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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef AGS_ENGINE_AC_DYNOBJ_CC_MANAGED_OBJECT_POOL_H
#define AGS_ENGINE_AC_DYNOBJ_CC_MANAGED_OBJECT_POOL_H
#include "common/std/vector.h"
#include "common/std/queue.h"
#include "common/std/map.h"
#include "ags/shared/core/platform.h"
#include "ags/engine/script/runtime_script_value.h"
#include "ags/engine/ac/dynobj/cc_script_object.h" // IScriptObject
namespace AGS3 {
namespace AGS {
namespace Shared {
class Stream;
} // namespace Shared
} // namespace AGS
using namespace AGS; // FIXME later
struct Pointer_Hash {
uint operator()(void *v) const {
return static_cast<uint>(reinterpret_cast<uintptr>(v));
}
};
struct ManagedObjectPool final {
private:
// TODO: find out if we can make handle size_t
struct ManagedObject {
ScriptValueType obj_type;
int32_t handle;
void *addr;
IScriptObject *callback;
int refCount;
bool isUsed() const {
return obj_type != kScValUndefined;
}
ManagedObject() : obj_type(kScValUndefined), handle(0), addr(nullptr),
callback(nullptr), refCount(0) {}
ManagedObject(ScriptValueType theType, int32_t theHandle,
void *theAddr, IScriptObject *theCallback)
: obj_type(theType), handle(theHandle), addr(theAddr),
callback(theCallback), refCount(0) {
}
};
int objectCreationCounter; // used to do garbage collection every so often
int32_t nextHandle{}; // TODO: manage nextHandle's going over INT32_MAX !
std::queue<int32_t> available_ids;
std::vector<ManagedObject> objects;
std::unordered_map<void *, int32_t, Pointer_Hash> handleByAddress;
int Add(int handle, void *address, IScriptObject *callback, ScriptValueType obj_type);
int Remove(ManagedObject &o, bool force = false);
void RunGarbageCollection();
public:
int32_t AddRef(int32_t handle);
int CheckDispose(int32_t handle);
int32_t SubRef(int32_t handle);
int32_t AddressToHandle(void *addr);
void *HandleToAddress(int32_t handle);
ScriptValueType HandleToAddressAndManager(int32_t handle, void *&object, IScriptObject *&manager);
int RemoveObject(void *address);
void RunGarbageCollectionIfAppropriate();
int AddObject(void *address, IScriptObject *callback, ScriptValueType obj_type);
int AddUnserializedObject(void *address, IScriptObject *callback, ScriptValueType obj_type, int handle);
void WriteToDisk(Shared::Stream *out);
int ReadFromDisk(Shared::Stream *in, ICCObjectCollectionReader *reader);
void reset();
ManagedObjectPool();
void *disableDisposeForObject{ nullptr };
};
// Extreme(!!) verbosity managed memory pool log
#if DEBUG_MANAGED_OBJECTS
#define ManagedObjectLog(...) Debug::Printf(kDbgGroup_ManObj, kDbgMsg_Debug, __VA_ARGS__)
#else
#define ManagedObjectLog(...)
#endif
} // namespace AGS3
#endif
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