PyrObject *PyrGC::NewFrame(size_t inNumBytes, long inFlags, long inFormat, bool inAccount)
{
PyrObject *obj = NULL;
#if SANITYCHECK
SanityCheck();
#endif
// obtain size info
int32 alignedSize = (inNumBytes + kAlignMask) & ~kAlignMask; // 16 byte align
int32 numSlots = alignedSize / sizeof(PyrSlot);
numSlots = numSlots < 1 ? 1 : numSlots;
int32 sizeclass = LOG2CEIL(numSlots);
sizeclass = sc_min(sizeclass, kNumGCSizeClasses-1);
int32 credit = 1L << sizeclass;
mAllocTotal += credit;
mNumAllocs++;
if (inAccount) {
mNumToScan += credit;
if (mNumToScan >= kScanThreshold) {
Collect();
}
}
GCSet *gcs = mSets + sizeclass;
obj = (PyrObject*)gcs->mFree;
if (!IsMarker(obj)) {
// from free list
gcs->mFree = obj->next;
} else {
if (sizeclass > kMaxPoolSet) {
SweepBigObjects();
int32 allocSize = sizeof(PyrObjectHdr) + (sizeof(PyrSlot) << sizeclass);
obj = (PyrObject*)mPool->Alloc(allocSize);
} else {
int32 allocSize = sizeof(PyrObjectHdr) + (sizeof(PyrSlot) << sizeclass);
obj = (PyrObject*)mNewPool.Alloc(allocSize);
}
if (!obj) {
post("Frame alloc failed. size = %d\n", inNumBytes);
MEMFAILED;
}
DLInsertAfter(&gcs->mWhite, obj);
}
obj->obj_sizeclass = sizeclass;
obj->obj_format = inFormat;
obj->obj_flags = inFlags;
obj->size = 0;
obj->classptr = class_frame;
obj->gc_color = mWhiteColor;
#if SANITYCHECK
SanityCheck();
#endif
return obj;
}
PyrObject *PyrGC::NewFinalizer(ObjFuncPtr finalizeFunc, PyrObject *inObject, bool inCollect)
{
PyrObject *obj = NULL;
#ifdef GC_SANITYCHECK
SanityCheck();
#endif
// obtain size info
int32 sizeclass = 1;
int32 credit = 1L << sizeclass;
mNumToScan += credit;
mAllocTotal += credit;
mNumAllocs++;
if (inCollect && mNumToScan >= kScanThreshold) {
Collect();
}
GCSet *gcs = mSets + kFinalizerSet;
obj = (PyrObject*)gcs->mFree;
if (!IsMarker(obj)) {
// from free list
gcs->mFree = obj->next;
} else {
if (sizeclass > kMaxPoolSet) {
SweepBigObjects();
int32 allocSize = sizeof(PyrObjectHdr) + (sizeof(PyrSlot) << sizeclass);
obj = (PyrObject*)mPool->Alloc(allocSize);
} else {
int32 allocSize = sizeof(PyrObjectHdr) + (sizeof(PyrSlot) << sizeclass);
obj = (PyrObject*)mNewPool.Alloc(allocSize);
}
if (!obj) {
post("Finalizer alloc failed.\n");
MEMFAILED;
}
DLInsertAfter(&gcs->mWhite, obj);
}
obj->obj_sizeclass = sizeclass;
obj->obj_format = obj_slot;
obj->obj_flags = 0;
obj->size = 2;
obj->classptr = class_finalizer;
obj->gc_color = mWhiteColor;
SetPtr(obj->slots+0, (void*)finalizeFunc);
SetObject(obj->slots+1, inObject);
#ifdef GC_SANITYCHECK
SanityCheck();
#endif
return obj;
}
void PyrGC::ToGrey2(PyrObjectHdr* obj)
{
/* move obj from white to grey */
/* link around object */
DLRemove(obj);
/* link in new place */
DLInsertAfter(&mGrey, obj);
/* set grey list pointer to obj */
obj->gc_color = mGreyColor;
mNumGrey ++ ;
}