backport: src,tools: speed up startup by 2.5% #9693
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This commit adds coverage for the timeout option used by child_process exec() and execFile(). PR-URL: nodejs#9208 Reviewed-By: Santiago Gimeno <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Michaël Zasso <[email protected]>
PR-URL: nodejs#9243 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Ben Noordhuis <[email protected]>
- Changed `assert.ok()` to `assert.strictEqual()`. - Changed `var` to `const` where possible. PR-URL: nodejs#9231 Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Rich Trott <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Ilkka Myller <[email protected]>
Writing data to TLSWrap instance during handshake will result in it being queued in `write_item_queue_`. This queue won't get cleared up until the end of the handshake. Technically, it gets cleared on `~TLSWrap` invocation, however this won't ever happen because every `WriteWrap` holds a reference to the `TLSWrap` through JS object, meaning that they are doomed to be alive for eternity. To breach this dreadful contract a knight shall embark from the `close` function to kill the dragon of memory leak with his magic spear of `destroySSL`. `destroySSL` cleans up `write_item_queue_` and frees `SSL` structure, both are good for memory usage. PR-URL: nodejs#9586 Reviewed-By: Ben Noordhuis <[email protected]>
Use zero-copy external string resources for storing the built-in JS source code. Saves a few hundred kilobyte of memory and consistently speeds up `benchmark/misc/startup.js` by 2.5%. Everything old is new again! Commit 74954ce ("Add string class that uses ExternalAsciiStringResource.") from 2011 did the same thing but I removed that in 2013 in commit 34b0a36 ("src: don't use NewExternal() with unaligned strings") because of a limitation in the V8 API. V8 no longer requires that strings are aligned if they are one-byte strings so it should be safe to re-enable external strings again. PR-URL: nodejs#5458 Reviewed-By: James M Snell <[email protected]> Reviewed-By: Robert Jefe Lindstaedt <[email protected]>
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this will need to be rebased. @bnoordhuis how long should this back on v7.x before landing? |
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Ignore this PR. It cherry-picks cleanly without a backport PR. |
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Checklist
make -j8 test(UNIX), orvcbuild test nosign(Windows) passesAffected core subsystem(s)
src, tools
Description of change
This is a backport of: