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;
}
void ByteArray::Push(const U8 *data, uint32_t count)
{
Grow(m_length + count);
VMPI_memcpy(m_array + m_length, data, count);
m_length += count;
NotifySubscribers();
}
void FrameState::init(FrameState* other)
{
AvmAssert(other->verifier == this->verifier);
scopeDepth = other->scopeDepth;
stackDepth = other->stackDepth;
withBase = other->withBase;
VMPI_memcpy(locals, other->locals, verifier->frameSize*sizeof(Value));
}
void BigInteger::setFromBigInteger(const BigInteger* from, int32 offset, int32 amount)
{
numWords = amount;
AvmAssert(numWords <= kMaxBigIntegerBufferSize);
VMPI_memcpy( (byte*)wordBuffer,
(byte*)&(from->wordBuffer[offset]),
amount*sizeof(uint32));
}
void ByteArrayFile::Write(const void *buffer, uint32_t count)
{
if (m_filePointer+count >= m_length) {
Grow(m_filePointer+count);
m_length = m_filePointer+count;
}
VMPI_memcpy(m_array+m_filePointer, buffer, count);
m_filePointer += count;
}
void ByteArrayFile::Read(void *buffer, uint32_t count)
{
CheckEOF(count);
if (count > 0)
{
VMPI_memcpy(buffer, m_array+m_filePointer, count);
m_filePointer += count;
}
}
void SocketFile::WriteOutCache(const void *data, uint32_t count)
{
if (m_outWritePos + count >= m_outCache.GetLength())
{
m_outCache.SetLength(m_outWritePos + count);
// m_outCache.Grow(m_outCache.GetLength());
}
VMPI_memcpy(m_outCache.GetBuffer() + m_outWritePos, data, count);
m_outWritePos += count;
}
void SocketFile::WriteInCache(const void *data, uint32_t length)
{
if (m_inWritePos + length >= m_inCache.GetLength())
{
m_inCache.SetLength(m_inWritePos + length);
// m_outCache.Grow(m_outCache.GetLength());
}
VMPI_memcpy(m_inCache.GetBuffer() + m_inWritePos, data, length);
m_inWritePos += length;
}
wchar* StringBuilder::copyInto(wchar* buf, SBChunk* c)
{
if (c == NULL)
return buf;
wchar *p = buf;
if (c->next != NULL)
p = copyInto(buf, c->next);
VMPI_memcpy(p, c->data, SBChunk::chunksize*sizeof(wchar));
return p+SBChunk::chunksize;
}
const wchar* AvmplusHostContext::readFileForEval(const wchar* basename, const wchar* filename, uint32_t* inputlen)
{
// FIXME: the mismatch between what eval needs and what the core API delivers is just stunning.
if (nextstring == sizeof(strings)/sizeof(strings[0]))
throwInternalError("includes too deeply nested");
StUTF16String str(core->readFileForEval(core->newStringUTF16(basename), core->newStringUTF16(filename))); // return value is already NUL-terminated
wchar *s = new wchar[str.length()];
VMPI_memcpy(s, str.c_str(), str.length()*sizeof(wchar));
*inputlen = str.length();
strings[nextstring++] = s;
return s;
}
Str* StringBuilder::str()
{
if (chunk->next == NULL)
return allocator->compiler->intern(chunk->data, len);
wchar* buf = new wchar[len];
wchar* p = copyInto(buf, chunk->next);
VMPI_memcpy(p, chunk->data, nextchar*sizeof(wchar));
Str* result = allocator->compiler->intern(buf, len);
delete [] buf;
return result;
}
void SocketFile::ReadOutCache(void *data, uint32_t length)
{
CheckEOF(length);
if (length > 0)
{
VMPI_memcpy(data, m_outCache.GetBuffer() + m_outReadPos, length);
m_outReadPos += length;
}
//if (0 == OutCacheBytesAvailable())
//{
// m_outReadPos = m_outWritePos = 0;
//}
}
void SocketFile::ReadInCache(void *data, uint32_t count)
{
CheckEOF(count);
if (count > 0)
{
AvmAssert(m_inReadPos+count<=m_inCache.GetLength());
VMPI_memcpy(data, m_inCache.GetBuffer() + m_inReadPos, count);
m_inReadPos += count;
}
//if (0 == InCacheBytesAvailable())
//{
// m_inReadPos = m_inWritePos = 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++;
}
ByteArray::ByteArray(const ByteArray &lhs)
// GCC will warn if we don't explicitly init GlobalMemoryProvider,
// even though it has no fields or ctor... sigh
: GlobalMemoryProvider()
{
m_subscriberRoot = NULL;
m_array = mmfx_new_array(uint8_t, lhs.m_length);
if (!m_array)
{
ThrowMemoryError();
return;
}
m_capacity = lhs.m_length;
m_length = lhs.m_length;
VMPI_memcpy(m_array, lhs.m_array, m_length);
}
Atom DomainObject::loadBytes(ByteArrayObject *b)
{
AvmCore* core = this->core();
if (!b)
toplevel()->throwTypeError(kNullArgumentError, core->toErrorString("bytes"));
ShellCodeContext* codeContext = new (core->GetGC()) ShellCodeContext();
codeContext->m_domainEnv = domainEnv;
// parse new bytecode
size_t len = b->get_length();
ScriptBuffer code = core->newScriptBuffer(len);
VMPI_memcpy(code.getBuffer(), &b->GetByteArray()[0], len);
Toplevel *toplevel = domainToplevel;
return core->handleActionBlock(code, 0,
domainEnv,
toplevel,
NULL, codeContext);
}
void StringBuilder::append(const wchar* ptr, const wchar* lim)
{
if (lim == NULL) {
lim = ptr;
while (*lim != 0)
lim++;
}
while (ptr < lim) {
uint32_t avail = SBChunk::chunksize - nextchar;
uint32_t need = uint32_t(lim - ptr);
uint32_t k = min(need, avail);
VMPI_memcpy(chunk->data + nextchar, ptr, k*sizeof(wchar));
ptr += k;
nextchar += k;
len += k;
if (ptr < lim) {
pushChunk();
nextchar = 0;
}
}
}