e5dd91bca7
1, See AconfigStorageReadAPI.java to see java APIs to map storage files and read flag values. It is using fast native annotation, in theory it should be faster than regular JNI without much of the overhead. 2, The java api calls into Rust wrapper in srcs/lib.rs, note that MappedByteBuffer is not copied during JNI. In the rust side implementation we get the underlying raw pointer and buffer size and reconstruct a rust slice. However, at current implmentation, the string input such as package name and flag name are most likely copied. They are converted from JStirng to JavaStr first without copy, then the into() call to convert it to Rust string. We could potentially optimize it to without copy. 3, Add an android_test target to lock down the API behaviors. Bug: b/321077378 Test: atest -c Change-Id: I8915fe70e8eb341be563c70f85e19e644e8aa6be |
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|---|---|---|
| .. | ||
| aconfig | ||
| aconfig_device_paths | ||
| aconfig_protos | ||
| aconfig_storage_file | ||
| aconfig_storage_read_api | ||
| aconfig_storage_write_api | ||
| aflags | ||
| fake_device_config | ||
| overrideflags | ||
| printflags | ||
| .editorconfig | ||
| .gitignore | ||
| Cargo.toml | ||
| MODULE_LICENSE_APACHE2 | ||
| OWNERS | ||
| PREUPLOAD.cfg | ||
| rustfmt.toml | ||
| TEST_MAPPING | ||