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84 lines
2.9 KiB
C++
84 lines
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: set ts=4 sw=4 et tw=99 ft=cpp:
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla SpiderMonkey JavaScript 1.9 code, released
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* June 30, 2010
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*
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* The Initial Developer of the Original Code is
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* the Mozilla Corporation.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef jsgcstats_h___
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#define jsgcstats_h___
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#if !defined JS_DUMP_CONSERVATIVE_GC_ROOTS && defined DEBUG
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# define JS_DUMP_CONSERVATIVE_GC_ROOTS 1
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#endif
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namespace js {
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namespace gc {
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/*
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* The conservative GC test for a word shows that it is either a valid GC
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* thing or is not for one of the following reasons.
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*/
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enum ConservativeGCTest
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{
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CGCT_VALID,
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CGCT_LOWBITSET, /* excluded because one of the low bits was set */
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CGCT_NOTARENA, /* not within arena range in a chunk */
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CGCT_OTHERCOMPARTMENT, /* in another compartment */
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CGCT_NOTCHUNK, /* not within a valid chunk */
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CGCT_FREEARENA, /* within arena containing only free things */
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CGCT_NOTLIVE, /* gcthing is not allocated */
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CGCT_END
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};
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struct ConservativeGCStats
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{
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uint32 counter[gc::CGCT_END]; /* ConservativeGCTest classification
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counters */
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uint32 unaligned; /* number of valid but not aligned on
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thing start pointers */
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void add(const ConservativeGCStats &another) {
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for (size_t i = 0; i != JS_ARRAY_LENGTH(counter); ++i)
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counter[i] += another.counter[i];
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}
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void dump(FILE *fp);
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};
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} //gc
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} //js
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#endif /* jsgcstats_h__ */
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