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_IMPLEMENTATION_G1_G1COLLECTEDHEAP_INLINE_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1COLLECTEDHEAP_INLINE_HPP
27
28 #include "gc_implementation/g1/concurrentMark.hpp"
29 #include "gc_implementation/g1/g1CollectedHeap.hpp"
30 #include "gc_implementation/g1/g1AllocRegion.inline.hpp"
31 #include "gc_implementation/g1/g1CollectorPolicy.hpp"
32 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
33 #include "gc_implementation/g1/heapRegionManager.inline.hpp"
34 #include "gc_implementation/g1/heapRegionSet.inline.hpp"
35 #include "runtime/orderAccess.inline.hpp"
36 #include "utilities/taskqueue.hpp"
37
38 PLABStats* G1CollectedHeap::alloc_buffer_stats(InCSetState dest) {
39 switch (dest.value()) {
40 case InCSetState::Young:
41 return &_survivor_plab_stats;
42 case InCSetState::Old:
43 return &_old_plab_stats;
44 default:
45 ShouldNotReachHere();
46 return NULL; // Keep some compilers happy
47 }
48 }
49
50 size_t G1CollectedHeap::desired_plab_sz(InCSetState dest) {
51 size_t gclab_word_size = alloc_buffer_stats(dest)->desired_plab_sz();
271 res |= G1EvacuationFailureALotDuringMixedGC;
272 }
273 return res;
274 }
275
276 inline void
277 G1CollectedHeap::set_evacuation_failure_alot_for_current_gc() {
278 if (G1EvacuationFailureALot) {
279 // Note we can't assert that _evacuation_failure_alot_for_current_gc
280 // is clear here. It may have been set during a previous GC but that GC
281 // did not copy enough objects (i.e. G1EvacuationFailureALotCount) to
282 // trigger an evacuation failure and clear the flags and and counts.
283
284 // Check if we have gone over the interval.
285 const size_t gc_num = total_collections();
286 const size_t elapsed_gcs = gc_num - _evacuation_failure_alot_gc_number;
287
288 _evacuation_failure_alot_for_current_gc = (elapsed_gcs >= G1EvacuationFailureALotInterval);
289
290 // Now check if G1EvacuationFailureALot is enabled for the current GC type.
291 const bool gcs_are_young = g1_policy()->gcs_are_young();
292 const bool during_im = g1_policy()->during_initial_mark_pause();
293 const bool during_marking = mark_in_progress();
294
295 _evacuation_failure_alot_for_current_gc &=
296 evacuation_failure_alot_for_gc_type(gcs_are_young,
297 during_im,
298 during_marking);
299 }
300 }
301
302 inline bool G1CollectedHeap::evacuation_should_fail() {
303 if (!G1EvacuationFailureALot || !_evacuation_failure_alot_for_current_gc) {
304 return false;
305 }
306 // G1EvacuationFailureALot is in effect for current GC
307 // Access to _evacuation_failure_alot_count is not atomic;
308 // the value does not have to be exact.
309 if (++_evacuation_failure_alot_count < G1EvacuationFailureALotCount) {
310 return false;
311 }
312 _evacuation_failure_alot_count = 0;
313 return true;
|
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_IMPLEMENTATION_G1_G1COLLECTEDHEAP_INLINE_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1COLLECTEDHEAP_INLINE_HPP
27
28 #include "gc_implementation/g1/concurrentMark.hpp"
29 #include "gc_implementation/g1/g1CollectedHeap.hpp"
30 #include "gc_implementation/g1/g1AllocRegion.inline.hpp"
31 #include "gc_implementation/g1/g1CollectorPolicy.hpp"
32 #include "gc_implementation/g1/g1CollectorState.hpp"
33 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
34 #include "gc_implementation/g1/heapRegionManager.inline.hpp"
35 #include "gc_implementation/g1/heapRegionSet.inline.hpp"
36 #include "runtime/orderAccess.inline.hpp"
37 #include "utilities/taskqueue.hpp"
38
39 PLABStats* G1CollectedHeap::alloc_buffer_stats(InCSetState dest) {
40 switch (dest.value()) {
41 case InCSetState::Young:
42 return &_survivor_plab_stats;
43 case InCSetState::Old:
44 return &_old_plab_stats;
45 default:
46 ShouldNotReachHere();
47 return NULL; // Keep some compilers happy
48 }
49 }
50
51 size_t G1CollectedHeap::desired_plab_sz(InCSetState dest) {
52 size_t gclab_word_size = alloc_buffer_stats(dest)->desired_plab_sz();
272 res |= G1EvacuationFailureALotDuringMixedGC;
273 }
274 return res;
275 }
276
277 inline void
278 G1CollectedHeap::set_evacuation_failure_alot_for_current_gc() {
279 if (G1EvacuationFailureALot) {
280 // Note we can't assert that _evacuation_failure_alot_for_current_gc
281 // is clear here. It may have been set during a previous GC but that GC
282 // did not copy enough objects (i.e. G1EvacuationFailureALotCount) to
283 // trigger an evacuation failure and clear the flags and and counts.
284
285 // Check if we have gone over the interval.
286 const size_t gc_num = total_collections();
287 const size_t elapsed_gcs = gc_num - _evacuation_failure_alot_gc_number;
288
289 _evacuation_failure_alot_for_current_gc = (elapsed_gcs >= G1EvacuationFailureALotInterval);
290
291 // Now check if G1EvacuationFailureALot is enabled for the current GC type.
292 const bool gcs_are_young = collector_state()->gcs_are_young();
293 const bool during_im = collector_state()->during_initial_mark_pause();
294 const bool during_marking = collector_state()->mark_in_progress();
295
296 _evacuation_failure_alot_for_current_gc &=
297 evacuation_failure_alot_for_gc_type(gcs_are_young,
298 during_im,
299 during_marking);
300 }
301 }
302
303 inline bool G1CollectedHeap::evacuation_should_fail() {
304 if (!G1EvacuationFailureALot || !_evacuation_failure_alot_for_current_gc) {
305 return false;
306 }
307 // G1EvacuationFailureALot is in effect for current GC
308 // Access to _evacuation_failure_alot_count is not atomic;
309 // the value does not have to be exact.
310 if (++_evacuation_failure_alot_count < G1EvacuationFailureALotCount) {
311 return false;
312 }
313 _evacuation_failure_alot_count = 0;
314 return true;
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