|
|
|
/*
|
|
|
|
* Copyright (c) 2016-present, Facebook, Inc.
|
|
|
|
*
|
|
|
|
* This source code is licensed under the MIT license found in the
|
|
|
|
* LICENSE file in the root directory of this source tree.
|
|
|
|
*/
|
|
|
|
|
|
|
|
package build_systems.threadsafety;
|
|
|
|
|
|
|
|
import javax.annotation.concurrent.ThreadSafe;
|
|
|
|
|
|
|
|
@ThreadSafe
|
|
|
|
class DeDup{
|
|
|
|
|
|
|
|
Integer field;
|
|
|
|
Integer fielda, fieldb;
|
|
|
|
|
|
|
|
/* Only want one rather than two reports */
|
|
|
|
void two_fields(){
|
|
|
|
foo();
|
|
|
|
}
|
|
|
|
|
|
|
|
private void foo() {
|
|
|
|
fielda = 88;
|
|
|
|
fieldb = 99;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*Only the first write should be reported*/
|
|
|
|
void two_writes(){
|
|
|
|
field = 22;
|
|
|
|
field = 84;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*Only the first read should be reported*/
|
|
|
|
void two_reads(){ //parallel reads are OK
|
|
|
|
Integer local;
|
|
|
|
local = field;
|
|
|
|
local = field+1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*Both accesses should be reported*/
|
|
|
|
void write_read(){ //parallel reads are OK
|
|
|
|
Integer local;
|
|
|
|
field = 87;
|
|
|
|
local = field;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*Should only report the first write, which happens to be interprocedural*/
|
|
|
|
void twoWritesOneInCaller() {
|
|
|
|
writeToField();
|
|
|
|
field = 22;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*Should not report directly as provate method*/
|
|
|
|
private void writeToField() {
|
|
|
|
field = 33;
|
|
|
|
}
|
|
|
|
|
|
|
|
Integer colocated_read, colocated_write;
|
|
|
|
|
|
|
|
/*Should only report colocated write, not read, from readandwrite()*/
|
|
|
|
void colocated_read_write(){
|
|
|
|
read_and_write();
|
|
|
|
}
|
|
|
|
|
|
|
|
/*Should report*/
|
|
|
|
void separate_write_to_colocated_read(){
|
|
|
|
colocated_read= 88;
|
|
|
|
}
|
|
|
|
|
|
|
|
private void read_and_write() {
|
|
|
|
Integer x = colocated_read;
|
|
|
|
colocated_write= 99;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
}
|