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/g1CollectedHeap.hpp"
27 #include "gc/g1/g1HeapSizingPolicy.hpp"
28 #include "gc/g1/g1Analytics.hpp"
29 #include "logging/log.hpp"
30 #include "runtime/globals.hpp"
31 #include "utilities/debug.hpp"
32 #include "utilities/globalDefinitions.hpp"
33
34 G1HeapSizingPolicy::G1HeapSizingPolicy(const G1CollectedHeap* g1h, const G1Analytics* analytics) :
35 _g1h(g1h),
36 _analytics(analytics),
37 _num_prev_pauses_for_heuristics(analytics->number_of_recorded_pause_times()) {
38
39 assert(MinOverThresholdForGrowth < _num_prev_pauses_for_heuristics, "Threshold must be less than %u", _num_prev_pauses_for_heuristics);
40 clear_ratio_check_data();
41 }
42
43 void G1HeapSizingPolicy::clear_ratio_check_data() {
44 _ratio_over_threshold_count = 0;
45 _ratio_over_threshold_sum = 0.0;
46 _pauses_since_start = 0;
47 }
48
49 size_t G1HeapSizingPolicy::expansion_amount() {
50 double recent_gc_overhead = _analytics->recent_avg_pause_time_ratio() * 100.0;
51 double last_gc_overhead = _analytics->last_pause_time_ratio() * 100.0;
52 assert(GCTimeRatio > 0,
53 "we should have set it to a default value set_g1_gc_flags() "
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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/g1CollectedHeap.hpp"
27 #include "gc/g1/g1HeapSizingPolicy.hpp"
28 #include "gc/g1/g1Analytics.hpp"
29 #include "logging/log.hpp"
30 #include "runtime/globals.hpp"
31 #include "utilities/debug.hpp"
32 #include "utilities/globalDefinitions.hpp"
33
34 G1HeapSizingPolicy* G1HeapSizingPolicy::create(const G1CollectedHeap* g1h, const G1Analytics* analytics) {
35 return new G1HeapSizingPolicy(g1h, analytics);
36 }
37
38 G1HeapSizingPolicy::G1HeapSizingPolicy(const G1CollectedHeap* g1h, const G1Analytics* analytics) :
39 _g1h(g1h),
40 _analytics(analytics),
41 _num_prev_pauses_for_heuristics(analytics->number_of_recorded_pause_times()) {
42
43 assert(MinOverThresholdForGrowth < _num_prev_pauses_for_heuristics, "Threshold must be less than %u", _num_prev_pauses_for_heuristics);
44 clear_ratio_check_data();
45 }
46
47 void G1HeapSizingPolicy::clear_ratio_check_data() {
48 _ratio_over_threshold_count = 0;
49 _ratio_over_threshold_sum = 0.0;
50 _pauses_since_start = 0;
51 }
52
53 size_t G1HeapSizingPolicy::expansion_amount() {
54 double recent_gc_overhead = _analytics->recent_avg_pause_time_ratio() * 100.0;
55 double last_gc_overhead = _analytics->last_pause_time_ratio() * 100.0;
56 assert(GCTimeRatio > 0,
57 "we should have set it to a default value set_g1_gc_flags() "
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