1 files changed, 153 insertions, 0 deletions
diff --git a/c/src/exec/posix/src/sched.c b/c/src/exec/posix/src/sched.c
new file mode 100644
index 0000000000..e558126926
--- /dev/null
+++ b/c/src/exec/posix/src/sched.c
@@ -0,0 +1,153 @@
+/*
+ *  $Id$
+ */
+
+#include <assert.h>
+#include <sched.h>
+#include <errno.h>
+
+#include <rtems/system.h>
+#include <rtems/score/tod.h>
+#include <rtems/score/thread.h>
+#include <rtems/posix/seterr.h>
+#include <rtems/posix/priority.h>
+#include <rtems/posix/time.h>
+
+/*PAGE
+ *
+ *  13.3.1 Set Scheduling Parameters, P1003.1b-1993, p. 252
+ *
+ */
+
+int sched_setparam(
+  pid_t                     pid,
+  const struct sched_param *param
+)
+{
+  set_errno_and_return_minus_one( ENOSYS );
+}
+
+/*PAGE
+ *
+ *  13.3.2 Set Scheduling Parameters, P1003.1b-1993, p. 253
+ */
+
+int sched_getparam(
+  pid_t                     pid,
+  const struct sched_param *param
+)
+{
+  set_errno_and_return_minus_one( ENOSYS );
+}
+
+/*PAGE
+ *
+ *  13.3.3 Set Scheduling Policy and Scheduling Parameters, 
+ *         P1003.1b-1993, p. 254
+ */
+
+int sched_setscheduler(
+  pid_t                     pid,
+  int                       policy,
+  const struct sched_param *param
+)
+{
+  set_errno_and_return_minus_one( ENOSYS );
+}
+
+/*PAGE
+ *
+ *  13.3.4 Get Scheduling Policy, P1003.1b-1993, p. 256
+ */
+
+int sched_getscheduler(
+  pid_t                     pid
+)
+{
+  set_errno_and_return_minus_one( ENOSYS );
+}
+
+/*PAGE
+ *
+ *  13.3.6 Get Scheduling Parameter Limits, P1003.1b-1993, p. 258
+ */
+
+int sched_get_priority_max(
+  int  policy
+)
+{
+  switch ( policy ) {
+    case SCHED_OTHER:
+    case SCHED_FIFO:
+    case SCHED_RR:
+    case SCHED_SPORADIC:
+      break;
+ 
+    default:
+      set_errno_and_return_minus_one( EINVAL );
+  }
+
+  return POSIX_SCHEDULER_MAXIMUM_PRIORITY;
+}
+
+/*PAGE
+ *
+ *  13.3.6 Get Scheduling Parameter Limits, P1003.1b-1993, p. 258
+ */
+
+int sched_get_priority_min(
+  int  policy
+)
+{
+  switch ( policy ) {
+    case SCHED_OTHER:
+    case SCHED_FIFO:
+    case SCHED_RR:
+    case SCHED_SPORADIC:
+      break;
+ 
+    default:
+      set_errno_and_return_minus_one( EINVAL );
+  }
+
+  return POSIX_SCHEDULER_MINIMUM_PRIORITY;
+}
+
+/*PAGE
+ *
+ *  13.3.6 Get Scheduling Parameter Limits, P1003.1b-1993, p. 258
+ */
+
+int sched_rr_get_interval(
+  pid_t             pid,
+  struct timespec  *interval
+)
+{
+  /* XXX do we need to support different time quantums per thread */
+
+  /*
+   *  Only supported for the "calling process" (i.e. this node).
+   */
+
+  if ( pid != getpid() )
+    set_errno_and_return_minus_one( ESRCH );
+
+  if ( !interval )
+    set_errno_and_return_minus_one( EINVAL );
+
+  _POSIX_Interval_to_timespec( _Thread_Ticks_per_timeslice, interval );
+  return 0;
+}
+
+/*PAGE
+ *
+ *  13.3.5 Yield Processor, P1003.1b-1993, p. 257
+ */
+
+int sched_yield( void )
+{
+  _Thread_Disable_dispatch();
+    _Thread_Yield_processor();
+  _Thread_Enable_dispatch();
+  return 0;
+}