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-rw-r--r--external/unbound/util/shm_side/shm_main.c286
1 files changed, 0 insertions, 286 deletions
diff --git a/external/unbound/util/shm_side/shm_main.c b/external/unbound/util/shm_side/shm_main.c
deleted file mode 100644
index cab9aed56..000000000
--- a/external/unbound/util/shm_side/shm_main.c
+++ /dev/null
@@ -1,286 +0,0 @@
-/*
- * util/shm_side/shm_main.c - SHM for statistics transport
- *
- * Copyright (c) 2017, NLnet Labs. All rights reserved.
- *
- * This software is open source.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- *
- * 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.
- *
- * Neither the name of the NLNET LABS nor the names of its contributors may
- * be used to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS 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 COPYRIGHT
- * HOLDER OR 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.
- */
-
-/**
- * \file
- *
- * This file contains functions for the SHM implementation.
- */
-
-#include "config.h"
-#include <ctype.h>
-#include <stdarg.h>
-#ifdef HAVE_SYS_IPC_H
-#include <sys/ipc.h>
-#endif
-#ifdef HAVE_SYS_SHM_H
-#include <sys/shm.h>
-#endif
-#include <sys/time.h>
-#include <errno.h>
-#include "shm_main.h"
-#include "daemon/daemon.h"
-#include "daemon/worker.h"
-#include "daemon/stats.h"
-#include "services/mesh.h"
-#include "services/cache/rrset.h"
-#include "services/cache/infra.h"
-#include "validator/validator.h"
-#include "util/config_file.h"
-#include "util/fptr_wlist.h"
-#include "util/log.h"
-
-#ifdef HAVE_SHMGET
-/** subtract timers and the values do not overflow or become negative */
-static void
-timeval_subtract(struct timeval* d, const struct timeval* end,
- const struct timeval* start)
-{
-#ifndef S_SPLINT_S
- time_t end_usec = end->tv_usec;
- d->tv_sec = end->tv_sec - start->tv_sec;
- if(end_usec < start->tv_usec) {
- end_usec += 1000000;
- d->tv_sec--;
- }
- d->tv_usec = end_usec - start->tv_usec;
-#endif
-}
-#endif /* HAVE_SHMGET */
-
-int shm_main_init(struct daemon* daemon)
-{
-#ifdef HAVE_SHMGET
- struct shm_stat_info *shm_stat;
- size_t shm_size;
-
- /* sanitize */
- if(!daemon)
- return 0;
- if(!daemon->cfg->shm_enable)
- return 1;
- if(daemon->cfg->stat_interval == 0)
- log_warn("shm-enable is yes but statistics-interval is 0");
-
- /* Statistics to maintain the number of thread + total */
- shm_size = (sizeof(struct stats_info) * (daemon->num + 1));
-
- /* Allocation of needed memory */
- daemon->shm_info = (struct shm_main_info*)calloc(1, shm_size);
-
- /* Sanitize */
- if(!daemon->shm_info) {
- log_err("shm fail: malloc failure");
- return 0;
- }
-
- daemon->shm_info->key = daemon->cfg->shm_key;
-
- /* Check for previous create SHM */
- daemon->shm_info->id_ctl = shmget(daemon->shm_info->key, sizeof(int), SHM_R);
- daemon->shm_info->id_arr = shmget(daemon->shm_info->key + 1, sizeof(int), SHM_R);
-
- /* Destroy previous SHM */
- if (daemon->shm_info->id_ctl >= 0)
- shmctl(daemon->shm_info->id_ctl, IPC_RMID, NULL);
-
- /* Destroy previous SHM */
- if (daemon->shm_info->id_arr >= 0)
- shmctl(daemon->shm_info->id_arr, IPC_RMID, NULL);
-
- /* SHM: Create the segment */
- daemon->shm_info->id_ctl = shmget(daemon->shm_info->key, sizeof(struct shm_stat_info), IPC_CREAT | 0666);
-
- if (daemon->shm_info->id_ctl < 0)
- {
- log_err("SHM failed(id_ctl) cannot shmget(key %d) %s",
- daemon->shm_info->key, strerror(errno));
-
- /* Just release memory unused */
- free(daemon->shm_info);
-
- return 0;
- }
-
- daemon->shm_info->id_arr = shmget(daemon->shm_info->key + 1, shm_size, IPC_CREAT | 0666);
-
- if (daemon->shm_info->id_arr < 0)
- {
- log_err("SHM failed(id_arr) cannot shmget(key %d + 1) %s",
- daemon->shm_info->key, strerror(errno));
-
- /* Just release memory unused */
- free(daemon->shm_info);
-
- return 0;
- }
-
- /* SHM: attach the segment */
- daemon->shm_info->ptr_ctl = (struct shm_stat_info*)
- shmat(daemon->shm_info->id_ctl, NULL, 0);
- if(daemon->shm_info->ptr_ctl == (void *) -1) {
- log_err("SHM failed(ctl) cannot shmat(%d) %s",
- daemon->shm_info->id_ctl, strerror(errno));
-
- /* Just release memory unused */
- free(daemon->shm_info);
-
- return 0;
- }
-
- daemon->shm_info->ptr_arr = (struct stats_info*)
- shmat(daemon->shm_info->id_arr, NULL, 0);
-
- if (daemon->shm_info->ptr_arr == (void *) -1)
- {
- log_err("SHM failed(arr) cannot shmat(%d) %s",
- daemon->shm_info->id_arr, strerror(errno));
-
- /* Just release memory unused */
- free(daemon->shm_info);
-
- return 0;
- }
-
- /* Zero fill SHM to stand clean while is not filled by other events */
- memset(daemon->shm_info->ptr_ctl, 0, sizeof(struct shm_stat_info));
- memset(daemon->shm_info->ptr_arr, 0, shm_size);
-
- shm_stat = daemon->shm_info->ptr_ctl;
- shm_stat->num_threads = daemon->num;
-
-#else
- (void)daemon;
-#endif /* HAVE_SHMGET */
- return 1;
-}
-
-void shm_main_shutdown(struct daemon* daemon)
-{
-#ifdef HAVE_SHMGET
- /* web are OK, just disabled */
- if(!daemon->cfg->shm_enable)
- return;
-
- verbose(VERB_DETAIL, "SHM shutdown - KEY [%d] - ID CTL [%d] ARR [%d] - PTR CTL [%p] ARR [%p]",
- daemon->shm_info->key, daemon->shm_info->id_ctl, daemon->shm_info->id_arr, daemon->shm_info->ptr_ctl, daemon->shm_info->ptr_arr);
-
- /* Destroy previous SHM */
- if (daemon->shm_info->id_ctl >= 0)
- shmctl(daemon->shm_info->id_ctl, IPC_RMID, NULL);
-
- if (daemon->shm_info->id_arr >= 0)
- shmctl(daemon->shm_info->id_arr, IPC_RMID, NULL);
-
- if (daemon->shm_info->ptr_ctl)
- shmdt(daemon->shm_info->ptr_ctl);
-
- if (daemon->shm_info->ptr_arr)
- shmdt(daemon->shm_info->ptr_arr);
-
-#else
- (void)daemon;
-#endif /* HAVE_SHMGET */
-}
-
-void shm_main_run(struct worker *worker)
-{
-#ifdef HAVE_SHMGET
- struct shm_stat_info *shm_stat;
- struct stats_info *stat_total;
- struct stats_info *stat_info;
- int modstack;
- int offset;
-
- verbose(VERB_DETAIL, "SHM run - worker [%d] - daemon [%p] - timenow(%u) - timeboot(%u)",
- worker->thread_num, worker->daemon, (unsigned)worker->env.now_tv->tv_sec, (unsigned)worker->daemon->time_boot.tv_sec);
-
- offset = worker->thread_num + 1;
- stat_total = worker->daemon->shm_info->ptr_arr;
- stat_info = worker->daemon->shm_info->ptr_arr + offset;
-
- /* Copy data to the current position */
- server_stats_compile(worker, stat_info, 0);
-
- /* First thread, zero fill total, and copy general info */
- if (worker->thread_num == 0) {
-
- /* Copy data to the current position */
- memset(stat_total, 0, sizeof(struct stats_info));
-
- /* Point to data into SHM */
- shm_stat = worker->daemon->shm_info->ptr_ctl;
- shm_stat->time.now = *worker->env.now_tv;
-
- timeval_subtract(&shm_stat->time.up, &shm_stat->time.now, &worker->daemon->time_boot);
- timeval_subtract(&shm_stat->time.elapsed, &shm_stat->time.now, &worker->daemon->time_last_stat);
-
- shm_stat->mem.msg = slabhash_get_mem(worker->env.msg_cache);
- shm_stat->mem.rrset = slabhash_get_mem(&worker->env.rrset_cache->table);
- shm_stat->mem.val = 0;
- shm_stat->mem.iter = 0;
-
- modstack = modstack_find(&worker->env.mesh->mods, "validator");
- if(modstack != -1) {
- fptr_ok(fptr_whitelist_mod_get_mem(worker->env.mesh->mods.mod[modstack]->get_mem));
- shm_stat->mem.val = (*worker->env.mesh->mods.mod[modstack]->get_mem)(&worker->env, modstack);
- }
- modstack = modstack_find(&worker->env.mesh->mods, "iterator");
- if(modstack != -1) {
- fptr_ok(fptr_whitelist_mod_get_mem(worker->env.mesh->mods.mod[modstack]->get_mem));
- shm_stat->mem.iter = (*worker->env.mesh->mods.mod[modstack]->get_mem)(&worker->env, modstack);
- }
- /* subnet mem value is available in shm, also when not enabled,
- * to make the struct easier to memmap by other applications,
- * independent of the configuration of unbound */
- shm_stat->mem.subnet = 0;
-#ifdef CLIENT_SUBNET
- modstack = modstack_find(&worker->env.mesh->mods, "subnet");
- if(modstack != -1) {
- fptr_ok(fptr_whitelist_mod_get_mem(worker->env.mesh->mods.mod[modstack]->get_mem));
- shm_stat->mem.subnet = (*worker->env.mesh->mods.mod[modstack]->get_mem)(&worker->env, modstack);
- }
-#endif
- }
-
- server_stats_add(stat_total, stat_info);
-
- /* print the thread statistics */
- stat_total->mesh_time_median /= (double)worker->daemon->num;
-
-#else
- (void)worker;
-#endif /* HAVE_SHMGET */
-}
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