mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Martin Konicek
42eb5464fd
This is an early release and there are several things that are known not to work if you're porting your iOS app to Android. See the Known Issues guide on the website. We will work with the community to reach platform parity with iOS.
94 lines
2.8 KiB
Java
94 lines
2.8 KiB
Java
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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package com.facebook.soloader;
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import java.util.List;
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import android.util.Log;
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/**
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* This is the base class for all the classes representing certain native library.
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* For loading native libraries we should always inherit from this class and provide relevant
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* information (libraries to load, code to test native call, dependencies?).
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* <p>
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* This instances should be singletons provided by DI.
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* <p>
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* This is a basic template but could be improved if we find the need.
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*/
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public abstract class NativeLibrary {
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private static final String TAG = NativeLibrary.class.getName();
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private final Object mLock;
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private List<String> mLibraryNames;
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private Boolean mLoadLibraries;
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private boolean mLibrariesLoaded;
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private volatile UnsatisfiedLinkError mLinkError;
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protected NativeLibrary(List<String> libraryNames) {
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mLock = new Object();
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mLoadLibraries = true;
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mLibrariesLoaded = false;
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mLinkError = null;
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mLibraryNames = libraryNames;
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}
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/**
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* safe loading of native libs
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* @return true if native libs loaded properly, false otherwise
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*/
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public boolean loadLibraries() {
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synchronized (mLock) {
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if (mLoadLibraries == false) {
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return mLibrariesLoaded;
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}
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try {
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for (String name: mLibraryNames) {
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SoLoader.loadLibrary(name);
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}
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initialNativeCheck();
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mLibrariesLoaded = true;
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mLibraryNames = null;
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} catch (UnsatisfiedLinkError error) {
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Log.e(TAG, "Failed to load native lib: ", error);
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mLinkError = error;
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mLibrariesLoaded = false;
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}
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mLoadLibraries = false;
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return mLibrariesLoaded;
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}
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}
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/**
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* loads libraries (if not loaded yet), throws on failure
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* @throws UnsatisfiedLinkError
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*/
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public void ensureLoaded() throws UnsatisfiedLinkError {
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if (!loadLibraries()) {
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throw mLinkError;
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}
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}
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/**
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* Override this method to make some concrete (quick and harmless) native call.
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* This avoids lazy-loading some phones (LG) use when we call loadLibrary. If there's a problem
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* we'll face an UnsupportedLinkError when first using the feature instead of here.
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* This check force a check right when intended.
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* This way clients of this library can know if it's loaded for sure or not.
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* @throws UnsatisfiedLinkError if there was an error loading native library
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*/
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protected void initialNativeCheck() throws UnsatisfiedLinkError {
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}
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public UnsatisfiedLinkError getError() {
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return mLinkError;
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}
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}
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