Comments on: [AS3] Truncating ByteArray Does Not Dispose Contents, Free Up Memory http://www.ghostwire.com/blog/archives/as3-truncating-bytearray-does-not-dispose-contents-free-up-memory/ Flash UI Components Thu, 02 Sep 2010 03:25:31 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: Henke37 http://www.ghostwire.com/blog/archives/as3-truncating-bytearray-does-not-dispose-contents-free-up-memory/comment-page-1/#comment-434 Henke37 Tue, 08 Dec 2009 19:41:28 +0000 http://www.ghostwire.com/blog/?p=1097#comment-434 I filled a bug report https://bugs.adobe.com/jira/browse/FP-3417 I filled a bug report https://bugs.adobe.com/jira/browse/FP-3417

]]> By: campbell http://www.ghostwire.com/blog/archives/as3-truncating-bytearray-does-not-dispose-contents-free-up-memory/comment-page-1/#comment-407 campbell Wed, 07 Oct 2009 11:24:41 +0000 http://www.ghostwire.com/blog/?p=1097#comment-407 Looking at Tamarin might give you an insight: check ByteArrayGlue.cpp Specifically the method shown below. void ByteArray::SetLength(uint32_t newLength) { if(m_subscriberRoot && m_length m_capacity) { if (!Grow(newLength)) { ThrowMemoryError(); return; } } m_length = newLength; NotifySubscribers(); } It never actually shrinks the memory allocated, just updates m_length internal variable, which would is bytearray.length in as3. So yeah a bit of a WTF issue there :) Looking at Tamarin might give you an insight: check ByteArrayGlue.cpp

Specifically the method shown below.

void ByteArray::SetLength(uint32_t newLength)
{
if(m_subscriberRoot && m_length m_capacity)
{
if (!Grow(newLength))
{
ThrowMemoryError();
return;
}
}
m_length = newLength;
NotifySubscribers();
}

It never actually shrinks the memory allocated, just updates m_length internal variable, which would is bytearray.length in as3.

So yeah a bit of a WTF issue there :)

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