]> granicus.if.org Git - apache/blobdiff - server/scoreboard.c
Update the copyright year in all .c, .h and .xml files
[apache] / server / scoreboard.c
index d9398a4a4f3d3d0672c2e1e4887dc0c9d0b25654..1a5b8047978447e3e65295fe9c91939b2d42237c 100644 (file)
@@ -1,59 +1,17 @@
-/* ====================================================================
- * The Apache Software License, Version 1.1
+/* Copyright 2001-2006 The Apache Software Foundation or its licensors, as
+ * applicable.
  *
- * Copyright (c) 2000-2001 The Apache Software Foundation.  All rights
- * reserved.
+ * Licensed 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
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * 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.
+ * 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.
  */
 
 #include "apr.h"
 #include "scoreboard.h"
 
 AP_DECLARE_DATA scoreboard *ap_scoreboard_image = NULL;
-AP_DECLARE_DATA const char *ap_scoreboard_fname=NULL;
+AP_DECLARE_DATA const char *ap_scoreboard_fname = NULL;
 AP_DECLARE_DATA int ap_extended_status = 0;
-AP_DECLARE_DATA apr_time_t ap_restart_time = 0;
 
 #if APR_HAS_SHARED_MEMORY
-#include "apr_shmem.h"
-static apr_shmem_t *scoreboard_shm = NULL;
+
+#include "apr_shm.h"
+
+#ifndef WIN32
+static /* but must be exported to mpm_winnt */
+#endif
+        apr_shm_t *ap_scoreboard_shm = NULL;
+
 #endif
+
+APR_HOOK_STRUCT(
+    APR_HOOK_LINK(pre_mpm)
+)
+
+AP_IMPLEMENT_HOOK_RUN_ALL(int,pre_mpm,
+                          (apr_pool_t *p, ap_scoreboard_e sb_type),
+                          (p, sb_type),OK,DECLINED)
+
+static APR_OPTIONAL_FN_TYPE(ap_proxy_lb_workers)
+                                *proxy_lb_workers;
+
+struct ap_sb_handle_t {
+    int child_num;
+    int thread_num;
+};
+
+static int server_limit, thread_limit, lb_limit;
+static apr_size_t scoreboard_size;
+
 /*
  * ToDo:
  * This function should be renamed to cleanup_shared
  * and it should handle cleaning up a scoreboard shared
  * between processes using any form of IPC (file, shared memory
  * segment, etc.). Leave it as is now because it is being used
- * by various MPMs. 
+ * by various MPMs.
  */
 static apr_status_t ap_cleanup_shared_mem(void *d)
 {
 #if APR_HAS_SHARED_MEMORY
-    apr_shm_free(scoreboard_shm, ap_scoreboard_image);
+    free(ap_scoreboard_image);
     ap_scoreboard_image = NULL;
-    apr_shm_destroy(scoreboard_shm);
+    apr_shm_destroy(ap_scoreboard_shm);
 #endif
     return APR_SUCCESS;
 }
 
-/* ToDo: This function should be made to handle setting up 
- * a scoreboard shared between processes using any IPC technique, 
+AP_DECLARE(int) ap_calc_scoreboard_size(void)
+{
+    ap_mpm_query(AP_MPMQ_HARD_LIMIT_THREADS, &thread_limit);
+    ap_mpm_query(AP_MPMQ_HARD_LIMIT_DAEMONS, &server_limit);
+
+    if (!proxy_lb_workers)
+        proxy_lb_workers = APR_RETRIEVE_OPTIONAL_FN(ap_proxy_lb_workers);
+    if (proxy_lb_workers)
+        lb_limit = proxy_lb_workers();
+    else
+        lb_limit = 0;
+
+    scoreboard_size = sizeof(global_score);
+    scoreboard_size += sizeof(process_score) * server_limit;
+    scoreboard_size += sizeof(worker_score) * server_limit * thread_limit;
+    if (lb_limit)
+        scoreboard_size += sizeof(lb_score) * lb_limit;
+
+    return scoreboard_size;
+}
+
+void ap_init_scoreboard(void *shared_score)
+{
+    char *more_storage;
+    int i;
+
+    ap_calc_scoreboard_size();
+    ap_scoreboard_image =
+        calloc(1, sizeof(scoreboard) + server_limit * sizeof(worker_score *) +
+               server_limit * lb_limit * sizeof(lb_score *));
+    more_storage = shared_score;
+    ap_scoreboard_image->global = (global_score *)more_storage;
+    more_storage += sizeof(global_score);
+    ap_scoreboard_image->parent = (process_score *)more_storage;
+    more_storage += sizeof(process_score) * server_limit;
+    ap_scoreboard_image->servers =
+        (worker_score **)((char*)ap_scoreboard_image + sizeof(scoreboard));
+    for (i = 0; i < server_limit; i++) {
+        ap_scoreboard_image->servers[i] = (worker_score *)more_storage;
+        more_storage += thread_limit * sizeof(worker_score);
+    }
+    if (lb_limit) {
+        ap_scoreboard_image->balancers = (lb_score *)more_storage;
+        more_storage += lb_limit * sizeof(lb_score);
+    }
+    ap_assert(more_storage == (char*)shared_score + scoreboard_size);
+    ap_scoreboard_image->global->server_limit = server_limit;
+    ap_scoreboard_image->global->thread_limit = thread_limit;
+    ap_scoreboard_image->global->lb_limit     = lb_limit;
+}
+
+/**
+ * Create a name-based scoreboard in the given pool using the
+ * given filename.
+ */
+static apr_status_t create_namebased_scoreboard(apr_pool_t *pool,
+                                                const char *fname)
+{
+#if APR_HAS_SHARED_MEMORY
+    apr_status_t rv;
+
+    /* The shared memory file must not exist before we create the
+     * segment. */
+    apr_shm_remove(fname, pool); /* ignore errors */
+
+    rv = apr_shm_create(&ap_scoreboard_shm, scoreboard_size, fname, pool);
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL,
+                     "unable to create scoreboard \"%s\" "
+                     "(name-based shared memory failure)", fname);
+        return rv;
+    }
+#endif /* APR_HAS_SHARED_MEMORY */
+    return APR_SUCCESS;
+}
+
+/* ToDo: This function should be made to handle setting up
+ * a scoreboard shared between processes using any IPC technique,
  * not just a shared memory segment
  */
-static void setup_shared(apr_pool_t *p)
+static apr_status_t open_scoreboard(apr_pool_t *pconf)
 {
 #if APR_HAS_SHARED_MEMORY
-    char buf[512];
-    char errmsg[120];
-    const char *fname;
     apr_status_t rv;
+    char *fname = NULL;
+    apr_pool_t *global_pool;
 
-    fname = ap_server_root_relative(p, ap_scoreboard_fname);
-    rv = apr_shm_init(&scoreboard_shm, SCOREBOARD_SIZE, fname, p);
+    /* We don't want to have to recreate the scoreboard after
+     * restarts, so we'll create a global pool and never clean it.
+     */
+    rv = apr_pool_create(&global_pool, NULL);
     if (rv != APR_SUCCESS) {
-        apr_snprintf(buf, sizeof(buf), "%s: could not open(create) scoreboard: %s",
-                    ap_server_argv0, apr_strerror(rv, errmsg, sizeof errmsg));
-        fprintf(stderr, "%s\n", buf);
-        exit(APEXIT_INIT);
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL,
+                     "Fatal error: unable to create global pool "
+                     "for use with by the scoreboard");
+        return rv;
     }
-    ap_scoreboard_image = apr_shm_malloc(scoreboard_shm, SCOREBOARD_SIZE);
-    if (ap_scoreboard_image == NULL) {
-        apr_snprintf(buf, sizeof(buf), "%s: cannot allocate scoreboard",
-                    ap_server_argv0);
-        perror(buf); /* o.k. since MM sets errno */
-        apr_shm_destroy(scoreboard_shm);
-        exit(APEXIT_INIT);
+
+    /* The config says to create a name-based shmem */
+    if (ap_scoreboard_fname) {
+        /* make sure it's an absolute pathname */
+        fname = ap_server_root_relative(pconf, ap_scoreboard_fname);
+        if (!fname) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, APR_EBADPATH, NULL,
+                         "Fatal error: Invalid Scoreboard path %s",
+                         ap_scoreboard_fname);
+            return APR_EBADPATH;
+        }
+        return create_namebased_scoreboard(global_pool, fname);
     }
-    ap_scoreboard_image->global.running_generation = 0;
-#endif
+    else { /* config didn't specify, we get to choose shmem type */
+        rv = apr_shm_create(&ap_scoreboard_shm, scoreboard_size, NULL,
+                            global_pool); /* anonymous shared memory */
+        if ((rv != APR_SUCCESS) && (rv != APR_ENOTIMPL)) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL,
+                         "Unable to create scoreboard "
+                         "(anonymous shared memory failure)");
+            return rv;
+        }
+        /* Make up a filename and do name-based shmem */
+        else if (rv == APR_ENOTIMPL) {
+            /* Make sure it's an absolute pathname */
+            ap_scoreboard_fname = DEFAULT_SCOREBOARD;
+            fname = ap_server_root_relative(pconf, ap_scoreboard_fname);
+
+            return create_namebased_scoreboard(global_pool, fname);
+        }
+    }
+#endif /* APR_HAS_SHARED_MEMORY */
+    return APR_SUCCESS;
 }
 
-AP_DECLARE(void) reopen_scoreboard(apr_pool_t *p)
+/* If detach is non-zero, this is a seperate child process,
+ * if zero, it is a forked child.
+ */
+apr_status_t ap_reopen_scoreboard(apr_pool_t *p, apr_shm_t **shm, int detached)
 {
+#if APR_HAS_SHARED_MEMORY
+    if (!detached) {
+        return APR_SUCCESS;
+    }
+    if (apr_shm_size_get(ap_scoreboard_shm) < scoreboard_size) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, 0, NULL,
+                     "Fatal error: shared scoreboard too small for child!");
+        apr_shm_detach(ap_scoreboard_shm);
+        ap_scoreboard_shm = NULL;
+        return APR_EINVAL;
+    }
+    /* everything will be cleared shortly */
+    if (*shm) {
+        *shm = ap_scoreboard_shm;
+    }
+#endif
+    return APR_SUCCESS;
 }
 
-/* ap_cleanup_scoreboard
- * 
- */
-apr_status_t ap_cleanup_scoreboard(void *d) {
-    if (ap_scoreboard_image == NULL)
+apr_status_t ap_cleanup_scoreboard(void *d)
+{
+    if (ap_scoreboard_image == NULL) {
         return APR_SUCCESS;
-    if (ap_scoreboard_image->global.sb_type == SB_SHARED) {
+    }
+    if (ap_scoreboard_image->global->sb_type == SB_SHARED) {
         ap_cleanup_shared_mem(NULL);
     }
     else {
+        free(ap_scoreboard_image->global);
         free(ap_scoreboard_image);
         ap_scoreboard_image = NULL;
     }
     return APR_SUCCESS;
 }
 
-/* ap_create_scoreboard(apr_pool_t*, ap_scoreboard_e t)
- *
- * Create or reinit an existing scoreboard. The MPM can control whether
+/* Create or reinit an existing scoreboard. The MPM can control whether
  * the scoreboard is shared across multiple processes or not
  */
-AP_DECLARE(void) ap_create_scoreboard(apr_pool_t *p, ap_scoreboard_e sb_type)
+int ap_create_scoreboard(apr_pool_t *p, ap_scoreboard_e sb_type)
 {
     int running_gen = 0;
-    if (ap_scoreboard_image)
-       running_gen = ap_scoreboard_image->global.running_generation;
-    if (ap_scoreboard_image == NULL) {
-        if (sb_type == SB_SHARED) {
-            setup_shared(p);
+    int i;
+#if APR_HAS_SHARED_MEMORY
+    apr_status_t rv;
+#endif
+
+    if (ap_scoreboard_image) {
+        running_gen = ap_scoreboard_image->global->running_generation;
+        ap_scoreboard_image->global->restart_time = apr_time_now();
+        memset(ap_scoreboard_image->parent, 0,
+               sizeof(process_score) * server_limit);
+        for (i = 0; i < server_limit; i++) {
+            memset(ap_scoreboard_image->servers[i], 0,
+                   sizeof(worker_score) * thread_limit);
         }
-        else {
-            /* A simple malloc will suffice */
-            char buf[512];
-            ap_scoreboard_image = (scoreboard *) malloc(SCOREBOARD_SIZE);
-            if (ap_scoreboard_image == NULL) {
-                apr_snprintf(buf, sizeof(buf), "%s: cannot allocate scoreboard",
-                             ap_server_argv0);
-                perror(buf); /* o.k. since MM sets errno */
-                exit(APEXIT_INIT);            
-            }
+        /* Clean up the lb workers data */
+        if (lb_limit) {
+            memset(ap_scoreboard_image->balancers, 0,
+                   sizeof(lb_score) * lb_limit);
         }
+        return OK;
     }
-    memset(ap_scoreboard_image, 0, SCOREBOARD_SIZE);
-    ap_scoreboard_image->global.sb_type = sb_type;
-    ap_scoreboard_image->global.running_generation = running_gen;
-    ap_restart_time = apr_time_now();
+
+    ap_calc_scoreboard_size();
+#if APR_HAS_SHARED_MEMORY
+    if (sb_type == SB_SHARED) {
+        void *sb_shared;
+        rv = open_scoreboard(p);
+        if (rv || !(sb_shared = apr_shm_baseaddr_get(ap_scoreboard_shm))) {
+            return HTTP_INTERNAL_SERVER_ERROR;
+        }
+        memset(sb_shared, 0, scoreboard_size);
+        ap_init_scoreboard(sb_shared);
+    }
+    else
+#endif
+    {
+        /* A simple malloc will suffice */
+        void *sb_mem = calloc(1, scoreboard_size);
+        if (sb_mem == NULL) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, 0, NULL,
+                         "(%d)%s: cannot allocate scoreboard",
+                         errno, strerror(errno));
+            return HTTP_INTERNAL_SERVER_ERROR;
+        }
+        ap_init_scoreboard(sb_mem);
+    }
+
+    ap_scoreboard_image->global->sb_type = sb_type;
+    ap_scoreboard_image->global->running_generation = running_gen;
+    ap_scoreboard_image->global->restart_time = apr_time_now();
+
     apr_pool_cleanup_register(p, NULL, ap_cleanup_scoreboard, apr_pool_cleanup_null);
+
+    return OK;
 }
 
 /* Routines called to deal with the scoreboard image
@@ -202,40 +334,16 @@ AP_DECLARE(void) ap_create_scoreboard(apr_pool_t *p, ap_scoreboard_e sb_type)
  * anyway.
  */
 
-void ap_sync_scoreboard_image(void)
-{
-}
-
 AP_DECLARE(int) ap_exists_scoreboard_image(void)
 {
     return (ap_scoreboard_image ? 1 : 0);
 }
 
-static APR_INLINE void put_scoreboard_info(int child_num, int thread_num, 
-                                      worker_score *new_score_rec)
-{
-    /* XXX - needs to be fixed to account for threads */
-#ifdef SCOREBOARD_FILE
-    lseek(scoreboard_fd, (long) child_num * sizeof(worker_score), 0);
-    force_write(scoreboard_fd, new_score_rec, sizeof(worker_score));
-#endif
-}
-
-void update_scoreboard_global(void)
-{
-#ifdef SCOREBOARD_FILE
-    lseek(scoreboard_fd,
-         (char *) &ap_scoreboard_image->global -(char *) ap_scoreboard_image, 0);
-    force_write(scoreboard_fd, &ap_scoreboard_image->global,
-               sizeof ap_scoreboard_image->global);
-#endif
-}
-
-AP_DECLARE(void) ap_increment_counts(int child_num, int thread_num, request_rec *r)
+AP_DECLARE(void) ap_increment_counts(ap_sb_handle_t *sb, request_rec *r)
 {
     worker_score *ws;
 
-    ws = &ap_scoreboard_image->servers[child_num][thread_num];
+    ws = &ap_scoreboard_image->servers[sb->child_num][sb->thread_num];
 
 #ifdef HAVE_TIMES
     times(&ws->times);
@@ -246,114 +354,145 @@ AP_DECLARE(void) ap_increment_counts(int child_num, int thread_num, request_rec
     ws->bytes_served += r->bytes_sent;
     ws->my_bytes_served += r->bytes_sent;
     ws->conn_bytes += r->bytes_sent;
-
-    put_scoreboard_info(child_num, thread_num, ws);
 }
 
-AP_DECLARE(int) find_child_by_pid(apr_proc_t *pid)
+int find_child_by_pid(apr_proc_t *pid)
 {
     int i;
     int max_daemons_limit;
 
     ap_mpm_query(AP_MPMQ_MAX_DAEMONS, &max_daemons_limit);
 
-    for (i = 0; i < max_daemons_limit; ++i)
-       if (ap_scoreboard_image->parent[i].pid == pid->pid)
-           return i;
+    for (i = 0; i < max_daemons_limit; ++i) {
+        if (ap_scoreboard_image->parent[i].pid == pid->pid) {
+            return i;
+        }
+    }
 
     return -1;
 }
 
-int ap_update_child_status(int child_num, int thread_num, int status, request_rec *r)
+AP_DECLARE(void) ap_create_sb_handle(ap_sb_handle_t **new_sbh, apr_pool_t *p,
+                                     int child_num, int thread_num)
+{
+    *new_sbh = (ap_sb_handle_t *)apr_palloc(p, sizeof(ap_sb_handle_t));
+    (*new_sbh)->child_num = child_num;
+    (*new_sbh)->thread_num = thread_num;
+}
+
+AP_DECLARE(int) ap_update_child_status_from_indexes(int child_num,
+                                                    int thread_num,
+                                                    int status,
+                                                    request_rec *r)
 {
     int old_status;
     worker_score *ws;
     process_score *ps;
 
-    if (child_num < 0)
-       return -1;
+    if (child_num < 0) {
+        return -1;
+    }
 
     ws = &ap_scoreboard_image->servers[child_num][thread_num];
     old_status = ws->status;
     ws->status = status;
 
     ps = &ap_scoreboard_image->parent[child_num];
-    
+
     if (status == SERVER_READY
-       && old_status == SERVER_STARTING) {
-        ws->thread_num = child_num * HARD_SERVER_LIMIT + thread_num;
+        && old_status == SERVER_STARTING) {
+        ws->thread_num = child_num * thread_limit + thread_num;
         ps->generation = ap_my_generation;
-        ps->worker_threads = ap_threads_per_child;
     }
 
     if (ap_extended_status) {
-    ws->last_used = apr_time_now();
-       if (status == SERVER_READY || status == SERVER_DEAD) {
-           /*
-            * Reset individual counters
-            */
-           if (status == SERVER_DEAD) {
-               ws->my_access_count = 0L;
-               ws->my_bytes_served = 0L;
-           }
-           ws->conn_count = (unsigned short) 0;
-           ws->conn_bytes = (unsigned long) 0;
-       }
-       if (r) {
-           conn_rec *c = r->connection;
-           apr_cpystrn(ws->client, ap_get_remote_host(c, r->per_dir_config,
-                                 REMOTE_NOLOOKUP, NULL), sizeof(ws->client));
-           if (r->the_request == NULL) {
-                   apr_cpystrn(ws->request, "NULL", sizeof(ws->request));
-           } else if (r->parsed_uri.password == NULL) {
-                   apr_cpystrn(ws->request, r->the_request, sizeof(ws->request));
-           } else {
-               /* Don't reveal the password in the server-status view */
-                   apr_cpystrn(ws->request, apr_pstrcat(r->pool, r->method, " ",
-                                              apr_uri_unparse_components(r->pool, &r->parsed_uri, UNP_OMITPASSWORD),
-                                              r->assbackwards ? NULL : " ", r->protocol, NULL),
-                                      sizeof(ws->request));
-           }
-           ws->vhostrec =  r->server;
-       }
+        ws->last_used = apr_time_now();
+        if (status == SERVER_READY || status == SERVER_DEAD) {
+            /*
+             * Reset individual counters
+             */
+            if (status == SERVER_DEAD) {
+                ws->my_access_count = 0L;
+                ws->my_bytes_served = 0L;
+            }
+            ws->conn_count = 0;
+            ws->conn_bytes = 0;
+        }
+        if (r) {
+            conn_rec *c = r->connection;
+            apr_cpystrn(ws->client, ap_get_remote_host(c, r->per_dir_config,
+                        REMOTE_NOLOOKUP, NULL), sizeof(ws->client));
+            if (r->the_request == NULL) {
+                apr_cpystrn(ws->request, "NULL", sizeof(ws->request));
+            } else if (r->parsed_uri.password == NULL) {
+                apr_cpystrn(ws->request, r->the_request, sizeof(ws->request));
+            } else {
+                /* Don't reveal the password in the server-status view */
+                apr_cpystrn(ws->request, apr_pstrcat(r->pool, r->method, " ",
+                            apr_uri_unparse(r->pool, &r->parsed_uri,
+                            APR_URI_UNP_OMITPASSWORD),
+                            r->assbackwards ? NULL : " ", r->protocol, NULL),
+                            sizeof(ws->request));
+            }
+            apr_cpystrn(ws->vhost, r->server->server_hostname,
+                        sizeof(ws->vhost));
+        }
     }
-    
-    put_scoreboard_info(child_num, thread_num, ws);
+
     return old_status;
 }
 
-void ap_time_process_request(int child_num, int thread_num, int status)
+AP_DECLARE(int) ap_update_child_status(ap_sb_handle_t *sbh, int status,
+                                      request_rec *r)
+{
+    return ap_update_child_status_from_indexes(sbh->child_num, sbh->thread_num,
+                                               status, r);
+}
+
+void ap_time_process_request(ap_sb_handle_t *sbh, int status)
 {
     worker_score *ws;
 
-    if (child_num < 0)
-       return;
+    if (sbh->child_num < 0) {
+        return;
+    }
 
-    ws = &ap_scoreboard_image->servers[child_num][thread_num];
+    ws = &ap_scoreboard_image->servers[sbh->child_num][sbh->thread_num];
 
     if (status == START_PREQUEST) {
-        ws->start_time = apr_time_now(); 
+        ws->start_time = apr_time_now();
     }
     else if (status == STOP_PREQUEST) {
-        ws->stop_time = apr_time_now(); 
+        ws->stop_time = apr_time_now();
     }
-    put_scoreboard_info(child_num, thread_num, ws);
 }
 
-worker_score *ap_get_servers_scoreboard(int x, int y)
+AP_DECLARE(worker_score *) ap_get_scoreboard_worker(int x, int y)
 {
-    if (((x < 0) || (HARD_SERVER_LIMIT < x)) ||
-        ((y < 0) || (HARD_THREAD_LIMIT < y))) {
+    if (((x < 0) || (server_limit < x)) ||
+        ((y < 0) || (thread_limit < y))) {
         return(NULL); /* Out of range */
     }
-    return(&ap_scoreboard_image->servers[x][y]);
+    return &ap_scoreboard_image->servers[x][y];
 }
 
-process_score *ap_get_parent_scoreboard(int x)
+AP_DECLARE(process_score *) ap_get_scoreboard_process(int x)
 {
-    if ((x < 0) || (HARD_SERVER_LIMIT < x)) {
+    if ((x < 0) || (server_limit < x)) {
         return(NULL); /* Out of range */
     }
-    return(&ap_scoreboard_image->parent[x]);
+    return &ap_scoreboard_image->parent[x];
 }
 
+AP_DECLARE(global_score *) ap_get_scoreboard_global()
+{
+    return ap_scoreboard_image->global;
+}
+
+AP_DECLARE(lb_score *) ap_get_scoreboard_lb(int lb_num)
+{
+    if (((lb_num < 0) || (lb_limit < lb_num))) {
+        return(NULL); /* Out of range */
+    }
+    return &ap_scoreboard_image->balancers[lb_num];
+}