new HEAP manager to reduce fragmentation

Change-Id: Ibe725a43e6366d9113ec99df1cc6aafa7bbb770e
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/431
Tested-by: Jenkins Server
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>
Reviewed-by: Douglas R. Gilbert <dgilbert@us.ibm.com>

1 files changed, 42 insertions, 0 deletions

diff --git a/src/kernel/barrier.C b/src/kernel/barrier.C
new file mode 100644
index 000000000..a5dadc63a
--- /dev/null
+++ b/src/kernel/barrier.C
@@ -0,0 +1,42 @@
+//  IBM_PROLOG_BEGIN_TAG
+//  This is an automatically generated prolog.
+//
+//  $Source: src/kernel/barrier.C $
+//
+//  IBM CONFIDENTIAL
+//
+//  COPYRIGHT International Business Machines Corp. 2011
+//
+//  p1
+//
+//  Object Code Only (OCO) source materials
+//  Licensed Internal Code Source Materials
+//  IBM HostBoot Licensed Internal Code
+//
+//  The source code for this program is not published or other-
+//  wise divested of its trade secrets, irrespective of what has
+//  been deposited with the U.S. Copyright Office.
+//
+//  Origin: 30
+//
+//  IBM_PROLOG_END
+#include <kernel/barrier.H>
+#include <arch/ppc.H>
+
+void Barrier::wait()
+{
+    iv_spinlock.lock();
+    --iv_missing;
+    if(iv_missing > 0)
+    {
+        size_t l_event = iv_event;
+        iv_spinlock.unlock();
+        while(iv_event == l_event);
+    }
+    else
+    {
+        iv_missing = iv_count;
+        ++iv_event;
+        iv_spinlock.unlock();
+    }
+}