--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/druntime/import/core/sys/posix/sched.d	Tue Jun 02 17:43:06 2009 +0100
@@ -0,0 +1,137 @@
+/**
+ * D header file for POSIX.
+ *
+ * Copyright: Copyright Sean Kelly 2005 - 2009.
+ * License:   <a href="http://www.boost.org/LICENSE_1_0.txt>Boost License 1.0</a>.
+ * Authors:   Sean Kelly
+ * Standards: The Open Group Base Specifications Issue 6, IEEE Std 1003.1, 2004 Edition
+ *
+ *          Copyright Sean Kelly 2005 - 2009.
+ * Distributed under the Boost Software License, Version 1.0.
+ *    (See accompanying file LICENSE_1_0.txt or copy at
+ *          http://www.boost.org/LICENSE_1_0.txt)
+ */
+module core.sys.posix.sched;
+
+private import core.sys.posix.config;
+public import core.sys.posix.time;
+public import core.sys.posix.sys.types;
+
+extern (C):
+
+//
+// Required
+//
+/*
+struct sched_param
+{
+    int sched_priority (THR)
+    int sched_ss_low_priority (SS|TSP)
+    struct timespec sched_ss_repl_period (SS|TSP)
+    struct timespec sched_ss_init_budget (SS|TSP)
+    int sched_ss_max_repl (SS|TSP)
+}
+
+SCHED_FIFO
+SCHED_RR
+SCHED_SPORADIC (SS|TSP)
+SCHED_OTHER
+
+int sched_getparam(pid_t, sched_param*);
+int sched_getscheduler(pid_t);
+int sched_setparam(pid_t, in sched_param*);
+int sched_setscheduler(pid_t, int, in sched_param*);
+*/
+
+version( linux )
+{
+    struct sched_param
+    {
+        int sched_priority;
+    }
+
+    enum SCHED_OTHER    = 0;
+    enum SCHED_FIFO     = 1;
+    enum SCHED_RR       = 2;
+    //SCHED_SPORADIC (SS|TSP)
+}
+else version( OSX )
+{
+    enum SCHED_OTHER    = 1;
+    enum SCHED_FIFO     = 4;
+    enum SCHED_RR       = 2;
+    //SCHED_SPORADIC (SS|TSP)
+
+    private enum __SCHED_PARAM_SIZE__ = 4;
+
+    struct sched_param
+    {
+        int                             sched_priority;
+        byte[__PTHREAD_MUTEX_SIZE__]    __opaque;
+    }
+}
+else version( freebsd )
+{
+    struct sched_param
+    {
+        int sched_priority;
+    }
+
+    enum SCHED_FIFO     = 1;
+    enum SCHED_OTHER    = 2;
+    enum SCHED_RR       = 3;
+    //SCHED_SPORADIC (SS|TSP)
+}
+
+int sched_getparam(pid_t, sched_param*);
+int sched_getscheduler(pid_t);
+int sched_setparam(pid_t, in sched_param*);
+int sched_setscheduler(pid_t, int, in sched_param*);
+
+//
+// Thread (THR)
+//
+/*
+int sched_yield();
+*/
+
+version( linux )
+{
+    int sched_yield();
+}
+else version( OSX )
+{
+    int sched_yield();
+}
+else version( freebsd )
+{
+    int sched_yield();
+}
+
+//
+// Scheduling (TPS)
+//
+/*
+int sched_get_priority_max(int);
+int sched_get_priority_min(int);
+int sched_rr_get_interval(pid_t, timespec*);
+*/
+
+version( linux )
+{
+    int sched_get_priority_max(int);
+    int sched_get_priority_min(int);
+    int sched_rr_get_interval(pid_t, timespec*);
+}
+else version( OSX )
+{
+    int sched_get_priority_min(int);
+    int sched_get_priority_max(int);
+    //int sched_rr_get_interval(pid_t, timespec*); // FIXME: unavailable?
+}
+else version( freebsd )
+{
+    int sched_get_priority_min(int);
+    int sched_get_priority_max(int);
+    int sched_rr_get_interval(pid_t, timespec*);
+}