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 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHDEGENERATEDGC_HPP
26 #define SHARE_GC_SHENANDOAH_SHENANDOAHDEGENERATEDGC_HPP
27
28 #include "gc/shenandoah/shenandoahGC.hpp"
29
30 class VM_ShenandoahDegeneratedGC;
31
32 class ShenandoahDegenGC : public ShenandoahGC {
33 friend class VM_ShenandoahDegeneratedGC;
34 private:
35 const ShenandoahDegenPoint _degen_point;
36
37 public:
38 ShenandoahDegenGC(ShenandoahDegenPoint degen_point);
39 bool collect(GCCause::Cause cause);
40
41 private:
42 void vmop_degenerated();
43 void entry_degenerated();
44 void op_degenerated();
45
46 void op_reset();
47 void op_mark();
48 void op_finish_mark();
49 void op_prepare_evacuation();
50 void op_cleanup_early();
51 void op_evacuate();
52 void op_init_updaterefs();
53 void op_updaterefs();
54 void op_update_roots();
55 void op_cleanup_complete();
56
57 // Fail handling
58 void op_degenerated_futile();
59 void op_degenerated_fail();
60
61 const char* degen_event_message(ShenandoahDegenPoint point) const;
62 };
63
64 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHDEGENERATEDGC_HPP
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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 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHDEGENERATEDGC_HPP
26 #define SHARE_GC_SHENANDOAH_SHENANDOAHDEGENERATEDGC_HPP
27
28 #include "gc/shenandoah/shenandoahGC.hpp"
29
30 class VM_ShenandoahDegeneratedGC;
31 class ShenandoahGeneration;
32
33 class ShenandoahDegenGC : public ShenandoahGC {
34 friend class VM_ShenandoahDegeneratedGC;
35 private:
36 const ShenandoahDegenPoint _degen_point;
37 ShenandoahGeneration* _generation;
38 bool _abbreviated;
39 size_t _consecutive_degen_with_bad_progress;
40
41 public:
42 ShenandoahDegenGC(ShenandoahDegenPoint degen_point, ShenandoahGeneration* generation);
43 bool collect(GCCause::Cause cause);
44
45 private:
46 void vmop_degenerated();
47 void entry_degenerated();
48 void op_degenerated();
49
50 void op_reset();
51 void op_mark();
52 void op_finish_mark();
53 void op_prepare_evacuation();
54 void op_cleanup_early();
55
56 void op_evacuate();
57 void op_init_update_refs();
58 void op_update_refs();
59 void op_update_roots();
60 void op_cleanup_complete();
61
62 // Fail handling
63 void op_degenerated_futile();
64 void op_degenerated_fail();
65
66 // Turns this degenerated cycle into a full gc without leaving the safepoint
67 void upgrade_to_full();
68
69 const char* degen_event_message(ShenandoahDegenPoint point) const;
70
71 bool has_in_place_promotions(const ShenandoahHeap* heap) const;
72 };
73
74 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHDEGENERATEDGC_HPP
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