2007-05-03 Joel Sherrill <joel@OARcorp.com>

	* ChangeLog, libcsupport/src/malloc.c,
	libcsupport/src/mallocfreespace.c, sapi/include/confdefs.h,
	score/Makefile.am, score/preinstall.am: malloc never blocks so the
	Region Manager is quite heavy for implementing this. This patch
	implements the C Program Heap directly in terms of the new Protected
	Heap handler. This handler is a direct use of a SuperCore Heap in
	conjunction with the Allocator Mutex used internally by RTEMS. This
	saves 3184 bytes on most SPARC test executables.
	* score/include/rtems/score/protectedheap.h, score/src/pheapallocate.c,
	score/src/pheapallocatealigned.c, score/src/pheapextend.c,
	score/src/pheapfree.c, score/src/pheapgetblocksize.c,
	score/src/pheapgetfreeinfo.c, score/src/pheapgetinfo.c,
	score/src/pheapinit.c, score/src/pheapresizeblock.c,
	score/src/pheapwalk.c: New files.

1 files changed, 5 insertions, 6 deletions

diff --git a/cpukit/libcsupport/src/mallocfreespace.c b/cpukit/libcsupport/src/mallocfreespace.c
index 448dca46e4..51a02fc51f 100644
--- a/cpukit/libcsupport/src/mallocfreespace.c
+++ b/cpukit/libcsupport/src/mallocfreespace.c
@@ -19,6 +19,7 @@
 #define __RTEMS_VIOLATE_KERNEL_VISIBILITY__
 #include <rtems.h>
 #include <rtems/libcsupport.h>
+#include <rtems/score/protectedheap.h>
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -27,7 +28,7 @@
 #include <errno.h>
 #include <string.h>
 
-extern rtems_id RTEMS_Malloc_Heap;
+extern Heap_Control  RTEMS_Malloc_Heap;
 
 /*
  *  Find amount of free heap remaining
@@ -35,10 +36,8 @@ extern rtems_id RTEMS_Malloc_Heap;
 
 size_t malloc_free_space( void )
 {
-  region_information_block   heap_info;
+  Heap_Information info;
 
-  if ( !rtems_region_get_free_information( RTEMS_Malloc_Heap, &heap_info ) ) {
-    return (size_t) heap_info.Free.largest;
-  }
-  return (size_t) -1;
+  _Protected_heap_Get_free_information( &RTEMS_Malloc_Heap, &info );
+  return (size_t) info.largest;
 }