Hi,
I am doing a matrix test, porting a matrix lib to JS
the code for operator "=" is very simple, just memcpy
Matrix4x4& Matrix4x4::operator = ( const Matrix4x4& mat )
{
const float* pRHSEntries = mat.GetEntries();
memcpy( (void*)m_pEntries, (const void*)pRHSEntries, sizeof(m_pEntries)
);
return *this;
}
And I bind this oeprator to "CopyFrom"
class_<Matrix4x4>("Matrix4x4")
.function("CopyFrom", &Matrix4x4::operator = )
In my JS test, I call CopyFrom in a loop for 1,000,000 times, like this:
var mat1 = new Module.Matrix4x4();
var mat2 = new Module.Matrix4x4();
for ( var i = 0; i < 1000000; ++i )
{
// just assign matrix value
mat2.CopyFrom( mat1 );
}
It will get the "Cannot enlarge memory arrays" error ( but calling only
100,000 times is ok )
Since there is not any memory allocation in my operator =, it simply gets
the pointers and does a memcpy
So I don't understand why the memory is insufficient...
Any idea ?
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