//
// bit 0 is the least significative bit
// The stream encodes the first come bit in the least significant bit of each byte
//
void BitStreamWriter::Write( size_t data, int count )
{
_ASSERTE( count > 0 );
_ASSERT( count <= sizeof( size_t )*8 );
// Increment it now as we change count later on
m_BitCount += count;
if( count > m_FreeBitsInCurrentSlot )
{
if( m_FreeBitsInCurrentSlot > 0 )
{
WriteInCurrentSlot( data, m_FreeBitsInCurrentSlot );
count -= m_FreeBitsInCurrentSlot;
data >>= m_FreeBitsInCurrentSlot;
}
_ASSERTE( count > 0 );
// Initialize the next slot
if( ++m_pCurrentSlot >= m_OutOfBlockSlot )
{
// Get a new memory block
AllocMemoryBlock();
}
InitCurrentSlot();
// Write the remainder
WriteInCurrentSlot( data, count );
m_FreeBitsInCurrentSlot -= count;
}
BitStreamWriter::BitStreamWriter( IJitAllocator* pAllocator )
{
m_pAllocator = pAllocator;
m_BitCount = 0;
#ifdef _DEBUG
m_MemoryBlocksCount = 0;
#endif
// We are going to need at least one memory block, so we pre-allocate it
AllocMemoryBlock();
InitCurrentSlot();
}
DBStack::DBStack(const uptr size)
{
AllocMemoryBlock(size);
}
