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 #include "precompiled.hpp"
26 #include "services/memPtr.hpp"
27 #include "services/memTracker.hpp"
28
29 volatile jint SequenceGenerator::_seq_number = 1;
30 volatile unsigned long SequenceGenerator::_generation = 1;
31 NOT_PRODUCT(jint SequenceGenerator::_max_seq_number = 1;)
32
33 jint SequenceGenerator::next() {
34 jint seq = Atomic::add(1, &_seq_number);
35 if (seq < 0) {
36 MemTracker::shutdown(MemTracker::NMT_sequence_overflow);
37 } else {
38 NOT_PRODUCT(_max_seq_number = (seq > _max_seq_number) ? seq : _max_seq_number;)
39 }
40 return seq;
41 }
42
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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 #include "precompiled.hpp"
26 #include "runtime/atomic.inline.hpp"
27 #include "services/memPtr.hpp"
28 #include "services/memTracker.hpp"
29
30 volatile jint SequenceGenerator::_seq_number = 1;
31 volatile unsigned long SequenceGenerator::_generation = 1;
32 NOT_PRODUCT(jint SequenceGenerator::_max_seq_number = 1;)
33
34 jint SequenceGenerator::next() {
35 jint seq = Atomic::add(1, &_seq_number);
36 if (seq < 0) {
37 MemTracker::shutdown(MemTracker::NMT_sequence_overflow);
38 } else {
39 NOT_PRODUCT(_max_seq_number = (seq > _max_seq_number) ? seq : _max_seq_number;)
40 }
41 return seq;
42 }
43
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