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src/hotspot/share/runtime/serviceThread.hpp

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  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_RUNTIME_SERVICETHREAD_HPP
  26 #define SHARE_RUNTIME_SERVICETHREAD_HPP
  27 
  28 #include "runtime/thread.hpp"
  29 
  30 // A JavaThread for low memory detection support and JVMTI
  31 // compiled-method-load events.


  32 class ServiceThread : public JavaThread {
  33   friend class VMStructs;
  34  private:
  35 
  36   static ServiceThread* _instance;
  37 
  38   static void service_thread_entry(JavaThread* thread, TRAPS);
  39   ServiceThread(ThreadFunction entry_point) : JavaThread(entry_point) {};
  40 
  41  public:
  42   static void initialize();
  43 
  44   // Hide this thread from external view.
  45   bool is_hidden_from_external_view() const      { return true; }
  46 
  47   // Returns true if the passed thread is the service thread.
  48   static bool is_service_thread(Thread* thread);
  49 };
  50 
  51 #endif // SHARE_RUNTIME_SERVICETHREAD_HPP


  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_RUNTIME_SERVICETHREAD_HPP
  26 #define SHARE_RUNTIME_SERVICETHREAD_HPP
  27 
  28 #include "runtime/thread.hpp"
  29 
  30 // A hidden from external view JavaThread for JVMTI compiled-method-load
  31 // events, oop storage cleanup, and the maintainance of string, symbol,
  32 // protection domain, and resolved method tables.
  33 
  34 class ServiceThread : public JavaThread {
  35   friend class VMStructs;
  36  private:
  37 
  38   static ServiceThread* _instance;
  39 
  40   static void service_thread_entry(JavaThread* thread, TRAPS);
  41   ServiceThread(ThreadFunction entry_point) : JavaThread(entry_point) {};
  42 
  43  public:
  44   static void initialize();
  45 
  46   // Hide this thread from external view.
  47   bool is_hidden_from_external_view() const      { return true; }
  48 
  49   // Returns true if the passed thread is the service thread.
  50   static bool is_service_thread(Thread* thread);
  51 };
  52 
  53 #endif // SHARE_RUNTIME_SERVICETHREAD_HPP
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