midi_server: Converted to BServer, launched on demand.

data/launch/system

@@ -40,7 +40,7 @@ service x-vnd.Haiku-media_server {
 service x-vnd.Haiku-midi_server {
 	launch /system/servers/midi_server
 	no_safemode
-	legacy
+	on_demand
 }
 
 service x-vnd.Haiku-mail_daemon {

src/servers/midi/Jamfile

@@ -2,7 +2,7 @@ SubDir HAIKU_TOP src servers midi ;
 
 SetSubDirSupportedPlatformsBeOSCompatible ;
 
-UsePrivateHeaders midi shared storage ;
+UsePrivateHeaders app midi shared storage ;
 
 Server midi_server :
 	MidiServerApp.cpp

src/servers/midi/MidiServerApp.cpp

@@ -1,3 +1,11 @@
+/*
+ * Copyright 2002-2015, Haiku, Inc. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		Matthijs Hollemans
+ */
+
 /*
  * Copyright (c) 2002-2004 Matthijs Hollemans
  *
@@ -36,9 +44,9 @@
 using std::nothrow;
 
 
-MidiServerApp::MidiServerApp()
+MidiServerApp::MidiServerApp(status_t& error)
 	:
-	BApplication(MIDI_SERVER_SIGNATURE)
+	BServer(MIDI_SERVER_SIGNATURE, true, &error)
 {
 	TRACE(("Running Haiku MIDI server"))
 
@@ -816,7 +824,11 @@ MidiServerApp::_DumpEndpoints()
 int
 main()
 {
-	MidiServerApp app;
-	app.Run();
-	return 0;
+	status_t status;
+	MidiServerApp app(status);
+
+	if (status == B_OK)
+		app.Run();
+
+	return status == B_OK ? EXIT_SUCCESS : EXIT_FAILURE;
 }

src/servers/midi/MidiServerApp.h

@@ -9,7 +9,7 @@
 #define MIDI_SERVER_APP_H
 
 
-#include <Application.h>
+#include <Server.h>
 #include <List.h>
 
 #include "DeviceWatcher.h"
@@ -24,16 +24,16 @@ struct endpoint_t;
 	incoming messages from libmidi2.so, and notifies the apps
 	when something interesting happens.
 */
-class MidiServerApp : public BApplication {
+class MidiServerApp : public BServer {
 public:
-								MidiServerApp();
+								MidiServerApp(status_t& error);
 	virtual						~MidiServerApp();
 
 	virtual	void				AboutRequested();
 	virtual	void				MessageReceived(BMessage* msg);
 
 private:
-	typedef BApplication super;
+	typedef BServer super;
 
 			void				_OnRegisterApp(BMessage* msg);
 			void				_OnCreateEndpoint(BMessage* msg);