14887Schin /*********************************************************************** 24887Schin * * 34887Schin * This software is part of the ast package * 4*8462SApril.Chin@Sun.COM * Copyright (c) 1985-2008 AT&T Intellectual Property * 54887Schin * and is licensed under the * 64887Schin * Common Public License, Version 1.0 * 7*8462SApril.Chin@Sun.COM * by AT&T Intellectual Property * 84887Schin * * 94887Schin * A copy of the License is available at * 104887Schin * http://www.opensource.org/licenses/cpl1.0.txt * 114887Schin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 124887Schin * * 134887Schin * Information and Software Systems Research * 144887Schin * AT&T Research * 154887Schin * Florham Park NJ * 164887Schin * * 174887Schin * Glenn Fowler <gsf@research.att.com> * 184887Schin * David Korn <dgk@research.att.com> * 194887Schin * Phong Vo <kpv@research.att.com> * 204887Schin * * 214887Schin ***********************************************************************/ 224887Schin #pragma prototyped 234887Schin 244887Schin /* 254887Schin * dtopen() with handle placed in specific vm region 264887Schin */ 274887Schin 284887Schin #include <dt.h> 294887Schin 304887Schin typedef struct Dc_s 314887Schin { 324887Schin Dtdisc_t ndisc; 334887Schin Dtdisc_t* odisc; 344887Schin Vmalloc_t* vm; 354887Schin } Dc_t; 364887Schin 374887Schin static int 384887Schin eventf(Dt_t* dt, int op, void* data, Dtdisc_t* disc) 394887Schin { 404887Schin Dc_t* dc = (Dc_t*)disc; 414887Schin int r; 424887Schin 434887Schin if (dc->odisc->eventf && (r = (*dc->odisc->eventf)(dt, op, data, dc->odisc))) 444887Schin return r; 454887Schin return op == DT_ENDOPEN ? 1 : 0; 464887Schin } 474887Schin 484887Schin static void* 494887Schin memoryf(Dt_t* dt, void* addr, size_t size, Dtdisc_t* disc) 504887Schin { 514887Schin return vmresize(((Dc_t*)disc)->vm, addr, size, VM_RSMOVE); 524887Schin } 534887Schin 544887Schin /* 554887Schin * open a dictionary using disc->memoryf if set or vm otherwise 564887Schin */ 574887Schin 584887Schin Dt_t* 594887Schin dtnew(Vmalloc_t* vm, Dtdisc_t* disc, Dtmethod_t* meth) 604887Schin { 614887Schin Dt_t* dt; 624887Schin Dc_t dc; 634887Schin 644887Schin dc.odisc = disc; 654887Schin dc.ndisc = *disc; 664887Schin dc.ndisc.eventf = eventf; 674887Schin if (!dc.ndisc.memoryf) 684887Schin dc.ndisc.memoryf = memoryf; 694887Schin dc.vm = vm; 704887Schin if (dt = dtopen(&dc.ndisc, meth)) 714887Schin dtdisc(dt, disc, DT_SAMECMP|DT_SAMEHASH); 724887Schin return dt; 734887Schin } 74