From dd7595a3475407a7fa96a97393bae8c5220e8762 Mon Sep 17 00:00:00 2001
From: David Walter Seikel
Date: Wed, 4 Jan 2012 18:41:13 +1000
Subject: Add the base Enlightenment Foundation Libraries - eina, eet, evas,
 ecore, embryo, and edje.

Note that embryo wont be used, but I'm not sure yet if you can build edje without it.
---
 libraries/eina/src/lib/eina_sched.c | 94 +++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 libraries/eina/src/lib/eina_sched.c

(limited to 'libraries/eina/src/lib/eina_sched.c')

diff --git a/libraries/eina/src/lib/eina_sched.c b/libraries/eina/src/lib/eina_sched.c
new file mode 100644
index 0000000..8c7f7fe
--- /dev/null
+++ b/libraries/eina/src/lib/eina_sched.c
@@ -0,0 +1,94 @@
+/* EINA - EFL data type library
+ * Copyright (C) 2010 ProFUSION embedded systems
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#ifdef EFL_HAVE_POSIX_THREADS
+# include <pthread.h>
+# ifdef __linux__
+#  include <sched.h>
+#  include <sys/time.h>
+#  include <sys/resource.h>
+#  include <errno.h>
+# endif
+#endif
+
+#ifdef EFL_HAVE_WIN32_THREADS
+# ifndef WIN32_LEAN_AND_MEAN
+#  define WIN32_LEAN_AND_MEAN
+# endif
+# include <windows.h>
+# undef WIN32_LEAN_AND_MEAN
+#endif
+
+#include "eina_sched.h"
+#include "eina_log.h"
+
+#define RTNICENESS 5
+#define NICENESS 5
+
+EAPI void
+eina_sched_prio_drop(void)
+{
+#ifdef EFL_HAVE_POSIX_THREADS
+   struct sched_param param;
+   int pol, prio, ret;
+   pthread_t pthread_id;
+
+   pthread_id = pthread_self();
+   ret = pthread_getschedparam(pthread_id, &pol, &param);
+   if (ret)
+     {
+        EINA_LOG_ERR("Unable to query sched parameters");
+        return;
+     }
+
+   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;
+
+        pthread_setschedparam(pthread_id, pol, &param);
+     }
+# ifdef __linux__
+   else
+     {
+        errno = 0;
+        prio = getpriority(PRIO_PROCESS, 0);
+        if (errno == 0)
+          {
+             prio += NICENESS;
+             if (prio > 19)
+                prio = 19;
+
+             setpriority(PRIO_PROCESS, 0, prio);
+          }
+     }
+# endif
+#elif defined EFL_HAVE_WIN32_THREADS
+   if (!SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_BELOW_NORMAL))
+     EINA_LOG_ERR("Can not set thread priority");
+#else
+   EINA_LOG_ERR("Eina does not have support for threads enabled"
+                "or it doesn't support setting scheduler priorities");
+#endif
+}
-- 
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