Imported Upstream version 93u+upstream

1 files changed, 81 insertions, 0 deletions

diff --git a/src/lib/libast/cdt/dtnew.c b/src/lib/libast/cdt/dtnew.c
new file mode 100644
index 0000000..5e1bb70
--- /dev/null
+++ b/src/lib/libast/cdt/dtnew.c
@@ -0,0 +1,81 @@
+/***********************************************************************
+*                                                                      *
+*               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>                    *
+*                                                                      *
+***********************************************************************/
+#pragma prototyped
+
+/*
+ * dtopen() with handle placed in specific vm region
+ */
+
+#include <dt.h>
+
+typedef struct Dc_s
+{
+	Dtdisc_t	ndisc;
+	Dtdisc_t*	odisc;
+	Vmalloc_t*	vm;
+} Dc_t;
+
+static int
+eventf(Dt_t* dt, int op, void* data, Dtdisc_t* disc)
+{
+	Dc_t*	dc = (Dc_t*)disc;
+	int	r;
+
+	if (dc->odisc->eventf && (r = (*dc->odisc->eventf)(dt, op, data, dc->odisc)))
+		return r;
+	return op == DT_ENDOPEN ? 1 : 0;
+}
+
+static void*
+memoryf(Dt_t* dt, void* addr, size_t size, Dtdisc_t* disc)
+{
+	return vmresize(((Dc_t*)disc)->vm, addr, size, VM_RSMOVE);
+}
+
+/*
+ * open a dictionary using disc->memoryf if set or vm otherwise
+ */
+
+Dt_t*
+_dtnew(Vmalloc_t* vm, Dtdisc_t* disc, Dtmethod_t* meth, unsigned long version)
+{
+	Dt_t*		dt;
+	Dc_t		dc;
+
+	dc.odisc = disc;
+	dc.ndisc = *disc;
+	dc.ndisc.eventf = eventf;
+	if (!dc.ndisc.memoryf)
+		dc.ndisc.memoryf = memoryf;
+	dc.vm = vm;
+	if (dt = _dtopen(&dc.ndisc, meth, version))
+		dtdisc(dt, disc, DT_SAMECMP|DT_SAMEHASH);
+	return dt;
+}
+
+#undef dtnew
+
+Dt_t*
+dtnew(Vmalloc_t* vm, Dtdisc_t* disc, Dtmethod_t* meth)
+{
+	return _dtnew(vm, disc, meth, 20050420L);
+}