diff options
Diffstat (limited to 'rubbos/app/httpd-2.0.64/server/mpm/netware/mpm_netware.c')
| -rw-r--r-- | rubbos/app/httpd-2.0.64/server/mpm/netware/mpm_netware.c | 1295 |
1 files changed, 0 insertions, 1295 deletions
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/netware/mpm_netware.c b/rubbos/app/httpd-2.0.64/server/mpm/netware/mpm_netware.c deleted file mode 100644 index f3eb227c..00000000 --- a/rubbos/app/httpd-2.0.64/server/mpm/netware/mpm_netware.c +++ /dev/null @@ -1,1295 +0,0 @@ -/* 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. - */ - -/* - * 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. - */ - -#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" -#include "apr_thread_mutex.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> - -#include <netware.h> -#include <nks/netware.h> -#include <library.h> -#include <screen.h> - -/* 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 - -#define WORKER_DEAD SERVER_DEAD -#define WORKER_STARTING SERVER_STARTING -#define WORKER_READY SERVER_READY -#define WORKER_IDLE_KILL SERVER_IDLE_KILL - -/* config globals */ - -int ap_threads_per_child=0; /* Worker threads per child */ -int ap_thread_stack_size=65536; -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; -static int mpm_state = AP_MPMQ_STARTING; - -/* - * 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... */ - -int hold_screen_on_exit = 0; /* Indicates whether the screen should be held open */ - -static fd_set listenfds; -static int listenmaxfd; - -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 char *ap_my_addrspace = NULL; - -static int die_now = 0; - -/* Keep track of the number of worker threads currently active */ -static unsigned long worker_thread_count; -static int request_count; - -/* Structure used to register/deregister a console handler with the OS */ -static int InstallConsoleHandler(void); -static void RemoveConsoleHandler(void); -static int CommandLineInterpreter(scr_t screenID, const char *commandLine); -static CommandParser_t ConsoleHandler = {0, NULL, 0}; -#define HANDLEDCOMMAND 0 -#define NOTMYCOMMAND 1 - -static int show_settings = 0; - -//#define DBINFO_ON -//#define DBPRINT_ON -#ifdef DBPRINT_ON -#define DBPRINT0(s) printf(s) -#define DBPRINT1(s,v1) printf(s,v1) -#define DBPRINT2(s,v1,v2) printf(s,v1,v2) -#else -#define DBPRINT0(s) -#define DBPRINT1(s,v1) -#define DBPRINT2(s,v1,v2) -#endif - -/* 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; - -/* a clean exit from a child with proper cleanup */ -static void clean_child_exit(int code, int worker_num, apr_pool_t *ptrans, - apr_bucket_alloc_t *bucket_alloc) __attribute__ ((noreturn)); -static void clean_child_exit(int code, int worker_num, apr_pool_t *ptrans, - apr_bucket_alloc_t *bucket_alloc) -{ - apr_bucket_alloc_destroy(bucket_alloc); - if (!shutdown_pending) { - apr_pool_destroy(ptrans); - } - - atomic_dec (&worker_thread_count); - if (worker_num >=0) - ap_update_child_status_from_indexes(0, worker_num, WORKER_DEAD, - (request_rec *) NULL); - NXThreadExit((void*)&code); -} - -AP_DECLARE(apr_status_t) ap_mpm_query(int query_code, int *result) -{ - switch(query_code){ - case AP_MPMQ_MAX_DAEMON_USED: - *result = 1; - return APR_SUCCESS; - case AP_MPMQ_IS_THREADED: - *result = AP_MPMQ_DYNAMIC; - return APR_SUCCESS; - case AP_MPMQ_IS_FORKED: - *result = AP_MPMQ_NOT_SUPPORTED; - 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 = ap_threads_limit; - return APR_SUCCESS; - case AP_MPMQ_MIN_SPARE_DAEMONS: - *result = 0; - return APR_SUCCESS; - case AP_MPMQ_MIN_SPARE_THREADS: - *result = ap_threads_min_free; - return APR_SUCCESS; - case AP_MPMQ_MAX_SPARE_DAEMONS: - *result = 0; - return APR_SUCCESS; - case AP_MPMQ_MAX_SPARE_THREADS: - *result = ap_threads_max_free; - return APR_SUCCESS; - case AP_MPMQ_MAX_REQUESTS_DAEMON: - *result = ap_max_requests_per_child; - return APR_SUCCESS; - case AP_MPMQ_MAX_DAEMONS: - *result = 1; - return APR_SUCCESS; - case AP_MPMQ_MPM_STATE: - *result = mpm_state; - return APR_SUCCESS; - } - return APR_ENOTIMPL; -} - - -/***************************************************************** - * Connection structures and accounting... - */ - -static void mpm_term(void) -{ - RemoveConsoleHandler(); - wait_to_finish = 0; - NXThreadYield(); -} - -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; - - DBPRINT0 ("waiting for threads\n"); - while (wait_to_finish) { - apr_thread_yield(); - } - DBPRINT0 ("goodbye\n"); -} - -/* restart() is the signal handler for SIGHUP and SIGWINCH - * in the parent process, unless running in ONE_PROCESS mode - */ -static void restart(void) -{ - if (restart_pending == 1) { - /* Probably not an error - don't bother reporting it */ - return; - } - restart_pending = 1; - is_graceful = 1; -} - -static void set_signals(void) -{ - apr_signal(SIGTERM, sig_term); - apr_signal(SIGABRT, sig_term); -} - -int nlmUnloadSignaled(int wait) -{ - shutdown_pending = 1; - - if (wait) { - while (wait_to_finish) { - NXThreadYield(); - } - } - - return 0; -} - -/***************************************************************** - * Child process main loop. - * The following vars are static to avoid getting clobbered by longjmp(); - * they are really private to child_main. - */ - - -int ap_graceful_stop_signalled(void) -{ - /* not ever called anymore... */ - return 0; -} - -#define MAX_WB_RETRIES 3 -#ifdef DBINFO_ON -static int would_block = 0; -static int retry_success = 0; -static int retry_fail = 0; -static int avg_retries = 0; -#endif - -/*static */ -void worker_main(void *arg) -{ - ap_listen_rec *lr, *first_lr, *last_lr = NULL; - apr_pool_t *ptrans; - apr_pool_t *pbucket; - apr_allocator_t *allocator; - apr_bucket_alloc_t *bucket_alloc; - conn_rec *current_conn; - apr_status_t stat = APR_EINIT; - ap_sb_handle_t *sbh; - - int my_worker_num = (int)arg; - apr_socket_t *csd = NULL; - int requests_this_child = 0; - apr_socket_t *sd = NULL; - fd_set main_fds; - - int sockdes; - int srv; - struct timeval tv; - int wouldblock_retry; - - tv.tv_sec = 1; - tv.tv_usec = 0; - - apr_allocator_create(&allocator); - apr_allocator_max_free_set(allocator, ap_max_mem_free); - - apr_pool_create_ex(&ptrans, pmain, NULL, allocator); - apr_allocator_owner_set(allocator, ptrans); - apr_pool_tag(ptrans, "transaction"); - - bucket_alloc = apr_bucket_alloc_create_ex(allocator); - - atomic_inc (&worker_thread_count); - - 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)) { - DBPRINT1 ("\n**Thread slot %d is shutting down", my_worker_num); - clean_child_exit(0, my_worker_num, ptrans, bucket_alloc); - } - - ap_update_child_status_from_indexes(0, my_worker_num, WORKER_READY, - (request_rec *) NULL); - - /* - * Wait for an acceptable connection to arrive. - */ - - for (;;) { - if (shutdown_pending || restart_pending || (ap_scoreboard_image->servers[0][my_worker_num].status == WORKER_IDLE_KILL)) { - DBPRINT1 ("\nThread slot %d is shutting down\n", my_worker_num); - clean_child_exit(0, my_worker_num, ptrans, bucket_alloc); - } - - /* Check the listen queue on all sockets for requests */ - memcpy(&main_fds, &listenfds, sizeof(fd_set)); - srv = select(listenmaxfd + 1, &main_fds, NULL, NULL, &tv); - - if (srv <= 0) { - if (srv < 0) { - ap_log_error(APLOG_MARK, APLOG_NOTICE, WSAGetLastError(), ap_server_conf, - "select() failed on listen socket"); - apr_thread_yield(); - } - continue; - } - - /* 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); - /* if we get here, something unexpected happened. Go back - into the select state and try again. - */ - continue; - got_listener: - last_lr = lr; - sd = lr->sd; - - wouldblock_retry = MAX_WB_RETRIES; - - while (wouldblock_retry) { - if ((stat = apr_accept(&csd, sd, ptrans)) == APR_SUCCESS) { - break; - } - else { - /* if the error is a wouldblock then maybe we were too - quick try to pull the next request from the listen - queue. Try a few more times then return to our idle - listen state. */ - if (!APR_STATUS_IS_EAGAIN(stat)) { - break; - } - - if (wouldblock_retry--) { - apr_thread_yield(); - } - } - } - - /* If we got a new socket, set it to non-blocking mode and process - it. Otherwise handle the error. */ - if (stat == APR_SUCCESS) { - apr_socket_opt_set(csd, APR_SO_NONBLOCK, 0); -#ifdef DBINFO_ON - if (wouldblock_retry < MAX_WB_RETRIES) { - retry_success++; - avg_retries += (MAX_WB_RETRIES-wouldblock_retry); - } -#endif - break; /* We have a socket ready for reading */ - } - else { -#ifdef DBINFO_ON - if (APR_STATUS_IS_EAGAIN(stat)) { - would_block++; - retry_fail++; - } - else -#else - if (APR_STATUS_IS_EAGAIN(stat) || -#endif - APR_STATUS_IS_ECONNRESET(stat) || - APR_STATUS_IS_ETIMEDOUT(stat) || - APR_STATUS_IS_EHOSTUNREACH(stat) || - APR_STATUS_IS_ENETUNREACH(stat)) { - ; - } - else if (APR_STATUS_IS_ENETDOWN(stat)) { - /* - * 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, my_worker_num, ptrans, - bucket_alloc); - } - else { - ap_log_error(APLOG_MARK, APLOG_ERR, stat, ap_server_conf, - "apr_accept: (client socket)"); - clean_child_exit(1, my_worker_num, ptrans, bucket_alloc); - } - } - } - - ap_create_sb_handle(&sbh, ptrans, 0, my_worker_num); - /* - * We now have a connection, so set it up with the appropriate - * socket options, file descriptors, and read/write buffers. - */ - current_conn = ap_run_create_connection(ptrans, ap_server_conf, csd, - my_worker_num, sbh, - bucket_alloc); - if (current_conn) { - ap_process_connection(current_conn, csd); - ap_lingering_close(current_conn); - } - request_count++; - } - clean_child_exit(0, my_worker_num, ptrans, bucket_alloc); -} - - -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; - } - - ap_update_child_status_from_indexes(0, slot, WORKER_STARTING, - (request_rec *) NULL); - - if (ctx = NXContextAlloc((void (*)(void *)) worker_main, (void*)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_from_indexes(0, 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 (64) -#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; - - 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[0][i]; - 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 if (status == WORKER_IDLE_KILL) { - /* If it is already marked to die, skip it */ - continue; - } - 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 <= WORKER_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; - } - } - DBPRINT2("Total: %d Idle Count: %d \r", total_non_dead, idle_count); - 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; - ap_update_child_status_from_indexes(0, last_non_dead, WORKER_IDLE_KILL, - (request_rec *) NULL); - DBPRINT1("\nKilling idle thread: %d\n", last_non_dead); - } - 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_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_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); - } - DBPRINT0("\n"); - for (i = 0; i < free_length; ++i) { - DBPRINT1("Spawning additional thread slot: %d\n", free_slots[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 void display_settings () -{ - int status_array[SERVER_NUM_STATUS]; - int i, status, total=0; - int reqs = request_count; -#ifdef DBINFO_ON - int wblock = would_block; - - would_block = 0; -#endif - - request_count = 0; - - ClearScreen (getscreenhandle()); - printf("%s \n", ap_get_server_version()); - - for (i=0;i<SERVER_NUM_STATUS;i++) { - status_array[i] = 0; - } - - for (i = 0; i < ap_threads_limit; ++i) { - status = (ap_scoreboard_image->servers[0][i]).status; - status_array[status]++; - } - - for (i=0;i<SERVER_NUM_STATUS;i++) { - switch(i) - { - case SERVER_DEAD: - printf ("Available:\t%d\n", status_array[i]); - break; - case SERVER_STARTING: - printf ("Starting:\t%d\n", status_array[i]); - break; - case SERVER_READY: - printf ("Ready:\t\t%d\n", status_array[i]); - break; - case SERVER_BUSY_READ: - printf ("Busy:\t\t%d\n", status_array[i]); - break; - case SERVER_BUSY_WRITE: - printf ("Busy Write:\t%d\n", status_array[i]); - break; - case SERVER_BUSY_KEEPALIVE: - printf ("Busy Keepalive:\t%d\n", status_array[i]); - break; - case SERVER_BUSY_LOG: - printf ("Busy Log:\t%d\n", status_array[i]); - break; - case SERVER_BUSY_DNS: - printf ("Busy DNS:\t%d\n", status_array[i]); - break; - case SERVER_CLOSING: - printf ("Closing:\t%d\n", status_array[i]); - break; - case SERVER_GRACEFUL: - printf ("Restart:\t%d\n", status_array[i]); - break; - case SERVER_IDLE_KILL: - printf ("Idle Kill:\t%d\n", status_array[i]); - break; - default: - printf ("Unknown Status:\t%d\n", status_array[i]); - break; - } - if (i != SERVER_DEAD) - total+=status_array[i]; - } - printf ("Total Running:\t%d\tout of: \t%d\n", total, ap_threads_limit); - printf ("Requests per interval:\t%d\n", reqs); - -#ifdef DBINFO_ON - printf ("Would blocks:\t%d\n", wblock); - printf ("Successful retries:\t%d\n", retry_success); - printf ("Failed retries:\t%d\n", retry_fail); - printf ("Avg retries:\t%d\n", retry_success == 0 ? 0 : avg_retries / retry_success); -#endif -} - -static void show_server_data() -{ - ap_listen_rec *lr; - module **m; - - printf("%s\n", ap_get_server_version()); - if (ap_my_addrspace && (ap_my_addrspace[0] != 'O') && (ap_my_addrspace[1] != 'S')) - printf(" Running in address space %s\n", ap_my_addrspace); - - - /* Display listening ports */ - printf(" Listening on port(s):"); - lr = ap_listeners; - do { - printf(" %d", lr->bind_addr->port); - lr = lr->next; - } while(lr && lr != ap_listeners); - - /* Display dynamic modules loaded */ - printf("\n"); - for (m = ap_loaded_modules; *m != NULL; m++) { - if (((module*)*m)->dynamic_load_handle) { - printf(" Loaded dynamic module %s\n", ((module*)*m)->name); - } - } -} - - -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_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; -} - -static int shutdown_listeners() -{ - ap_listen_rec *lr; - - for (lr = ap_listeners; lr; lr = lr->next) { - apr_socket_close(lr->sd); - } - ap_listeners = NULL; - return 0; -} - -/***************************************************************** - * Executive routines. - */ - -int ap_mpm_run(apr_pool_t *_pconf, apr_pool_t *plog, server_rec *s) -{ - apr_status_t status=0; - - pconf = _pconf; - ap_server_conf = s; - - if (setup_listeners(s)) { - ap_log_error(APLOG_MARK, APLOG_ALERT, status, s, - "no listening sockets available, shutting down"); - return -1; - } - - restart_pending = shutdown_pending = 0; - worker_thread_count = 0; - - if (!is_graceful) { - if (ap_run_pre_mpm(s->process->pool, SB_NOT_SHARED) != OK) { - return 1; - } - } - - /* Only set slot 0 since that is all NetWare will ever have. */ - ap_scoreboard_image->parent[0].pid = getpid(); - - set_signals(); - - apr_pool_create(&pmain, pconf); - ap_run_child_init(pmain, ap_server_conf); - - if (ap_threads_max_free < ap_threads_min_free + 1) /* Don't thrash... */ - ap_threads_max_free = ap_threads_min_free + 1; - request_count = 0; - - startup_workers(ap_threads_to_start); - - /* Allow the Apache screen to be closed normally on exit() only if it - has not been explicitly forced to close on exit(). (ie. the -E flag - was specified at startup) */ - if (hold_screen_on_exit > 0) { - hold_screen_on_exit = 0; - } - - ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf, - "%s configured -- resuming normal operations", - ap_get_server_version()); - ap_log_error(APLOG_MARK, APLOG_INFO, 0, ap_server_conf, - "Server built: %s", ap_get_server_built()); -#ifdef AP_MPM_WANT_SET_ACCEPT_LOCK_MECH - ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, - "AcceptMutex: %s (default: %s)", - apr_proc_mutex_name(accept_mutex), - apr_proc_mutex_defname()); -#endif - show_server_data(); - - mpm_state = AP_MPMQ_RUNNING; - while (!restart_pending && !shutdown_pending) { - perform_idle_server_maintenance(pconf); - if (show_settings) - display_settings(); - apr_thread_yield(); - apr_sleep(SCOREBOARD_MAINTENANCE_INTERVAL); - } - mpm_state = AP_MPMQ_STOPPING; - - - /* Shutdown the listen sockets so that we don't get stuck in a blocking call. - shutdown_listeners();*/ - - if (shutdown_pending) { /* Got an unload from the console */ - ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf, - "caught SIGTERM, shutting down"); - - while (worker_thread_count > 0) { - printf ("\rShutdown pending. Waiting for %d thread(s) to terminate...", - worker_thread_count); - apr_thread_yield(); - } - - return 1; - } - else { /* the only other way out is a restart */ - /* 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; - - ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf, - "Graceful restart requested, doing restart"); - - /* Wait for all of the threads to terminate before initiating the restart */ - while (worker_thread_count > 0) { - printf ("\rRestart pending. Waiting for %d thread(s) to terminate...", - worker_thread_count); - apr_thread_yield(); - } - printf ("\nRestarting...\n"); - } - - return 0; -} - -static int netware_pre_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp) -{ - int debug; - char *addrname = NULL; - - mpm_state = AP_MPMQ_STARTING; - - debug = ap_exists_config_define("DEBUG"); - - is_graceful = 0; - ap_my_pid = getpid(); - addrname = getaddressspacename (NULL, NULL); - if (addrname) { - ap_my_addrspace = apr_pstrdup (p, addrname); - free (addrname); - } - - ap_listen_pre_config(); - ap_threads_to_start = DEFAULT_START_THREADS; - ap_threads_min_free = DEFAULT_MIN_FREE_THREADS; - ap_threads_max_free = DEFAULT_MAX_FREE_THREADS; - ap_threads_limit = HARD_THREAD_LIMIT; - ap_max_requests_per_child = DEFAULT_MAX_REQUESTS_PER_CHILD; - ap_extended_status = 0; -#ifdef AP_MPM_WANT_SET_MAX_MEM_FREE - ap_max_mem_free = APR_ALLOCATOR_MAX_FREE_UNLIMITED; -#endif - - return OK; -} - -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 *opt_arg; - apr_getopt_t *opt; - apr_array_header_t *mpm_new_argv; - - - atexit (mpm_term); - InstallConsoleHandler(); - - /* Make sure to hold the Apache screen open if exit() is called */ - hold_screen_on_exit = 1; - - /* 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] = '\0'; - 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"n:", optbuf + 1, &opt_arg) == APR_SUCCESS) { - switch (optbuf[1]) { - case 'n': - if (opt_arg) { - renamescreen(opt_arg); - } - break; - case 'E': - /* Don't need to hold the screen open if the output is going to a file */ - hold_screen_on_exit = -1; - default: - *(const char **)apr_array_push(mpm_new_argv) = - apr_pstrdup(process->pool, optbuf); - - if (opt_arg) { - *(const char **)apr_array_push(mpm_new_argv) = opt_arg; - } - break; - } - } - process->argc = mpm_new_argv->nelts; - process->argv = (const char * const *) mpm_new_argv->elts; - } - } -} - -static int CommandLineInterpreter(scr_t screenID, const char *commandLine) -{ - char *szCommand = "APACHE2 "; - int iCommandLen = 8; - char szcommandLine[256]; - char *pID; - screenID = screenID; - - - if (commandLine == NULL) - return NOTMYCOMMAND; - if (strlen(commandLine) <= strlen(szCommand)) - return NOTMYCOMMAND; - - strncpy (szcommandLine, commandLine, sizeof(szcommandLine)-1); - - /* All added commands begin with "APACHE2 " */ - - if (!strnicmp(szCommand, szcommandLine, iCommandLen)) { - ActivateScreen (getscreenhandle()); - - /* If an instance id was not given but the nlm is loaded in - protected space, then the the command belongs to the - OS address space instance to pass it on. */ - pID = strstr (szcommandLine, "-p"); - if ((pID == NULL) && nlmisloadedprotected()) - return NOTMYCOMMAND; - - /* If we got an instance id but it doesn't match this - instance of the nlm, pass it on. */ - if (pID) { - pID = &pID[2]; - while (*pID && (*pID == ' ')) - pID++; - } - if (pID && ap_my_addrspace && strnicmp(pID, ap_my_addrspace, strlen(ap_my_addrspace))) - return NOTMYCOMMAND; - - /* If we have determined that this command belongs to this - instance of the nlm, then handle it. */ - if (!strnicmp("RESTART",&szcommandLine[iCommandLen],3)) { - printf("Restart Requested...\n"); - restart(); - } - else if (!strnicmp("VERSION",&szcommandLine[iCommandLen],3)) { - printf("Server version: %s\n", ap_get_server_version()); - printf("Server built: %s\n", ap_get_server_built()); - } - else if (!strnicmp("MODULES",&szcommandLine[iCommandLen],3)) { - ap_show_modules(); - } - else if (!strnicmp("DIRECTIVES",&szcommandLine[iCommandLen],3)) { - ap_show_directives(); - } - else if (!strnicmp("SHUTDOWN",&szcommandLine[iCommandLen],3)) { - printf("Shutdown Requested...\n"); - shutdown_pending = 1; - } - else if (!strnicmp("SETTINGS",&szcommandLine[iCommandLen],3)) { - if (show_settings) { - show_settings = 0; - ClearScreen (getscreenhandle()); - show_server_data(); - } - else { - show_settings = 1; - display_settings(); - } - } - else { - show_settings = 0; - if (strnicmp("HELP",&szcommandLine[iCommandLen],3)) - printf("Unknown APACHE2 command %s\n", &szcommandLine[iCommandLen]); - printf("Usage: APACHE2 [command] [-p <instance ID>]\n"); - printf("Commands:\n"); - printf("\tDIRECTIVES - Show directives\n"); - printf("\tHELP - Display this help information\n"); - printf("\tMODULES - Show a list of the loaded modules\n"); - printf("\tRESTART - Reread the configuration file and restart Apache\n"); - printf("\tSETTINGS - Show current thread status\n"); - printf("\tSHUTDOWN - Shutdown Apache\n"); - printf("\tVERSION - Display the server version information\n"); - } - - /* Tell NetWare we handled the command */ - return HANDLEDCOMMAND; - } - - /* Tell NetWare that the command isn't mine */ - return NOTMYCOMMAND; -} - -static int InstallConsoleHandler(void) -{ - /* Our command line handler interfaces the system operator - with this NLM */ - - NX_WRAP_INTERFACE(CommandLineInterpreter, 2, (void*)&(ConsoleHandler.parser)); - - ConsoleHandler.rTag = AllocateResourceTag(getnlmhandle(), "Command Line Processor", - ConsoleCommandSignature); - if (!ConsoleHandler.rTag) - { - printf("Error on allocate resource tag\n"); - return 1; - } - - RegisterConsoleCommand(&ConsoleHandler); - - /* The Remove procedure unregisters the console handler */ - - return 0; -} - -static void RemoveConsoleHandler(void) -{ - UnRegisterConsoleCommand(&ConsoleHandler); - NX_UNWRAP_INTERFACE(ConsoleHandler.parser); -} - -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, 0, NULL, - "WARNING: detected MinSpareServers set to non-positive."); - ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, - "Resetting to 1 to avoid almost certain Apache failure."); - ap_log_error(APLOG_MARK, APLOG_STARTUP, 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, 0, NULL, - "WARNING: MaxThreads of %d exceeds compile time limit " - "of %d threads,", ap_threads_limit, HARD_THREAD_LIMIT); - ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, - " lowering MaxThreads to %d. To increase, please " - "see the", HARD_THREAD_LIMIT); - ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, - " HARD_THREAD_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, 0, NULL, - "WARNING: Require MaxThreads > 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 */ -}; |