mirror of
https://github.com/DrBeef/DVR.git
synced 2024-12-21 01:51:11 +00:00
166 lines
4.2 KiB
C
166 lines
4.2 KiB
C
/* Emacs style mode select -*- C++ -*-
|
|
*-----------------------------------------------------------------------------
|
|
*
|
|
*
|
|
* PrBoom: a Doom port merged with LxDoom and LSDLDoom
|
|
* based on BOOM, a modified and improved DOOM engine
|
|
* Copyright (C) 1999 by
|
|
* id Software, Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman
|
|
* Copyright (C) 1999-2001 by
|
|
* Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze
|
|
* Copyright 2005, 2006 by
|
|
* Florian Schulze, Colin Phipps, Neil Stevens, Andrey Budko
|
|
*
|
|
* 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., 59 Temple Place - Suite 330, Boston, MA
|
|
* 02111-1307, USA.
|
|
*
|
|
* DESCRIPTION:
|
|
* Handles in-memory caching of WAD lumps
|
|
*
|
|
*-----------------------------------------------------------------------------
|
|
*/
|
|
|
|
// use config.h if autoconf made one -- josh
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "doomstat.h"
|
|
#include "doomtype.h"
|
|
|
|
#ifdef __GNUG__
|
|
#pragma implementation "w_wad.h"
|
|
#endif
|
|
#include "w_wad.h"
|
|
#include "z_zone.h"
|
|
#include "lprintf.h"
|
|
|
|
static struct {
|
|
void *cache;
|
|
#ifdef TIMEDIAG
|
|
int locktic;
|
|
#endif
|
|
unsigned int locks;
|
|
} *cachelump;
|
|
|
|
#ifdef HEAPDUMP
|
|
void W_PrintLump(FILE* fp, void* p) {
|
|
int i;
|
|
for (i=0; i<numlumps; i++)
|
|
if (cachelump[i].cache == p) {
|
|
fprintf(fp, " %8.8s %6u %2d %6d", lumpinfo[i].name,
|
|
W_LumpLength(i), cachelump[i].locks, gametic - cachelump[i].locktic);
|
|
return;
|
|
}
|
|
fprintf(fp, " not found");
|
|
}
|
|
#endif
|
|
|
|
#ifdef TIMEDIAG
|
|
static void W_ReportLocks(void)
|
|
{
|
|
int i;
|
|
lprintf(LO_DEBUG, "W_ReportLocks:\nLump Size Locks Tics\n");
|
|
for (i=0; i<numlumps; i++) {
|
|
if (cachelump[i].locks)
|
|
lprintf(LO_DEBUG, "%8.8s %6u %2d %6d\n", lumpinfo[i].name,
|
|
W_LumpLength(i), cachelump[i].locks, gametic - cachelump[i].locktic);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* W_InitCache
|
|
*
|
|
* cph 2001/07/07 - split from W_Init
|
|
*/
|
|
/*
|
|
void W_InitCache(void)
|
|
{
|
|
// set up caching
|
|
cachelump = calloc(sizeof *cachelump, numlumps);
|
|
if (!cachelump)
|
|
I_Error ("W_Init: Couldn't allocate lumpcache");
|
|
|
|
#ifdef TIMEDIAG
|
|
atexit(W_ReportLocks);
|
|
#endif
|
|
}
|
|
|
|
void W_DoneCache(void)
|
|
{
|
|
}
|
|
*/
|
|
|
|
/* W_CacheLumpNum
|
|
* killough 4/25/98: simplified
|
|
* CPhipps - modified for new lump locking scheme
|
|
* returns a const*
|
|
*/
|
|
/*
|
|
const void *W_CacheLumpNum(int lump)
|
|
{
|
|
const int locks = 1;
|
|
#ifdef RANGECHECK
|
|
if ((unsigned)lump >= (unsigned)numlumps)
|
|
I_Error ("W_CacheLumpNum: %i >= numlumps",lump);
|
|
#endif
|
|
|
|
if (!cachelump[lump].cache) // read the lump in
|
|
W_ReadLump(lump, Z_Malloc(W_LumpLength(lump), PU_CACHE, &cachelump[lump].cache));
|
|
|
|
// cph - if wasn't locked but now is, tell z_zone to hold it
|
|
if (!cachelump[lump].locks && locks) {
|
|
Z_ChangeTag(cachelump[lump].cache,PU_STATIC);
|
|
#ifdef TIMEDIAG
|
|
cachelump[lump].locktic = gametic;
|
|
#endif
|
|
}
|
|
cachelump[lump].locks += locks;
|
|
|
|
#ifdef SIMPLECHECKS
|
|
if (!((cachelump[lump].locks+1) & 0xf))
|
|
lprintf(LO_DEBUG, "W_CacheLumpNum: High lock on %8s (%d)\n",
|
|
lumpinfo[lump].name, cachelump[lump].locks);
|
|
#endif
|
|
|
|
return cachelump[lump].cache;
|
|
}
|
|
|
|
const void *W_LockLumpNum(int lump)
|
|
{
|
|
return W_CacheLumpNum(lump);
|
|
}
|
|
*/
|
|
|
|
/*
|
|
* W_UnlockLumpNum
|
|
*
|
|
* CPhipps - this changes (should reduce) the number of locks on a lump
|
|
*/
|
|
/*
|
|
void W_UnlockLumpNum(int lump)
|
|
{
|
|
const int unlocks = 1;
|
|
#ifdef SIMPLECHECKS
|
|
if ((signed short)cachelump[lump].locks < unlocks)
|
|
lprintf(LO_DEBUG, "W_UnlockLumpNum: Excess unlocks on %8s (%d-%d)\n",
|
|
lumpinfo[lump].name, cachelump[lump].locks, unlocks);
|
|
#endif
|
|
cachelump[lump].locks -= unlocks;
|
|
if (unlocks && !cachelump[lump].locks)
|
|
Z_ChangeTag(cachelump[lump].cache, PU_CACHE);
|
|
}
|
|
*/
|
|
|