The R Project SVN R

/*
 *
 *  R : A Computer Language for Statistical Data Analysis
 *  file console.c
 *  Copyright (C) 1999  Guido Masarotto
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
/*
   Win32 Api version of malloc and friends
   
   This file is an add-on  to GraphApp, a cross-platform C graphics library.
 */

#include <winbase.h>
#include "ga.h"

void *winmalloc(long size) {
   void *u = NULL;
   HGLOBAL h = GlobalAlloc(GMEM_MOVEABLE|GMEM_DISCARDABLE,(DWORD)size);
   if (h) u = (void *)GlobalLock(h);
   return u;
}

void winfree(void *u) {
   HGLOBAL h;
   if (u && (h = GlobalHandle((LPCVOID) u))) {
       GlobalUnlock(h); 
       GlobalFree(h);
   }
}
   

void *winrealloc(void *u,long newsize) {
   HGLOBAL hold,hnew;
   void *nu = NULL;
   if (!u) return winmalloc(newsize);
   if (!(hold = GlobalHandle((LPCVOID) u))) return NULL;
   hnew = GlobalReAlloc(hold,(DWORD) newsize,GMEM_MOVEABLE);
   if (hnew) nu = (void *) GlobalLock(hnew);
   return nu;
}


char *winstrdup(char *s) {
   char *new = winmalloc(strlen(s)+1);
   if (new) strcpy(new,s);
   return new;
}