3 files changed, 57 insertions, 0 deletions
diff --git a/cpukit/rtems/Makefile.am b/cpukit/rtems/Makefile.am
index e9f990626e..8d593a4fa2 100644
--- a/cpukit/rtems/Makefile.am
+++ b/cpukit/rtems/Makefile.am
@@ -254,6 +254,7 @@ librtems_a_SOURCES += src/dpmemdata.c
 
 ## WORKSPACE_FILES
 librtems_a_SOURCES += src/workspace.c
+librtems_a_SOURCES += src/workspacegreedy.c
 
 librtems_a_SOURCES += src/modes.c
 
diff --git a/cpukit/rtems/include/rtems/rtems/support.h b/cpukit/rtems/include/rtems/rtems/support.h
index 220411d984..08c911d7e6 100644
--- a/cpukit/rtems/include/rtems/rtems/support.h
+++ b/cpukit/rtems/include/rtems/rtems/support.h
@@ -101,6 +101,24 @@ bool rtems_workspace_free(
   void *pointer
 );
 
+/**
+ * @brief Greedy allocate that empties the workspace.
+ *
+ * Afterward the workspace has at most @a remaining_free_space free space left
+ * in one free block.  All other blocks are used.
+ *
+ * @see rtems_workspace_greedy_free().
+ */
+void *rtems_workspace_greedy_allocate( size_t remaining_free_space );
+
+/**
+ * @brief Frees space of a greedy allocation.
+ *
+ * The @a opaque argument must be the return value of
+ * rtems_workspace_greedy_allocate().
+ */
+void rtems_workspace_greedy_free( void *opaque );
+
 /** @} */
 
 #ifndef __RTEMS_APPLICATION__
diff --git a/cpukit/rtems/src/workspacegreedy.c b/cpukit/rtems/src/workspacegreedy.c
new file mode 100644
index 0000000000..6d8fd9b937
--- /dev/null
+++ b/cpukit/rtems/src/workspacegreedy.c
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2012 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Obere Lagerstr. 30
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.com/license/LICENSE.
+ */
+
+#if HAVE_CONFIG_H
+  #include "config.h"
+#endif
+
+#include <rtems/rtems/support.h>
+#include <rtems/score/wkspace.h>
+
+void *rtems_workspace_greedy_allocate( size_t remaining_free_space )
+{
+  void *opaque;
+
+  _Thread_Disable_dispatch();
+  opaque = _Heap_Greedy_allocate( &_Workspace_Area, remaining_free_space );
+  _Thread_Enable_dispatch();
+
+  return opaque;
+}
+
+void rtems_workspace_greedy_free( void *opaque )
+{
+  _Thread_Disable_dispatch();
+  _Heap_Greedy_free( &_Workspace_Area, opaque );
+  _Thread_Enable_dispatch();
+}