[Pvfs2-cvs] commit by pcarns in pvfs2-1/src/common/misc: pint-cached-config.c pint-cached-config.h

[CVS commit program]

Update of /projects/cvsroot/pvfs2-1/src/common/misc
In directory parlweb1:/tmp/cvs-serv14014/src/common/misc

Modified Files:
      Tag: small-file-branch
	pint-cached-config.c pint-cached-config.h 
Log Message:
Start an api for keeping up with the precreate pools.  For now all it does
is find the pools on startup or create them if they don't exist.  All
of the API functions are static in pvfs2-server.c for the moment.  Running
with the assumption we will track allocated handles as keyvals.


Index: pint-cached-config.c
===================================================================
RCS file: /projects/cvsroot/pvfs2-1/src/common/misc/pint-cached-config.c,v
diff -p -u -r1.22 -r1.22.2.1
--- pint-cached-config.c	5 Dec 2007 21:09:47 -0000	1.22
+++ pint-cached-config.c	29 Jan 2008 20:33:14 -0000	1.22.2.1
@@ -299,6 +299,68 @@ int PINT_handle_load_mapping(
     return ret;
 }
 
+/* PINT_cached_config_get_meta()
+ *
+ * Find the extent array for a specified meta server.
+ * This array MUST NOT be freed by the caller, nor cached for
+ * later use.
+ *
+ * returns 0 on success, -errno on failure
+ */
+int PINT_cached_config_get_meta(
+    struct server_configuration_s *config,
+    PVFS_fs_id fsid,
+    const char* host,
+    PVFS_handle_extent_array *ext_array)
+{
+    struct host_handle_mapping_s *cur_mapping = NULL;
+    struct qlist_head *hash_link = NULL;
+    struct config_fs_cache_s *cur_config_cache = NULL;
+    PINT_llist* server_cursor;
+
+    if (!config || !ext_array)
+    {
+        return(-PVFS_EINVAL);
+    }
+
+    hash_link = qhash_search(PINT_fsid_config_cache_table,&(fsid));
+    if (!hash_link)
+    {
+        return(-PVFS_EINVAL);
+    }
+
+    cur_config_cache = qlist_entry(
+       hash_link, struct config_fs_cache_s, hash_link);
+
+    assert(cur_config_cache);
+    assert(cur_config_cache->fs);
+    assert(cur_config_cache->meta_server_cursor);
+
+    server_cursor = 
+        cur_config_cache->fs->meta_handle_ranges;
+    cur_mapping = PINT_llist_head(server_cursor);
+
+    while(cur_mapping && strcmp(cur_mapping->alias_mapping->bmi_address, host))
+    {
+        server_cursor = PINT_llist_next(server_cursor);
+        cur_mapping = PINT_llist_head(server_cursor);
+    }
+
+    /* didn't find the server */
+    if(!cur_mapping)
+    {
+        return(-PVFS_EINVAL);
+    }
+
+    ext_array->extent_count =
+        cur_mapping->handle_extent_array.extent_count;
+    ext_array->extent_array =
+        cur_mapping->handle_extent_array.extent_array;
+
+    return(0);
+}
+
+
 /* PINT_cached_config_get_next_meta()
  *
  * returns the bmi address of a random server that should be used to

Index: pint-cached-config.h
===================================================================
RCS file: /projects/cvsroot/pvfs2-1/src/common/misc/pint-cached-config.h,v
diff -p -u -r1.11 -r1.11.2.1
--- pint-cached-config.h	5 Dec 2007 21:09:48 -0000	1.11
+++ pint-cached-config.h	29 Jan 2008 20:33:14 -0000	1.11.2.1
@@ -37,6 +37,12 @@ int PINT_cached_config_map_alias(
     const char *alias,
     PVFS_BMI_addr_t *addr);
 
+int PINT_cached_config_get_meta(
+    struct server_configuration_s *config,
+    PVFS_fs_id fsid,
+    const char* host,
+    PVFS_handle_extent_array *ext_array);
+
 int PINT_cached_config_get_next_meta(
     struct server_configuration_s *config,
     PVFS_fs_id fsid,