From 05df0a846f436295a490cc9ac19e5a4061c3a575 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Mon, 17 May 1999 20:41:13 +0000
Subject: Thread Handler split into multiple files.  Eventually, as RTEMS is
 split into one function per file, this will decrease the size of executables.

---
 c/src/exec/score/src/threadinitialize.c | 175 ++++++++++++++++++++++++++++++++
 1 file changed, 175 insertions(+)
 create mode 100644 c/src/exec/score/src/threadinitialize.c

(limited to 'c/src/exec/score/src/threadinitialize.c')

diff --git a/c/src/exec/score/src/threadinitialize.c b/c/src/exec/score/src/threadinitialize.c
new file mode 100644
index 0000000000..3188cfb438
--- /dev/null
+++ b/c/src/exec/score/src/threadinitialize.c
@@ -0,0 +1,175 @@
+/*
+ *  Thread Handler
+ *
+ *
+ *  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 found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */
+
+#include <rtems/system.h>
+#include <rtems/score/apiext.h>
+#include <rtems/score/context.h>
+#include <rtems/score/interr.h>
+#include <rtems/score/isr.h>
+#include <rtems/score/object.h>
+#include <rtems/score/priority.h>
+#include <rtems/score/states.h>
+#include <rtems/score/sysstate.h>
+#include <rtems/score/thread.h>
+#include <rtems/score/threadq.h>
+#include <rtems/score/userext.h>
+#include <rtems/score/wkspace.h>
+
+/*PAGE
+ *
+ *  _Thread_Initialize
+ *
+ *  XXX
+ */
+
+boolean _Thread_Initialize(
+  Objects_Information                  *information,
+  Thread_Control                       *the_thread,
+  void                                 *stack_area,
+  unsigned32                            stack_size,
+  boolean                               is_fp,
+  Priority_Control                      priority,
+  boolean                               is_preemptible,
+  Thread_CPU_budget_algorithms          budget_algorithm,
+  Thread_CPU_budget_algorithm_callout   budget_callout,
+  unsigned32                            isr_level,
+  Objects_Name                          name
+)
+{
+  unsigned32           actual_stack_size = 0;
+  void                *stack = NULL;
+  void                *fp_area;
+  void                *extensions_area;
+
+  /*
+   *  Initialize the Ada self pointer
+   */
+
+  the_thread->rtems_ada_self = NULL;
+
+  /*
+   *  Allocate and Initialize the stack for this thread.
+   */
+
+
+  if ( !stack_area ) {
+    if ( !_Stack_Is_enough( stack_size ) )
+      actual_stack_size = STACK_MINIMUM_SIZE;
+    else
+      actual_stack_size = stack_size;
+
+    actual_stack_size = _Thread_Stack_Allocate( the_thread, actual_stack_size );
+ 
+    if ( !actual_stack_size ) 
+      return FALSE;                     /* stack allocation failed */
+
+    stack = the_thread->Start.stack;
+    the_thread->Start.core_allocated_stack = TRUE;
+  } else {
+    stack = stack_area;
+    actual_stack_size = stack_size;
+    the_thread->Start.core_allocated_stack = FALSE;
+  }
+
+  _Stack_Initialize(
+     &the_thread->Start.Initial_stack,
+     stack,
+     actual_stack_size
+  );
+
+  /*
+   *  Allocate the floating point area for this thread
+   */
+  
+  if ( is_fp ) {
+
+    fp_area = _Workspace_Allocate( CONTEXT_FP_SIZE );
+    if ( !fp_area ) {
+      _Thread_Stack_Free( the_thread );
+      return FALSE;
+    }
+    fp_area = _Context_Fp_start( fp_area, 0 );
+
+  } else
+    fp_area = NULL;
+
+  the_thread->fp_context       = fp_area;
+  the_thread->Start.fp_context = fp_area;
+
+  /*
+   *  Allocate the extensions area for this thread
+   */
+
+  if ( _Thread_Maximum_extensions ) {
+    extensions_area = _Workspace_Allocate(
+      (_Thread_Maximum_extensions + 1) * sizeof( void * )
+    );
+
+    if ( !extensions_area ) {
+      if ( fp_area )
+        (void) _Workspace_Free( fp_area );
+
+      _Thread_Stack_Free( the_thread );
+
+      return FALSE;
+    }
+  } else 
+    extensions_area = NULL;
+  
+  the_thread->extensions = (void **) extensions_area;
+
+  /*
+   *  General initialization
+   */
+
+  the_thread->Start.is_preemptible   = is_preemptible;
+  the_thread->Start.budget_algorithm = budget_algorithm;
+  the_thread->Start.budget_callout   = budget_callout;
+  the_thread->Start.isr_level        = isr_level;
+
+  the_thread->current_state          = STATES_DORMANT;
+  the_thread->resource_count         = 0;
+  the_thread->real_priority          = priority;
+  the_thread->Start.initial_priority = priority;
+  the_thread->ticks_executed         = 0;
+ 
+  _Thread_Set_priority( the_thread, priority );
+
+  /*
+   *  Open the object
+   */
+
+  _Objects_Open( information, &the_thread->Object, name );
+
+  /*
+   *  Invoke create extensions
+   */
+
+  if ( !_User_extensions_Thread_create( the_thread ) ) {
+
+    if ( extensions_area )
+      (void) _Workspace_Free( extensions_area );
+
+    if ( fp_area )
+      (void) _Workspace_Free( fp_area );
+
+    _Thread_Stack_Free( the_thread );
+
+    return FALSE;
+  }
+
+  return TRUE;
+   
+}
-- 
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