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;;; swank-sprof.lisp
;;
;; Authors: Juho Snellman
;;
;; License: MIT
;;
(in-package :swank)
#+sbcl
(eval-when (:compile-toplevel :load-toplevel :execute)
(require :sb-sprof))
#+sbcl(progn
(defvar *call-graph* nil)
(defvar *node-numbers* nil)
(defvar *number-nodes* nil)
(defun frame-name (name)
(if (consp name)
(case (first name)
((sb-c::xep sb-c::tl-xep
sb-c::&more-processor
sb-c::top-level-form
sb-c::&optional-processor)
(second name))
(sb-pcl::fast-method
(cdr name))
((flet labels lambda)
(let* ((in (member :in name)))
(if (stringp (cadr in))
(append (ldiff name in) (cddr in))
name)))
(t
name))
name))
(defun pretty-name (name)
(let ((*package* (find-package :common-lisp-user))
(*print-right-margin* most-positive-fixnum))
(format nil "~S" (frame-name name))))
(defun samples-percent (count)
(sb-sprof::samples-percent *call-graph* count))
(defun node-values (node)
(values (pretty-name (sb-sprof::node-name node))
(samples-percent (sb-sprof::node-count node))
(samples-percent (sb-sprof::node-accrued-count node))))
(defun filter-swank-nodes (nodes)
(let ((swank-packages (load-time-value
(mapcar #'find-package
'(swank swank/rpc swank/mop
swank/match swank/backend)))))
(remove-if (lambda (node)
(let ((name (sb-sprof::node-name node)))
(and (symbolp name)
(member (symbol-package name) swank-packages
:test #'eq))))
nodes)))
(defun serialize-call-graph (&key exclude-swank)
(let ((nodes (sb-sprof::call-graph-flat-nodes *call-graph*)))
(when exclude-swank
(setf nodes (filter-swank-nodes nodes)))
(setf nodes (sort (copy-list nodes) #'>
;; :key #'sb-sprof::node-count)))
:key #'sb-sprof::node-accrued-count))
(setf *number-nodes* (make-hash-table))
(setf *node-numbers* (make-hash-table))
(loop for node in nodes
for i from 1
with total = 0
collect (multiple-value-bind (name self cumulative)
(node-values node)
(setf (gethash node *node-numbers*) i
(gethash i *number-nodes*) node)
(incf total self)
(list i name self cumulative total)) into list
finally (return
(let ((rest (- 100 total)))
(return (append list
`((nil "Elsewhere" ,rest nil nil)))))))))
(defslimefun swank-sprof-get-call-graph (&key exclude-swank)
(when (setf *call-graph* (sb-sprof:report :type nil))
(serialize-call-graph :exclude-swank exclude-swank)))
(defslimefun swank-sprof-expand-node (index)
(let* ((node (gethash index *number-nodes*)))
(labels ((caller-count (v)
(loop for e in (sb-sprof::vertex-edges v) do
(when (eq (sb-sprof::edge-vertex e) node)
(return-from caller-count (sb-sprof::call-count e))))
0)
(serialize-node (node count)
(etypecase node
(sb-sprof::cycle
(list (sb-sprof::cycle-index node)
(sb-sprof::cycle-name node)
(samples-percent count)))
(sb-sprof::node
(let ((name (node-values node)))
(list (gethash node *node-numbers*)
name
(samples-percent count)))))))
(list :callers (loop for node in
(sort (copy-list (sb-sprof::node-callers node)) #'>
:key #'caller-count)
collect (serialize-node node
(caller-count node)))
:calls (let ((edges (sort (copy-list (sb-sprof::vertex-edges node))
#'>
:key #'sb-sprof::call-count)))
(loop for edge in edges
collect
(serialize-node (sb-sprof::edge-vertex edge)
(sb-sprof::call-count edge))))))))
(defslimefun swank-sprof-disassemble (index)
(let* ((node (gethash index *number-nodes*))
(debug-info (sb-sprof::node-debug-info node)))
(with-output-to-string (s)
(typecase debug-info
(sb-impl::code-component
(sb-disassem::disassemble-memory (sb-vm::code-instructions debug-info)
(sb-vm::%code-code-size debug-info)
:stream s))
(sb-di::compiled-debug-fun
(let ((component (sb-di::compiled-debug-fun-component debug-info)))
(sb-disassem::disassemble-code-component component :stream s)))
(t `(:error "No disassembly available"))))))
(defslimefun swank-sprof-source-location (index)
(let* ((node (gethash index *number-nodes*))
(debug-info (sb-sprof::node-debug-info node)))
(or (when (typep debug-info 'sb-di::compiled-debug-fun)
(let* ((component (sb-di::compiled-debug-fun-component debug-info))
(function (sb-kernel::%code-entry-points component)))
(when function
(find-source-location function))))
`(:error "No source location available"))))
(defslimefun swank-sprof-start (&key (mode :cpu))
(sb-sprof:start-profiling :mode mode))
(defslimefun swank-sprof-stop ()
(sb-sprof:stop-profiling))
)
(provide :swank-sprof)
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