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8259487: Remove unused StarTask

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Reviewed-by: iklam, tschatzl
This commit is contained in:
Kim Barrett 2021-01-29 03:34:02 +00:00
parent 1519632597
commit 251c6419bf
1 changed files with 1 additions and 31 deletions
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32
src/hotspot/share/gc/shared/taskqueue.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2001, 2020, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2001, 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -515,36 +515,6 @@ public:
virtual bool should_exit_termination() = 0;
};
// This is a container class for either an oop* or a narrowOop*.
// Both are pushed onto a task queue and the consumer will test is_narrow()
// to determine which should be processed.
class StarTask {
void* _holder; // either union oop* or narrowOop*
enum { COMPRESSED_OOP_MASK = 1 };
public:
StarTask(narrowOop* p) {
assert(((uintptr_t)p & COMPRESSED_OOP_MASK) == 0, "Information loss!");
_holder = (void *)((uintptr_t)p | COMPRESSED_OOP_MASK);
}
StarTask(oop* p) {
assert(((uintptr_t)p & COMPRESSED_OOP_MASK) == 0, "Information loss!");
_holder = (void*)p;
}
StarTask() { _holder = NULL; }
// Trivially copyable, for use in GenericTaskQueue.
operator oop*() { return (oop*)_holder; }
operator narrowOop*() {
return (narrowOop*)((uintptr_t)_holder & ~COMPRESSED_OOP_MASK);
}
bool is_narrow() const {
return (((uintptr_t)_holder & COMPRESSED_OOP_MASK) != 0);
}
};
class ObjArrayTask
{
public: