Read-only git subtree of base/ from aosp/platform/system/core/

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  1. 8cf6479 remove copybara initialization artifacts by Elliott Hughes · 6 weeks ago firmware-volteer-13521.B master release-R87-13505.B stabilize-13482.B stabilize-13525.B stabilize-13532.B stabilize-rust-13514.B stabilize-rust-13555.B
  2. e07c5dd Copybara Service Migration Initialization. by Elliott Hughes · 6 weeks ago
  3. a275372 Merge "Avoid zero-initializing our most-used buffers." by Elliott Hughes · 6 months ago factory-endeavour-13295.B factory-puff-13329.B factory-trogdor-13443.B factory-zork-13427.B firmware-endeavour-13259.B firmware-puff-13324.B firmware-zork-13421.B firmware-zork-13434.B release-R84-13099.B release-R85-13310.B release-R86-13421.B stabilize-13099.101.B stabilize-13099.110.B stabilize-13099.118.B stabilize-13099.70.B stabilize-13099.72.B stabilize-13099.73.B stabilize-13099.85.B stabilize-13099.90.B stabilize-13099.94.B stabilize-13310.72.B stabilize-13310.74.B stabilize-13310.83.B stabilize-13310.94.B stabilize-13310.99.B stabilize-13360.B stabilize-13421.42.B stabilize-13421.53.B stabilize-13421.73.B stabilize-13421.80.B stabilize-lazor-13278.B stabilize-quickfix-13099.93.B stabilize-quickfix-13310.73.B stabilize-quickfix-13310.76.B stabilize-quickfix-13310.91.B
  4. 1d75396 Merge "libbase/liblog: set min_sdk_version" by Jooyung Han · 6 months ago
  5. bcc09fa Merge "base: reimagine line splitting in logger.cpp" by Tom Cherry · 6 months ago

libbase

Who is this library for?

This library is a collection of convenience functions to make common tasks easier and less error-prone.

In this context, “error-prone” covers both “hard to do correctly” and “hard to do with good performance”, but as a general purpose library, libbase's primary focus is on making it easier to do things easily and correctly when a compromise has to be made between “simplest API” on the one hand and “fastest implementation” on the other. Though obviously the ideal is to have both.

Should my routine be added?

The intention is to cover the 80% use cases, not be all things to all users.

If you have a routine that‘s really useful in your project, congratulations. But that doesn’t mean it should be here rather than just in your project.

The question for libbase is “should everyone be doing this?”/“does this make everyone's code cleaner/safer?”. Historically we've considered the bar for inclusion to be “are there at least three unrelated projects that would be cleaned up by doing so”.

If your routine is actually something from a future C++ standard (that isn‘t yet in libc++), or it’s widely used in another library, that helps show that there's precedent. Being able to say “so-and-so has used this API for n years” is a good way to reduce concerns about API choices.

Any other restrictions?

Unlike most Android code, code in libbase has to build for Mac and Windows too.

Code here is also expected to have good test coverage.

By its nature, it‘s difficult to change libbase API. It’s often best to start using your routine just in your project, and let it “graduate” after you're certain that the API is solid.