You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
81 lines
1.5 KiB
81 lines
1.5 KiB
/*
|
|
* Copyright (c) 2016 - 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.checkers;
|
|
|
|
import javax.annotation.concurrent.ThreadSafe;
|
|
|
|
@ThreadSafe
|
|
class ReadWriteRaces{
|
|
|
|
// read and write outside of sync races
|
|
Integer safe_read;
|
|
Integer racy;
|
|
|
|
void m0_OK(){
|
|
Integer local;
|
|
local = safe_read;
|
|
}
|
|
|
|
void m0_OK2(){ //parallel reads are OK
|
|
Integer local;
|
|
local = safe_read;
|
|
}
|
|
|
|
void m1(){ // A read where there are other writes
|
|
Integer local;
|
|
local = racy;
|
|
}
|
|
|
|
public void m2(){
|
|
racy = 88;
|
|
}
|
|
|
|
public void m3(){
|
|
racy = 99;
|
|
}
|
|
|
|
// write inside sync, read outside of sync races
|
|
Object field1;
|
|
Object field2;
|
|
Object field3;
|
|
|
|
// need to report races involving safe writes in order to get this one
|
|
public synchronized void syncWrite1() {
|
|
field1 = new Object();
|
|
}
|
|
|
|
public Object unprotectedRead1() {
|
|
return field1;
|
|
}
|
|
|
|
public void syncWrite2() {
|
|
synchronized(this) {
|
|
field2 = new Object();
|
|
}
|
|
}
|
|
|
|
public Object unprotectedRead2() {
|
|
return field2;
|
|
}
|
|
|
|
private synchronized void syncWrite3() {
|
|
field3 = new Object();
|
|
}
|
|
|
|
public void callSyncWrite3() {
|
|
syncWrite3();
|
|
}
|
|
|
|
public Object unprotectedRead3() {
|
|
return field3;
|
|
}
|
|
|
|
}
|