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-- Copyright 2011 the V8 project authors. All rights reserved.
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions are
-- met:
--
-- * Redistributions of source code must retain the above copyright
-- notice, this list of conditions and the following disclaimer.
-- * Redistributions in binary form must reproduce the above
-- copyright notice, this list of conditions and the following
-- disclaimer in the documentation and/or other materials provided
-- with the distribution.
-- * Neither the name of Google Inc. nor the names of its
-- contributors may be used to endorse or promote products derived
-- from this software without specific prior written permission.
--
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-- "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-- OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-- LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-- DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-- THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-- OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-- This is an auxiliary tool that reads gccauses file generated by
-- gcmole.lua and prints tree of the calls that can potentially cause a GC
-- inside a given function.
--
-- Usage: lua tools/gcmole/gccause.lua <function-name-pattern>
--
assert(loadfile "gccauses")()
local P = ...
local T = {}
local function TrackCause(name, lvl)
io.write((" "):rep(lvl or 0), name, "\n")
if GC[name] then
local causes = GC[name]
for i = 1, #causes do
local f = causes[i]
if not T[f] then
T[f] = true
TrackCause(f, (lvl or 0) + 1)
end
if f == '<GC>' then break end
end
end
end
for name, _ in pairs(GC) do
if name:match(P) then
T = {}
TrackCause(name)
end
end