lukechilds/node - node - Gitea: Git with a cup of tea

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Author SHA1 Message Date

Author	SHA1	Message	Date
Anna Henningsen	86c4655a0f	src: fix build on certain platforms The `double` fields in `performance_state` could previously have been aligned at 4-byte instead of 8-byte boundaries, which would have made creating an Float64Array them as a array buffer view for an ArrayBuffer extending over the entire struct an invalid operation. Ref: `67269fd7f3` Comments out related flaky failure PR-URL: https://github.com/nodejs/node/pull/14996 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Refael Ackermann <refack@gmail.com>	8 years ago
James M Snell	67269fd7f3	perf_hooks: implementation of the perf timing API An initial implementation of the Performance Timing API for Node.js. This is the same Performance Timing API implemented by modern browsers with a number of Node.js specific properties. The User Timing mark() and measure() APIs are implemented, garbage collection timing, and node startup milestone timing. ```js const { performance } = require('perf_hooks'); performance.mark('A'); setTimeout(() => { performance.mark('B'); performance.measure('A to B', 'A', 'B'); const entry = performance.getEntriesByName('A to B', 'measure')[0]; console.log(entry.duration); }, 10000); ``` The implementation is at the native layer and makes use of uv_hrtime(). This should enable eventual integration with things like Tracing and Inspection. The implementation is extensible and should allow us to add new performance entry types as we go (e.g. for measuring i/o perf, etc). Documentation and a test are provided. PR-URL: https://github.com/nodejs/node/pull/14680 Reviewed-By: Matteo Collina <matteo.collina@gmail.com>	8 years ago

Anna Henningsen

86c4655a0f

src: fix build on certain platforms

The `double` fields in `performance_state` could previously have
been aligned at 4-byte instead of 8-byte boundaries, which would
have made creating an Float64Array them as a array buffer view
for an ArrayBuffer extending over the entire struct an invalid
operation.

Ref: 67269fd7f3

Comments out related flaky failure

PR-URL: https://github.com/nodejs/node/pull/14996
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>

8 years ago

James M Snell

67269fd7f3

perf_hooks: implementation of the perf timing API

An initial implementation of the Performance Timing API for Node.js.
This is the same Performance Timing API implemented by modern browsers
with a number of Node.js specific properties. The User Timing mark()
and measure() APIs are implemented, garbage collection timing, and
node startup milestone timing.

```js
const { performance } = require('perf_hooks');

performance.mark('A');
setTimeout(() => {
  performance.mark('B');
  performance.measure('A to B', 'A', 'B');
  const entry = performance.getEntriesByName('A to B', 'measure')[0];
  console.log(entry.duration);
}, 10000);
```

The implementation is at the native layer and makes use of uv_hrtime().
This should enable *eventual* integration with things like Tracing
and Inspection.

The implementation is extensible and should allow us to add new
performance entry types as we go (e.g. for measuring i/o perf,
etc).

Documentation and a test are provided.

PR-URL: https://github.com/nodejs/node/pull/14680
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>

8 years ago

2 Commits (fca31be8332bd06f606cdc37a8da27be097e7c0c)