13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "memory/metaspace/freeBlocks.hpp"
28 #include "utilities/debug.hpp"
29 #include "utilities/globalDefinitions.hpp"
30
31 namespace metaspace {
32
33 void FreeBlocks::add_block(MetaWord* p, size_t word_size) {
34 if (word_size > MaxSmallBlocksWordSize) {
35 _tree.add_block(p, word_size);
36 } else {
37 _small_blocks.add_block(p, word_size);
38 }
39 }
40
41 MetaWord* FreeBlocks::remove_block(size_t requested_word_size) {
42 size_t real_size = 0;
43 MetaWord* p = nullptr;
44 if (requested_word_size > MaxSmallBlocksWordSize) {
45 p = _tree.remove_block(requested_word_size, &real_size);
46 } else {
47 p = _small_blocks.remove_block(requested_word_size, &real_size);
48 }
49 if (p != nullptr) {
50 // Blocks which are larger than a certain threshold are split and
51 // the remainder is handed back to the manager.
52 const size_t waste = real_size - requested_word_size;
53 if (waste >= MinWordSize) {
54 add_block(p + requested_word_size, waste);
55 }
56 }
57 return p;
58 }
59
60 } // namespace metaspace
61
|
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "memory/metaspace/freeBlocks.hpp"
28 #include "utilities/debug.hpp"
29 #include "utilities/globalDefinitions.hpp"
30
31 namespace metaspace {
32
33 void FreeBlocks::add_block(MetaBlock bl) {
34 if (bl.word_size() > _small_blocks.MaxWordSize) {
35 _tree.add_block(bl);
36 } else {
37 _small_blocks.add_block(bl);
38 }
39 }
40
41 MetaBlock FreeBlocks::remove_block(size_t requested_word_size) {
42 size_t real_size = 0;
43 MetaBlock bl;
44 if (requested_word_size > _small_blocks.MaxWordSize) {
45 bl = _tree.remove_block(requested_word_size);
46 } else {
47 bl = _small_blocks.remove_block(requested_word_size);
48 }
49 return bl;
50 }
51
52 } // namespace metaspace
|