72f7d9a294
Reason for revert:
[Sheriff] Speculative revert for some flakes on the waterfall:
https://build.chromium.org/p/client.v8/builders/V8%20Mac%20-%20debug/builds/7409
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20avx2/builds/7983
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20internal%20snapshot/builds/4901
Original issue's description:
> [heap] Do not invoke GC to make heap iterable.
>
> This reverts commit 0aa3707dc4.
>
> And removes the UnreachableObjectsFilter.
>
> BUG=chromium:580959
> LOG=n
>
> Committed: https://crrev.com/132f89800f560190b4d655adcb4e0eeedd17fd82
> Cr-Commit-Position: refs/heads/master@{#36617}
TBR=yangguo@chromium.org,ulan@chromium.org,hpayer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:580959
Review-Url: https://codereview.chromium.org/2020363002
Cr-Commit-Position: refs/heads/master@{#36622}
113 lines
3.7 KiB
JavaScript
113 lines
3.7 KiB
JavaScript
// Copyright 2008 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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// Flags: --expose-debug-as debug
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// Get the Debug object exposed from the debug context global object.
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Debug = debug.Debug
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// Simple object.
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var a = {};
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// Create mirror for the object.
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var mirror = debug.MakeMirror(a);
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// Initially one reference from the global object.
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assertEquals(1, mirror.referencedBy().length);
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assertEquals(1, mirror.referencedBy(0).length);
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assertEquals(1, mirror.referencedBy(1).length);
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assertEquals(1, mirror.referencedBy(10).length);
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// Add some more references from simple objects and arrays.
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var b = {}
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b.a = a;
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assertEquals(2, mirror.referencedBy().length);
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var c = {}
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c.a = a;
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c.aa = a;
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c.aaa = a;
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assertEquals(3, mirror.referencedBy().length);
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function d(){};
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d.a = a
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assertEquals(4, mirror.referencedBy().length);
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e = [a,b,c,d];
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assertEquals(5, mirror.referencedBy().length);
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// Simple closure.
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function closure_simple(p) {
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return function() { p = null; };
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}
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// This adds a reference (function context).
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f = closure_simple(a);
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assertEquals(6, mirror.referencedBy().length);
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// This clears the reference (in function context).
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f()
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assertEquals(5, mirror.referencedBy().length);
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// Use closure with eval - creates arguments array.
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function closure_eval(p, s) {
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if (s) {
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eval(s);
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}
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return function e(s) { eval(s); };
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}
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// This adds a references (function context).
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g = closure_eval(a);
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assertEquals(6, mirror.referencedBy().length);
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// Dynamically create a variable. This should create a context extension.
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h = closure_eval(null, "var x_");
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assertEquals(6, mirror.referencedBy().length);
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// Adds a reference when set.
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h("x_ = a");
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var x = mirror.referencedBy();
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assertEquals(7, mirror.referencedBy().length);
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// Removes a reference when cleared.
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h("x_ = null");
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assertEquals(6, mirror.referencedBy().length);
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// Check circular references.
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x = {}
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mirror = debug.MakeMirror(x);
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assertEquals(1, mirror.referencedBy().length);
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x.x = x;
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assertEquals(2, mirror.referencedBy().length);
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x = null;
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assertEquals(0, mirror.referencedBy().length);
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// Check many references.
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y = {}
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mirror = debug.MakeMirror(y);
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refs = [];
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for (var i = 0; i < 200; i++) {
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refs[i] = {'y': y};
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}
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y = null;
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assertEquals(200, mirror.referencedBy().length);
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