If you would like to use this error-prone rule or any other of our developer tooling, feel free to check out our Baseline repository on GitHub. Of course we have fixed those potential race conditions in order to prevent them from causing damage in the wild. We have applied the error-prone rule to many of our internal code repositories and have - sadly, but unsurprisingly - found a number of violations. See Java Language Changes for a summary of updated language features in Java SE 9 and subsequent releases. Examples and practices described in this page don't take advantage of improvements introduced in later releases and might use technology no longer available. Assume that we have a class Base whose initialization code (for example via static fields) depends on its own subclass Sub: class Base Deadlock: Deadlock is a situation when two threads are waiting for each other and the waiting never ends. The Java Tutorials have been written for JDK 8. Our colleague Justin had reported back in 2018 that JavaPoet suffers from a race condition in multi-threaded environments: non-deterministically, two threads would get deadlocked in JavaPoet library code.Īs Justin had conjectured, the cause of the deadlock is a race condition between two class initialization code paths. Discovery and fix of a JavaPoet race conditionĪt Palantir, we use Square’s fantastic JavaPoet library for many code generation tasks, first and foremost to generate the Java bindings of our RPC framework, Conjure. Important Points : If threads are waiting for each other to finish, then the condition is known as Deadlock.
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