19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2006 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage android.app; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport dalvik.system.PathClassLoader; 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.util.HashMap; 2285387d7ba36e56b291cbde87acb5a5b2200fe01cKenny Rootimport java.util.Map; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectclass ApplicationLoaders 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static ApplicationLoaders getDefault() 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project { 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return gApplicationLoaders; 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3185387d7ba36e56b291cbde87acb5a5b2200fe01cKenny Root public ClassLoader getClassLoader(String zip, String libPath, ClassLoader parent) 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project { 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This is the parent we use if they pass "null" in. In theory 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this should be the "system" class loader; in practice we 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * don't use that and can happily (and more efficiently) use the 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bootstrap class loader. 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ClassLoader baseParent = ClassLoader.getSystemClassLoader().getParent(); 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project synchronized (mLoaders) { 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (parent == null) { 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project parent = baseParent; 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If we're one step up from the base class loader, find 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * something in our cache. Otherwise, we create a whole 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * new ClassLoader for the zip archive. 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (parent == baseParent) { 5285387d7ba36e56b291cbde87acb5a5b2200fe01cKenny Root ClassLoader loader = mLoaders.get(zip); 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (loader != null) { 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return loader; 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project PathClassLoader pathClassloader = 5885387d7ba36e56b291cbde87acb5a5b2200fe01cKenny Root new PathClassLoader(zip, libPath, parent); 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLoaders.put(zip, pathClassloader); 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return pathClassloader; 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new PathClassLoader(zip, parent); 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6885387d7ba36e56b291cbde87acb5a5b2200fe01cKenny Root private final Map<String, ClassLoader> mLoaders = new HashMap<String, ClassLoader>(); 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final ApplicationLoaders gApplicationLoaders 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project = new ApplicationLoaders(); 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 73