From 5e9b32b439627068a0292370fe595220dbfc95a0 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Tue, 26 Sep 1995 19:27:15 +0000
Subject: posix support initially added

---
 c/src/exec/posix/src/sched.c | 126 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 c/src/exec/posix/src/sched.c

(limited to 'c/src/exec/posix/src/sched.c')

diff --git a/c/src/exec/posix/src/sched.c b/c/src/exec/posix/src/sched.c
new file mode 100644
index 0000000000..230fe5dbbb
--- /dev/null
+++ b/c/src/exec/posix/src/sched.c
@@ -0,0 +1,126 @@
+/*  sched.c
+ *
+ */
+
+#include <sched.h>
+#include <rtems/score/tod.h>
+#include <rtems/score/thread.h>
+#include <rtems/posix/priority.h>
+
+#ifdef NOT_IMPLEMENTED_YET
+
+/*PAGE
+ *
+ *  13.3.1 Set Scheduling Parameters, P1003.1b-1993, p. 252
+ *
+ */
+
+int sched_setparam(
+  pid_t                     pid,
+  const struct sched_param *param
+)
+{
+  return POSIX_NOT_IMPLEMENTED();
+}
+
+/*PAGE
+ *
+ *  13.3.2 Set Scheduling Parameters, P1003.1b-1993, p. 253
+ */
+
+int sched_getparam(
+  pid_t                     pid,
+  const struct sched_param *param
+)
+{
+  return POSIX_NOT_IMPLEMENTED();
+}
+
+/*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
+)
+{
+  return POSIX_NOT_IMPLEMENTED();
+}
+
+/*PAGE
+ *
+ *  13.3.4 Get Scheduling Policy, P1003.1b-1993, p. 256
+ */
+
+int sched_getscheduler(
+  pid_t                     pid
+)
+{
+  return POSIX_NOT_IMPLEMENTED();
+}
+
+#endif
+
+/*PAGE
+ *
+ *  13.3.6 Get Scheduling Parameter Limits, P1003.1b-1993, p. 258
+ */
+
+int sched_get_priority_max(
+  int  policy
+)
+{
+  /* XXX error check the policy */
+  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
+)
+{
+  /* XXX error check the policy */
+  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
+)
+{
+  time_t us_per_quantum; 
+
+  /* XXX eventually should support different time quantums per thread */
+
+  /* XXX should get for errors? (bad pid) */
+
+  us_per_quantum = _TOD_Microseconds_per_tick * _Thread_Ticks_per_timeslice;
+
+  interval->tv_sec  = us_per_quantum / TOD_MICROSECONDS_PER_SECOND;
+  interval->tv_nsec = (us_per_quantum % TOD_MICROSECONDS_PER_SECOND) * 1000;
+  return 0;
+}
+
+/*PAGE
+ *
+ *  13.3.5 Yield Processor, P1003.1b-1993, p. 257
+ */
+
+int sched_yield( void )
+{
+  _Thread_Yield_processor();
+  return 0;
+}
-- 
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