diff options
Diffstat (limited to 'server/scoreboard.c')
| -rw-r--r-- | server/scoreboard.c | 525 |
1 files changed, 0 insertions, 525 deletions
diff --git a/server/scoreboard.c b/server/scoreboard.c deleted file mode 100644 index b1f5b69264..0000000000 --- a/server/scoreboard.c +++ /dev/null @@ -1,525 +0,0 @@ -/* ==================================================================== - * The Apache Software License, Version 1.1 - * - * Copyright (c) 2000-2002 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 "apr.h" -#include "apr_strings.h" -#include "apr_portable.h" -#include "apr_lib.h" - -#define APR_WANT_STRFUNC -#include "apr_want.h" - -#if APR_HAVE_SYS_TYPES_H -#include <sys/types.h> -#endif - -#include "ap_config.h" -#include "httpd.h" -#include "http_log.h" -#include "http_main.h" -#include "http_core.h" -#include "http_config.h" -#include "ap_mpm.h" - -#include "mpm.h" -#include "scoreboard.h" - -AP_DECLARE_DATA scoreboard *ap_scoreboard_image = NULL; -AP_DECLARE_DATA const char *ap_scoreboard_fname = NULL; -AP_DECLARE_DATA int ap_extended_status = 0; - -#if APR_HAS_SHARED_MEMORY - -#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) - -struct ap_sb_handle_t { - int child_num; - int thread_num; -}; - -static int server_limit, thread_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. - */ -static apr_status_t ap_cleanup_shared_mem(void *d) -{ -#if APR_HAS_SHARED_MEMORY - free(ap_scoreboard_image); - ap_scoreboard_image = NULL; - apr_shm_destroy(ap_scoreboard_shm); -#endif - return APR_SUCCESS; -} - -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); - scoreboard_size = sizeof(global_score); - scoreboard_size += sizeof(process_score) * server_limit; - scoreboard_size += sizeof(worker_score) * server_limit * thread_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 *)); - 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); - } - 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; -} - -/** - * 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_file_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 " - "(name-based shared memory failure)"); - 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 apr_status_t open_scoreboard(apr_pool_t *pconf) -{ -#if APR_HAS_SHARED_MEMORY - apr_status_t rv; - char *fname = NULL; - apr_pool_t *global_pool; - - /* 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) { - ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL, - "Fatal error: unable to create global pool " - "for use with by the scoreboard"); - return rv; - } - - /* 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); - } - 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; -} - -/* 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 | APLOG_NOERRNO, 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; -} - -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) { - ap_cleanup_shared_mem(NULL); - } - else { - free(ap_scoreboard_image->global); - free(ap_scoreboard_image); - ap_scoreboard_image = NULL; - } - return APR_SUCCESS; -} - -/* Create or reinit an existing scoreboard. The MPM can control whether - * the scoreboard is shared across multiple processes or not - */ -int ap_create_scoreboard(apr_pool_t *p, ap_scoreboard_e sb_type) -{ - int running_gen = 0; -#if APR_HAS_SHARED_MEMORY - apr_status_t rv; -#endif - - if (ap_scoreboard_image) { - running_gen = ap_scoreboard_image->global->running_generation; - } - - if (ap_scoreboard_image == NULL) { - 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 | APLOG_NOERRNO, 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 - * --- note that we do *not* need write locks, since update_child_status - * only updates a *single* record in place, and only one process writes to - * a given scoreboard slot at a time (either the child process owning that - * slot, or the parent, noting that the child has died). - * - * As a final note --- setting the score entry to getpid() is always safe, - * since when the parent is writing an entry, it's only noting SERVER_DEAD - * 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, sizeof(global_score) - + (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, 0, 0); - force_write(scoreboard_fd, &ap_scoreboard_image->global, - sizeof ap_scoreboard_image->global); -#endif -} - -AP_DECLARE(void) ap_increment_counts(ap_sb_handle_t *sb, request_rec *r) -{ - worker_score *ws; - - ws = &ap_scoreboard_image->servers[sb->child_num][sb->thread_num]; - -#ifdef HAVE_TIMES - times(&ws->times); -#endif - ws->access_count++; - ws->my_access_count++; - ws->conn_count++; - ws->bytes_served += r->bytes_sent; - ws->my_bytes_served += r->bytes_sent; - ws->conn_bytes += r->bytes_sent; - - put_scoreboard_info(sb->child_num, sb->thread_num, ws); -} - -AP_DECLARE(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; - } - } - - return -1; -} - -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; - } - - 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 * thread_limit + thread_num; - ps->generation = ap_my_generation; - } - - 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(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; -} - -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(int child_num, int thread_num, int status) -{ - worker_score *ws; - - if (child_num < 0) { - return; - } - - ws = &ap_scoreboard_image->servers[child_num][thread_num]; - - if (status == START_PREQUEST) { - ws->start_time = apr_time_now(); - } - else if (status == STOP_PREQUEST) { - ws->stop_time = apr_time_now(); - } - put_scoreboard_info(child_num, thread_num, ws); -} - -AP_DECLARE(worker_score *) ap_get_scoreboard_worker(int x, int y) -{ - if (((x < 0) || (server_limit < x)) || - ((y < 0) || (thread_limit < y))) { - return(NULL); /* Out of range */ - } - return &ap_scoreboard_image->servers[x][y]; -} - -AP_DECLARE(process_score *) ap_get_scoreboard_process(int x) -{ - if ((x < 0) || (server_limit < x)) { - return(NULL); /* Out of range */ - } - return &ap_scoreboard_image->parent[x]; -} - -AP_DECLARE(global_score *) ap_get_scoreboard_global() -{ - return ap_scoreboard_image->global; -} |