 math.statistics math.vectors memory namespaces prettyprint
 sequences sequences.generalizations sets sorting
 tools.profiler.sampling.private math.parser.private
-math.parser ;
+math.parser layouts ;
 FROM: sequences => change-nth ;
 FROM: assocs => change-at ;
 IN: tools.profiler.sampling

: foreign-thread-time ( -- n )
    most-recent-profile-data foreign-thread-time* ;

: collect-threads ( samples -- by-thread )
    [ sample-thread ] collect-by ;

: time-per-thread ( -- n )
    most-recent-profile-data collect-threads [ total-time* ] assoc-map ;

: leaf-callstack? ( callstack -- ? )
    [ ignore-word? ] all? ;

CONSTANT: zero-counts { 0 0 0 0 0 }

: sum-counts ( samples -- times )
    zero-counts [ sample-counts-slice v+ ] reduce ;

TUPLE: profile-node
    total-time gc-time jit-time foreign-time foreign-thread-time children
    depth ;

: <profile-node> ( times children depth -- node )
    [ 5 firstn [ samples>time ] 5 napply ] 2dip profile-node boa ;

: <profile-root-node> ( samples collector-quot -- node )
    [ sum-counts ] swap bi 0 <profile-node> ; inline

:: (collect-subtrees) ( samples child-quot -- children )
    samples [ sample-callstack leaf-callstack? not ] filter
    [ f ] [ child-quot call ] if-empty ; inline

:: collect-tops ( samples depth -- node )
    samples [ unclip-callstack ] collect-pairs [
        [ sum-counts ]
        [ [ depth 1 + collect-tops ] (collect-subtrees) ] bi depth <profile-node>
    ] assoc-map ;

: redundant-root-node? ( assoc -- ? )

: (profile.) ( nodes depth -- )
    [ by-total-time ] dip '[ _ (profile-node.) ] assoc-each ;

PRIVATE>

: profile-heading. ( -- )
    "depth   time ms  GC %  JIT %  FFI %   FT %" print ;
   ! NNNN XXXXXXX.X XXXX.X XXXX.X XXXX.X XXXX.X | | foo
