E SVN: lucas trunk/eina/src/lib

[Enlightenment S. <no-...@en...>]

Log:
eina_sched: fix rt priority drop
  
  Thanks to cedric for noticing this bug. Priority in userspace are in the
  opposite order as in kernel space.
  
  
  

Author:       lucas
Date:         2012-02-08 16:06:14 -0800 (Wed, 08 Feb 2012)
New Revision: 67776
Trac:         http://trac.enlightenment.org/e/changeset/67776

Modified:
  trunk/eina/src/lib/eina_sched.c 

Modified: trunk/eina/src/lib/eina_sched.c
===================================================================
--- trunk/eina/src/lib/eina_sched.c	2012-02-08 23:04:05 UTC (rev 67775)
+++ trunk/eina/src/lib/eina_sched.c	2012-02-09 00:06:14 UTC (rev 67776)
@@ -41,7 +41,7 @@
 #include "eina_sched.h"
 #include "eina_log.h"
 
-#define RTNICENESS 5
+#define RTNICENESS 1
 #define NICENESS 5
 
 EAPI void
@@ -62,11 +62,15 @@
 
    if (EINA_UNLIKELY(pol == SCHED_RR || pol == SCHED_FIFO))
      {
-        prio = sched_get_priority_max(pol);
-        param.sched_priority += RTNICENESS;
-        if (prio > 0 && param.sched_priority > prio)
-           param.sched_priority = prio;
+        param.sched_priority -= RTNICENESS;
 
+        /* We don't change the policy */
+        if (param.sched_priority < 1)
+          {
+             EINA_LOG_INFO("RT prio < 1, setting to 1 instead");
+             param.sched_priority = 1;
+          }
+
         pthread_setschedparam(pthread_id, pol, &param);
      }
 # ifdef __linux__
@@ -78,7 +82,10 @@
           {
              prio += NICENESS;
              if (prio > 19)
-                prio = 19;
+               {
+                  EINA_LOG_INFO("Max niceness reached; keeping max (19)");
+                  prio = 19;
+               }
 
              setpriority(PRIO_PROCESS, 0, prio);
           }