From 8d37343a5d3fef53422c7728a4e8b65bc4045bdb Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Sun, 23 Jan 2000 19:07:02 +0000
Subject: Directive rtems_task_variable_get() added by Eric Norum.

---
 c/src/exec/rtems/include/rtems/rtems/tasks.h | 12 +++++
 c/src/exec/rtems/src/Makefile.am             |  3 +-
 c/src/exec/rtems/src/taskvariableget.c       | 72 ++++++++++++++++++++++++++++
 3 files changed, 86 insertions(+), 1 deletion(-)
 create mode 100644 c/src/exec/rtems/src/taskvariableget.c

(limited to 'c')

diff --git a/c/src/exec/rtems/include/rtems/rtems/tasks.h b/c/src/exec/rtems/include/rtems/rtems/tasks.h
index f9234e6e89..10938376e2 100644
--- a/c/src/exec/rtems/include/rtems/rtems/tasks.h
+++ b/c/src/exec/rtems/include/rtems/rtems/tasks.h
@@ -416,6 +416,18 @@ rtems_status_code rtems_task_variable_add(
   void    (*dtor)(void *)
 );
 
+/*
+ *  rtems_task_variable_get
+ *
+ *  This directive gets the value of a task variable.
+ */
+
+rtems_status_code rtems_task_variable_get(
+  rtems_id tid,
+  void **ptr,
+  void **result
+);
+
 /*
  *  rtems_task_variable_delete
  *
diff --git a/c/src/exec/rtems/src/Makefile.am b/c/src/exec/rtems/src/Makefile.am
index 1752e16e4c..ddf816a050 100644
--- a/c/src/exec/rtems/src/Makefile.am
+++ b/c/src/exec/rtems/src/Makefile.am
@@ -14,7 +14,8 @@ MP_C_FILES = eventmp.c mp.c msgmp.c partmp.c regionmp.c semmp.c signalmp.c \
 TASK_C_FILES = tasks.c taskcreate.c taskdelete.c taskgetnote.c taskident.c \
     taskinitusers.c taskissuspended.c taskmode.c taskrestart.c taskresume.c \
     tasksetnote.c tasksetpriority.c taskstart.c tasksuspend.c \
-    taskwakeafter.c taskwakewhen.c taskvariableadd.c taskvariabledelete.c
+    taskwakeafter.c taskwakewhen.c taskvariableadd.c taskvariabledelete.c \
+    taskvariableget.c
 
 RATEMON_C_FILES = ratemon.c ratemoncancel.c ratemoncreate.c ratemondelete.c \
     ratemongetstatus.c ratemonident.c ratemonperiod.c ratemontimeout.c
diff --git a/c/src/exec/rtems/src/taskvariableget.c b/c/src/exec/rtems/src/taskvariableget.c
new file mode 100644
index 0000000000..9beb0c4045
--- /dev/null
+++ b/c/src/exec/rtems/src/taskvariableget.c
@@ -0,0 +1,72 @@
+/*
+ *  rtems_task_variable_get - Get a per-task variable
+ *
+ *
+ *  COPYRIGHT (c) 1989-1999.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  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 <rtems/system.h>
+#include <rtems/rtems/tasks.h>
+#include <rtems/score/wkspace.h>
+
+/*
+ *  rtems_task_variable_get
+ *
+ *  This directive gets the value of a task variable. 
+ */
+
+rtems_status_code rtems_task_variable_get(
+  rtems_id tid,
+  void **ptr,
+  void **result
+)
+{
+  Thread_Control        *the_thread;
+  Objects_Locations      location;
+  rtems_task_variable_t *tvp;
+
+  the_thread = _Thread_Get (tid, &location);
+  switch (location) {
+  case OBJECTS_REMOTE:
+#if defined(RTEMS_MULTIPROCESSING)
+    _Thread_Dispatch();
+    return RTEMS_ILLEGAL_ON_REMOTE_OBJECT;
+#endif
+
+  case OBJECTS_ERROR:
+    return RTEMS_INVALID_ID;
+
+  default:
+    return RTEMS_INTERNAL_ERROR;
+
+  case OBJECTS_LOCAL:
+
+    /*
+     *  Figure out if the variable is in this task's list.
+     */
+
+    tvp = the_thread->task_variables;
+    while (tvp) {
+      if (tvp->ptr == ptr) {
+	/*
+	 * Should this return the current (i.e not the
+	 * saved) value if `tid' is the current task?
+	 */
+        *result = tvp->var;
+        _Thread_Enable_dispatch();
+        return RTEMS_SUCCESSFUL;
+      }
+      tvp = tvp->next;
+    }
+    _Thread_Enable_dispatch();
+    return RTEMS_INVALID_ADDRESS;
+  }
+  return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */
+}
-- 
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