOG_MARK, APLOG_ERR, errno, ap_server_conf,
"gprof: error creating directory %s", dir);
}
}
else {
use_dir = ap_server_root_relative(pconf, "logs");
}
chdir(dir);
}
#else
#define chdir_for_gprof()
#endif
/* XXX - I don't know if TPF will ever use this module or not, so leave
* the ap_check_signals calls in but disable them - manoj */
#define ap_check_signals()
/* a clean exit from a child with proper cleanup */
static void clean_child_exit(int code) __attribute__ ((noreturn));
static void clean_child_exit(int code)
{
apr_thread_mutex_lock(worker_thread_count_mutex);
worker_thread_count--;
apr_thread_mutex_unlock(worker_thread_count_mutex);
NXThreadExit((void*)&code);
}
static apr_status_t accept_mutex_child_cleanup(void *foo)
{
return apr_thread_mutex_unlock(accept_mutex);
}
/* Initialize mutex lock.
* Done by each child at its birth
*/
static void accept_mutex_child_init(apr_pool_t *p)
{
apr_pool_cleanup_register(p, NULL, accept_mutex_child_cleanup, apr_pool_cleanup_null);
}
static void accept_mutex_on(void)
{
apr_status_t rc = apr_thread_mutex_lock(accept_mutex);
if (rc != APR_SUCCESS) {
ap_log_error(APLOG_MARK, APLOG_EMERG, rc, ap_server_conf,
"Error getting accept lock. Exiting!");
clean_child_exit(APEXIT_CHILDFATAL);
}
}
static void accept_mutex_off(void)
{
apr_status_t rc = apr_thread_mutex_unlock(accept_mutex);
if (rc != APR_SUCCESS) {
ap_log_error(APLOG_MARK, APLOG_EMERG, rc, ap_server_conf,
"Error freeing accept lock. Exiting!");
clean_child_exit(APEXIT_CHILDFATAL);
}
}
/* On some architectures it's safe to do unserialized accept()s in the single
* Listen case. But it's never safe to do it in the case where there's
* multiple Listen statements. Define SINGLE_LISTEN_UNSERIALIZED_ACCEPT
* when it's safe in the single Listen case.
*/
#ifdef SINGLE_LISTEN_UNSERIALIZED_ACCEPT
#define SAFE_ACCEPT(stmt) do {if (ap_listeners->next) {stmt;}} while(0)
#else
#define SAFE_ACCEPT(stmt) do {stmt;} while(0)
#endif
//#ifdef NO_SERIALIZED_ACCEPT
//#define SAFE_ACCEPT(stmt) APR_SUCCESS
//#else
//#define SAFE_ACCEPT(stmt) (stmt)
//#endif
AP_DECLARE(apr_status_t) ap_mpm_query(int query_code, int *result)
{
switch(query_code){
case AP_MPMQ_MAX_DAEMON_USED:
*result = ap_threads_limit;
return APR_SUCCESS;
case AP_MPMQ_IS_THREADED:
*result = AP_MPMQ_NOT_SUPPORTED;
return APR_SUCCESS;
case AP_MPMQ_IS_FORKED:
*result = AP_MPMQ_DYNAMIC;
return APR_SUCCESS;
case AP_MPMQ_HARD_LIMIT_DAEMONS:
*result = HARD_SERVER_LIMIT;
return APR_SUCCESS;
case AP_MPMQ_HARD_LIMIT_THREADS:
*result = HARD_THREAD_LIMIT;
return APR_SUCCESS;
case AP_MPMQ_MAX_THREADS:
*result = 0;
return APR_SUCCESS;
case AP_MPMQ_MIN_SPARE_DEAMONS:
*result = ap_threads_min_free;
return APR_SUCCESS;
case AP_MPMQ_MIN_SPARE_THREADS:
*result = 0;
return APR_SUCCESS;
case AP_MPMQ_MAX_SPARE_DAEMONS:
*result = ap_threads_max_free;
return APR_SUCCESS;
case AP_MPMQ_MAX_SPARE_THREADS:
*result = 0;
return APR_SUCCESS;
case AP_MPMQ_MAX_REQUESTS_DEAMON:
*result = ap_max_requests_per_child;
return APR_SUCCESS;
case AP_MPMQ_MAX_DAEMONS:
*result = ap_threads_limit;
return APR_SUCCESS;
}
return APR_ENOTIMPL;
}
/*****************************************************************
* Connection structures and accounting...
*/
static void just_die(int sig)
{
clean_child_exit(0);
}
/* volatile just in case */
static int volatile shutdown_pending;
static int volatile restart_pending;
static int volatile is_graceful;
static int volatile wait_to_finish=1;
ap_generation_t volatile ap_my_generation=0;
static void sig_term(int sig)
{
if (shutdown_pending == 1) {
/* Um, is this _probably_ not an error, if the user has
* tried to do a shutdown twice quickly, so we won't
* worry about reporting it.
*/
return;
}
shutdown_pending = 1;
while (wait_to_finish)
delay(500);
// NXThreadYield();
delay(2000);
// The shut down flag wait_to_finish needs to be set in
// the atexit() routine when it is finally working.
}
/* restart() is the signal handler for SIGHUP and SIGWINCH
* in the parent process, unless running in ONE_PROCESS mode
*/
static void restart(int sig)
{
if (restart_pending == 1) {
/* Probably not an error - don't bother reporting it */
return;
}
restart_pending = 1;
}
static void set_signals(void)
{
apr_signal(SIGTERM, sig_term);
}
/*****************************************************************
* Child process main loop.
* The following vars are static to avoid getting clobbered by longjmp();
* they are really private to child_main.
*/
//static int srv;
//static apr_socket_t *csd;
//static int requests_this_child;
static fd_set main_fds;
int ap_graceful_stop_signalled(void)
{
/* not ever called anymore... */
return 0;
}
static int setup_listen_poll(apr_pool_t *pmain, apr_pollfd_t **listen_poll)
{
ap_listen_rec *lr;
int numfds = 0;
for (lr = ap_listeners; lr; lr = lr->next) {
numfds++;
}
apr_poll_setup(listen_poll, numfds, pmain);
for (lr = ap_listeners; lr; lr = lr->next) {
apr_poll_socket_add(*listen_poll, lr->sd, APR_POLLIN);
}
return 0;
}
static void worker_main(void *arg)
{
ap_listen_rec *lr;
ap_listen_rec *last_lr;
ap_listen_rec *first_lr;
apr_pool_t *ptrans;
conn_rec *current_conn;
apr_status_t stat = APR_EINIT;
int sockdes;
int worker_num_arg = *((int*)arg);
apr_pollfd_t *listen_poll;
int nsds, rv;
int my_worker_num = worker_num_arg;
apr_socket_t *csd = NULL;
int requests_this_child = 0;
int srv;
struct timeval tv;
last_lr = NULL;
tv.tv_sec = 1;
tv.tv_usec = 0;
apr_pool_create(&ptrans, pmain);
apr_thread_mutex_lock(worker_thread_count_mutex);
worker_thread_count++;
apr_thread_mutex_unlock(worker_thread_count_mutex);
if (setup_listen_poll(pmain, &listen_poll)) {
clean_child_exit(1);
}
ap_update_child_status(AP_CHILD_THREAD_FROM_ID(my_child_num), WORKER_READY, (request_rec *) NULL);
// ap_sync_scoreboard_image();
while (!die_now) {
/*
* (Re)initialize this child to a pre-connection state.
*/
current_conn = NULL;
apr_pool_clear(ptrans);
if ((ap_max_requests_per_child > 0
&& requests_this_child++ >= ap_max_requests_per_child)) {
clean_child_exit(0);
}
ap_update_child_status(AP_CHILD_THREAD_FROM_ID(my_child_num), WORKER_READY, (request_rec *) NULL);
/*
* Wait for an acceptable connection to arrive.
*/
/* Lock around "accept", if necessary */
SAFE_ACCEPT(accept_mutex_on());
for (;;) {
if (shutdown_pending) {
printf ("Thread %d is shutting down\n", getpid());
SAFE_ACCEPT(accept_mutex_off());
clean_child_exit(0);
}
/* more than one socket */
memcpy(&main_fds, &listenfds, sizeof(fd_set));
srv = select(listenmaxfd + 1, &main_fds, NULL, NULL, &tv);
if (srv < 0 && h_errno != EINTR) {
/* Single Unix documents select as returning errnos
* EBADF, EINTR, and EINVAL... and in none of those
* cases does it make sense to continue. In fact
* on Linux 2.0.x we seem to end up with EFAULT
* occasionally, and we'd loop forever due to it.
*/
ap_log_error(APLOG_MARK, APLOG_ERR, h_errno, ap_server_conf, "select: (listen)");
clean_child_exit(1);
}
if (srv <= 0)
continue;
/* we remember the last_lr we searched last time around so that
we don't end up starving any particular listening socket */
if (last_lr == NULL) {
lr = ap_listeners;
}
else {
lr = last_lr->next;
if (!lr)
lr = ap_listeners;
}
first_lr = lr;
do {
apr_os_sock_get(&sockdes, lr->sd);
if (FD_ISSET(sockdes, &main_fds))
goto got_listener;
lr = lr->next;
if (!lr)
lr = ap_listeners;
} while (lr != first_lr);
/* FIXME: if we get here, something bad has happened, and we're
probably gonna spin forever.
*/
continue;
got_listener:
last_lr = lr;
sd = lr->sd;
/* if we accept() something we don't want to die, so we have to
* defer the exit
*/
for (;;) {
// ap_sync_scoreboard_image();
stat = apr_accept(&csd, sd, ptrans);
if (stat == APR_SUCCESS || !APR_STATUS_IS_EINTR(stat))
break;
}
if (stat == APR_SUCCESS)
break; /* We have a socket ready for reading */
else {
/* Our old behaviour here was to continue after accept()
* errors. But this leads us into lots of troubles
* because most of the errors are quite fatal. For
* example, EMFILE can be caused by slow descriptor
* leaks (say in a 3rd party module, or libc). It's
* foolish for us to continue after an EMFILE. We also
* seem to tickle kernel bugs on some platforms which
* lead to never-ending loops here. So it seems best
* to just exit in most cases.
*/
switch (stat) {
/* Linux generates the rest of these, other tcp
* stacks (i.e. bsd) tend to hide them behind
* getsockopt() interfaces. They occur when
* the net goes sour or the client disconnects
* after the three-way handshake has been done
* in the kernel but before userland has picked
* up the socket.
*/
case ECONNRESET:
case ETIMEDOUT:
case EHOSTUNREACH:
case ENETUNREACH:
break;
case ENETDOWN:
/*
* When the network layer has been shut down, there
* is not much use in simply exiting: the parent
* would simply re-create us (and we'd fail again).
* Use the CHILDFATAL code to tear the server down.
* @@@ Martin's idea for possible improvement:
* A different approach would be to define
* a new APEXIT_NETDOWN exit code, the reception
* of which would make the parent shutdown all
* children, then idle-loop until it detected that
* the network is up again, and restart the children.
* Ben Hyde noted that temporary ENETDOWN situations
* occur in mobile IP.
*/
ap_log_error(APLOG_MARK, APLOG_EMERG, stat, ap_server_conf,
"apr_accept: giving up.");
clean_child_exit(APEXIT_CHILDFATAL);
default:
ap_log_error(APLOG_MARK, APLOG_ERR, stat, ap_server_conf,
"apr_accept: (client socket)");
clean_child_exit(1);
}
}
// ap_sync_scoreboard_image();
}
SAFE_ACCEPT(accept_mutex_off()); /* unlock after "accept" */
/*
* We now have a connection, so set it up with the appropriate
* socket options, file descriptors, and read/write buffers.
*/
apr_os_sock_get(&sockdes, csd);
if (sockdes >= FD_SETSIZE) {
ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_WARNING, 0, NULL,
"new file descriptor %d is too large; you probably need "
"to rebuild Apache with a larger FD_SETSIZE "
"(currently %d)",
sockdes, FD_SETSIZE);
apr_socket_close(csd);
// ap_sync_scoreboard_image();
continue;
}
ap_sock_disable_nagle(csd);
current_conn = ap_new_connection(ptrans, ap_server_conf, csd,
my_child_num);
if (current_conn) {
ap_process_connection(current_conn);
ap_lingering_close(current_conn);
}
// ap_sync_scoreboard_image();
}
clean_child_exit(0);
}
static int make_child(server_rec *s, int slot)
{
int tid;
int err=0;
NXContext_t ctx;
if (slot + 1 > ap_max_workers_limit) {
ap_max_workers_limit = slot + 1;
}
if (one_process) {
apr_signal(SIGINT, just_die);
apr_signal(SIGTERM, just_die);
worker_main((void*)&slot);
}
ap_update_child_status(AP_CHILD_THREAD_FROM_ID(slot), WORKER_STARTING, (request_rec *) NULL);
if (ctx = NXContextAlloc((void (*)(void *)) worker_main, &slot, NX_PRIO_MED, ap_thread_stack_size, NX_CTX_NORMAL, &err)) {
char threadName[32];
sprintf (threadName, "Apache_Worker %d", slot);
NXContextSetName(ctx, threadName);
err = NXThreadCreate(ctx, NX_THR_BIND_CONTEXT, &tid);
if (err) {
NXContextFree (ctx);
}
}
if (err) {
/* create thread didn't succeed. Fix the scoreboard or else
* it will say SERVER_STARTING forever and ever
*/
ap_update_child_status(AP_CHILD_THREAD_FROM_ID(slot), WORKER_DEAD, (request_rec *) NULL);
/* In case system resources are maxxed out, we don't want
Apache running away with the CPU trying to fork over and
over and over again. */
apr_thread_yield();
return -1;
}
ap_scoreboard_image->servers[0][slot].tid = tid;
return 0;
}
/* start up a bunch of worker threads */
static void startup_workers(int number_to_start)
{
int i;
for (i = 0; number_to_start && i < ap_threads_limit; ++i) {
if (ap_scoreboard_image->servers[0][i].status != WORKER_DEAD) {
continue;
}
if (make_child(ap_server_conf, i) < 0) {
break;
}
--number_to_start;
}
}
/*
* idle_spawn_rate is the number of children that will be spawned on the
* next maintenance cycle if there aren't enough idle servers. It is
* doubled up to MAX_SPAWN_RATE, and reset only when a cycle goes by
* without the need to spawn.
*/
static int idle_spawn_rate = 1;
#ifndef MAX_SPAWN_RATE
#define MAX_SPAWN_RATE (32)
#endif
static int hold_off_on_exponential_spawning;
static void perform_idle_server_maintenance(apr_pool_t *p)
{
int i;
int to_kill;
int idle_count;
worker_score *ws;
int free_length;
int free_slots[MAX_SPAWN_RATE];
int last_non_dead;
int total_non_dead;
/* initialize the free_list */
free_length = 0;
to_kill = -1;
idle_count = 0;
last_non_dead = -1;
total_non_dead = 0;
ap_sync_scoreboard_image();
for (i = 0; i < ap_threads_limit; ++i) {
int status;
if (i >= ap_max_workers_limit && free_length == idle_spawn_rate)
break;
ws = &ap_scoreboard_image->servers[i][0];
status = ws->status;
if (status == WORKER_DEAD) {
/* try to keep children numbers as low as possible */
if (free_length < idle_spawn_rate) {
free_slots[free_length] = i;
++free_length;
}
}
else {
/* We consider a starting server as idle because we started it
* at least a cycle ago, and if it still hasn't finished starting
* then we're just going to swamp things worse by forking more.
* So we hopefully won't need to fork more if we count it.
* This depends on the ordering of SERVER_READY and SERVER_STARTING.
*/
if (status <= SERVER_READY) {
++ idle_count;
/* always kill the highest numbered child if we have to...
* no really well thought out reason ... other than observing
* the server behaviour under linux where lower numbered children
* tend to service more hits (and hence are more likely to have
* their data in cpu caches).
*/
to_kill = i;
}
++total_non_dead;
last_non_dead = i;
}
}
ap_max_workers_limit = last_non_dead + 1;
if (idle_count > ap_threads_max_free) {
/* kill off one child... we use the pod because that'll cause it to
* shut down gracefully, in case it happened to pick up a request
* while we were counting
*/
idle_spawn_rate = 1;
}
else if (idle_count < ap_threads_min_free) {
/* terminate the free list */
if (free_length == 0) {
/* only report this condition once */
static int reported = 0;
if (!reported) {
ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, ap_server_conf,
"server reached MaxClients setting, consider"
" raising the MaxClients setting");
reported = 1;
}
idle_spawn_rate = 1;
}
else {
if (idle_spawn_rate >= 8) {
ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_INFO, 0, ap_server_conf,
"server seems busy, (you may need "
"to increase StartServers, or Min/MaxSpareServers), "
"spawning %d children, there are %d idle, and "
"%d total children", idle_spawn_rate,
idle_count, total_non_dead);
}
for (i = 0; i < free_length; ++i) {
make_child(ap_server_conf, free_slots[i]);
}
/* the next time around we want to spawn twice as many if this
* wasn't good enough, but not if we've just done a graceful
*/
if (hold_off_on_exponential_spawning) {
--hold_off_on_exponential_spawning;
}
else if (idle_spawn_rate < MAX_SPAWN_RATE) {
idle_spawn_rate *= 2;
}
}
}
else {
idle_spawn_rate = 1;
}
}
static int setup_listeners(server_rec *s)
{
ap_listen_rec *lr;
int sockdes;
if (ap_setup_listeners(s) < 1 ) {
ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_ALERT, 0, s,
"no listening sockets available, shutting down");
return -1;
}
listenmaxfd = -1;
FD_ZERO(&listenfds);
for (lr = ap_listeners; lr; lr = lr->next) {
apr_os_sock_get(&sockdes, lr->sd);
FD_SET(sockdes, &listenfds);
if (sockdes > listenmaxfd) {
listenmaxfd = sockdes;
}
}
return 0;
}
/*****************************************************************
* Executive routines.
*/
int ap_mpm_run(apr_pool_t *_pconf, apr_pool_t *plog, server_rec *s)
{
int index;
int remaining_workers_to_start;
apr_status_t status=0;
pconf = _pconf;
ap_server_conf = s;
if (setup_listeners(s)) {
ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_ALERT, status, s,
"no listening sockets available, shutting down");
return -1;
}
ap_log_pid(pconf, ap_pid_fname);
worker_thread_count = 0;
apr_thread_mutex_create(&worker_thread_count_mutex, pconf);
apr_thread_mutex_create(&accept_mutex, pconf);
if (!is_graceful) {
ap_run_pre_mpm(pconf, SB_NOT_SHARED);
}
set_signals();
/* Normal child main stuff */
apr_pool_create(&pmain, pconf);
/* needs to be done before we switch UIDs so we have permissions */
reopen_scoreboard(pmain);
ap_run_child_init(pmain, ap_server_conf);
/* End Normal child main stuff */
if (ap_threads_max_free < ap_threads_min_free + 1) /* Don't thrash... */
ap_threads_max_free = ap_threads_min_free + 1;
/* If we're doing a graceful_restart then we're going to see a lot
* of children exiting immediately when we get into the main loop
* below (because we just sent them SIGWINCH). This happens pretty
* rapidly... and for each one that exits we'll start a new one until
* we reach at least daemons_min_free. But we may be permitted to
* start more than that, so we'll just keep track of how many we're
* supposed to start up without the 1 second penalty between each fork.
*/
remaining_workers_to_start = ap_threads_to_start;
if (remaining_workers_to_start > ap_threads_limit) {
remaining_workers_to_start = ap_threads_limit;
}
if (!is_graceful) {
startup_workers(remaining_workers_to_start);
remaining_workers_to_start = 0;
}
else {
/* give the system some time to recover before kicking into
* exponential mode */
hold_off_on_exponential_spawning = 10;
}
ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_NOTICE, 0, ap_server_conf,
"%s configured -- resuming normal operations",
ap_get_server_version());
ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_INFO, 0, ap_server_conf,
"Server built: %s", ap_get_server_built());
restart_pending = shutdown_pending = 0;
printf("%s \n", ap_get_server_version());
while (!restart_pending && !shutdown_pending) {
int worker_slot;
apr_wait_t status;
// /* this is a memory leak, but I'll fix it later. */
// apr_proc_t pid;
//
// ap_wait_or_timeout(&status, &pid, pconf);
//
// /* XXX: if it takes longer than 1 second for all our children
// * to start up and get into IDLE state then we may spawn an
// * extra child
// */
// if (pid.pid != -1) {
// ap_process_child_status(&pid, status);
// /* non-fatal death... note that it's gone in the scoreboard. */
// ap_sync_scoreboard_image();
// child_slot = find_child_by_pid(&pid);
// if (child_slot >= 0) {
// ap_update_child_status(AP_CHILD_THREAD_FROM_ID(child_slot), WORKER_DEAD,
// (request_rec *) NULL);
// if (remaining_workers_to_start && child_slot < ap_threads_limit) {
// /* we're still doing a 1-for-1 replacement of dead
// * children with new children
// */
// make_child(ap_server_conf, child_slot);
// --remaining_workers_to_start;
// }
//#if APR_HAS_OTHER_CHILD
// }
// else if (apr_proc_other_child_read(&pid, status) == 0) {
// /* handled */
//#endif
// }
// else if (is_graceful) {
// /* Great, we've probably just lost a slot in the
// * scoreboard. Somehow we don't know about this
// * child.
// */
// ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_WARNING,
// 0, ap_server_conf,
// "long lost child came home! (pid %ld)", (long)pid.pid);
// }
// /* Don't perform idle maintenance when a child dies,
// * only do it when there's a timeout. Remember only a
// * finite number of children can die, and it's pretty
// * pathological for a lot to die suddenly.
// */
// continue;
// }
// else if (remaining_workers_to_start) {
// /* we hit a 1 second timeout in which none of the previous
// * generation of children needed to be reaped... so assume
// * they're all done, and pick up the slack if any is left.
// */
// startup_children(remaining_workers_to_start);
// remaining_workers_to_start = 0;
// /* In any event we really shouldn't do the code below because
// * few of the servers we just started are in the IDLE state
// * yet, so we'd mistakenly create an extra server.
// */
// continue;
// }
// perform_idle_server_maintenance(pconf);
apr_thread_yield();
}
if (shutdown_pending) {
ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_NOTICE, 0, ap_server_conf,
"caught SIGTERM, shutting down");
while (worker_thread_count > 0)
apr_thread_yield();
printf ("Press any key to continue...");
getc(stdin);
wait_to_finish = 0;
return 1;
}
/* we've been told to restart */
// apr_signal(SIGHUP, SIG_IGN);
if (one_process) {
/* not worth thinking about */
return 1;
}
/* advance to the next generation */
/* XXX: we really need to make sure this new generation number isn't in
* use by any of the children.
*/
++ap_my_generation;
ap_scoreboard_image->global.running_generation = ap_my_generation;
update_scoreboard_global();
if (is_graceful) {
ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_NOTICE, 0, ap_server_conf,
"Graceful restart requested, doing restart");
/* kill off the idle ones */
#ifndef SCOREBOARD_FILE
/* This is mostly for debugging... so that we know what is still
* gracefully dealing with existing request. But we can't really
* do it if we're in a SCOREBOARD_FILE because it'll cause
* corruption too easily.
*/
ap_sync_scoreboard_image();
for (index = 0; index < ap_threads_limit; ++index) {
if (ap_scoreboard_image->servers[0][index].status != WORKER_DEAD) {
ap_scoreboard_image->servers[0][index].status = SERVER_GRACEFUL;
}
}
#endif
}
else {
/* Kill 'em off */
ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_NOTICE, 0, ap_server_conf,
"SIGHUP received. Attempting to restart");
}
return 0;
}
static void netware_pre_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp)
{
static int restart_num = 0;
int no_detach, debug;
debug = ap_exists_config_define("DEBUG");
if (debug)
no_detach = one_process = 1;
else
{
no_detach = ap_exists_config_define("NO_DETACH");
one_process = ap_exists_config_define("ONE_PROCESS");
}
/* sigh, want this only the second time around */
if (restart_num++ == 1) {
is_graceful = 0;
if (!one_process && !no_detach) {
apr_proc_detach();
}
parent_pid = ap_my_pid = getpid();
}
ap_listen_pre_config();
ap_threads_to_start = DEFAULT_START_DAEMON;
ap_threads_min_free = DEFAULT_MIN_FREE_DAEMON;
ap_threads_max_free = DEFAULT_MAX_FREE_DAEMON;
ap_threads_limit = HARD_THREAD_LIMIT;
ap_pid_fname = DEFAULT_PIDLOG;
ap_scoreboard_fname = DEFAULT_SCOREBOARD;
ap_lock_fname = DEFAULT_LOCKFILE;
ap_max_requests_per_child = DEFAULT_MAX_REQUESTS_PER_CHILD;
ap_extended_status = 0;
apr_cpystrn(ap_coredump_dir, ap_server_root, sizeof(ap_coredump_dir));
}
static void netware_mpm_hooks(apr_pool_t *p)
{
ap_hook_pre_config(netware_pre_config, NULL, NULL, APR_HOOK_MIDDLE);
}
void netware_rewrite_args(process_rec *process)
{
char *def_server_root;
char optbuf[3];
const char *optarg;
apr_getopt_t *opt;
apr_array_header_t *mpm_new_argv;
/* Rewrite process->argv[];
*
* add default -d serverroot from the path of this executable
*
* The end result will look like:
* The -d serverroot default from the running executable
*/
if (process->argc > 0) {
char *s = apr_pstrdup (process->pconf, process->argv[0]);
if (s) {
int i, len = strlen(s);
for (i=len; i; i--) {
if (s[i] == '\\' || s[i] == '/') {
s[i] = NULL;
apr_filepath_merge(&def_server_root, NULL, s,
APR_FILEPATH_TRUENAME, process->pool);
break;
}
}
/* Use process->pool so that the rewritten argv
* lasts for the lifetime of the server process,
* because pconf will be destroyed after the
* initial pre-flight of the config parser.
*/
mpm_new_argv = apr_array_make(process->pool, process->argc + 2,
sizeof(const char *));
*(const char **)apr_array_push(mpm_new_argv) = process->argv[0];
*(const char **)apr_array_push(mpm_new_argv) = "-d";
*(const char **)apr_array_push(mpm_new_argv) = def_server_root;
optbuf[0] = '-';
optbuf[2] = '\0';
apr_getopt_init(&opt, process->pool, process->argc, (char**) process->argv);
while (apr_getopt(opt, AP_SERVER_BASEARGS, optbuf + 1, &optarg) == APR_SUCCESS) {
switch (optbuf[1]) {
default:
*(const char **)apr_array_push(mpm_new_argv) =
apr_pstrdup(process->pool, optbuf);
if (optarg) {
*(const char **)apr_array_push(mpm_new_argv) = optarg;
}
break;
}
}
process->argc = mpm_new_argv->nelts;
process->argv = (const char * const *) mpm_new_argv->elts;
}
}
}
static const char *set_threads_to_start(cmd_parms *cmd, void *dummy, const char *arg)
{
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
ap_threads_to_start = atoi(arg);
return NULL;
}
static const char *set_min_free_threads(cmd_parms *cmd, void *dummy, const char *arg)
{
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
ap_threads_min_free = atoi(arg);
if (ap_threads_min_free <= 0) {
ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,
"WARNING: detected MinSpareServers set to non-positive.");
ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,
"Resetting to 1 to avoid almost certain Apache failure.");
ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,
"Please read the documentation.");
ap_threads_min_free = 1;
}
return NULL;
}
static const char *set_max_free_threads(cmd_parms *cmd, void *dummy, const char *arg)
{
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
ap_threads_max_free = atoi(arg);
return NULL;
}
static const char *set_thread_limit (cmd_parms *cmd, void *dummy, const char *arg)
{
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
ap_threads_limit = atoi(arg);
if (ap_threads_limit > HARD_THREAD_LIMIT) {
ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,
"WARNING: MaxClients of %d exceeds compile time limit "
"of %d servers,", ap_threads_limit, HARD_SERVER_LIMIT);
ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,
" lowering MaxClients to %d. To increase, please "
"see the", HARD_SERVER_LIMIT);
ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,
" HARD_SERVER_LIMIT define in %s.",
AP_MPM_HARD_LIMITS_FILE);
ap_threads_limit = HARD_THREAD_LIMIT;
}
else if (ap_threads_limit < 1) {
ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,
"WARNING: Require MaxClients > 0, setting to 1");
ap_threads_limit = 1;
}
return NULL;
}
static const char *set_thread_stacksize(cmd_parms *cmd, void *dummy,
const char *arg)
{
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
ap_thread_stack_size = atoi(arg);
return NULL;
}
static const command_rec netware_mpm_cmds[] = {
AP_INIT_TAKE1("ThreadStackSize", set_thread_stacksize, NULL, RSRC_CONF,
"Stack size each created thread will use."),
LISTEN_COMMANDS
AP_INIT_TAKE1("StartThreads", set_threads_to_start, NULL, RSRC_CONF,
"Number of worker threads launched at server startup"),
AP_INIT_TAKE1("MinSpareThreads", set_min_free_threads, NULL, RSRC_CONF,
"Minimum number of idle threads, to handle request spikes"),
AP_INIT_TAKE1("MaxSpareThreads", set_max_free_threads, NULL, RSRC_CONF,
"Maximum number of idle threads"),
AP_INIT_TAKE1("MaxThreads", set_thread_limit, NULL, RSRC_CONF,
"Maximum number of worker threads alive at the same time"),
{ NULL }
};
module AP_MODULE_DECLARE_DATA mpm_netware_module = {
MPM20_MODULE_STUFF,
netware_rewrite_args, /* hook to run before apache parses args */
NULL, /* create per-directory config structure */
NULL, /* merge per-directory config structures */
NULL, /* create per-server config structure */
NULL, /* merge per-server config structures */
netware_mpm_cmds, /* command apr_table_t */
netware_mpm_hooks, /* register hooks */
};
1.1 httpd-2.0/server/mpm/netware/mpm_default.h
Index: mpm_default.h
===================================================================
/* ====================================================================
* 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_MPM_DEFAULT_H
#define APACHE_MPM_DEFAULT_H
#define AP_ID_FROM_CHILD_THREAD(c, t) ((c * HARD_THREAD_LIMIT) + t)
#define AP_CHILD_THREAD_FROM_ID(i) (0), (i)
/* Number of servers to spawn off by default --- also, if fewer than
* this free when the caretaker checks, it will spawn more.
*/
#ifndef DEFAULT_START_DAEMON
#define DEFAULT_START_DAEMON 1
#endif
/* Maximum number of *free* server processes --- more than this, and
* they will die off.
*/
#ifndef DEFAULT_MAX_FREE_DAEMON
#define DEFAULT_MAX_FREE_DAEMON 1
#endif
/* Minimum --- fewer than this, and more will be created */
#ifndef DEFAULT_MIN_FREE_DAEMON
#define DEFAULT_MIN_FREE_DAEMON 1
#endif
/* Limit on the total --- clients will be locked out if more servers than
* this are needed. It is intended solely to keep the server from crashing
* when things get out of hand.
*
* We keep a hard maximum number of servers, for two reasons --- first off,
* in case something goes seriously wrong, we want to stop the fork bomb
* short of actually crashing the machine we're running on by filling some
* kernel table. Secondly, it keeps the size of the scoreboard file small
* enough that we can read the whole thing without worrying too much about
* the overhead.
*/
#ifndef HARD_SERVER_LIMIT
#define HARD_SERVER_LIMIT 1
#endif
/* Limit on the threads per process. Clients will be locked out if more than
* this * HARD_SERVER_LIMIT are needed.
*
* We keep this for one reason it keeps the size of the scoreboard file small
* enough that we can read the whole thing without worrying too much about
* the overhead.
*/
#ifndef HARD_THREAD_LIMIT
#define HARD_THREAD_LIMIT 2048
#endif
#ifndef DEFAULT_THREADS_PER_CHILD
#define DEFAULT_THREADS_PER_CHILD 50
#endif
/* File used for accept locking, when we use a file */
#ifndef DEFAULT_LOCKFILE
#define DEFAULT_LOCKFILE "logs/accept.lock"
#endif
/* Scoreboard file, if there is one */
#ifndef DEFAULT_SCOREBOARD
#define DEFAULT_SCOREBOARD "logs/apache_runtime_status"
#endif
/* Where the main/parent process's pid is logged */
#ifndef DEFAULT_PIDLOG
#define DEFAULT_PIDLOG "logs/httpd.pid"
#endif
/*
* Interval, in microseconds, between scoreboard maintenance.
*/
#ifndef SCOREBOARD_MAINTENANCE_INTERVAL
#define SCOREBOARD_MAINTENANCE_INTERVAL 1000000
#endif
/* Number of requests to try to handle in a single process. If <= 0,
* the children don't die off.
*/
#ifndef DEFAULT_MAX_REQUESTS_PER_CHILD
#define DEFAULT_MAX_REQUESTS_PER_CHILD 10000
#endif
#endif /* AP_MPM_DEFAULT_H */
1.1 httpd-2.0/server/mpm/netware/mpm.h
Index: mpm.h
===================================================================
/* ====================================================================
* 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.
*/
#include "scoreboard.h"
//#include "unixd.h"
#ifndef APACHE_MPM_THREADED_H
#define APACHE_MPM_THREADED_H
#define THREADED_MPM
#define MPM_NAME "NetWare_Threaded"
//#define AP_MPM_WANT_RECLAIM_CHILD_PROCESSES
#define AP_MPM_WANT_WAIT_OR_TIMEOUT
//#define AP_MPM_WANT_PROCESS_CHILD_STATUS
#define AP_MPM_WANT_SET_PIDFILE
#define AP_MPM_WANT_SET_SCOREBOARD
#define AP_MPM_WANT_SET_LOCKFILE
#define AP_MPM_WANT_SET_MAX_REQUESTS
#define AP_MPM_WANT_SET_COREDUMPDIR
//#define AP_MPM_WANT_SET_ACCEPT_LOCK_MECH
#define MPM_SYNC_CHILD_TABLE() (ap_sync_scoreboard_image())
#define MPM_CHILD_PID(i) (ap_scoreboard_image->parent[i].pid)
#define MPM_NOTE_CHILD_KILLED(i) (MPM_CHILD_PID(i) = 0)
extern int ap_threads_per_child;
extern int ap_thread_stack_size;
extern int ap_max_workers_limit;
extern server_rec *ap_server_conf;
#endif /* APACHE_MPM_THREADED_H */