1 /*
2 * Copyright (c) 2002, 2013, 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_SHARED_ISGCACTIVEMARK_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_ISGCACTIVEMARK_HPP
27
28 #include "utilities/macros.hpp"
29 #if INCLUDE_ALL_GCS
30 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp"
31 #endif // INCLUDE_ALL_GCS
32
33 // This class provides a method for block structured setting of the
34 // _is_gc_active state without requiring accessors in CollectedHeap
35
36 class IsGCActiveMark : public StackObj {
37 public:
38 IsGCActiveMark() {
39 CollectedHeap* heap = Universe::heap();
40 assert(!heap->is_gc_active(), "Not reentrant");
41 heap->_is_gc_active = true;
42 }
43
44 ~IsGCActiveMark() {
45 CollectedHeap* heap = Universe::heap();
46 assert(heap->is_gc_active(), "Sanity");
47 heap->_is_gc_active = false;
48 }
49 };
50
51 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_ISGCACTIVEMARK_HPP
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1 /*
2 * Copyright (c) 2002, 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_SHARED_ISGCACTIVEMARK_HPP
26 #define SHARE_VM_GC_SHARED_ISGCACTIVEMARK_HPP
27
28 #include "utilities/macros.hpp"
29 #if INCLUDE_ALL_GCS
30 #include "gc/parallel/parallelScavengeHeap.hpp"
31 #endif // INCLUDE_ALL_GCS
32
33 // This class provides a method for block structured setting of the
34 // _is_gc_active state without requiring accessors in CollectedHeap
35
36 class IsGCActiveMark : public StackObj {
37 public:
38 IsGCActiveMark() {
39 CollectedHeap* heap = Universe::heap();
40 assert(!heap->is_gc_active(), "Not reentrant");
41 heap->_is_gc_active = true;
42 }
43
44 ~IsGCActiveMark() {
45 CollectedHeap* heap = Universe::heap();
46 assert(heap->is_gc_active(), "Sanity");
47 heap->_is_gc_active = false;
48 }
49 };
50
51 #endif // SHARE_VM_GC_SHARED_ISGCACTIVEMARK_HPP
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