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src: ensure V8 initialized before marking milestone #40405

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When Node.js is started within Electron's environment it doesn't initialize V8, so V8's start time is never set. As a result, Electron logs V8's start time as 0 and it breaks timestamps in the trace log.

This change fixes the issue by adding logic to log V8's start time only when V8 is initialized by Node.js.

@nodejs-github-bot nodejs-github-bot added c++ Issues and PRs that require attention from people who are familiar with C++. needs-ci PRs that need a full CI run. labels Oct 11, 2021
@Mesteery Mesteery added request-ci Add this label to start a Jenkins CI on a PR. and removed needs-ci PRs that need a full CI run. labels Oct 12, 2021
@github-actions github-actions bot removed the request-ci Add this label to start a Jenkins CI on a PR. label Oct 12, 2021
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@Mesteery Mesteery added the author ready PRs that have at least one approval, no pending requests for changes, and a CI started. label Oct 13, 2021

if (per_process::v8_initialized) {
performance_state_->Mark(performance::NODE_PERFORMANCE_MILESTONE_V8_START,
performance::performance_v8_start);
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Suggested change
performance::performance_v8_start);
performance::performance_v8_start);

nit: we can align these vertically

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Landed in ad4e70c

@codebytere codebytere closed this Oct 15, 2021
codebytere added a commit that referenced this pull request Oct 15, 2021
PR-URL: #40405
Refs: electron/electron#31349
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
@codebytere codebytere deleted the add-v8-init-check branch October 15, 2021 14:49
targos pushed a commit that referenced this pull request Nov 4, 2021
PR-URL: #40405
Refs: electron/electron#31349
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
@BethGriggs BethGriggs mentioned this pull request Nov 26, 2021
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