PRBool nsVoidArray::GrowArrayBy(PRInt32 aGrowBy)
{
// We have to grow the array. Grow by kMinGrowArrayBy slots if we're
// smaller than kLinearThreshold bytes, or a power of two if we're
// larger. This is much more efficient with most memory allocators,
// especially if it's very large, or of the allocator is binned.
if (aGrowBy < kMinGrowArrayBy)
aGrowBy = kMinGrowArrayBy;
PRUint32 newCapacity = GetArraySize() + aGrowBy; // Minimum increase
PRUint32 newSize = SIZEOF_IMPL(newCapacity);
if (newSize >= (PRUint32) kLinearThreshold)
{
// newCount includes enough space for at least kMinGrowArrayBy new
// slots. Select the next power-of-two size in bytes above or
// equal to that.
// Also, limit the increase in size to about a VM page or two.
if (GetArraySize() >= kMaxGrowArrayBy)
{
newCapacity = GetArraySize() + PR_MAX(kMaxGrowArrayBy,aGrowBy);
newSize = SIZEOF_IMPL(newCapacity);
}
else
{
PR_CEILING_LOG2(newSize, newSize);
newCapacity = CAPACITYOF_IMPL(PR_BIT(newSize));
}
}
// frees old mImpl IF this succeeds
if (!SizeTo(newCapacity))
return PR_FALSE;
return PR_TRUE;
}
bool nsVoidArray::GrowArrayBy(int32_t aGrowBy)
{
// We have to grow the array. Grow by kMinGrowArrayBy slots if we're
// smaller than kLinearThreshold bytes, or a power of two if we're
// larger. This is much more efficient with most memory allocators,
// especially if it's very large, or of the allocator is binned.
if (aGrowBy < kMinGrowArrayBy)
aGrowBy = kMinGrowArrayBy;
uint32_t newCapacity = GetArraySize() + aGrowBy; // Minimum increase
uint32_t newSize = SIZEOF_IMPL(newCapacity);
if (newSize >= (uint32_t) kLinearThreshold)
{
// newCount includes enough space for at least kMinGrowArrayBy new
// slots. Select the next power-of-two size in bytes above or
// equal to that.
// Also, limit the increase in size to about a VM page or two.
if (GetArraySize() >= kMaxGrowArrayBy)
{
newCapacity = GetArraySize() + XPCOM_MAX(kMaxGrowArrayBy,aGrowBy);
newSize = SIZEOF_IMPL(newCapacity);
}
else
{
newSize = mozilla::CeilingLog2(newSize);
newCapacity = CAPACITYOF_IMPL(1u << newSize);
}
}
// frees old mImpl IF this succeeds
if (!SizeTo(newCapacity))
return false;
return true;
}
FormatResult HTMLBodyDisplay::FormatForViewport (
WebRect* viewportRect,
WEBC_BOOL hscrollPresent,
WEBC_BOOL vscrollPresent
)
{
if (Width() != viewportRect->Width())
{
SizeTo(viewportRect->Width(), viewportRect->Height());
SetParentStyleModified();
}
else if (Height() != viewportRect->Height())
{
SizeTo(viewportRect->Width(), viewportRect->Height());
SetPosChildStyleModified();
}
FormatIfNecessary();
CSSPropertyValue overflowValue;
if (mpHtmlElement->GetStyleFromCSS(CSS_PROPERTY_OVERFLOW, &overflowValue) == CSS_VALUE_SPECIFIED)
{
if (CSS_OVERFLOW_HIDDEN == overflowValue.overflow)
{
return (DISPLAY_FORMAT_SUCCESS);
}
}
#if (WEBC_SUPPORT_SCROLLBARS)
WebRect bounds;
GetBounds(&bounds);
if (bounds.Height() > viewportRect->Height() && !vscrollPresent)
{
return (DISPLAY_FORMAT_NEEDS_VSCROLL);
}
if (bounds.Width() > viewportRect->Width() && !hscrollPresent)
{
return (DISPLAY_FORMAT_NEEDS_HSCROLL);
}
#endif
return (DISPLAY_FORMAT_SUCCESS);
}
nsVoidArray::nsVoidArray(PRInt32 aCount)
: mImpl(nsnull)
{
MOZ_COUNT_CTOR(nsVoidArray);
#if DEBUG_VOIDARRAY
mMaxCount = 0;
mMaxSize = 0;
mIsAuto = PR_FALSE;
MaxElements[0]++;
#endif
SizeTo(aCount);
}
nsVoidArray::nsVoidArray(int32_t aCount)
: mImpl(nullptr)
{
MOZ_COUNT_CTOR(nsVoidArray);
#if DEBUG_VOIDARRAY
mMaxCount = 0;
mMaxSize = 0;
mIsAuto = false;
MaxElements[0]++;
#endif
SizeTo(aCount);
}
void nsVoidArray::Clear()
{
if (mImpl)
{
mImpl->mCount = 0;
// We don't have to free on Clear, but if we have a built-in buffer,
// it's worth considering.
if (HasAutoBuffer() && IsArrayOwner() &&
GetArraySize() > kAutoClearCompactSizeFactor * kAutoBufSize) {
SizeTo(0);
}
}
}
void nsVoidArray::Compact()
{
if (mImpl)
{
// XXX NOTE: this is quite inefficient in many cases if we're only
// compacting by a little, but some callers care more about memory use.
int32_t count = Count();
if (GetArraySize() > count)
{
SizeTo(Count());
}
}
}
void
PQP_CollideResult::Add(int a, int b)
{
if (num_pairs >= num_pairs_alloced)
{
// allocate more
SizeTo(num_pairs_alloced*2+8);
}
// now proceed as usual
pairs[num_pairs].id1 = a;
pairs[num_pairs].id2 = b;
num_pairs++;
}
nsVoidArray& nsVoidArray::operator=(const nsVoidArray& other)
{
PRInt32 otherCount = other.Count();
PRInt32 maxCount = GetArraySize();
if (otherCount)
{
if (otherCount > maxCount)
{
// frees old mImpl IF this succeeds
if (!GrowArrayBy(otherCount-maxCount))
return *this; // XXX The allocation failed - don't do anything
memcpy(mImpl->mArray, other.mImpl->mArray, otherCount * sizeof(mImpl->mArray[0]));
mImpl->mCount = otherCount;
}
else
{
// the old array can hold the new array
memcpy(mImpl->mArray, other.mImpl->mArray, otherCount * sizeof(mImpl->mArray[0]));
mImpl->mCount = otherCount;
// if it shrank a lot, compact it anyways
if ((otherCount*2) < maxCount && maxCount > 100)
{
Compact(); // shrank by at least 50 entries
}
}
#if DEBUG_VOIDARRAY
if (mImpl->mCount > mMaxCount &&
mImpl->mCount < (PRInt32)(sizeof(MaxElements)/sizeof(MaxElements[0])))
{
MaxElements[mImpl->mCount]++;
MaxElements[mMaxCount]--;
mMaxCount = mImpl->mCount;
}
#endif
}
else
{
// Why do we drop the buffer here when we don't in Clear()?
SizeTo(0);
}
return *this;
}
nsSmallVoidArray&
nsSmallVoidArray::operator=(nsSmallVoidArray& other)
{
PRInt32 count = other.Count();
switch (count) {
case 0:
Clear();
break;
case 1:
Clear();
AppendElement(other.ElementAt(0));
break;
default:
if (GetArraySize() >= count || SizeTo(count)) {
*AsArray() = *other.AsArray();
}
}
return *this;
}
void nsVoidArray::Compact()
{
if (mImpl)
{
// XXX NOTE: this is quite inefficient in many cases if we're only
// compacting by a little, but some callers care more about memory use.
PRInt32 count = Count();
if (HasAutoBuffer() && count <= kAutoBufSize)
{
Impl* oldImpl = mImpl;
static_cast<nsAutoVoidArray*>(this)->ResetToAutoBuffer();
memcpy(mImpl->mArray, oldImpl->mArray,
count * sizeof(mImpl->mArray[0]));
free(reinterpret_cast<char *>(oldImpl));
}
else if (GetArraySize() > count)
{
SizeTo(Count());
}
}
}
ndata::ndata(nnode *t,int special):nnode(t){
// printf("New NData\n");
dat=NULL;
siz=asiz=canfree=0;
alist=new CList(0);
type=0;
// printf("Special %d\n",special);
if (special){
nplace *np1=new nplace(10);
// printf("dat=%x\n",dat);
SizeTo(32);
// printf("dat=%x\n",dat);
dat[0]=10;
dat[1]=10;
siz=2;
// printf("Attaching\n");
Attach(np1,0);
// printf("attach1\n");
Attach(new nplace(10),1);
}
// printf("Complete\n");
}
int ndata::Insert(const char *dt,int sz,int pl){
if (pl<0) return 0;
if (pl>=siz) return 0;
for (int i=0;i<alist->Num();i++){
nplace *np=(nplace*)alist->Item(i);
if (np->ofs>=pl) np->ofs+=sz;
}
SizeTo(sz+siz);
for (int i=siz-1;i>=pl;i--){
dat[i+sz]=dat[i];
}
memcpy(dat+pl,dt,sz);
siz+=sz;
for (int i=0;i<sz;i++){
char c=dat[pl+i];
if (c==10 || c==13){
Attach(new nplace(10),pl+i);
}
}
// printf("Got %d (%d,%d)\n",dt[0],siz,sz);
return sz;
}
