Split most of POSIX Threads Manager into multiple files.

1 files changed, 126 insertions, 0 deletions

diff --git a/cpukit/posix/src/pthreadsetschedparam.c b/cpukit/posix/src/pthreadsetschedparam.c
new file mode 100644
index 0000000000..50d3bbcea3
--- /dev/null
+++ b/cpukit/posix/src/pthreadsetschedparam.c
@@ -0,0 +1,126 @@
+/*
+ *  13.5.2 Dynamic Thread Scheduling Parameters Access, 
+ *         P1003.1c/Draft 10, p. 124
+ *
+ *  COPYRIGHT (c) 1989-1998.
+ *  On-Line Applications Research Corporation (OAR).
+ *  Copyright assigned to U.S. Government, 1994.
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */
+
+
+#include <pthread.h>
+#include <errno.h>
+
+#include <rtems/system.h>
+#include <rtems/posix/pthread.h>
+#include <rtems/posix/priority.h>
+#include <rtems/posix/time.h>
+
+int pthread_setschedparam(
+  pthread_t           thread,
+  int                 policy,
+  struct sched_param *param
+)
+{
+  register Thread_Control             *the_thread;
+  POSIX_API_Control                   *api;
+  Thread_CPU_budget_algorithms         budget_algorithm;
+  Thread_CPU_budget_algorithm_callout  budget_callout;
+  Objects_Locations                    location;
+ 
+  /*
+   *  Check all the parameters
+   */
+
+  if ( !param )
+    return EINVAL;
+
+  if ( !_POSIX_Priority_Is_valid( param->sched_priority ) )
+    return EINVAL;
+
+  budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_NONE;
+  budget_callout = NULL;
+
+  switch ( policy ) {
+    case SCHED_OTHER:
+      budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_RESET_TIMESLICE;
+      break;
+ 
+    case SCHED_FIFO:
+      budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_NONE;
+      break;
+ 
+    case SCHED_RR:
+      budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_EXHAUST_TIMESLICE;
+      break;
+ 
+    case SCHED_SPORADIC:
+      budget_algorithm  = THREAD_CPU_BUDGET_ALGORITHM_CALLOUT;
+      budget_callout = _POSIX_Threads_Sporadic_budget_callout;
+ 
+      if ( _POSIX_Timespec_to_interval( &param->ss_replenish_period ) <
+           _POSIX_Timespec_to_interval( &param->ss_initial_budget ) )
+        return EINVAL;
+ 
+      if ( !_POSIX_Priority_Is_valid( param->ss_low_priority ) )
+        return EINVAL;
+ 
+      break;
+ 
+    default:
+      return EINVAL;
+  }
+
+  /*
+   *  Actually change the scheduling policy and parameters
+   */
+
+  the_thread = _POSIX_Threads_Get( thread, &location );
+  switch ( location ) {
+    case OBJECTS_ERROR:
+    case OBJECTS_REMOTE:
+      return ESRCH;
+    case OBJECTS_LOCAL:
+      api = the_thread->API_Extensions[ THREAD_API_POSIX ];
+
+      if ( api->schedpolicy == SCHED_SPORADIC )
+        (void) _Watchdog_Remove( &api->Sporadic_timer );
+
+      api->schedpolicy = policy;
+      api->schedparam  = *param;
+      the_thread->budget_algorithm = budget_algorithm;
+      the_thread->budget_callout   = budget_callout;
+
+      switch ( api->schedpolicy ) {
+        case SCHED_OTHER:
+        case SCHED_FIFO:
+        case SCHED_RR:
+          the_thread->cpu_time_budget = _Thread_Ticks_per_timeslice;
+
+          the_thread->real_priority =
+            _POSIX_Priority_To_core( api->schedparam.sched_priority );
+
+          _Thread_Change_priority(
+             the_thread,
+             the_thread->real_priority,
+             TRUE
+          );
+          break;
+ 
+        case SCHED_SPORADIC:
+          api->ss_high_priority = api->schedparam.sched_priority;
+          _POSIX_Threads_Sporadic_budget_TSR( 0, the_thread );
+          break;
+      }
+
+      _Thread_Enable_dispatch();
+      return 0;
+  }
+  return POSIX_BOTTOM_REACHED();
+}