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_RUNTIME_VMTHREAD_HPP
  26 #define SHARE_VM_RUNTIME_VMTHREAD_HPP
  27 
  28 #include "runtime/perfData.hpp"

  29 #include "runtime/vm_operations.hpp"
  30 #ifdef TARGET_OS_FAMILY_linux
  31 # include "thread_linux.inline.hpp"
  32 #endif
  33 #ifdef TARGET_OS_FAMILY_solaris
  34 # include "thread_solaris.inline.hpp"
  35 #endif
  36 #ifdef TARGET_OS_FAMILY_windows
  37 # include "thread_windows.inline.hpp"
  38 #endif
  39 #ifdef TARGET_OS_FAMILY_bsd
  40 # include "thread_bsd.inline.hpp"
  41 #endif
  42 
  43 //
  44 // Prioritized queue of VM operations.
  45 //
  46 // Encapsulates both queue management and
  47 // and priority policy
  48 //
  49 class VMOperationQueue : public CHeapObj<mtInternal> {
  50  private:
  51   enum Priorities {
  52      SafepointPriority, // Highest priority (operation executed at a safepoint)
  53      MediumPriority,    // Medium priority
  54      nof_priorities
  55   };
  56 
  57   // We maintain a doubled linked list, with explicit count.
  58   int           _queue_length[nof_priorities];
  59   int           _queue_counter;
  60   VM_Operation* _queue       [nof_priorities];
  61   // we also allow the vmThread to register the ops it has drained so we

   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_RUNTIME_VMTHREAD_HPP
  26 #define SHARE_VM_RUNTIME_VMTHREAD_HPP
  27 
  28 #include "runtime/perfData.hpp"
  29 #include "runtime/thread.inline.hpp"
  30 #include "runtime/vm_operations.hpp"












  31 
  32 //
  33 // Prioritized queue of VM operations.
  34 //
  35 // Encapsulates both queue management and
  36 // and priority policy
  37 //
  38 class VMOperationQueue : public CHeapObj<mtInternal> {
  39  private:
  40   enum Priorities {
  41      SafepointPriority, // Highest priority (operation executed at a safepoint)
  42      MediumPriority,    // Medium priority
  43      nof_priorities
  44   };
  45 
  46   // We maintain a doubled linked list, with explicit count.
  47   int           _queue_length[nof_priorities];
  48   int           _queue_counter;
  49   VM_Operation* _queue       [nof_priorities];
  50   // we also allow the vmThread to register the ops it has drained so we