Imported Upstream version 93u+upstream

1 files changed, 63 insertions, 0 deletions

diff --git a/src/lib/libast/vmalloc/vmdcheap.c b/src/lib/libast/vmalloc/vmdcheap.c
new file mode 100644
index 0000000..88edc72
--- /dev/null
+++ b/src/lib/libast/vmalloc/vmdcheap.c
@@ -0,0 +1,63 @@
+/***********************************************************************
+*                                                                      *
+*               This software is part of the ast package               *
+*          Copyright (c) 1985-2011 AT&T Intellectual Property          *
+*                      and is licensed under the                       *
+*                 Eclipse Public License, Version 1.0                  *
+*                    by AT&T Intellectual Property                     *
+*                                                                      *
+*                A copy of the License is available at                 *
+*          http://www.eclipse.org/org/documents/epl-v10.html           *
+*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
+*                                                                      *
+*              Information and Software Systems Research               *
+*                            AT&T Research                             *
+*                           Florham Park NJ                            *
+*                                                                      *
+*                 Glenn Fowler <gsf@research.att.com>                  *
+*                  David Korn <dgk@research.att.com>                   *
+*                   Phong Vo <kpv@research.att.com>                    *
+*                                                                      *
+***********************************************************************/
+#if defined(_UWIN) && defined(_BLD_ast)
+
+void _STUB_vmdcheap(){}
+
+#else
+
+#include	"vmhdr.h"
+
+/*	A discipline to get memory from the heap.
+**
+**	Written by Kiem-Phong Vo, kpv@research.att.com, 01/16/94.
+*/
+#if __STD_C
+static Void_t* heapmem(Vmalloc_t* vm, Void_t* caddr,
+			size_t csize, size_t nsize,
+			Vmdisc_t* disc)
+#else
+static Void_t* heapmem(vm, caddr, csize, nsize, disc)
+Vmalloc_t*	vm;	/* region doing allocation from 	*/
+Void_t*		caddr;	/* current low address			*/
+size_t		csize;	/* current size				*/
+size_t		nsize;	/* new size				*/
+Vmdisc_t*	disc;	/* discipline structure			*/
+#endif
+{
+	if(csize == 0 && nsize == 0)
+		return NIL(Void_t*);
+	else if(csize == 0)
+		return vmalloc(Vmheap,nsize);
+	else if(nsize == 0)
+		return vmfree(Vmheap,caddr) >= 0 ? caddr : NIL(Void_t*);
+	else	return vmresize(Vmheap,caddr,nsize,0);
+}
+
+static Vmdisc_t _Vmdcheap = { heapmem, NIL(Vmexcept_f), 0 };
+__DEFINE__(Vmdisc_t*,Vmdcheap,&_Vmdcheap);
+
+#ifdef NoF
+NoF(vmdcheap)
+#endif
+
+#endif