! :folding=indent:collapseFolds=1:

! $Id$
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! Copyright (C) 2004 Slava Pestov.
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IN: profiler
USE: combinators
USE: kernel
USE: lists
USE: math
USE: prettyprint
USE: stack
USE: words
USE: vectors

: reset-call-counts ( -- )
    vocabs [ words [ 0 swap set-call-count ] each ] each ;

: sort-call-counts ( alist -- alist )
    [ swap cdr swap cdr > ] sort ;

: call-count, ( word -- )
    #! Add to constructing list if call count is non-zero.
    dup call-count dup 0 = [
        2drop
    ] [
        cons ,
    ] ifte ;

: call-counts ( -- alist )
    #! Push an alist of all word/call count pairs.
    [, [ call-count, ] each-word ,] sort-call-counts ;

: profile ( quot -- )
    #! Execute a quotation with the profiler enabled.
    reset-call-counts
    callstack vector-length profiling
    call
    f profiling
    call-counts [ . ] each ;