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5c27e44488
Removes the requirement to use `--trace-events-enabled` to enable
trace events. Tracing is enabled automatically if there are any
enabled categories.
Adds a new `trace_events` module with an API for enabling/disabling
trace events at runtime without a command line flag.
```js
const trace_events = require('trace_events');
const categories = [ 'node.perf', 'node.async_hooks' ];
const tracing = trace_events.createTracing({ categories });
tracing.enable();
// do stuff
tracing.disable();
```
Multiple `Tracing` objects may exist and be enabled at any point
in time. The enabled trace event categories is the union of all
enabled `Tracing` objects and the `--trace-event-categories`
flag.
PR-URL: https://github.com/nodejs/node/pull/19803
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
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| .. | ||
| bootstrap | ||
| configure.d | ||
| doc | ||
| eslint-rules | ||
| gyp | ||
| icu | ||
| macos-installer | ||
| msvs | ||
| node_modules | ||
| pkgsrc | ||
| remark-cli | ||
| remark-preset-lint-node | ||
| rpm | ||
| .eslintrc.yaml | ||
| certdata.txt | ||
| check_macros.py | ||
| check-imports.py | ||
| compress_json.py | ||
| cpplint.py | ||
| create_android_makefiles | ||
| create_expfile.sh | ||
| dcheck_macros.py | ||
| genv8constants.py | ||
| getmoduleversion.py | ||
| getnodeversion.py | ||
| gyp_node.py | ||
| install.py | ||
| js2c.py | ||
| license2rtf.js | ||
| license-builder.sh | ||
| lint-js.js | ||
| lsan_suppressions.txt | ||
| macosx-firewall.sh | ||
| make-v8.sh | ||
| Makefile | ||
| mk-ca-bundle.pl | ||
| mkssldef.py | ||
| nodcheck_macros.py | ||
| osx-codesign.sh | ||
| osx-pkg-postinstall.sh | ||
| osx-productsign.sh | ||
| release.sh | ||
| run-valgrind.py | ||
| sign.bat | ||
| specialize_node_d.py | ||
| test-npm-package.js | ||
| test-v8.bat | ||
| test.py | ||
| update-authors.sh | ||
| update-babel-eslint.sh | ||
| update-eslint.sh | ||
| utils.py | ||