tree 0c754b0bae7fd4c56f3285b48e08f4e7c74f049d
parent 8d1b023dec36ab50138d427e807175fd99b5bb57
author Matt Stark <msta@google.com> 1780633325 +1000
committer gn-scoped@luci-project-accounts.iam.gserviceaccount.com <gn-scoped@luci-project-accounts.iam.gserviceaccount.com> 1782713377 -0700

Create an `intern_string` function accessible to rust

This function will be used to intern paths to allow fast comparison and
fast hashing by pointer equality, improving the performance of depset
operations.

See the child CL's file.rs for usage.

In order to resolve a compile error on mac, we also patch in my changes to cxx.h from:
https://github.com/dtolnay/cxx/pull/1723
https://github.com/dtolnay/cxx/pull/1724

Hopefully they will be available upstream by the time we actually
vendor. Otherwise we'll just use a patched version of the crate like we
have for starlark-rs.

Bug: 528225104
Change-Id: I4f631049633dc5bd4c35a4f0125847566a6a6964
Reviewed-on: https://gn-review.googlesource.com/c/gn/+/23260
Reviewed-by: Takuto Ikuta <tikuta@google.com>
Commit-Queue: Matt Stark <msta@google.com>