5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
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 //
26 // psPromotionManager is used by a single thread to manage object survival
27 // during a scavenge. The promotion manager contains thread local data only.
28 //
29 // NOTE! Be carefull when allocating the stacks on cheap. If you are going
30 // to use a promotion manager in more than one thread, the stacks MUST be
31 // on cheap. This can lead to memory leaks, though, as they are not auto
32 // deallocated.
33 //
34 // FIX ME FIX ME Add a destructor, and don't rely on the user to drain/flush/deallocate!
35 //
36
37 // Move to some global location
38 #define HAS_BEEN_MOVED 0x1501d01d
39 // End move to some global location
40
41 class MutableSpace;
42 class PSOldGen;
43 class ParCompactionManager;
44
174 drain_stacks_depth(totally_drain);
175 }
176 public:
177 void drain_stacks_cond_depth() {
178 if (claimed_stack_depth()->size() > _target_stack_size) {
179 drain_stacks_depth(false);
180 }
181 }
182 void drain_stacks_depth(bool totally_drain);
183
184 bool stacks_empty() {
185 return claimed_stack_depth()->is_empty();
186 }
187
188 inline void process_popped_location_depth(StarTask p);
189
190 template <class T> inline void claim_or_forward_depth(T* p);
191
192 TASKQUEUE_STATS_ONLY(inline void record_steal(StarTask& p);)
193 };
|
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
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 #ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSPROMOTIONMANAGER_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSPROMOTIONMANAGER_HPP
27
28 #include "gc_implementation/parallelScavenge/psPromotionLAB.hpp"
29 #include "memory/allocation.hpp"
30 #include "utilities/taskqueue.hpp"
31
32 //
33 // psPromotionManager is used by a single thread to manage object survival
34 // during a scavenge. The promotion manager contains thread local data only.
35 //
36 // NOTE! Be carefull when allocating the stacks on cheap. If you are going
37 // to use a promotion manager in more than one thread, the stacks MUST be
38 // on cheap. This can lead to memory leaks, though, as they are not auto
39 // deallocated.
40 //
41 // FIX ME FIX ME Add a destructor, and don't rely on the user to drain/flush/deallocate!
42 //
43
44 // Move to some global location
45 #define HAS_BEEN_MOVED 0x1501d01d
46 // End move to some global location
47
48 class MutableSpace;
49 class PSOldGen;
50 class ParCompactionManager;
51
181 drain_stacks_depth(totally_drain);
182 }
183 public:
184 void drain_stacks_cond_depth() {
185 if (claimed_stack_depth()->size() > _target_stack_size) {
186 drain_stacks_depth(false);
187 }
188 }
189 void drain_stacks_depth(bool totally_drain);
190
191 bool stacks_empty() {
192 return claimed_stack_depth()->is_empty();
193 }
194
195 inline void process_popped_location_depth(StarTask p);
196
197 template <class T> inline void claim_or_forward_depth(T* p);
198
199 TASKQUEUE_STATS_ONLY(inline void record_steal(StarTask& p);)
200 };
201
202 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSPROMOTIONMANAGER_HPP
|