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_GCID_HPP
26 #define SHARE_VM_GC_SHARED_GCID_HPP
27
28 #include "memory/allocation.hpp"
29
30 class GCId : public AllStatic {
31 friend class GCIdMark;
32 friend class GCIdMarkAndRestore;
33 static uint _next_id;
34 static const uint UNDEFINED = (uint)-1;
35 static const uint create();
36
37 public:
38 // Returns the currently active GC id. Asserts that there is an active GC id.
39 static const uint current();
40 // Same as current() but can return undefined() if no GC id is currently active
41 static const uint current_or_undefined();
42 // Returns the next expected GCId.
43 static const uint peek();
44 static const uint undefined() { return UNDEFINED; }
45 static size_t print_prefix(char* buf, size_t len);
46 };
47
48 class GCIdMark : public StackObj {
49 uint _gc_id;
50 public:
51 GCIdMark();
52 GCIdMark(uint gc_id);
53 ~GCIdMark();
54 };
55
56 class GCIdMarkAndRestore : public StackObj {
57 uint _gc_id;
58 uint _previous_gc_id;
59 public:
60 GCIdMarkAndRestore();
61 GCIdMarkAndRestore(uint gc_id);
62 ~GCIdMarkAndRestore();
63 };
64
65 #endif // SHARE_VM_GC_SHARED_GCID_HPP
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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_GCID_HPP
26 #define SHARE_VM_GC_SHARED_GCID_HPP
27
28 #include "memory/allocation.hpp"
29
30 class GCId : public AllStatic {
31 private:
32 friend class GCIdMark;
33
34 static uint _next_id;
35 static const uint UNDEFINED = (uint)-1;
36 static uint create();
37
38 public:
39 // Returns the currently active GC id. Asserts that there is an active GC id.
40 static uint current();
41 // Same as current() but can return undefined() if no GC id is currently active
42 static uint current_or_undefined();
43 // Returns the next expected GCId.
44 static uint peek();
45 static uint undefined() { return UNDEFINED; }
46 static size_t print_prefix(char* buf, size_t len);
47 };
48
49 class GCIdMark : public StackObj {
50 private:
51 const uint _previous_gc_id;
52
53 public:
54 GCIdMark();
55 GCIdMark(uint gc_id);
56 ~GCIdMark();
57 };
58
59 #endif // SHARE_VM_GC_SHARED_GCID_HPP
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