5505c66446
This is a reland of 3dfaf8264f
Original change's description:
> [debug] liveedit in native
>
> Liveedit step-by-step:
> 1. calculate diff between old source and new source,
> 2. map function literals from old source to new source,
> 3. create new script for new_source,
> 4. mark literals with changed code as changed, all others as unchanged,
> 5. check that for changed literals there are no:
> - running generators in the heap,
> - non droppable frames (e.g. running generator) above them on stack.
> 6. mark the bottom most frame with changed function as scheduled for
> restart if any.
> 7. for unchanged functions:
> - deoptimize,
> - remove from cache,
> - update source positions,
> - move to new script,
> - reset feedback information and preparsed scope information if any,
> - replace any sfi in constant pool with changed one if any.
> 8. for changed functions:
> - deoptimize
> - remove from cache,
> - reset feedback information,
> - update all links from js functions to old shared with new one.
> 9. swap scripts.
>
> TBR=ulan@chromium.org
>
> Bug: v8:7862,v8:5713
> Cq-Include-Trybots: luci.chromium.try:linux_chromium_headless_rel;luci.chromium.try:linux_chromium_rel_ng;master.tryserver.blink:linux_trusty_blink_rel
> Change-Id: I8f6f6156318cc82d6f36d7ebc1c9f7d5f3aa1461
> Reviewed-on: https://chromium-review.googlesource.com/1105493
> Reviewed-by: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
> Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#54146}
TBR=dgozman@chromium.org
Bug: v8:7862, v8:5713
Change-Id: I163ed2fd2ca3115ba0de74cb35a6fac9e40fdd94
Cq-Include-Trybots: luci.chromium.try:linux_chromium_headless_rel;luci.chromium.try:linux_chromium_rel_ng;master.tryserver.blink:linux_trusty_blink_rel
Reviewed-on: https://chromium-review.googlesource.com/1124879
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Reviewed-by: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54187}
88 lines
1.9 KiB
JavaScript
88 lines
1.9 KiB
JavaScript
// Copyright 2015 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Test that live-editing a frame that uses new.target fails.
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// Flags: --allow-natives-syntax
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Debug = debug.Debug
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var calls = 0;
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var exceptions = 0;
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var results = [];
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var replace_again;
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eval(`
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function LogNewTarget() {
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calls++;
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ReplaceOnce();
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results.push(true);
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results.push(new.target);
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}
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`);
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function Dummy() {}
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function ExecuteInDebugContext(f) {
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var result;
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var exception = null;
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Debug.setListener(function(event) {
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if (event == Debug.DebugEvent.Break) {
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try {
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result = f();
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} catch (e) {
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// Rethrow this exception later.
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exception = e;
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}
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}
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});
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debugger;
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Debug.setListener(null);
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if (exception !== null) throw exception;
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return result;
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}
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function Replace(fun, original, patch) {
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ExecuteInDebugContext(function() {
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try {
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%LiveEditPatchScript(fun, Debug.scriptSource(fun).replace(original, patch));
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} catch (e) {
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assertEquals(e, 'LiveEdit failed: BLOCKED_BY_NEW_TARGET_IN_RESTART_FRAME');
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exceptions++;
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}
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});
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}
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function ReplaceOnce() {
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if (replace_again) {
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replace_again = false;
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Replace(LogNewTarget, "true", "false");
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}
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}
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function Revert() {
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Replace(LogNewTarget, "false", "true");
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}
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replace_again = true;
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ReplaceOnce();
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new LogNewTarget();
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Revert();
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assertEquals(1, calls);
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assertEquals(0, exceptions);
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assertEquals([false, LogNewTarget], results);
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replace_again = true;
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LogNewTarget();
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replace_again = true;
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new LogNewTarget();
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replace_again = true;
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Reflect.construct(LogNewTarget, [], Dummy);
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assertEquals(
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[false, LogNewTarget, true, undefined, true, LogNewTarget, true, Dummy],
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results);
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assertEquals(4, calls); // No restarts
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assertEquals(3, exceptions); // Replace failed.
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