void
nsTArray_base::ShrinkCapacity(size_type elemSize) {
if (mHdr == &sEmptyHdr || UsesAutoArrayBuffer())
return;
if (mHdr->mLength >= mHdr->mCapacity) // should never be greater than...
return;
size_type length = Length();
if (IsAutoArray() && GetAutoArrayBuffer()->mCapacity >= length) {
Header* header = GetAutoArrayBuffer();
// Copy data, but don't copy the header to avoid overwriting mCapacity
header->mLength = length;
memcpy(header + 1, mHdr + 1, length * elemSize);
NS_Free(mHdr);
mHdr = header;
return;
}
if (length == 0) {
NS_ASSERTION(!IsAutoArray(), "autoarray should have fit 0 elements");
NS_Free(mHdr);
mHdr = &sEmptyHdr;
return;
}
size_type size = sizeof(Header) + length * elemSize;
void *ptr = NS_Realloc(mHdr, size);
if (!ptr)
return;
mHdr = static_cast<Header*>(ptr);
mHdr->mCapacity = length;
}
nsMemoryImpl::Realloc(void* aPtr, size_t aSize)
{
return NS_Realloc(aPtr, aSize);
}
nsMemoryImpl::Realloc(void* ptr, size_t size)
{
return NS_Realloc(ptr, size);
}