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8035406: Improve data structure for Code Cache remembered sets

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Change the code cache remembered sets data structure from a GrowableArray to a chunked list of nmethods. This makes the data structure more amenable to parallelization, and decreases freeing time.

Reviewed-by: mgerdin, brutisso
This commit is contained in:
Thomas Schatzl 2014-03-17 10:12:21 +01:00
parent c88e3def4d
commit 329e55e7b0
14 changed files with 656 additions and 69 deletions
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5
hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2001, 2014, 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
@ -1633,6 +1633,9 @@ public:
// that were not successfully evacuated are not migrated.
void migrate_strong_code_roots();
// Free up superfluous code root memory.
void purge_code_root_memory();
// During an initial mark pause, mark all the code roots that
// point into regions *not* in the collection set.
void mark_strong_code_roots(uint worker_id);