1 files changed, 73 insertions, 0 deletions
diff --git a/private/crt32/winheap/heapmin.c b/private/crt32/winheap/heapmin.c
new file mode 100644
index 000000000..6073adf21
--- /dev/null
+++ b/private/crt32/winheap/heapmin.c
@@ -0,0 +1,73 @@
+/***
+*heapmin.c - Minimize the heap
+*
+*	Copyright (c) 1989-1991, Microsoft Corporation. All rights reserved.
+*
+*Purpose:
+*	Minimize the heap freeing as much memory as possible back
+*	to the OS.
+*
+*Revision History:
+*	08-28-89   JCR	Module created.
+*	11-06-89   JCR	Improved, partitioned
+*	11-13-89   GJF	Added MTHREAD support, also fixed copyright
+*	12-14-89   GJF	Couple of bug fixes, some tuning, cleaned up the
+*			formatting a bit and changed header file name to
+*			heap.h
+*	12-20-89   GJF	Removed references to plastdesc
+*	03-11-90   GJF	Replaced _cdecl with _CALLTYPE1, added #include
+*			<cruntime.h> and removed #include <register.h>.
+*	03-29-90   GJF	Made _heapmin_region() and _free_partial_region()
+*			_CALLTYPE4.
+*	07-24-90   SBM	Compiles cleanly with -W3 (tentatively removed
+*			unreferenced labels and unreachable code), removed
+*			'32' from API names
+*	09-28-90   GJF	New-style function declarators. Also, rewrote expr.
+*			to avoid using cast as lvalue.
+*	12-04-90  SRW	Changed to include <oscalls.h> instead of <doscalls.h>
+*	12-06-90  SRW	Added _CRUISER_ and _WIN32 conditionals.
+*	12-28-90  SRW	Added cast of void * to char * for Mips C Compiler
+*       03-05-91  GJF   Changed strategy for rover - old version available
+*                       by #define-ing _OLDROVER_.
+*       06-27-94  SRW   Ported to Win32 Heap API
+*
+*******************************************************************************/
+
+#include <cruntime.h>
+#include <oscalls.h>
+#include <malloc.h>
+#include <os2dll.h>
+#include <stdlib.h>
+
+#ifndef _POSIX_
+
+/***
+*_heapmin() - Minimize the heap
+*
+*Purpose:
+*	Minimize the heap freeing as much memory as possible back
+*	to the OS.
+*
+*Entry:
+*	(void)
+*
+*Exit:
+*
+*	 0 = no error has occurred
+*	-1 = an error has occurred (errno is set)
+*
+*Exceptions:
+*
+*******************************************************************************/
+
+int _CALLTYPE1 _heapmin(void)
+{
+    if (HeapCompact( GetProcessHeap(), 0 ) == 0) {
+        return -1;
+        }
+    else {
+        return 0;
+        }
+}
+
+#endif  /* !_POSIX_ */