CheckedBoolean CopiedSpace::tryReallocateOversize(void** ptr, size_t oldSize, size_t newSize)
{
ASSERT(isOversize(oldSize) || isOversize(newSize));
ASSERT(newSize > oldSize);
void* oldPtr = *ptr;
void* newPtr = 0;
if (!tryAllocateOversize(newSize, &newPtr)) {
*ptr = 0;
return false;
}
memcpy(newPtr, oldPtr, oldSize);
CopiedBlock* oldBlock = CopiedSpace::blockFor(oldPtr);
if (oldBlock->isOversize()) {
if (oldBlock->isOld())
m_oldGen.oversizeBlocks.remove(oldBlock);
else
m_newGen.oversizeBlocks.remove(oldBlock);
m_blockSet.remove(oldBlock);
m_heap->blockAllocator().deallocateCustomSize(CopiedBlock::destroy(oldBlock));
}
*ptr = newPtr;
return true;
}
CheckedBoolean CopiedSpace::tryReallocateOversize(void** ptr, size_t oldSize, size_t newSize)
{
ASSERT(isOversize(oldSize) || isOversize(newSize));
ASSERT(newSize > oldSize);
void* oldPtr = *ptr;
void* newPtr = 0;
if (!tryAllocateOversize(newSize, &newPtr)) {
*ptr = 0;
return false;
}
memcpy(newPtr, oldPtr, oldSize);
CopiedBlock* oldBlock = CopiedSpace::blockFor(oldPtr);
if (oldBlock->isOversize()) {
// FIXME: Eagerly deallocating the old space block probably buys more confusion than
// value.
// https://bugs.webkit.org/show_bug.cgi?id=144750
if (oldBlock->isOld()) {
m_bytesRemovedFromOldSpaceDueToReallocation += oldBlock->size();
m_oldGen.oversizeBlocks.remove(oldBlock);
} else
m_newGen.oversizeBlocks.remove(oldBlock);
m_blockSet.remove(oldBlock);
CopiedBlock::destroy(*heap(), oldBlock);
}
*ptr = newPtr;
return true;
}
CheckedBoolean CopiedSpace::tryAllocateSlowCase(size_t bytes, void** outPtr)
{
if (isOversize(bytes))
return tryAllocateOversize(bytes, outPtr);
ASSERT(m_heap->vm()->currentThreadIsHoldingAPILock());
m_heap->didAllocate(m_allocator.currentCapacity());
allocateBlock();
*outPtr = m_allocator.forceAllocate(bytes);
return true;
}
CheckedBoolean CopiedSpace::tryAllocateSlowCase(size_t bytes, void** outPtr)
{
if (isOversize(bytes))
return tryAllocateOversize(bytes, outPtr);
m_heap->didAllocate(m_allocator.currentCapacity());
if (!addNewBlock()) {
*outPtr = 0;
return false;
}
*outPtr = m_allocator.allocate(bytes);
ASSERT(*outPtr);
return true;
}
CheckedBoolean CopiedSpace::tryReallocateOversize(void** ptr, size_t oldSize, size_t newSize)
{
ASSERT(isOversize(oldSize) || isOversize(newSize));
ASSERT(newSize > oldSize);
void* oldPtr = *ptr;
void* newPtr = 0;
if (!tryAllocateOversize(newSize, &newPtr)) {
*ptr = 0;
return false;
}
memcpy(newPtr, oldPtr, oldSize);
if (isOversize(oldSize)) {
CopiedBlock* oldBlock = oversizeBlockFor(oldPtr);
m_oversizeBlocks.remove(oldBlock);
oldBlock->m_allocation.deallocate();
}
*ptr = newPtr;
return true;
}
