Merge "Switch /data/misc/reboot/last_reboot_reason to persistent property" (0172ce8d) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/power/PowerManagerService.java

+8 −12

Original line number	Diff line number	Diff line
		@@ -200,8 +200,8 @@ public final class PowerManagerService extends SystemService
		// Possible reasons for shutting down for use in data/misc/reboot/last_shutdown_reason
		private static final String REASON_SHUTDOWN = "shutdown";
		private static final String REASON_REBOOT = "reboot";
		private static final String REASON_USERREQUESTED = "userrequested";
		private static final String REASON_THERMAL_SHUTDOWN = "thermal-shutdown";
		private static final String REASON_USERREQUESTED = "shutdown,userrequested";
		private static final String REASON_THERMAL_SHUTDOWN = "shutdown,thermal";

		private static final String TRACE_SCREEN_ON = "Screen turning on";

		@@ -216,8 +216,8 @@ public final class PowerManagerService extends SystemService
		private static final int HALT_MODE_REBOOT = 1;
		private static final int HALT_MODE_REBOOT_SAFE_MODE = 2;

		// File location for last reboot reason
		private static final String LAST_REBOOT_LOCATION = "/data/misc/reboot/last_reboot_reason";
		// Persistent property for last reboot reason
		private static final String LAST_REBOOT_PROPERTY = "persist.sys.boot.reason";

		private final Context mContext;
		private final ServiceThread mHandlerThread;
		@@ -4373,7 +4373,7 @@ public final class PowerManagerService extends SystemService

		final long ident = Binder.clearCallingIdentity();
		try {
		return getLastShutdownReasonInternal(new File(LAST_REBOOT_LOCATION));
		return getLastShutdownReasonInternal(LAST_REBOOT_PROPERTY);
		} finally {
		Binder.restoreCallingIdentity(ident);
		}
		@@ -4607,13 +4607,9 @@ public final class PowerManagerService extends SystemService
		}

		@VisibleForTesting
		int getLastShutdownReasonInternal(File lastRebootReason) {
		String line = "";
		try (BufferedReader bufferedReader = new BufferedReader(new FileReader(lastRebootReason))){
		line = bufferedReader.readLine();
		} catch (IOException e) {
		Slog.e(TAG, "Failed to read last_reboot_reason file", e);
		}
		// lastRebootReasonProperty argument to permit testing
		int getLastShutdownReasonInternal(String lastRebootReasonProperty) {
		String line = SystemProperties.get(lastRebootReasonProperty);
		if (line == null) {
		return PowerManager.SHUTDOWN_REASON_UNKNOWN;
		}

services/tests/servicestests/src/com/android/server/power/PowerManagerServiceTest.java

+5 −14

Original line number	Diff line number	Diff line
		@@ -20,6 +20,7 @@ import android.content.Context;
		import android.hardware.display.DisplayManagerInternal.DisplayPowerRequest;
		import android.os.PowerManager;
		import android.os.PowerSaveState;
		import android.os.SystemProperties;
		import android.test.AndroidTestCase;
		import android.test.suitebuilder.annotation.SmallTest;
		import android.text.TextUtils;
		@@ -44,17 +45,14 @@ public class PowerManagerServiceTest extends AndroidTestCase {
		private static final float PRECISION = 0.001f;
		private static final float BRIGHTNESS_FACTOR = 0.7f;
		private static final boolean BATTERY_SAVER_ENABLED = true;
		private static final String LAST_REBOOT_REASON = "last_reboot_reason";
		private static final String TEST_LAST_REBOOT_PROPERTY = "test.sys.boot.reason";

		private @Mock BatterySaverPolicy mBatterySaverPolicy;
		private PowerManagerService mService;
		private PowerSaveState mPowerSaveState;
		private DisplayPowerRequest mDisplayPowerRequest;
		private File mTempReason;

		@Rule
		public TemporaryFolder temporaryFolder = new TemporaryFolder();

		public void setUp() throws Exception {
		super.setUp();
		MockitoAnnotations.initMocks(this);
		@@ -68,8 +66,6 @@ public class PowerManagerServiceTest extends AndroidTestCase {
		.thenReturn(mPowerSaveState);
		mDisplayPowerRequest = new DisplayPowerRequest();
		mService = new PowerManagerService(getContext(), mBatterySaverPolicy);
		temporaryFolder.create();
		mTempReason = temporaryFolder.newFile(LAST_REBOOT_REASON);
		}

		@SmallTest
		@@ -82,14 +78,9 @@ public class PowerManagerServiceTest extends AndroidTestCase {

		@SmallTest
		public void testGetLastShutdownReasonInternal() {
		try {
		FileWriter writer = new FileWriter(mTempReason);
		writer.append("thermal-shutdown\n");
		writer.close();
		} catch (IOException e) {
		e.printStackTrace();
		}
		int reason = mService.getLastShutdownReasonInternal(mTempReason);
		SystemProperties.set(TEST_LAST_REBOOT_PROPERTY, "shutdown,thermal");
		int reason = mService.getLastShutdownReasonInternal(TEST_LAST_REBOOT_PROPERTY);
		SystemProperties.set(TEST_LAST_REBOOT_PROPERTY, "");
		assertThat(reason).isEqualTo(PowerManager.SHUTDOWN_REASON_THERMAL_SHUTDOWN);
		}
		}