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 "gc/g1/g1OldGenAllocationTracker.hpp"
27
28 G1OldGenAllocationTracker::G1OldGenAllocationTracker() :
29 _last_cycle_old_bytes(0),
30 _last_cycle_duration(0.0),
31 _allocated_bytes_since_last_gc(0) {
32 }
33
34 void G1OldGenAllocationTracker::reset_after_full_gc() {
35 _last_cycle_duration = 0;
36 reset_cycle_after_gc();
37 }
38
39 void G1OldGenAllocationTracker::reset_after_young_gc(double allocation_duration_s) {
40 _last_cycle_duration = allocation_duration_s;
41 reset_cycle_after_gc();
42 }
|
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 "gc/g1/g1OldGenAllocationTracker.hpp"
27 #include "logging/log.hpp"
28
29 G1OldGenAllocationTracker::G1OldGenAllocationTracker() :
30 _last_period_old_gen_bytes(0),
31 _last_period_old_gen_growth(0),
32 _humongous_bytes_after_last_gc(0),
33 _allocated_bytes_since_last_gc(0),
34 _allocated_humongous_bytes_since_last_gc(0) {
35 }
36
37 void G1OldGenAllocationTracker::reset_after_gc(size_t humongous_bytes_after_gc) {
38 // Calculate actual increase in old, taking eager reclaim into consideration.
39 size_t last_period_humongous_increase = 0;
40 if (humongous_bytes_after_gc > _humongous_bytes_after_last_gc) {
41 last_period_humongous_increase = humongous_bytes_after_gc - _humongous_bytes_after_last_gc;
42 assert(last_period_humongous_increase <= _allocated_humongous_bytes_since_last_gc,
43 "Increase larger than allocated " SIZE_FORMAT " <= " SIZE_FORMAT,
44 last_period_humongous_increase, _allocated_humongous_bytes_since_last_gc);
45 }
46 _last_period_old_gen_growth = _allocated_bytes_since_last_gc + last_period_humongous_increase;
47
48 // Calculate and record needed values.
49 _last_period_old_gen_bytes = _allocated_bytes_since_last_gc + _allocated_humongous_bytes_since_last_gc;
50 _humongous_bytes_after_last_gc = humongous_bytes_after_gc;
51
52 log_debug(gc, alloc, stats)("Old generation allocation in the last mutator period, "
53 "old gen allocated: " SIZE_FORMAT "B, humongous allocated: " SIZE_FORMAT "B,"
54 "old gen growth: " SIZE_FORMAT "B.",
55 _allocated_bytes_since_last_gc,
56 _allocated_humongous_bytes_since_last_gc,
57 _last_period_old_gen_growth);
58
59 // Reset for next mutator period.
60 _allocated_bytes_since_last_gc = 0;
61 _allocated_humongous_bytes_since_last_gc = 0;
62 }
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