speedscope/import
Jamie Wong 274110a46b
Support importing time profiles from Instruments .trace files (#41)
#33 added support for importing from instruments indirectly via opening instruments and using the deep copy command. This PR adds support for importing `.trace` files directly, though only for time profiles specifically, and only for the highest sample count thread in the profile.

This PR adds `.trace` files from Instruments 9, and adds support for importing from either Instruments 8 and 9. The only major difference in the file format seems to be that Instruments 9 applies raw `zlib` compression generously throughout the file.

This PR also adds example `.trace` files for memory allocations, which are not supported for direct import. They use a totally different storage format for recording memory allocations, and I haven't yet figured out how that list of allocations references their corresponding callstack.

Lastly, this PR also adds examples from Instruments 7 since I happen to have a machine with an old version of Instruments. Import from Instruments 7 probably wouldn't be hard to add, but I haven't done that in this PR.

This currently only works in Chrome, and only via drag-and-drop of the files.

To test, drag the decompressed `simple-time-profile.trace` from 6016d970b9/sample/profiles/Instruments/9.3.1/simple-time-profile.trace.zip onto speedscope.

The result should be this:

![image](https://user-images.githubusercontent.com/150329/40162338-8fa13502-5968-11e8-8fb3-40626e41884a.png)

Fixes #15
2018-05-17 00:33:09 -07:00
..
bg-flamegraph.ts Address review comments 2018-04-14 16:19:26 -07:00
chrome.ts Address review comments 2018-04-14 16:19:26 -07:00
firefox.ts Support importing from Firefox (#26) 2018-04-17 18:50:53 -07:00
instruments.ts Support importing time profiles from Instruments .trace files (#41) 2018-05-17 00:33:09 -07:00
stackprof.ts Address review comments 2018-04-14 16:19:26 -07:00