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