X-Git-Url: https://code.citadel.org/?a=blobdiff_plain;f=citadel%2Fthreads.c;h=b0856bf2277e50afd8d298f0e9fd4a4e19dc0d44;hb=HEAD;hp=062d19911870dc59c20660dfe4b6838c82041924;hpb=cdc34fa661ed54fdcebf86521496220cc28f4943;p=citadel.git

diff --git a/citadel/threads.c b/citadel/threads.c
deleted file mode 100644
index 062d19911..000000000
--- a/citadel/threads.c
+++ /dev/null
@@ -1,237 +0,0 @@
-/*
- * Thread handling stuff for Citadel server
- *
- * Copyright (c) 1987-2011 by the citadel.org team
- *
- * This program is open source software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <sys/types.h>
-#include <errno.h>
-#include <sys/socket.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <syslog.h>
-
-#include "sysdep.h"
-#if TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-#else
-# if HAVE_SYS_TIME_H
-#  include <sys/time.h>
-# else
-#  include <time.h>
-# endif
-#endif
-
-#ifdef HAVE_SYSCALL_H
-# include <syscall.h>
-#else 
-# if HAVE_SYS_SYSCALL_H
-#  include <sys/syscall.h>
-# endif
-#endif
-
-#include <libcitadel.h>
-
-#include "threads.h"
-#include "ctdl_module.h"
-#include "modules_init.h"
-#include "housekeeping.h"
-#include "config.h"
-#include "citserver.h"
-#include "sysdep_decls.h"
-#include "context.h"
-#include "event_client.h"
-
-
-int num_workers = 0;				/* Current number of worker threads */
-int active_workers = 0;				/* Number of ACTIVE worker threads */
-pthread_key_t ThreadKey;
-pthread_mutex_t Critters[MAX_SEMAPHORES];	/* Things needing locking */
-struct thread_tsd masterTSD;
-int server_shutting_down = 0;			/* set to nonzero during shutdown */
-
-
-
-void InitializeSemaphores(void)
-{
-	int i;
-
-	/* Set up a bunch of semaphores to be used for critical sections */
-	for (i=0; i<MAX_SEMAPHORES; ++i) {
-		pthread_mutex_init(&Critters[i], NULL);
-	}
-}
-
-
-
-
-/*
- * Obtain a semaphore lock to begin a critical section.
- * but only if no one else has one
- */
-int try_critical_section(int which_one)
-{
-	/* For all types of critical sections except those listed here,
-	 * ensure nobody ever tries to do a critical section within a
-	 * transaction; this could lead to deadlock.
-	 */
-	if (	(which_one != S_FLOORCACHE)
-		&& (which_one != S_RPLIST)
-	) {
-		cdb_check_handles();
-	}
-	return (pthread_mutex_trylock(&Critters[which_one]));
-}
-
-
-/*
- * Obtain a semaphore lock to begin a critical section.
- */
-void begin_critical_section(int which_one)
-{
-	/* For all types of critical sections except those listed here,
-	 * ensure nobody ever tries to do a critical section within a
-	 * transaction; this could lead to deadlock.
-	 */
-	if (	(which_one != S_FLOORCACHE)
-		&& (which_one != S_RPLIST)
-	) {
-		cdb_check_handles();
-	}
-	pthread_mutex_lock(&Critters[which_one]);
-}
-
-/*
- * Release a semaphore lock to end a critical section.
- */
-void end_critical_section(int which_one)
-{
-	pthread_mutex_unlock(&Critters[which_one]);
-}
-
-
-
-
-/*
- * Return a pointer to our thread-specific (not session-specific) data.
- */ 
-struct thread_tsd *MyThread(void) {
-        register struct thread_tsd *c;
-        return ((c = (struct thread_tsd *) pthread_getspecific(ThreadKey), c == NULL) ? &masterTSD : c);
-}
-
-
-
-/* 
- * Called by CtdlThreadCreate()
- * We have to pass through here before starting our thread in order to create a set of data
- * that is thread-specific rather than session-specific.
- */
-void *CTC_backend(void *supplied_start_routine)
-{
-	struct thread_tsd *mytsd;
-	void *(*start_routine)(void*) = supplied_start_routine;
-
-	mytsd = (struct thread_tsd *) malloc(sizeof(struct thread_tsd));
-	memset(mytsd, 0, sizeof(struct thread_tsd));
-	pthread_setspecific(ThreadKey, (const void *) mytsd);
-
-	start_routine(NULL);
-
-	free(mytsd);
-	return(NULL);
-}
-
- 
-/*
- * Function to create a thread.
- */ 
-void CtdlThreadCreate(void *(*start_routine)(void*))
-{
-	pthread_t thread;
-	pthread_attr_t attr;
-	int ret = 0;
-
-
-	ret = pthread_attr_init(&attr);
-	ret = pthread_attr_setstacksize(&attr, THREADSTACKSIZE);
-	ret = pthread_create(&thread, &attr, CTC_backend, (void *)start_routine);
-	if (ret != 0) syslog(LOG_EMERG, "pthread_create() : %s", strerror(errno));
-}
-
-
-void InitializeMasterTSD(void) {
-	memset(&masterTSD, 0, sizeof(struct thread_tsd));
-}
-
-extern void ShutDownEventQueues(void);
-
-int EventQShuttingDown = 0;
-int EVQShutDown = 0;
-/*
- * Initialize the thread system
- */
-void go_threading(void)
-{
-	if (pthread_key_create(&ThreadKey, NULL) != 0) {
-		syslog(LOG_EMERG, "pthread_key_create() : %s", strerror(errno));
-		abort();
-	}
-
-	/* Second call to module init functions now that threading is up */
-	initialise_modules(1);
-
-	/* Begin with one worker thread.  We will expand the pool if necessary */
-	CtdlThreadCreate(worker_thread);
-
-	/* The supervisor thread monitors worker threads and spawns more of them if it finds that
-	 * they are all in use.  FIXME make the 256 max threads a configurable value.
-	 */
-	while (!server_shutting_down) {
-		if ((active_workers == num_workers) && (num_workers < 256)) {
-			CtdlThreadCreate(worker_thread);
-		}
-		usleep(1000);
-	}
-
-	/* When we get to this point we are getting ready to shut down our Citadel server */
-	if (!EventQShuttingDown)
-	{
-		EventQShuttingDown = 1;
-		ShutDownEventQueues();
-	}
-	while (!EVQShutDown)
-		usleep(1000);
-
-
-	terminate_all_sessions();		/* close all client sockets */
-	CtdlShutdownServiceHooks();		/* close all listener sockets to prevent new connections */
-	PerformSessionHooks(EVT_SHUTDOWN);	/* run any registered shutdown hooks */
-
-	int countdown = 30;
-	while ( (num_workers > 0) && (countdown-- > 0)) {
-		syslog(LOG_DEBUG, "Waiting %d seconds for %d worker threads to exit",
-			countdown, num_workers
-		);
-		usleep(1000);
-	}
-}