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import org.checkerframework.checker.lock.qual.*;
public class Methods {
final Object lock = new Object();
@Holding("lock")
void lockedByLock() {}
@Holding("this")
void lockedByThis() {}
// unguarded calls
void unguardedCalls() {
// :: error: (contracts.precondition.not.satisfied)
lockedByLock(); // error
// :: error: (contracts.precondition.not.satisfied)
lockedByThis(); // error
}
@Holding("lock")
void usingHolding1() {
lockedByLock();
// :: error: (contracts.precondition.not.satisfied)
lockedByThis(); // error
}
@Holding("this")
void usingHolding2() {
// :: error: (contracts.precondition.not.satisfied)
lockedByLock(); // error
lockedByThis();
}
void usingSynchronization1() {
synchronized (lock) {
lockedByLock();
// :: error: (contracts.precondition.not.satisfied)
lockedByThis(); // error
}
}
void usingSynchronization2() {
synchronized (this) {
// :: error: (contracts.precondition.not.satisfied)
lockedByLock(); // error
lockedByThis();
}
}
synchronized void usingMethodModifier() {
// :: error: (contracts.precondition.not.satisfied)
lockedByLock(); // error
lockedByThis();
}
}
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