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/*
SuperCollider real time audio synthesis system
Copyright (c) 2002 James McCartney. All rights reserved.
http://www.audiosynth.com
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
*/
/*
An object archiving system for SuperCollider.
*/
#ifndef _PyrDeepFreezer_
#define _PyrDeepFreezer_
#include "PyrObject.h"
#include "SC_AllocPool.h"
#include "PyrKernel.h"
#include "PyrPrimitive.h"
#include "VMGlobals.h"
#include "GC.h"
const int32 kDeepFreezerObjectArrayInitialCapacity = 32;
class PyrDeepFreezer
{
public:
PyrDeepFreezer(VMGlobals *inG)
: g(inG), objectArray(initialObjectArray), numObjects(0),
objectArrayCapacity( kDeepCopierObjectArrayInitialCapacity )
{
}
~PyrDeepFreezer()
{
if (objectArrayCapacity > kDeepCopierObjectArrayInitialCapacity) {
g->allocPool->Free(objectArray);
}
}
long doDeepFreeze(PyrSlot *objectSlot)
{
long err = errNone;
try {
if (IsObj(objectSlot)) {
constructObjectArray(objectSlot->uo);
for (int i=0; i<numObjects; ++i) {
g->gc->BecomePermanent( objectArray[i] );
}
}
} catch (std::exception &ex) {
error(ex.what());
err = errFailed;
}
return err;
}
private:
void recurse(PyrObject *obj, int n)
{
PyrSlot *slot = obj->slots;
for (int i=0; i<n; ++i, ++slot) {
if (IsObj(slot)) constructObjectArray(slot->uo);
}
}
void growObjectArray()
{
int32 newObjectArrayCapacity = objectArrayCapacity << 1;
int32 newSize = newObjectArrayCapacity * sizeof(PyrObject*);
PyrObject** newArray = (PyrObject**)g->allocPool->Alloc(newSize);
memcpy(newArray, objectArray, numObjects * sizeof(PyrObject*));
if (objectArrayCapacity > kDeepCopierObjectArrayInitialCapacity) {
g->allocPool->Free(objectArray);
}
objectArrayCapacity = newObjectArrayCapacity;
objectArray = newArray;
}
void putObject(PyrObject *obj)
{
obj->SetMark();
obj->scratch1 = numObjects;
// expand array if needed
if (numObjects >= objectArrayCapacity) growObjectArray();
// add to array
objectArray[numObjects++] = obj;
}
void constructObjectArray(PyrObject *obj)
{
if (obj->IsPermanent()) return;
if (!obj->IsMarked()) {
if (isKindOf(obj, class_process)) {
throw std::runtime_error("cannot freeze Process.\n");
} else if (isKindOf(obj, s_interpreter->u.classobj)) {
throw std::runtime_error("cannot freeze Interpreter.\n");
} else if (isKindOf(obj, class_rawarray)) {
putObject(obj);
} else if (isKindOf(obj, class_array)) {
putObject(obj);
recurse(obj, obj->size);
} else if (isKindOf(obj, class_func)) {
if (NotNil(&((PyrClosure*)obj)->block.uoblk->context)) {
throw std::runtime_error("open Function can not be frozen.\n");
}
putObject(obj);
recurse(obj, obj->size);
} else if (isKindOf(obj, class_method)) {
throw std::runtime_error("cannot freeze Methods.\n");
} else if (isKindOf(obj, class_thread)) {
throw std::runtime_error("cannot freeze Threads.\n");
} else if (isKindOf(obj, class_frame)) {
throw std::runtime_error("cannot freeze Frames.\n");
} else {
putObject(obj);
recurse(obj, obj->size);
}
}
}
VMGlobals *g;
PyrObject **objectArray;
int32 numObjects;
int32 objectArrayCapacity;
PyrObject *initialObjectArray[kDeepCopierObjectArrayInitialCapacity];
};
/*
SuperCollider real time audio synthesis system
Copyright (c) 2002 James McCartney. All rights reserved.
http://www.audiosynth.com
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
*/
/*
An object archiving system for SuperCollider.
*/
#endif
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