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authorDavid Robillard <d@drobilla.net>2006-06-10 02:43:54 +0000
committerDavid Robillard <d@drobilla.net>2006-06-10 02:43:54 +0000
commit47246db7e9d71ba694b719001033fba1766a58c4 (patch)
tree25614ea4f2c92033a3cd37f6413df742f09a5369 /src/progs/gtk/GtkClientInterface.cpp
parent98fe0e7056e6697396249531785d3899f94d79be (diff)
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More juggling
git-svn-id: http://svn.drobilla.net/lad/grauph@16 a436a847-0d15-0410-975c-d299462d15a1
Diffstat (limited to 'src/progs/gtk/GtkClientInterface.cpp')
-rw-r--r--src/progs/gtk/GtkClientInterface.cpp81
1 files changed, 81 insertions, 0 deletions
diff --git a/src/progs/gtk/GtkClientInterface.cpp b/src/progs/gtk/GtkClientInterface.cpp
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+++ b/src/progs/gtk/GtkClientInterface.cpp
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+/* This file is part of Om. Copyright (C) 2006 Dave Robillard.
+ *
+ * Om is free 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 2 of the License, or (at your option) any later
+ * version.
+ *
+ * Om 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 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 "GtkClientInterface.h"
+#include <cstdio>
+#include <string>
+#include <sys/time.h>
+#include <time.h>
+#include <gtkmm.h>
+#include "ControlInterface.h"
+
+namespace OmGtk {
+
+
+GtkClientInterface::GtkClientInterface(ControlInterface* interface, int client_port)
+: OSCListener(client_port)
+, ModelClientInterface()
+, _interface(interface)
+, _num_plugins(0)
+, _events(4096)
+{
+}
+
+
+/** Push an event (from the engine, ie 'new patch') on to the queue.
+ */
+void
+GtkClientInterface::push_event(Closure ev)
+{
+ bool success = false;
+ bool first = true;
+
+ // (Very) slow busy-wait if the queue is full
+ // FIXME: Make this wait on a signal from process_events iff this happens
+ while (!success) {
+ success = _events.push(ev);
+ if (!success) {
+ if (first) {
+ cerr << "[GtkClientInterface] WARNING: (Client) event queue full. Waiting to try again..." << endl;
+ first = false;
+ }
+ usleep(200000); // 100 milliseconds (2* rate process_events is called)
+ }
+ }
+}
+
+
+/** Process all queued events that came from the OSC thread.
+ *
+ * This function is to be called from the Gtk thread only.
+ */
+bool
+GtkClientInterface::process_events()
+{
+ // Process a maximum of queue-size events, to prevent locking the GTK
+ // thread indefinitely while processing continually arriving events
+ size_t num_processed = 0;
+ while (!_events.is_empty() && num_processed++ < _events.capacity()/2) {
+ Closure& ev = _events.pop();
+ ev();
+ ev.disconnect();
+ }
+
+ return true;
+}
+
+
+} // namespace OmGtk