|
|
@@ -0,0 +1,129 @@
|
|
|
+/*
|
|
|
+ * Copyright (c) 2009 Red Hat, Inc.
|
|
|
+ *
|
|
|
+ * All rights reserved.
|
|
|
+ *
|
|
|
+ * Author: Steven Dake (sdake@redhat.com)
|
|
|
+ *
|
|
|
+ * This software licensed under BSD license, the text of which follows:
|
|
|
+ *
|
|
|
+ * 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 MontaVista Software, Inc. 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 CONTIBUTORS "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 OWNER 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.
|
|
|
+ */
|
|
|
+
|
|
|
+#include <corosync/totem/totempg.h>
|
|
|
+#include <corosync/hdb.h>
|
|
|
+#include "schedwrk.h"
|
|
|
+
|
|
|
+static void (*serialize_lock) (void);
|
|
|
+static void (*serialize_unlock) (void);
|
|
|
+
|
|
|
+DECLARE_HDB_DATABASE (schedwrk_instance_database);
|
|
|
+
|
|
|
+struct schedwrk_instance {
|
|
|
+ int (*schedwrk_fn) (const void *);
|
|
|
+ const void *context;
|
|
|
+ void *callback_handle;
|
|
|
+};
|
|
|
+
|
|
|
+static int schedwrk_do (enum totem_callback_token_type type, const void *context)
|
|
|
+{
|
|
|
+ hdb_handle_t handle = (hdb_handle_t)(unsigned int)context;
|
|
|
+ struct schedwrk_instance *instance;
|
|
|
+ int res;
|
|
|
+
|
|
|
+ res = hdb_handle_get (&schedwrk_instance_database,
|
|
|
+ hdb_nocheck_convert (handle),
|
|
|
+ (void *)&instance);
|
|
|
+ if (res != 0) {
|
|
|
+ goto error_exit;
|
|
|
+ }
|
|
|
+
|
|
|
+ serialize_lock ();
|
|
|
+ res = instance->schedwrk_fn (instance->context);
|
|
|
+ serialize_unlock ();
|
|
|
+
|
|
|
+ if (res == 0) {
|
|
|
+ hdb_handle_destroy (&schedwrk_instance_database, hdb_nocheck_convert (handle));
|
|
|
+ }
|
|
|
+ hdb_handle_put (&schedwrk_instance_database,
|
|
|
+ hdb_nocheck_convert (handle));
|
|
|
+ return (res);
|
|
|
+
|
|
|
+error_exit:
|
|
|
+ return (-1);
|
|
|
+}
|
|
|
+
|
|
|
+void schedwrk_init (
|
|
|
+ void (*serialize_lock_fn) (void),
|
|
|
+ void (*serialize_unlock_fn) (void))
|
|
|
+{
|
|
|
+ serialize_lock = serialize_lock_fn;
|
|
|
+ serialize_unlock = serialize_unlock_fn;
|
|
|
+}
|
|
|
+
|
|
|
+int schedwrk_create (
|
|
|
+ hdb_handle_t *handle,
|
|
|
+ int (schedwrk_fn) (const void *),
|
|
|
+ const void *context)
|
|
|
+{
|
|
|
+ struct schedwrk_instance *instance;
|
|
|
+ int res;
|
|
|
+
|
|
|
+ res = hdb_handle_create (&schedwrk_instance_database,
|
|
|
+ sizeof (struct schedwrk_instance), handle);
|
|
|
+ if (res != 0) {
|
|
|
+ goto error_exit;
|
|
|
+ }
|
|
|
+ res = hdb_handle_get (&schedwrk_instance_database, *handle,
|
|
|
+ (void *)&instance);
|
|
|
+ if (res != 0) {
|
|
|
+ goto error_destroy;
|
|
|
+ }
|
|
|
+
|
|
|
+ totempg_callback_token_create (
|
|
|
+ &instance->callback_handle,
|
|
|
+ TOTEM_CALLBACK_TOKEN_SENT,
|
|
|
+ 1,
|
|
|
+ schedwrk_do,
|
|
|
+ (void *)(unsigned int)*handle);
|
|
|
+
|
|
|
+ instance->schedwrk_fn = schedwrk_fn;
|
|
|
+ instance->context = context;
|
|
|
+
|
|
|
+ hdb_handle_put (&schedwrk_instance_database, *handle);
|
|
|
+
|
|
|
+ return (0);
|
|
|
+
|
|
|
+error_destroy:
|
|
|
+ hdb_handle_destroy (&schedwrk_instance_database, *handle);
|
|
|
+
|
|
|
+error_exit:
|
|
|
+ return (-1);
|
|
|
+}
|
|
|
+
|
|
|
+void schedwrk_destroy (hdb_handle_t handle)
|
|
|
+{
|
|
|
+ hdb_handle_destroy (&schedwrk_instance_database, handle);
|
|
|
+}
|
Steven Dake