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 #include "precompiled.hpp"
26 #include "code/codeBlob.hpp"
27 #include "code/stubs.hpp"
28 #include "memory/allocation.inline.hpp"
29 #include "oops/oop.inline.hpp"
30 #include "runtime/mutexLocker.hpp"
31
32
33 // Implementation of StubQueue
34 //
35 // Standard wrap-around queue implementation; the queue dimensions
36 // are specified by the _queue_begin & _queue_end indices. The queue
37 // can be in two states (transparent to the outside):
38 //
39 // a) contiguous state: all queue entries in one block (or empty)
40 //
41 // Queue: |...|XXXXXXX|...............|
42 // ^0 ^begin ^end ^size = limit
43 // |_______|
44 // one block
45 //
46 // b) non-contiguous state: queue entries in two blocks
47 //
48 // Queue: |XXX|.......|XXXXXXX|.......|
49 // ^0 ^end ^begin ^limit ^size
50 // |___| |_______|
|
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 #include "precompiled.hpp"
26 #include "code/codeBlob.hpp"
27 #include "code/stubs.hpp"
28 #include "memory/allocation.inline.hpp"
29 #include "oops/oop.inline.hpp"
30 #include "runtime/mutexLocker.hpp"
31 #include "utilities/align.hpp"
32
33
34 // Implementation of StubQueue
35 //
36 // Standard wrap-around queue implementation; the queue dimensions
37 // are specified by the _queue_begin & _queue_end indices. The queue
38 // can be in two states (transparent to the outside):
39 //
40 // a) contiguous state: all queue entries in one block (or empty)
41 //
42 // Queue: |...|XXXXXXX|...............|
43 // ^0 ^begin ^end ^size = limit
44 // |_______|
45 // one block
46 //
47 // b) non-contiguous state: queue entries in two blocks
48 //
49 // Queue: |XXX|.......|XXXXXXX|.......|
50 // ^0 ^end ^begin ^limit ^size
51 // |___| |_______|
|