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Don't create DevSupportManager when not in Dev mode


1. fixes I/O on UI Thread diffusion/FA/browse/master/java/com/facebook/catalyst/js/react-native-github/ReactAndroid/src/main/java/com/facebook/react/devsupport/;e6819b923967f9380dd6c10bfa8f1f40be558e2f$149 in prod builds
2. Less calls to Choreographer (i.e. in AutoProfiler) ==> better newsfeed scroll perf
3. Lower Memory footprint in prod

Reviewed By: astreet

Differential Revision: D2759498

fb-gh-sync-id: 4f593ba9219febb7045f4e470a14995e995ebbb1
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AaaChiuuu authored and facebook-github-bot-5 committed Jan 8, 2016
1 parent 47d0e3c commit 648364594c5b289a895ab5479fe83e8ba8308f82
@@ -52,6 +52,8 @@
import com.facebook.react.common.annotations.VisibleForTesting;
import com.facebook.react.devsupport.DevServerHelper;
import com.facebook.react.devsupport.DevSupportManager;
import com.facebook.react.devsupport.DevSupportManagerImpl;
import com.facebook.react.devsupport.DisabledDevSupportManager;
import com.facebook.react.devsupport.ReactInstanceDevCommandsHandler;
import com.facebook.react.modules.core.DefaultHardwareBackBtnHandler;
import com.facebook.react.modules.core.DeviceEventManagerModule;
@@ -252,15 +254,15 @@ public T get() throws Exception {
mJSMainModuleName = jsMainModuleName;
mPackages = packages;
mUseDeveloperSupport = useDeveloperSupport;
// We need to instantiate DevSupportManager regardless to the useDeveloperSupport option,
// although will prevent dev support manager from displaying any options or dialogs by
// checking useDeveloperSupport option before calling setDevSupportEnabled on this manager
// TODO(6803830): Don't instantiate devsupport manager when useDeveloperSupport is false
mDevSupportManager = new DevSupportManager(
if (mUseDeveloperSupport) {
mDevSupportManager = new DevSupportManagerImpl(
} else {
mDevSupportManager = new DisabledDevSupportManager();
mBridgeIdleDebugListener = bridgeIdleDebugListener;
mLifecycleState = initialLifecycleState;
mUIImplementationProvider = uiImplementationProvider;
@@ -0,0 +1,27 @@
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.

package com.facebook.react.bridge;

* Crashy crashy exception handler.
public class DefaultNativeModuleCallExceptionHandler implements NativeModuleCallExceptionHandler {

public void handleException(Exception e) {
if (e instanceof RuntimeException) {
// Because we are rethrowing the original exception, the original stacktrace will be
// preserved.
throw (RuntimeException) e;
} else {
throw new RuntimeException(e);

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