16f6c0aecf
Inline adoc files when they are included exactly once. Also fix language tags because this inlining gives us better information on what language the code is written in.
35 lines
896 B
Plaintext
35 lines
896 B
Plaintext
== Why is this an issue?
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When two locks are held simultaneously, a ``++wait++`` call only releases one of them. The other will be held until some other thread requests a lock on the awaited object. If no unrelated code tries to lock on that object, then all other threads will be locked out, resulting in a deadlock.
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=== Noncompliant code example
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[source,java]
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----
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synchronized (this.mon1) { // threadB can't enter this block to request this.mon2 lock & release threadA
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synchronized (this.mon2) {
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this.mon2.wait(); // Noncompliant; threadA is stuck here holding lock on this.mon1
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}
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}
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----
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ifdef::env-github,rspecator-view[]
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'''
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== Implementation Specification
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(visible only on this page)
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=== Message
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Don't use "wait()" here; multiple locks are held.
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'''
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== Comments And Links
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(visible only on this page)
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include::../comments-and-links.adoc[]
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endif::env-github,rspecator-view[]
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