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8254360: Re-examine use of CodeBuffer::verify_section_allocation

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Reviewed-by: neliasso, thartmann, kvn
This commit is contained in:
Claes Redestad 2020-11-25 21:50:34 +00:00
parent e56a8df8a0
commit 20020d1572
2 changed files with 23 additions and 18 deletions
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10
src/hotspot/share/asm/codeBuffer.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2020, 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
@ -177,6 +177,12 @@ class CodeSection {
bool allocates(address pc) const { return pc >= _start && pc < _limit; }
bool allocates2(address pc) const { return pc >= _start && pc <= _limit; }
// checks if two CodeSections are disjoint
//
// limit is an exclusive address and can be the start of another
// section.
bool disjoint(CodeSection* cs) const { return cs->_limit <= _start || cs->_start >= _limit; }
void set_end(address pc) { assert(allocates2(pc), "not in CodeBuffer memory: " INTPTR_FORMAT " <= " INTPTR_FORMAT " <= " INTPTR_FORMAT, p2i(_start), p2i(pc), p2i(_limit)); _end = pc; }
void set_mark(address pc) { assert(contains2(pc), "not in codeBuffer");
_mark = pc; }
@ -485,7 +491,7 @@ class CodeBuffer: public StackObj {
assert(code_start != NULL, "sanity");
initialize_misc("static buffer");
initialize(code_start, code_size);
verify_section_allocation();
debug_only(verify_section_allocation();)
}
// (2) CodeBuffer referring to pre-allocated CodeBlob.