1 /*
2 * Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSET_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSET_HPP
27
28 #include "gc_implementation/g1/heapRegion.hpp"
29
30 // Large buffer for some cases where the output might be larger than normal.
31 #define HRS_ERR_MSG_BUFSZ 512
32 typedef FormatBuffer<HRS_ERR_MSG_BUFSZ> hrs_err_msg;
33
34 // Set verification will be forced either if someone defines
35 // HEAP_REGION_SET_FORCE_VERIFY to be 1, or in builds in which
36 // asserts are compiled in.
37 #ifndef HEAP_REGION_SET_FORCE_VERIFY
38 #define HEAP_REGION_SET_FORCE_VERIFY defined(ASSERT)
39 #endif // HEAP_REGION_SET_FORCE_VERIFY
40
41 class hrs_ext_msg;
42
43 class HRSMtSafeChecker : public CHeapObj<mtGC> {
44 public:
45 virtual void check() = 0;
46 };
47
48 class MasterFreeRegionListMtSafeChecker : public HRSMtSafeChecker { public: void check(); };
275 }
276
277 HeapRegion* get_next() {
278 assert(more_available(),
279 "get_next() should be called when more regions are available");
280
281 // If we are going to introduce a count in the iterator we should
282 // do the "cycle" check.
283
284 HeapRegion* hr = _curr;
285 _list->verify_region(hr);
286 _curr = hr->next();
287 return hr;
288 }
289
290 FreeRegionListIterator(FreeRegionList* list) : _curr(NULL), _list(list) {
291 _curr = list->_head;
292 }
293 };
294
295 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSET_HPP
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1 /*
2 * Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_VM_GC_G1_HEAPREGIONSET_HPP
26 #define SHARE_VM_GC_G1_HEAPREGIONSET_HPP
27
28 #include "gc/g1/heapRegion.hpp"
29
30 // Large buffer for some cases where the output might be larger than normal.
31 #define HRS_ERR_MSG_BUFSZ 512
32 typedef FormatBuffer<HRS_ERR_MSG_BUFSZ> hrs_err_msg;
33
34 // Set verification will be forced either if someone defines
35 // HEAP_REGION_SET_FORCE_VERIFY to be 1, or in builds in which
36 // asserts are compiled in.
37 #ifndef HEAP_REGION_SET_FORCE_VERIFY
38 #define HEAP_REGION_SET_FORCE_VERIFY defined(ASSERT)
39 #endif // HEAP_REGION_SET_FORCE_VERIFY
40
41 class hrs_ext_msg;
42
43 class HRSMtSafeChecker : public CHeapObj<mtGC> {
44 public:
45 virtual void check() = 0;
46 };
47
48 class MasterFreeRegionListMtSafeChecker : public HRSMtSafeChecker { public: void check(); };
275 }
276
277 HeapRegion* get_next() {
278 assert(more_available(),
279 "get_next() should be called when more regions are available");
280
281 // If we are going to introduce a count in the iterator we should
282 // do the "cycle" check.
283
284 HeapRegion* hr = _curr;
285 _list->verify_region(hr);
286 _curr = hr->next();
287 return hr;
288 }
289
290 FreeRegionListIterator(FreeRegionList* list) : _curr(NULL), _list(list) {
291 _curr = list->_head;
292 }
293 };
294
295 #endif // SHARE_VM_GC_G1_HEAPREGIONSET_HPP
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