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authorJoel Sherrill <joel.sherrill@OARcorp.com>1999-05-17 20:41:13 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>1999-05-17 20:41:13 +0000
commit05df0a846f436295a490cc9ac19e5a4061c3a575 (patch)
tree886d4b9da28181bc0e7fe64a193b2642dcb3f5b2 /c/src/exec/score/src/threadinitialize.c
parenta238cc97d0d0a865a26cec223b86960cca878127 (diff)
downloadrtems-05df0a846f436295a490cc9ac19e5a4061c3a575.tar.bz2
Thread Handler split into multiple files. Eventually, as RTEMS is
split into one function per file, this will decrease the size of executables.
Diffstat (limited to 'c/src/exec/score/src/threadinitialize.c')
-rw-r--r--c/src/exec/score/src/threadinitialize.c175
1 files changed, 175 insertions, 0 deletions
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;
+
+}