[seq24-users] Fwd: [Seq24-devel] [PATCH] adjustable realtime priority

[Florian S. <mis...@gm...>]

Ah well, since noone answered on seq24-devel, i'll post this here, too. Maybe 
someone has a need for it..

Flo

----------------------------
A patch (also attached) to make the RT prio adjustable (if you use other RT 
software like jack, you want seq24's midi timing thread to be higher prio 
than jackd's process cycle).

Also in such a setup a non root user can usually make processes run SCHED_FIFO 
thus, 
the help output was adjusted to reflect that.

Regards,
Flo

diff -Nru /tmp/seq24-0.8.7/src/globals.h seq24-0.8.7/src/globals.h
--- /tmp/seq24-0.8.7/src/globals.h	2006-05-30 15:42:18.000000000 +0200
+++ seq24-0.8.7/src/globals.h	2007-01-27 02:42:49.000000000 +0100
@@ -159,7 +159,7 @@
 const int c_perf_scale_x = 32; /*ticks per pixel */
 
 extern bool global_showmidi;
-extern bool global_priority;
+extern int  global_priority;
 extern bool global_stats;
 extern bool global_pass_sysex;
 extern bool global_with_jack_transport;
diff -Nru /tmp/seq24-0.8.7/src/perform.cpp seq24-0.8.7/src/perform.cpp
--- /tmp/seq24-0.8.7/src/perform.cpp	2006-08-13 22:42:38.000000000 +0200
+++ seq24-0.8.7/src/perform.cpp	2007-01-27 02:45:51.000000000 +0100
@@ -1006,7 +1006,7 @@
     if ( global_priority ){
 		
 		memset(schp, 0, sizeof(sched_param));
-		schp->sched_priority = 1;
+		schp->sched_priority = global_priority;
 		
 		if (sched_setscheduler(0, SCHED_FIFO, schp) != 0) 	{
 			
@@ -1564,7 +1564,7 @@
     if ( global_priority ){
         
         memset(schp, 0, sizeof(sched_param));
-        schp->sched_priority = 1;
+        schp->sched_priority = global_priority;
         
         if (sched_setscheduler(0, SCHED_FIFO, schp) != 0) 	{
             
Binary files /tmp/seq24-0.8.7/src/.perform.cpp.swp and 
seq24-0.8.7/src/.perform.cpp.swp differ
diff -Nru /tmp/seq24-0.8.7/src/seq24.cpp seq24-0.8.7/src/seq24.cpp
--- /tmp/seq24-0.8.7/src/seq24.cpp	2006-05-30 15:42:45.000000000 +0200
+++ seq24-0.8.7/src/seq24.cpp	2007-01-27 02:47:50.000000000 +0100
@@ -38,7 +38,7 @@
     {"help",     0, 0, 'h'},
     {"showmidi",     0, 0, 's'},
     {"stats",     0, 0, 'S' },
-    {"priority", 0, 0, 'p' },
+    {"priority", required_argument, 0, 'p' },
     {"ignore",required_argument, 0, 'i'},
     {"jack_transport",0, 0, 'j'},
     {"jack_master",0, 0, 'J'},
@@ -53,7 +53,7 @@
 
 bool global_manual_alsa_ports = false;
 bool global_showmidi = false;
-bool global_priority = false;
+int  global_priority = 0;
 bool global_device_ignore = false;
 int global_device_ignore_num = 0;
 bool global_stats = false;
@@ -160,7 +160,7 @@
                 printf( "    --file <filename> : load midi file on 
startup\n" );
                 printf( "    --manual_alsa_ports : seq24 won't attach alsa 
ports\n" );
                 printf( "    --showmidi : dumps incoming midi to screen\n" );
-                printf( "    --priority : runs higher priority with FIFO 
scheduler (must be root)\n" );
+                printf( "    --priority <priority>: runs higher priority with 
FIFO scheduler\n" );
                 printf( "    --pass_sysex : passes any incoming sysex 
messages to all outputs \n" );
                 printf( "    --show_keys : prints pressed key value\n" );
                 printf( "    --jack_transport : seq24 will sync to jack 
transport\n" );
@@ -187,7 +187,7 @@
                 
             case 'p':
                 
-                global_priority = true;
+                global_priority = atoi ( optarg );
                 
                 break;
                 


-- 
Palimm Palimm!
http://tapas.affenbande.org

-- 
Palimm Palimm!
http://tapas.affenbande.org