19370a0a31
This module is repsonsible for finding the storage file location based on a pb file and then map these storage files into memory using memmap2 crate. The mapped files are cached in a static hashmap in this module. Note that memmap2 crate has not been introduced to AOSP yet as a 3p crate. It is in the process of importing to AOSP ATM. So in src/lib.rs, we only include this module if we are building the target using cargo. Also, the test storage files: package.map, flag.map and flag.val are generated based on the storage test aconfig files in aconfig/aconfig/tests dir. With aconfig create-cache command first to produce cache files, and then aconfig create-storage command to create each storage file. aconfig create-cache --package com.android.aconfig.storage.test_1 --container system --declarations ./storage_test_1.aconfig --cache com.android.aconfig.storage.test_1.cache aconfig create-cache --package com.android.aconfig.storage.test_2 --container system --declarations ./storage_test_2.aconfig --cache com.android.aconfig.storage.test_2.cache aconfig create-cache --package com.android.aconfig.storage.test_4 --container system --declarations ./storage_test_4.aconfig --cache com.android.aconfig.storage.test_4.cache aconfig create-storage --container system --cache ./com.android.aconfig.storage.test_1.cache --cache ./com.android.aconfig.storage.test_2.cache --cache ./com.android.aconfig.storage.test_4.cache --file flag_val --out ./flag.value aconfig create-storage --container system --cache ./com.android.aconfig.storage.test_1.cache --cache ./com.android.aconfig.storage.test_2.cache --cache ./com.android.aconfig.storage.test_4.cache --file package_map --out ./package.map aconfig create-storage --container system --cache ./com.android.aconfig.storage.test_1.cache --cache ./com.android.aconfig.storage.test_2.cache --cache ./com.android.aconfig.storage.test_4.cache --file flag_map --out ./flag.map Bug: 321077378 Test: atest aconfig_storage_file.test Change-Id: Id4bd26ce1a2513cdda201b479cec2b8c04faabfe
Android Make Build System
This is the Makefile-based portion of the Android Build System.
For documentation on how to run a build, see Usage.txt
For a list of behavioral changes useful for Android.mk writers see Changes.md
For an outdated reference on Android.mk files, see build-system.html. Our Android.mk files look similar, but are entirely different from the Android.mk files used by the NDK build system. When searching for documentation elsewhere, ensure that it is for the platform build system -- most are not.
This Makefile-based system is in the process of being replaced with Soong, a new build system written in Go. During the transition, all of these makefiles are read by Kati, and generate a ninja file instead of being executed directly. That's combined with a ninja file read by Soong so that the build graph of the two systems can be combined and run as one.