CheckedBoolean CopiedSpace::tryReallocate(void** ptr, size_t oldSize, size_t newSize)
{
if (oldSize >= newSize)
return true;
void* oldPtr = *ptr;
ASSERT(!m_heap->globalData()->isInitializingObject());
if (isOversize(oldSize) || isOversize(newSize))
return tryReallocateOversize(ptr, oldSize, newSize);
if (m_allocator.wasLastAllocation(oldPtr, oldSize)) {
size_t delta = newSize - oldSize;
if (m_allocator.fitsInCurrentBlock(delta)) {
(void)m_allocator.allocate(delta);
return true;
}
}
void* result = 0;
if (!tryAllocate(newSize, &result)) {
*ptr = 0;
return false;
}
memcpy(result, oldPtr, oldSize);
*ptr = result;
return true;
}
CheckedBoolean CopiedSpace::tryReallocate(void** ptr, size_t oldSize, size_t newSize)
{
if (oldSize >= newSize)
return true;
void* oldPtr = *ptr;
ASSERT(!m_heap->vm()->isInitializingObject());
if (CopiedSpace::blockFor(oldPtr)->isOversize() || isOversize(newSize))
return tryReallocateOversize(ptr, oldSize, newSize);
if (m_allocator.tryReallocate(oldPtr, oldSize, newSize))
return true;
void* result = 0;
if (!tryAllocate(newSize, &result)) {
*ptr = 0;
return false;
}
memcpy(result, oldPtr, oldSize);
*ptr = result;
return true;
}
