void LookupCacheBuilder::cleanup()
{
if (caches) {
mmfx_delete_array(caches);
caches = NULL;
}
}
bool ByteArray::Grow(uint32_t minimumCapacity)
{
if (minimumCapacity > m_capacity)
{
uint32_t newCapacity = m_capacity << 1;
if (newCapacity < minimumCapacity)
{
newCapacity = minimumCapacity;
}
if (newCapacity < kGrowthIncr)
{
newCapacity = kGrowthIncr;
}
U8 *newArray = mmfx_new_array(uint8_t, newCapacity);
if (!newArray)
{
return false;
}
if (m_array)
{
VMPI_memcpy(newArray, m_array, m_length);
mmfx_delete_array(m_array);
}
VMPI_memset(newArray+m_length, 0, newCapacity-m_capacity);
m_array = newArray;
m_capacity = newCapacity;
NotifySubscribers();
}
return true;
}
String* DataInput::ReadUTFBytes(uint32_t length)
{
CheckEOF(length);
char *buffer = mmfx_new_array_opt( char, length+1, MMgc::kCanFail );
if (!buffer) {
ThrowMemoryError();
}
Read(buffer, length);
buffer[length] = 0;
// Since this is supposed to read UTF8 into a string, it really should ignore the UTF8 BOM that
// might reasonably occur at the head of the data.
char* utf8chars = buffer;
if (length >= 3 && (unsigned char)buffer[0] == 0xEF && (unsigned char)buffer[1] == 0xBB && (unsigned char)buffer[2] == 0xBF)
{
utf8chars += 3;
}
String *out = m_toplevel->core()->newStringUTF8(utf8chars);
mmfx_delete_array( buffer );
return out;
}
ByteArray::~ByteArray()
{
m_subscriberRoot = NULL;
if (m_array)
{
mmfx_delete_array(m_array);
m_array = NULL;
}
m_capacity = 0;
m_length = 0;
}
// The cache structure is expected to be small in the normal case, so use a
// linear list. For some programs, notably classical JS programs, it may however
// be larger, and we may need a more sophisticated structure.
uint32_t LookupCacheBuilder::allocateCacheSlot(uint32_t imm30)
{
for ( int i=0 ; i < next_cache ; i++ )
if (caches[i] == imm30)
return i;
if (next_cache == num_caches) {
uint32_t newcap = num_caches + num_caches/2 + 5; // 0 5 12 23 39 66 ...
uint32_t* new_cache = mmfx_new_array(uint32_t, newcap);
if (num_caches > 0) {
VMPI_memcpy(new_cache, caches, sizeof(uint32_t)*num_caches);
mmfx_delete_array(caches);
}
caches = new_cache;
num_caches = newcap;
}
caches[next_cache] = imm30;
return next_cache++;
}