Merge "Context.getSystemService() shouldn't return null..." into rvc-dev am:... (6ac2a258) · Commits · e / os / android_frameworks_base

core/java/android/app/SystemServiceRegistry.java

+18 −5

Original line number	Diff line number	Diff line
		@@ -1658,6 +1658,9 @@ public final class SystemServiceRegistry {
		public final T getService(ContextImpl ctx) {
		final Object[] cache = ctx.mServiceCache;
		final int[] gates = ctx.mServiceInitializationStateArray;
		boolean interrupted = false;

		T ret = null;

		for (;;) {
		boolean doInitialize = false;
		@@ -1665,7 +1668,8 @@ public final class SystemServiceRegistry {
		// Return it if we already have a cached instance.
		T service = (T) cache[mCacheIndex];
		if (service != null \|\| gates[mCacheIndex] == ContextImpl.STATE_NOT_FOUND) {
		return service;
		ret = service;
		break; // exit the for (;;)
		}

		// If we get here, there's no cached instance.
		@@ -1708,24 +1712,33 @@ public final class SystemServiceRegistry {
		cache.notifyAll();
		}
		}
		return service;
		ret = service;
		break; // exit the for (;;)
		}
		// The other threads will wait for the first thread to call notifyAll(),
		// and go back to the top and retry.
		synchronized (cache) {
		// Repeat until the state becomes STATE_READY or STATE_NOT_FOUND.
		// We can't respond to interrupts here; just like we can't in the "doInitialize"
		// path, so we remember the interrupt state here and re-interrupt later.
		while (gates[mCacheIndex] < ContextImpl.STATE_READY) {
		try {
		// Clear the interrupt state.
		interrupted \|= Thread.interrupted();
		cache.wait();
		} catch (InterruptedException e) {
		// This shouldn't normally happen, but if someone interrupts the
		// thread, it will.
		Slog.wtf(TAG, "getService() interrupted");
		Thread.currentThread().interrupt();
		return null;
		Slog.w(TAG, "getService() interrupted");
		interrupted = true;
		}
		}
		}
		}
		if (interrupted) {
		Thread.currentThread().interrupt();
		}
		return ret;
		}

		public abstract T createService(ContextImpl ctx) throws ServiceNotFoundException;