1 files changed, 77 insertions, 0 deletions
diff --git a/TAO/tao/Priority_Mapping.cpp b/TAO/tao/Priority_Mapping.cpp
new file mode 100644
index 00000000000..ea6e240bd22
--- /dev/null
+++ b/TAO/tao/Priority_Mapping.cpp
@@ -0,0 +1,77 @@
+// $Id$
+
+#include "tao/orbconf.h"
+
+#if defined (TAO_HAS_RT_CORBA)
+
+#include "tao/Priority_Mapping.h"
+#include "ace/Sched_Params.h"
+
+#if !defined (__ACE_INLINE__)
+# include "tao/Priority_Mapping.i"
+#endif /* ! __ACE_INLINE__ */
+
+ACE_RCSID(tao, Priority_Mapping, "$Id$")
+
+TAO_Priority_Mapping::TAO_Priority_Mapping (int policy)
+  :  policy_ (policy)
+{
+  this->min_ = ACE_Sched_Params::priority_min (this->policy_);
+  this->max_ = ACE_Sched_Params::priority_max (this->policy_);
+}
+
+TAO_Priority_Mapping::~TAO_Priority_Mapping (void)
+{
+}
+
+CORBA::Boolean
+TAO_Priority_Mapping::to_native (RTCORBA::Priority corba_priority,
+                                 RTCORBA::NativePriority &native_priority)
+{
+  if (corba_priority < 0)
+    return 0;
+
+  native_priority =
+    this->min_
+    + ((this->max_ - this->min_)
+       * corba_priority
+       / (RTCORBA::maxPriority - RTCORBA::minPriority));
+
+  return 1;
+}
+
+CORBA::Boolean
+TAO_Priority_Mapping::to_CORBA (RTCORBA::NativePriority native_priority,
+                                RTCORBA::Priority &corba_priority)
+{
+  if ((this->min_ < this->max_
+       && (native_priority < this->min_
+           || native_priority > this->max_))
+      || (this->min_ > this->max_
+          && (native_priority < this->max_
+              || native_priority > this->min_)))
+    {
+      ACE_DEBUG ((LM_DEBUG,
+                  "TAO (%P|%t) - Priority_Mapping::to_CORBA: "
+                  " priority %d out of range [%d,%d]\n",
+                  native_priority, this->min_, this->max_));
+      return 0;
+    }
+
+  int delta = this->max_ - this->min_;
+  if (delta != 0)
+    {
+      corba_priority =
+        RTCORBA::minPriority
+        + ((RTCORBA::maxPriority - RTCORBA::minPriority)
+           * native_priority / delta);
+    }
+  else
+    {
+      corba_priority = this->min_;
+    }
+
+  return 1;
+}
+
+#endif /* TAO_HAS_RT_CORBA */