score: _Heap_Protection_set_delayed_free_fraction

Add and use _Heap_Protection_set_delayed_free_fraction().  This makes it
possible to avoid a dependency on _Thread_Dispatch_is_enabled().

1 files changed, 23 insertions, 0 deletions

diff --git a/cpukit/score/include/rtems/score/heapimpl.h b/cpukit/score/include/rtems/score/heapimpl.h
index abc573de19..a8948edd6f 100644
--- a/cpukit/score/include/rtems/score/heapimpl.h
+++ b/cpukit/score/include/rtems/score/heapimpl.h
@@ -347,6 +347,29 @@ Heap_Block *_Heap_Block_allocate(
   }
 #endif
 
+/**
+ * @brief Sets the fraction of delayed free blocks that is actually freed
+ * during memory shortage.
+ *
+ * The default is to free half the delayed free blocks.  This is equal to a
+ * fraction value of two.
+ *
+ * @param[in] heap The heap control.
+ * @param[in] fraction The fraction is one divided by this fraction value.
+ */
+RTEMS_INLINE_ROUTINE void _Heap_Protection_set_delayed_free_fraction(
+  Heap_Control *heap,
+  uintptr_t fraction
+)
+{
+#ifdef HEAP_PROTECTION
+  heap->Protection.delayed_free_fraction = fraction;
+#else
+  (void) heap;
+  (void) fraction;
+#endif
+}
+
 RTEMS_INLINE_ROUTINE Heap_Block *_Heap_Free_list_head( Heap_Control *heap )
 {
   return &heap->free_list;