* Added optional tracing support which can be very useful when debugging

reference count problems.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38866 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kits/support/Referenceable.cpp

@@ -3,11 +3,22 @@
  * Distributed under the terms of the MIT License.
  */
 
+
 #include <Referenceable.h>
 
 
+//#define TRACE_REFERENCEABLE
+#ifdef TRACE_REFERENCEABLE
+#	include <tracing.h>
+#	define TRACE(x, ...) ktrace_printf(x, __VA_ARGS__);
+#else
+#	define TRACE(x, ...)
+#endif
+
+
 BReferenceable::BReferenceable(bool deleteWhenUnreferenced)
-	: fReferenceCount(1),
+	:
+	fReferenceCount(1),
 	fDeleteWhenUnreferenced(deleteWhenUnreferenced)
 {
 }
@@ -23,6 +34,8 @@ BReferenceable::AcquireReference()
 {
 	if (atomic_add(&fReferenceCount, 1) == 0)
 		FirstReferenceAcquired();
+
+	TRACE("%p: acquire %ld\n", this, fReferenceCount);
 }
 
 
@@ -30,6 +43,7 @@ bool
 BReferenceable::ReleaseReference()
 {
 	bool unreferenced = (atomic_add(&fReferenceCount, -1) == 1);
+	TRACE("%p: release %ld\n", this, fReferenceCount);
 	if (unreferenced)
 		LastReferenceReleased();
 	return unreferenced;