Add timeout facility for event contexts

[citadel.git] / citadel / threads.c

diff --git a/citadel/threads.c b/citadel/threads.c
index fc960da18e01d6c80b17b8902878f98f8621fd57..5cb70334c0b9fc13703045236de963ac55c899de 100644 (file)
--- a/citadel/threads.c
+++ b/citadel/threads.c
@@ -1,65 +1,27 @@
 /*
  * Thread handling stuff for Citadel server
  *
- * Copyright (c) 1987-2011 by the citadel.org team
+ * Copyright (c) 1987-2015 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.
+ * it under the terms of the GNU General Public License, version 3.
  *
  * 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 <stdio.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 "serv_extensions.h"
+#include "ctdl_module.h"
 #include "config.h"
-#include "citserver.h"
-#include "sysdep_decls.h"
 #include "context.h"
-#include "event_client.h"
+#include "threads.h"
 
 
 int num_workers = 0;                           /* Current number of worker threads */
@@ -69,6 +31,7 @@ pthread_mutex_t Critters[MAX_SEMAPHORES];     /* Things needing locking */
 struct thread_tsd masterTSD;
 int server_shutting_down = 0;                  /* set to nonzero during shutdown */
 
+pthread_mutex_t ThreadCountMutex;;
 
 
 void InitializeSemaphores(void)
@@ -157,6 +120,7 @@ void *CTC_backend(void *supplied_start_routine)
 
        start_routine(NULL);
 
+//     free(mytsd);
        return(NULL);
 }
 
@@ -182,7 +146,10 @@ void InitializeMasterTSD(void) {
        memset(&masterTSD, 0, sizeof(struct thread_tsd));
 }
 
+extern void ShutDownEventQueues(void);
 
+int EventQShuttingDown = 0;
+int EVQShutDown = 0;
 /*
  * Initialize the thread system
  */
@@ -193,6 +160,8 @@ void go_threading(void)
                abort();
        }
 
+       pthread_mutex_init(&ThreadCountMutex, NULL);
+
        /* Second call to module init functions now that threading is up */
        initialise_modules(1);
 
@@ -200,16 +169,24 @@ void go_threading(void)
        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.
+        * they are all in use.
         */
        while (!server_shutting_down) {
-               if ((active_workers == num_workers) && (num_workers < 256)) {
+               if ((active_workers == num_workers) && (num_workers < CtdlGetConfigInt("c_max_workers"))) {
                        CtdlThreadCreate(worker_thread);
                }
-               sleep(1);
+               usleep(1000000);
        }
 
        /* When we get to this point we are getting ready to shut down our Citadel server */
+       if (!EventQShuttingDown)
+       {
+               EventQShuttingDown = 1;
+               ShutDownEventQueues();
+       }
+       while (!EVQShutDown)
+               usleep(1000000);
+
 
        terminate_all_sessions();               /* close all client sockets */
        CtdlShutdownServiceHooks();             /* close all listener sockets to prevent new connections */
@@ -220,6 +197,6 @@ void go_threading(void)
                syslog(LOG_DEBUG, "Waiting %d seconds for %d worker threads to exit",
                        countdown, num_workers
                );
-               sleep(1);
+               usleep(1000000);
        }
 }