mirror of
https://github.com/ZDoom/qzdoom.git
synced 2024-11-14 08:30:49 +00:00
136a2cd05a
move the final GC back to after the type system has been shut down. SVN r3760 (scripting)
496 lines
12 KiB
C++
496 lines
12 KiB
C++
/*
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** dobject.cpp
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** Implements the base class DObject, which most other classes derive from
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**
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**---------------------------------------------------------------------------
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** Copyright 1998-2006 Randy Heit
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "cmdlib.h"
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#include "actor.h"
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#include "dobject.h"
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#include "doomstat.h" // Ideally, DObjects can be used independant of Doom.
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#include "d_player.h" // See p_user.cpp to find out why this doesn't work.
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#include "g_game.h" // Needed for bodyque.
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#include "c_dispatch.h"
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#include "i_system.h"
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#include "r_state.h"
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#include "stats.h"
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#include "a_sharedglobal.h"
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#include "dsectoreffect.h"
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#include "farchive.h"
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ClassReg DObject::RegistrationInfo =
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{
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NULL, // MyClass
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"DObject", // Name
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NULL, // ParentType
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NULL, // Pointers
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&DObject::InPlaceConstructor, // ConstructNative
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sizeof(DObject), // SizeOf
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CLASSREG_PClass, // MetaClassNum
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};
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_DECLARE_TI(DObject)
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CCMD (dumpactors)
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{
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const char *const filters[32] =
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{
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"0:All", "1:Doom", "2:Heretic", "3:DoomHeretic", "4:Hexen", "5:DoomHexen", "6:Raven", "7:IdRaven",
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"8:Strife", "9:DoomStrife", "10:HereticStrife", "11:DoomHereticStrife", "12:HexenStrife",
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"13:DoomHexenStrife", "14:RavenStrife", "15:NotChex", "16:Chex", "17:DoomChex", "18:HereticChex",
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"19:DoomHereticChex", "20:HexenChex", "21:DoomHexenChex", "22:RavenChex", "23:NotStrife", "24:StrifeChex",
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"25:DoomStrifeChex", "26:HereticStrifeChex", "27:NotHexen", "28:HexenStrifeChex", "29:NotHeretic",
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"30:NotDoom", "31:All",
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};
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Printf("%i object class types total\nActor\tEd Num\tSpawnID\tFilter\tSource\n", PClass::AllClasses.Size());
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for (unsigned int i = 0; i < PClass::AllClasses.Size(); i++)
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{
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PClass *cls = PClass::AllClasses[i];
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PClassActor *acls = dyn_cast<PClassActor>(cls);
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if (acls != NULL)
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{
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Printf("%s\t%i\t%i\t%s\t%s\n",
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acls->TypeName.GetChars(), acls->DoomEdNum,
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acls->SpawnID, filters[acls->GameFilter & 31],
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acls->SourceLumpName.GetChars());
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}
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else if (cls != NULL)
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{
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Printf("%s\tn/a\tn/a\tn/a\tEngine (not an actor type)\n", cls->TypeName.GetChars());
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}
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else
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{
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Printf("Type %i is not an object class\n", i);
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}
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}
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}
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CCMD (dumpclasses)
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{
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// This is by no means speed-optimized. But it's an informational console
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// command that will be executed infrequently, so I don't mind.
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struct DumpInfo
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{
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const PClass *Type;
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DumpInfo *Next;
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DumpInfo *Children;
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static DumpInfo *FindType (DumpInfo *root, const PClass *type)
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{
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if (root == NULL)
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{
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return root;
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}
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if (root->Type == type)
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{
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return root;
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}
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if (root->Next != NULL)
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{
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return FindType (root->Next, type);
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}
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if (root->Children != NULL)
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{
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return FindType (root->Children, type);
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}
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return NULL;
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}
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static DumpInfo *AddType (DumpInfo **root, const PClass *type)
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{
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DumpInfo *info, *parentInfo;
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if (*root == NULL)
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{
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info = new DumpInfo;
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info->Type = type;
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info->Next = NULL;
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info->Children = *root;
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*root = info;
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return info;
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}
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if (type->ParentClass == (*root)->Type)
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{
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parentInfo = *root;
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}
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else if (type == (*root)->Type)
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{
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return *root;
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}
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else
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{
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parentInfo = FindType (*root, type->ParentClass);
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if (parentInfo == NULL)
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{
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parentInfo = AddType (root, type->ParentClass);
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}
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}
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// Has this type already been added?
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for (info = parentInfo->Children; info != NULL; info = info->Next)
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{
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if (info->Type == type)
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{
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return info;
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}
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}
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info = new DumpInfo;
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info->Type = type;
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info->Next = parentInfo->Children;
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info->Children = NULL;
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parentInfo->Children = info;
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return info;
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}
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static void PrintTree (DumpInfo *root, int level)
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{
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Printf ("%*c%s\n", level, ' ', root->Type->TypeName.GetChars());
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if (root->Children != NULL)
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{
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PrintTree (root->Children, level + 2);
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}
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if (root->Next != NULL)
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{
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PrintTree (root->Next, level);
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}
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}
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static void FreeTree (DumpInfo *root)
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{
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if (root->Children != NULL)
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{
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FreeTree (root->Children);
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}
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if (root->Next != NULL)
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{
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FreeTree (root->Next);
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}
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delete root;
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}
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};
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unsigned int i;
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int shown, omitted;
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DumpInfo *tree = NULL;
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const PClass *root = NULL;
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if (argv.argc() > 1)
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{
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root = PClass::FindClass (argv[1]);
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if (root == NULL)
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{
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Printf ("Class '%s' not found\n", argv[1]);
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return;
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}
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}
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shown = omitted = 0;
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DumpInfo::AddType (&tree, root != NULL ? root : RUNTIME_CLASS(DObject));
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for (i = 0; i < PClass::AllClasses.Size(); i++)
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{
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PClass *cls = PClass::AllClasses[i];
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if (root == NULL || cls == root || cls->IsDescendantOf(root))
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{
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DumpInfo::AddType (&tree, cls);
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// Printf (" %s\n", PClass::m_Types[i]->Name + 1);
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shown++;
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}
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else
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{
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omitted++;
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}
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}
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DumpInfo::PrintTree (tree, 2);
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DumpInfo::FreeTree (tree);
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Printf ("%d classes shown, %d omitted\n", shown, omitted);
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}
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void DObject::InPlaceConstructor (void *mem)
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{
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new ((EInPlace *)mem) DObject;
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}
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DObject::DObject ()
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: Class(0), ObjectFlags(0)
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{
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ObjectFlags = GC::CurrentWhite & OF_WhiteBits;
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ObjNext = GC::Root;
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GC::Root = this;
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}
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DObject::DObject (PClass *inClass)
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: Class(inClass), ObjectFlags(0)
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{
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ObjectFlags = GC::CurrentWhite & OF_WhiteBits;
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ObjNext = GC::Root;
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GC::Root = this;
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}
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DObject::~DObject ()
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{
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if (!(ObjectFlags & OF_Cleanup) && !PClass::bShutdown)
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{
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DObject **probe;
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PClass *type = GetClass();
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if (!(ObjectFlags & OF_YesReallyDelete))
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{
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Printf ("Warning: '%s' is freed outside the GC process.\n",
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type != NULL ? type->TypeName.GetChars() : "==some object==");
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}
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// Find all pointers that reference this object and NULL them.
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StaticPointerSubstitution(this, NULL);
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// Now unlink this object from the GC list.
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for (probe = &GC::Root; *probe != NULL; probe = &((*probe)->ObjNext))
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{
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if (*probe == this)
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{
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*probe = ObjNext;
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if (&ObjNext == GC::SweepPos)
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{
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GC::SweepPos = probe;
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}
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break;
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}
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}
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// If it's gray, also unlink it from the gray list.
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if (this->IsGray())
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{
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for (probe = &GC::Gray; *probe != NULL; probe = &((*probe)->GCNext))
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{
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if (*probe == this)
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{
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*probe = GCNext;
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break;
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}
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}
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}
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}
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}
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void DObject::Destroy ()
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{
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ObjectFlags = (ObjectFlags & ~OF_Fixed) | OF_EuthanizeMe;
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}
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size_t DObject::PropagateMark()
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{
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const PClass *info = GetClass();
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if (!PClass::bShutdown)
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{
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const size_t *offsets = info->FlatPointers;
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if (offsets == NULL)
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{
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const_cast<PClass *>(info)->BuildFlatPointers();
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offsets = info->FlatPointers;
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}
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while (*offsets != ~(size_t)0)
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{
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GC::Mark((DObject **)((BYTE *)this + *offsets));
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offsets++;
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}
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return info->Size;
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}
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return 0;
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}
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size_t DObject::PointerSubstitution (DObject *old, DObject *notOld)
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{
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const PClass *info = GetClass();
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const size_t *offsets = info->FlatPointers;
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size_t changed = 0;
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if (offsets == NULL)
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{
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const_cast<PClass *>(info)->BuildFlatPointers();
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offsets = info->FlatPointers;
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}
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while (*offsets != ~(size_t)0)
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{
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if (*(DObject **)((BYTE *)this + *offsets) == old)
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{
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*(DObject **)((BYTE *)this + *offsets) = notOld;
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changed++;
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}
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offsets++;
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}
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return changed;
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}
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size_t DObject::StaticPointerSubstitution (DObject *old, DObject *notOld)
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{
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DObject *probe;
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size_t changed = 0;
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int i;
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// Go through all objects.
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i = 0;DObject *last=0;
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for (probe = GC::Root; probe != NULL; probe = probe->ObjNext)
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{
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i++;
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changed += probe->PointerSubstitution(old, notOld);
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last = probe;
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}
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// Go through the bodyque.
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for (i = 0; i < BODYQUESIZE; ++i)
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{
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if (bodyque[i] == old)
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{
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bodyque[i] = static_cast<AActor *>(notOld);
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changed++;
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}
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}
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// Go through players.
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for (i = 0; i < MAXPLAYERS; i++)
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{
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if (playeringame[i])
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changed += players[i].FixPointers (old, notOld);
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}
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// Go through sectors.
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if (sectors != NULL)
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{
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for (i = 0; i < numsectors; ++i)
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{
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#define SECTOR_CHECK(f,t) \
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if (sectors[i].f.p == static_cast<t *>(old)) { sectors[i].f = static_cast<t *>(notOld); changed++; }
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SECTOR_CHECK( SoundTarget, AActor );
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SECTOR_CHECK( CeilingSkyBox, ASkyViewpoint );
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SECTOR_CHECK( FloorSkyBox, ASkyViewpoint );
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SECTOR_CHECK( SecActTarget, ASectorAction );
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SECTOR_CHECK( floordata, DSectorEffect );
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SECTOR_CHECK( ceilingdata, DSectorEffect );
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SECTOR_CHECK( lightingdata, DSectorEffect );
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#undef SECTOR_CHECK
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}
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}
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// Go through bot stuff.
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if (bglobal.firstthing.p == (AActor *)old) bglobal.firstthing = (AActor *)notOld, ++changed;
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if (bglobal.body1.p == (AActor *)old) bglobal.body1 = (AActor *)notOld, ++changed;
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if (bglobal.body2.p == (AActor *)old) bglobal.body2 = (AActor *)notOld, ++changed;
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return changed;
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}
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void DObject::SerializeUserVars(FArchive &arc)
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{
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PSymbolTable *symt;
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FName varname;
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DWORD count, j;
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int *varloc = NULL;
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symt = &GetClass()->Symbols;
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if (arc.IsStoring())
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{
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// Write all user variables.
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for (; symt != NULL; symt = symt->ParentSymbolTable)
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{
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PSymbolTable::MapType::Iterator it(symt->Symbols);
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PSymbolTable::MapType::Pair *pair;
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while (it.NextPair(pair))
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{
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PSymbolVariable *var = dyn_cast<PSymbolVariable>(pair->Value);
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if (var != NULL && var->bUserVar)
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{
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count = var->ValueType.Type == VAL_Array ? var->ValueType.size : 1;
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varloc = (int *)(reinterpret_cast<BYTE *>(this) + var->offset);
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arc << var->SymbolName;
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arc.WriteCount(count);
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for (j = 0; j < count; ++j)
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{
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arc << varloc[j];
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}
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}
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}
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}
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// Write terminator.
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varname = NAME_None;
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arc << varname;
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}
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else
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{
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// Read user variables until 'None' is encountered.
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arc << varname;
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while (varname != NAME_None)
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{
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PSymbolVariable *var = dyn_cast<PSymbolVariable>(symt->FindSymbol(varname, true));
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DWORD wanted = 0;
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if (var != NULL && var->bUserVar)
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{
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wanted = var->ValueType.Type == VAL_Array ? var->ValueType.size : 1;
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varloc = (int *)(reinterpret_cast<BYTE *>(this) + var->offset);
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}
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count = arc.ReadCount();
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for (j = 0; j < MIN(wanted, count); ++j)
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{
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arc << varloc[j];
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}
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if (wanted < count)
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{
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// Ignore remaining values from archive.
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for (; j < count; ++j)
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{
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int foo;
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arc << foo;
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}
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}
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arc << varname;
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}
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}
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}
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void DObject::Serialize (FArchive &arc)
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{
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ObjectFlags |= OF_SerialSuccess;
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}
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void DObject::CheckIfSerialized () const
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{
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if (!(ObjectFlags & OF_SerialSuccess))
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{
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I_Error (
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"BUG: %s::Serialize\n"
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"(or one of its superclasses) needs to call\n"
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"Super::Serialize\n",
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StaticType()->TypeName.GetChars());
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}
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}
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