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 @@
|
|||||||
/*
|
|
||||||
* 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 codetoanalyze.java.infer;
|
|
||||||
|
|
||||||
import java.lang.ref.WeakReference;
|
|
||||||
|
|
||||||
import android.content.Context;
|
|
||||||
import android.app.Activity;
|
|
||||||
|
|
||||||
public class ContextLeaks extends Activity {
|
|
||||||
|
|
||||||
static Object sFld;
|
|
||||||
|
|
||||||
void directLeak() {
|
|
||||||
sFld = this;
|
|
||||||
}
|
|
||||||
|
|
||||||
public void leakThenFix() {
|
|
||||||
sFld = this;
|
|
||||||
sFld = null;
|
|
||||||
}
|
|
||||||
|
|
||||||
public void nonActivityNoLeak() {
|
|
||||||
sFld = new Object();
|
|
||||||
}
|
|
||||||
|
|
||||||
static class Obj {
|
|
||||||
public Object f;
|
|
||||||
}
|
|
||||||
|
|
||||||
public void indirectLeak() {
|
|
||||||
Obj o = new Obj();
|
|
||||||
o.f = this;
|
|
||||||
sFld = o;
|
|
||||||
}
|
|
||||||
|
|
||||||
public void indirectLeakThenFix() {
|
|
||||||
Obj o = new Obj();
|
|
||||||
o.f = this;
|
|
||||||
sFld = o;
|
|
||||||
o.f = null;
|
|
||||||
}
|
|
||||||
|
|
||||||
class NonStaticInner {
|
|
||||||
}
|
|
||||||
|
|
||||||
public void nonStaticInnerClassLeak() {
|
|
||||||
sFld = new NonStaticInner();
|
|
||||||
}
|
|
||||||
|
|
||||||
public void nonStaticInnerClassLeakThenFix() {
|
|
||||||
sFld = new NonStaticInner();
|
|
||||||
sFld = null;
|
|
||||||
}
|
|
||||||
|
|
||||||
private Object o;
|
|
||||||
|
|
||||||
public void leakAfterInstanceFieldWrite() {
|
|
||||||
this.o = new Object();
|
|
||||||
sFld = this;
|
|
||||||
}
|
|
||||||
|
|
||||||
public static class Singleton {
|
|
||||||
|
|
||||||
private static Singleton instance;
|
|
||||||
private Context context;
|
|
||||||
|
|
||||||
private Singleton(Context context) {
|
|
||||||
this.context = context;
|
|
||||||
}
|
|
||||||
|
|
||||||
public static Singleton getInstance(Context context) {
|
|
||||||
if (instance == null) {
|
|
||||||
instance = new Singleton(context);
|
|
||||||
}
|
|
||||||
return instance;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
public Singleton singletonLeak() {
|
|
||||||
return Singleton.getInstance(this);
|
|
||||||
}
|
|
||||||
|
|
||||||
public Singleton singletonNoLeak() {
|
|
||||||
return Singleton.getInstance(this.getApplicationContext());
|
|
||||||
}
|
|
||||||
|
|
||||||
// testing that we don't report on static field -> ... -> Context paths broken by weak refs
|
|
||||||
static WeakReference<Context> sDirectWeakReference;
|
|
||||||
|
|
||||||
static WeakReference<Obj> sIndirectWeakReference1;
|
|
||||||
|
|
||||||
static Obj sIndirectWeakReference2;
|
|
||||||
|
|
||||||
// sDirectWeakReference |-> WeakReference.referent |-> Context
|
|
||||||
public void directWeakReferenceOk() {
|
|
||||||
sDirectWeakReference = new WeakReference(this);
|
|
||||||
}
|
|
||||||
|
|
||||||
// sIndirectWeakReference1 |-> WeakReference.referent |-> Obj.f |-> Context
|
|
||||||
public void indirectWeakReferenceOk1() {
|
|
||||||
Obj obj = new Obj();
|
|
||||||
obj.f = this;
|
|
||||||
sIndirectWeakReference1 = new WeakReference(obj);
|
|
||||||
}
|
|
||||||
|
|
||||||
// sIndirectWeakReference2.|-> Obj.f |-> WeakReference.referent |-> Context
|
|
||||||
public void indirectWeakReferenceOk2() {
|
|
||||||
Obj obj = new Obj();
|
|
||||||
obj.f = new WeakReference(this);
|
|
||||||
sIndirectWeakReference2 = obj;
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
Loading…
Reference in new issue