[PVFS2-CVS] commit by neill in pvfs2/src/common/misc: server-config-mgr.c server-config-mgr.h

[CVS commit program]

Update of /projects/cvsroot/pvfs2/src/common/misc
In directory parlweb:/tmp/cvs-serv2768/src/common/misc

Modified Files:
	server-config-mgr.c server-config-mgr.h 
Log Message:
- add a method that can return the absolute minimum handle recycle time
  (in seconds) across all filesystems and configured servers


Index: server-config-mgr.c
===================================================================
RCS file: /projects/cvsroot/pvfs2/src/common/misc/server-config-mgr.c,v
diff -p -u -r1.8 -r1.9
--- server-config-mgr.c	22 Jul 2004 16:21:41 -0000	1.8
+++ server-config-mgr.c	27 Jul 2004 21:26:23 -0000	1.9
@@ -37,6 +37,13 @@ typedef struct
 
 static struct qhash_table *s_fsid_to_config_table = NULL;
 static gen_mutex_t *s_server_config_mgr_mutex = NULL;
+/*
+  while loading configuration settings for all known file systems
+  (across all configured servers), we keep track of the minimum handle
+  recycle timeout for *any* file system, and expose this value since
+  this is the only place that has access to all of this information.
+*/
+static int s_min_handle_recycle_timeout_in_sec = -1;
 
 static int hash_fsid(void *key, int table_size);
 static int hash_fsid_compare(void *key, struct qlist_head *link);
@@ -70,6 +77,7 @@ int PINT_server_config_mgr_initialize(vo
             s_server_config_mgr_mutex = gen_mutex_build();
             if (s_server_config_mgr_mutex)
             {
+                s_min_handle_recycle_timeout_in_sec = -1;
                 ret = 0;
             }
             else
@@ -122,6 +130,7 @@ int PINT_server_config_mgr_finalize(void
         gen_mutex_unlock(s_server_config_mgr_mutex);
         gen_mutex_destroy(s_server_config_mgr_mutex);
         s_server_config_mgr_mutex = NULL;
+        s_min_handle_recycle_timeout_in_sec = -1;
 
         ret = 0;
     }
@@ -169,6 +178,20 @@ int PINT_server_config_mgr_reload_cached
 
                 cur_fs = PINT_llist_head(cur);
                 assert(cur_fs);
+                assert(cur_fs->handle_recycle_timeout_sec.tv_sec > -1);
+
+                /* find the minimum handle recycle timeout here */
+                if ((cur_fs->handle_recycle_timeout_sec.tv_sec <
+                     s_min_handle_recycle_timeout_in_sec) ||
+                    (s_min_handle_recycle_timeout_in_sec == -1))
+                {
+                    s_min_handle_recycle_timeout_in_sec =
+                        cur_fs->handle_recycle_timeout_sec.tv_sec;
+
+                    gossip_debug(GOSSIP_CLIENT_DEBUG, "Set min handle "
+                                 "recycle time to %d seconds\n",
+                                 s_min_handle_recycle_timeout_in_sec);
+                }
 
                 gossip_debug(GOSSIP_CLIENT_DEBUG,
                              "Reloading handle mappings for fs_id %d\n",
@@ -380,6 +403,12 @@ void __PINT_server_config_mgr_put_config
         }
         gen_mutex_unlock(s_server_config_mgr_mutex);
     }
+}
+
+int PINT_server_config_mgr_get_abs_min_handle_recycle_time(void)
+{
+    assert(s_min_handle_recycle_timeout_in_sec != -1);
+    return s_min_handle_recycle_timeout_in_sec;
 }
 
 static int hash_fsid(void *key, int table_size)

Index: server-config-mgr.h
===================================================================
RCS file: /projects/cvsroot/pvfs2/src/common/misc/server-config-mgr.h,v
diff -p -u -r1.3 -r1.4
--- server-config-mgr.h	22 Jul 2004 16:21:41 -0000	1.3
+++ server-config-mgr.h	27 Jul 2004 21:26:23 -0000	1.4
@@ -28,6 +28,8 @@ struct server_configuration_s *__PINT_se
 void __PINT_server_config_mgr_put_config(
     struct server_configuration_s *config_s);
 
+int PINT_server_config_mgr_get_abs_min_handle_recycle_time(void);
+
 /* client and server retrieve fs configuration from different sources */
 #if defined(__PVFS2_CLIENT__)
 #define PINT_server_config_mgr_get_config __PINT_server_config_mgr_get_config