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 #include "precompiled.hpp"
25 #include "logging/logLevel.hpp"
26 #include "logging/logOutputList.hpp"
27 #include "memory/allocation.inline.hpp"
28 #include "runtime/atomic.hpp"
29 #include "runtime/orderAccess.inline.hpp"
30 #include "utilities/globalDefinitions.hpp"
31
32 jint LogOutputList::increase_readers() {
33 jint result = Atomic::add(1, &_active_readers);
34 assert(_active_readers > 0, "Ensure we have consistent state");
35 return result;
36 }
37
38 jint LogOutputList::decrease_readers() {
39 jint result = Atomic::add(-1, &_active_readers);
40 assert(result >= 0, "Ensure we have consistent state");
41 return result;
42 }
43
44 void LogOutputList::wait_until_no_readers() const {
45 OrderAccess::storeload();
46 while (_active_readers != 0) {
47 // Busy wait
48 }
49 }
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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 #include "precompiled.hpp"
25 #include "logging/logLevel.hpp"
26 #include "logging/logOutputList.hpp"
27 #include "memory/allocation.inline.hpp"
28 #include "runtime/atomic.hpp"
29 #include "runtime/orderAccess.hpp"
30 #include "utilities/globalDefinitions.hpp"
31
32 jint LogOutputList::increase_readers() {
33 jint result = Atomic::add(1, &_active_readers);
34 assert(_active_readers > 0, "Ensure we have consistent state");
35 return result;
36 }
37
38 jint LogOutputList::decrease_readers() {
39 jint result = Atomic::add(-1, &_active_readers);
40 assert(result >= 0, "Ensure we have consistent state");
41 return result;
42 }
43
44 void LogOutputList::wait_until_no_readers() const {
45 OrderAccess::storeload();
46 while (_active_readers != 0) {
47 // Busy wait
48 }
49 }
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