commit 3c0d84b21d2b91e954561f3d4e3e83663ded3f47
author Ben Vanik <ben.vanik@gmail.com> Thu Jun 09 10:03:51 2022 -0700
committer GitHub <noreply@github.com> Thu Jun 09 10:03:51 2022 -0700
tree 22e86964b94049e3e62657bcb155656d6ebbeae0
parent 7ca0f46fc38c7d5ccb7ee275db59ed7d992436ef

Adding iree_hal_driver_create_device_by_path & co. (#9413)

This adds the plumbing for creating devices by path specs in addition
to creating them by driver-specific IDs. A helper was also added to
create by ordinal to simplify tools that want to expose devices in a
canonical form with other driver-specific tools.

The creation methods also gain the ability to pass in key-value pair
parameters. Drivers can now use these parameters to refine device
selection and configure the devices during creation. The entire driver
layer is optional so the extra string handling here is only in cases that
desire it, and for devices that have no properties (like local-sync) it
doesn't add a cost.

A helper that parses a canonical device URI into the components for
create_device_by_path was added as iree_hal_driver_create_device_by_uri
and should be used by most hosting applications. For tooling and other
one-shot situations an even more convienient iree_hal_create_device is
added as an easy way to create devices with a massive footgun attached.
This may explode when using multiple devices or recreating devices; the
solution there is for the hosting application to create and cache the
drivers it wants to ensure remain around.

Progress on #9343.