factor/extra/tools/image-analyzer/code-heap-reader/code-heap-reader.factor

18 lines
587 B
Factor

USING: accessors alien.c-types classes.struct io kernel math
math.bitwise tools.image-analyzer.gc-info tools.image-analyzer.vm ;
IN: tools.image-analyzer.code-heap-reader
QUALIFIED: layouts
: free? ( code-block -- ? )
header>> 1 mask? ;
: size ( code-block -- n )
header>> dup 1 mask? [ 7 unmask ] [ 0xfffff8 mask ] if ;
: (read-code-block) ( -- code-block payload )
code-block [ read-struct ] [ heap-size ] bi over size swap - read ;
: read-code-block ( -- code-block )
tell-input (read-code-block) 2dup [ free? ] [ byte-array>gc-maps ] bi*
code-heap-node boa ;