summaryrefslogtreecommitdiffstats
path: root/src/kiro-sb.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/kiro-sb.c')
-rw-r--r--src/kiro-sb.c243
1 files changed, 243 insertions, 0 deletions
diff --git a/src/kiro-sb.c b/src/kiro-sb.c
new file mode 100644
index 0000000..10a36b0
--- /dev/null
+++ b/src/kiro-sb.c
@@ -0,0 +1,243 @@
+/* Copyright (C) 2014-2015 Timo Dritschler <timo.dritschler@kit.edu>
+ (Karlsruhe Institute of Technology)
+
+ This library is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by the
+ Free Software Foundation; either version 2.1 of the License, or (at your
+ option) any later version.
+
+ This library 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 Lesser General Public License for more
+ details.
+
+ You should have received a copy of the GNU Lesser General Public License along
+ with this library; if not, write to the Free Software Foundation, Inc., 51
+ Franklin St, Fifth Floor, Boston, MA 02110, USA
+*/
+
+/**
+ * SECTION: kiro-sb
+ * @Short_description: KIRO 'Synchronizing Buffer'
+ * @Title: KiroSb
+ *
+ * KiroSb implements a 'Synchronizing Buffer' that automatically keeps the local
+ * memory content up to date by mirroring the remote SyncBuffers memory content
+ * automatically without any required user interaction
+ */
+
+#include <stdio.h>
+
+#include <stdlib.h>
+#include <string.h>
+#include <glib.h>
+#include "kiro-sb.h"
+#include "kiro-trb.h"
+#include "kiro-server.h"
+#include "kiro-client.h"
+
+
+/*
+ * Definition of 'private' structures and members and macro to access them
+ */
+
+#define KIRO_SB_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE((obj), KIRO_TYPE_SB, KiroSbPrivate))
+
+struct _KiroSbPrivate {
+
+ /* Properties */
+ // PLACEHOLDER //
+
+ /* 'Real' private structures */
+ /* (Not accessible by properties) */
+ int initialized; // 0 if uninitialized, 1 if server, 2 if client
+ KiroServer* server; // KIRO Server component to serve
+ KiroClient* client; // KIRO Client component to clone
+ KiroTrb* trb; // KIRO Ring Buffer to hold and exchange data
+
+ GThread *main_thread; // Main thread for the main_loop
+ GMainLoop *main_loop; // main_loop *duh*
+ guint close_signal; // Used to signal shutdown of the main_loop
+};
+
+
+G_DEFINE_TYPE (KiroSb, kiro_sb, G_TYPE_OBJECT);
+
+
+KiroSb *
+kiro_sb_new (void)
+{
+ return g_object_new (KIRO_TYPE_SB, NULL);
+}
+
+
+void
+kiro_sb_free (KiroSb *sb)
+{
+ g_return_if_fail (sb != NULL);
+ if (KIRO_IS_SB (sb))
+ g_object_unref (sb);
+ else
+ g_warning ("Trying to use kiro_sb_free on an object which is not a KIRO SB. Ignoring...");
+}
+
+
+static void
+kiro_sb_init (KiroSb *self)
+{
+ g_return_if_fail (self != NULL);
+ KiroSbPrivate *priv = KIRO_SB_GET_PRIVATE (self);
+ priv->initialized = 0;
+ priv->trb = NULL;
+ priv->server = NULL;
+ priv->client = NULL;
+}
+
+
+static void
+kiro_sb_finalize (GObject *object)
+{
+ g_return_if_fail (object != NULL);
+ KiroSb *self = KIRO_SB (object);
+ KiroSbPrivate *priv = KIRO_SB_GET_PRIVATE (self);
+
+ if (priv->trb) {
+ kiro_trb_purge (priv->trb, FALSE);
+ kiro_trb_free (priv->trb);
+ }
+
+ if (priv->server)
+ kiro_server_free (priv->server);
+
+ if (priv->client)
+ kiro_client_free (priv->client);
+
+ priv->trb = NULL;
+ priv->server = NULL;
+ priv->client = NULL;
+
+ G_OBJECT_CLASS (kiro_sb_parent_class)->finalize (object);
+}
+
+
+static void
+kiro_sb_class_init (KiroSbClass *klass)
+{
+ g_return_if_fail (klass != NULL);
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+ gobject_class->finalize = kiro_sb_finalize;
+ g_type_class_add_private (klass, sizeof (KiroSbPrivate));
+}
+
+
+gpointer
+start_main_loop (GMainLoop *loop)
+{
+ g_main_loop_run (loop);
+ /* wait for mai loop to finish*/
+ g_main_loop_unref (loop);
+ return NULL;
+}
+
+
+gboolean
+idle_func (KiroSbPrivate *priv)
+{
+ if (priv->close_signal) {
+ g_main_loop_quit (priv->main_loop);
+ /*main_thread will do the unref upon exit*/
+ priv->main_loop = NULL;
+ g_debug ("Main loop quit");
+ return G_SOURCE_REMOVE;
+ }
+
+ struct KiroTrbInfo *header = (struct KiroTrbInfo *)kiro_trb_get_raw_buffer (priv->trb);
+ gulong old_offset = header->offset;
+ kiro_client_sync_partial (priv->client, 0, sizeof(struct KiroTrbInfo), 0);
+ kiro_trb_refresh (priv->trb);
+ if (old_offset != header->offset) {
+ g_debug ("Fetching new element");
+ gulong offset = (gulong) (kiro_trb_get_element (priv->trb, -1) - kiro_trb_get_raw_buffer (priv->trb));
+ kiro_client_sync_partial (priv->client, offset, kiro_trb_get_element_size (priv->trb), offset);
+ /*INVOKE callback*/
+ }
+
+ return G_SOURCE_CONTINUE;
+}
+
+
+gboolean
+kiro_sb_serve (KiroSb *self, gulong size)
+{
+ g_return_val_if_fail (self != NULL, FALSE);
+
+ KiroSbPrivate *priv = KIRO_SB_GET_PRIVATE (self);
+ g_return_val_if_fail (priv->initialized == 0, FALSE);
+
+ g_return_val_if_fail ((priv->trb = kiro_trb_new ()), FALSE);
+
+ if (0 > kiro_trb_reshape (priv->trb, size, 3)) {
+ g_debug ("Failed to create KIRO ring buffer");
+ kiro_trb_free (priv->trb);
+ return FALSE;
+ }
+
+ void *buff = kiro_trb_get_raw_buffer (priv->trb);
+ gulong b_size = kiro_trb_get_raw_size (priv->trb);
+
+ priv->server = kiro_server_new ();
+ if (0 > kiro_server_start (priv->server, NULL, "60010", buff, b_size)) {
+ g_debug ("Failed to start KIRO Server");
+ kiro_server_free (priv->server);
+ kiro_trb_free (priv->trb);
+ return FALSE;
+ }
+
+ priv->initialized = 1;
+ g_message ("SyncBuffer ready");
+
+ return TRUE;
+}
+
+
+gboolean
+kiro_sb_clone (KiroSb *self, const gchar* address, const gchar* port)
+{
+ g_return_val_if_fail (self != NULL, FALSE);
+
+ KiroSbPrivate *priv = KIRO_SB_GET_PRIVATE (self);
+ g_return_val_if_fail (priv->initialized == 0, FALSE);
+
+ g_return_val_if_fail ((priv->trb = kiro_trb_new ()), FALSE);
+
+ priv->client = kiro_client_new ();
+ if (0 > kiro_client_connect (priv->client, address, port)) {
+ g_debug ("Failed to connect to remote Sync Buffer");
+ kiro_trb_free (priv->trb);
+ kiro_client_free (priv->client);
+ return FALSE;
+ }
+
+ kiro_client_sync (priv->client);
+ kiro_trb_adopt (priv->trb, kiro_client_get_memory (priv->client));
+
+ priv->main_loop = g_main_loop_new (NULL, FALSE);
+ g_idle_add ((GSourceFunc)idle_func, priv);
+ priv->main_thread = g_thread_new ("KIRO SB Main Loop", (GThreadFunc)start_main_loop, priv->main_loop);
+
+ return TRUE;
+}
+
+
+gulong
+kiro_sb_get_size (KiroSb *self)
+{
+ g_return_val_if_fail (self != NULL, 0);
+
+ KiroSbPrivate *priv = KIRO_SB_GET_PRIVATE (self);
+ g_return_val_if_fail (priv->initialized != 0, 0);
+
+ return kiro_trb_get_element_size (priv->trb);
+}
+/* Privat functions */
+
generated by cgit v1.2.1 (git 2.18.0) at 2024-05-21 05:30:36 +0000