2000-10-18 Joel Sherrill <joel@OARcorp.com>

	* libc/Makefile.am: Added mallocfreespace.c.
	* libc/mallocfreespace.c: New file based on work by Nick Simon
	<Nick.SIMON@syntegra.bt.co.uk> which he included in malloc.c.
	* libc/libcsupport.h: Added prototype for malloc_free_space().

2 files changed, 41 insertions, 0 deletions

diff --git a/cpukit/libcsupport/include/rtems/libcsupport.h b/cpukit/libcsupport/include/rtems/libcsupport.h
index 4c6764c1d4..4def1e82c5 100644
--- a/cpukit/libcsupport/include/rtems/libcsupport.h
+++ b/cpukit/libcsupport/include/rtems/libcsupport.h
@@ -33,6 +33,7 @@ extern void malloc_walk(size_t source, size_t printf_enabled);
 extern void libc_init(int reentrant);
 extern int  host_errno(void);
 extern void fix_syscall_errno(void);
+extern size_t malloc_free_space();
 
 #ifdef __cplusplus
 }
diff --git a/cpukit/libcsupport/src/mallocfreespace.c b/cpukit/libcsupport/src/mallocfreespace.c
new file mode 100644
index 0000000000..28ef83278e
--- /dev/null
+++ b/cpukit/libcsupport/src/mallocfreespace.c
@@ -0,0 +1,40 @@
+/*
+ *  RTEMS Malloc Get Status Information
+ *
+ *
+ *  COPYRIGHT (c) 1989-2000.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */
+
+#define __RTEMS_VIOLATE_KERNEL_VISIBILITY__
+#include <rtems.h>
+#include "libcsupport.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <assert.h>
+#include <errno.h>
+#include <string.h>
+
+extern rtems_id RTEMS_Malloc_Heap;
+
+/*
+ *  Find amount of free heap remaining
+ */
+
+size_t malloc_free_space( void )
+{
+  region_information_block   heap_info;
+
+  if ( region_get_information( RTEMS_Malloc_Heap, &heap_info ) ) {
+    return (size_t) heap_info.free_size;
+  }
+  return (size_t) -1;
+}