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7046558: G1: concurrent marking optimizations

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Some optimizations to improve the concurrent marking phase: specialize the main oop closure, make sure a few methods in the fast path are properly inlined, a few more bits and pieces, and some cosmetic fixes.

Reviewed-by: stefank, johnc
This commit is contained in:
Antonios Printezis 2011-06-14 10:33:43 -04:00
parent c0d64ac595
commit 015e872efe
7 changed files with 295 additions and 209 deletions
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8
hotspot/src/share/vm/utilities/bitMap.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2011, 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
@ -161,11 +161,11 @@ class BitMap VALUE_OBJ_CLASS_SPEC {
// Set or clear the specified bit.
inline void set_bit(idx_t bit);
void clear_bit(idx_t bit);
inline void clear_bit(idx_t bit);
// Atomically set or clear the specified bit.
bool par_set_bit(idx_t bit);
bool par_clear_bit(idx_t bit);
inline bool par_set_bit(idx_t bit);
inline bool par_clear_bit(idx_t bit);
// Put the given value at the given offset. The parallel version
// will CAS the value into the bitmap and is quite a bit slower.