| /* |
| * Copyright 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package dalvik.system; |
| |
| import java.lang.reflect.Method; |
| |
| public class BlockGuard { |
| private static Method m_getThreadPolicy; |
| private static Method m_onNetwork; |
| static { |
| try { |
| ClassLoader cl = ClassLoader.getSystemClassLoader(); |
| Class<?> c_closeGuard = cl.loadClass("dalvik.system.BlockGuard"); |
| |
| m_getThreadPolicy = c_closeGuard.getDeclaredMethod("getThreadPolicy"); |
| m_getThreadPolicy.setAccessible(true); |
| |
| Class<?> c_policy = cl.loadClass("dalvik.system.BlockGuard.Policy"); |
| |
| m_onNetwork = c_policy.getDeclaredMethod("onNetwork"); |
| m_onNetwork.setAccessible(true); |
| } catch (Exception ignored) { |
| } |
| } |
| |
| private BlockGuard() { |
| } |
| |
| public static Policy getThreadPolicy() { |
| if (m_getThreadPolicy != null) { |
| try { |
| Object wrappedPolicy = m_getThreadPolicy.invoke(null); |
| return new PolicyWrapper(wrappedPolicy); |
| } catch (Exception ignored) { |
| } |
| } |
| return new PolicyWrapper(null); |
| } |
| |
| public interface Policy { |
| void onNetwork(); |
| } |
| |
| public static class PolicyWrapper implements Policy { |
| private final Object wrappedPolicy; |
| |
| private PolicyWrapper(Object wrappedPolicy) { |
| this.wrappedPolicy = wrappedPolicy; |
| } |
| |
| public void onNetwork() { |
| if (m_onNetwork != null && wrappedPolicy != null) { |
| try { |
| m_onNetwork.invoke(wrappedPolicy); |
| } catch (Exception ignored) { |
| } |
| } |
| } |
| } |
| } |