Reviewed By: jeremydubreil Differential Revision: D6843300 fbshipit-source-id: 938125bmaster
Sam Blackshear
7 years ago
committed by
Facebook Github Bot
parent
e90e6c8bf0
commit
80b3d080ce
@ -1,121 +0,0 @@
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/*
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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 codetoanalyze.java.infer;
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import java.lang.ref.WeakReference;
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import android.content.Context;
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import android.app.Activity;
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public class ContextLeaks extends Activity {
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static Object sFld;
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void directLeak() {
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sFld = this;
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}
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public void leakThenFix() {
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sFld = this;
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sFld = null;
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}
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public void nonActivityNoLeak() {
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sFld = new Object();
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}
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static class Obj {
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public Object f;
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}
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public void indirectLeak() {
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Obj o = new Obj();
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o.f = this;
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sFld = o;
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}
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public void indirectLeakThenFix() {
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Obj o = new Obj();
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o.f = this;
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sFld = o;
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o.f = null;
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}
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class NonStaticInner {
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}
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public void nonStaticInnerClassLeak() {
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sFld = new NonStaticInner();
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}
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public void nonStaticInnerClassLeakThenFix() {
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sFld = new NonStaticInner();
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sFld = null;
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}
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private Object o;
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public void leakAfterInstanceFieldWrite() {
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this.o = new Object();
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sFld = this;
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}
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public static class Singleton {
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private static Singleton instance;
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private Context context;
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private Singleton(Context context) {
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this.context = context;
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}
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public static Singleton getInstance(Context context) {
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if (instance == null) {
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instance = new Singleton(context);
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}
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return instance;
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}
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}
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public Singleton singletonLeak() {
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return Singleton.getInstance(this);
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}
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public Singleton singletonNoLeak() {
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return Singleton.getInstance(this.getApplicationContext());
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}
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// testing that we don't report on static field -> ... -> Context paths broken by weak refs
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static WeakReference<Context> sDirectWeakReference;
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static WeakReference<Obj> sIndirectWeakReference1;
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static Obj sIndirectWeakReference2;
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// sDirectWeakReference |-> WeakReference.referent |-> Context
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public void directWeakReferenceOk() {
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sDirectWeakReference = new WeakReference(this);
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}
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// sIndirectWeakReference1 |-> WeakReference.referent |-> Obj.f |-> Context
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public void indirectWeakReferenceOk1() {
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Obj obj = new Obj();
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obj.f = this;
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sIndirectWeakReference1 = new WeakReference(obj);
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}
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// sIndirectWeakReference2.|-> Obj.f |-> WeakReference.referent |-> Context
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public void indirectWeakReferenceOk2() {
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Obj obj = new Obj();
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obj.f = new WeakReference(this);
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sIndirectWeakReference2 = obj;
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}
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}
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