lldb debug遇到dwo文件不存在的问题 #4
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zhuzhuaicoding
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May 23, 2017
- we should always set creation async stack if it's available regardless existing of current parent async stack, - we should cleanup parent link iff there is no creation and schedule async stack for parent. Let's consider example: Promise.resolve().then(x => x).then(x => x), there is three promises which will call following instrumentation: 1) created #1 (Promise.resolve()) - collected stack #1 2) scheduled #1 - collected stack #2 3) created #2 with #1 as parent (first .then) - collected stack #3 4) created #3 with #2 as parent (first .then) - collected stack #4 5) started #2 - use stack #2 as scheduled 6) scheduled #2 - collected stack v8#6 7) finished #2 8) started #3 - use stack v8#6 as scheduled 9) scheduled #3 - collected stack v8#7 10) finished #3 If we collect stacks between step 4 and 5, it's possible to collect scheduled stack #2 but still have creation stack for #2 - stack #3 - so we always need to add creation event if scheduled is collected. If we collect stacks between created and scheduled we should not remove parent link even if parent was not scheduled yet. BUG=v8:6189 R=dgozman@chromium.org Review-Url: https://codereview.chromium.org/2844753002 Cr-Commit-Position: refs/heads/master@{#44990}
zhuzhuaicoding
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May 23, 2017
…id:60001 of https://codereview.chromium.org/2814773005/ ) Reason for revert: Breaks node.js integration bot: https://build.chromium.org/p/client.v8.fyi/builders/V8%20-%20node.js%20integration/builds/5374/steps/build%20addons%20and%20test%20node.js/logs/stdio Original issue's description: > [js] Avoid %_ClassOf for collection builtins. > > The collection builtins (Map, Set, WeakMap, WeakSet) are still written > in JavaScript and make heavy use of %_ClassOf, which is kind of > expensive compared to a simple instance type check. Change that to use > simple instance type checks instead. > > R=jarin@chromium.org > BUG=v8:6261,v8:6278,v8:6344 > > Review-Url: https://codereview.chromium.org/2814773005 > Cr-Commit-Position: refs/heads/master@{#45106} > Committed: https://chromium.googlesource.com/v8/v8/+/28170099fd1efc84a724ef133f335fec521c0852 TBR=jarin@chromium.org,adamk@chromium.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=v8:6261,v8:6278,v8:6344 Review-Url: https://codereview.chromium.org/2860123002 Cr-Commit-Position: refs/heads/master@{#45108}
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在执行lldb的目录，建立out.gn/x64.debug/obj的目录软链接即可
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