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_G1_G1ALLOCATOR_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1ALLOCATOR_HPP
27
28 #include "gc_implementation/g1/g1AllocationContext.hpp"
29 #include "gc_implementation/g1/g1AllocRegion.hpp"
30 #include "gc_implementation/g1/g1InCSetState.hpp"
31 #include "gc_implementation/shared/plab.hpp"
32 #include "gc_interface/collectedHeap.hpp"
33
34 class EvacuationInfo;
35
36 // Base class for G1 allocators.
37 class G1Allocator : public CHeapObj<mtGC> {
38 friend class VMStructs;
39 protected:
40 G1CollectedHeap* _g1h;
41
42 // Outside of GC pauses, the number of bytes used in all regions other
43 // than the current allocation region.
44 size_t _summary_bytes_used;
45
46 public:
47 G1Allocator(G1CollectedHeap* heap) :
48 _g1h(heap), _summary_bytes_used(0) { }
49
50 static G1Allocator* create_allocator(G1CollectedHeap* g1h);
51
52 virtual void init_mutator_alloc_region() = 0;
252 G1PLAB _surviving_alloc_buffer;
253 G1PLAB _tenured_alloc_buffer;
254 G1PLAB* _alloc_buffers[InCSetState::Num];
255
256 public:
257 G1DefaultParGCAllocator(G1CollectedHeap* g1h);
258
259 virtual G1PLAB* alloc_buffer(InCSetState dest, AllocationContext_t context) {
260 assert(dest.is_valid(),
261 err_msg("Allocation buffer index out-of-bounds: " CSETSTATE_FORMAT, dest.value()));
262 assert(_alloc_buffers[dest.value()] != NULL,
263 err_msg("Allocation buffer is NULL: " CSETSTATE_FORMAT, dest.value()));
264 return _alloc_buffers[dest.value()];
265 }
266
267 virtual void retire_alloc_buffers();
268
269 virtual void waste(size_t& wasted, size_t& undo_wasted);
270 };
271
272 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1ALLOCATOR_HPP
|
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_G1_G1ALLOCATOR_HPP
26 #define SHARE_VM_GC_G1_G1ALLOCATOR_HPP
27
28 #include "gc/g1/g1AllocRegion.hpp"
29 #include "gc/g1/g1AllocationContext.hpp"
30 #include "gc/g1/g1InCSetState.hpp"
31 #include "gc/shared/collectedHeap.hpp"
32 #include "gc/shared/plab.hpp"
33
34 class EvacuationInfo;
35
36 // Base class for G1 allocators.
37 class G1Allocator : public CHeapObj<mtGC> {
38 friend class VMStructs;
39 protected:
40 G1CollectedHeap* _g1h;
41
42 // Outside of GC pauses, the number of bytes used in all regions other
43 // than the current allocation region.
44 size_t _summary_bytes_used;
45
46 public:
47 G1Allocator(G1CollectedHeap* heap) :
48 _g1h(heap), _summary_bytes_used(0) { }
49
50 static G1Allocator* create_allocator(G1CollectedHeap* g1h);
51
52 virtual void init_mutator_alloc_region() = 0;
252 G1PLAB _surviving_alloc_buffer;
253 G1PLAB _tenured_alloc_buffer;
254 G1PLAB* _alloc_buffers[InCSetState::Num];
255
256 public:
257 G1DefaultParGCAllocator(G1CollectedHeap* g1h);
258
259 virtual G1PLAB* alloc_buffer(InCSetState dest, AllocationContext_t context) {
260 assert(dest.is_valid(),
261 err_msg("Allocation buffer index out-of-bounds: " CSETSTATE_FORMAT, dest.value()));
262 assert(_alloc_buffers[dest.value()] != NULL,
263 err_msg("Allocation buffer is NULL: " CSETSTATE_FORMAT, dest.value()));
264 return _alloc_buffers[dest.value()];
265 }
266
267 virtual void retire_alloc_buffers();
268
269 virtual void waste(size_t& wasted, size_t& undo_wasted);
270 };
271
272 #endif // SHARE_VM_GC_G1_G1ALLOCATOR_HPP
|