Merge "Fix the boot time regression caused by DexUseManagerLocal init."

    private void startBootstrapServices(@NonNull TimingsTraceAndSlog t) {

        t.traceBegin("startBootstrapServices");

        t.traceBegin("ArtModuleServiceInitializer");

        // This needs to happen before DexUseManagerLocal init. We do it here to avoid colliding

        // with a GC. ArtModuleServiceInitializer is a class from a separate dex file

        // "service-art.jar", so referencing it involves the class linker. The class linker and the

        // GC are mutually exclusive (b/263486535). Therefore, we do this here to force trigger the

        // class linker earlier. If we did this later, especially after PackageManagerService init,

        // the class linker would be consistently blocked by a GC because PackageManagerService

        // allocates a lot of memory and almost certainly triggers a GC.

        ArtModuleServiceInitializer.setArtModuleServiceManager(new ArtModuleServiceManager());

        t.traceEnd();

        // Start the watchdog as early as possible so we can crash the system server

        // if we deadlock during early boot

        t.traceBegin("StartWatchdog");

        t.traceBegin("DexUseManagerLocal");

        // DexUseManagerLocal needs to be loaded after PackageManagerLocal has been registered, but

        // before PackageManagerService starts processing binder calls to notifyDexLoad.

        // DexUseManagerLocal may also call artd, so ensure ArtModuleServiceManager is instantiated.

        ArtModuleServiceInitializer.setArtModuleServiceManager(new ArtModuleServiceManager());

        LocalManagerRegistry.addManager(

                DexUseManagerLocal.class, DexUseManagerLocal.createInstance());

        t.traceEnd();