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src/share/vm/gc/shared/concurrentGCThread.hpp

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rev 10297 : [mq]: webrev.01
rev 10298 : [mq]: webrev.02


  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_SHARED_CONCURRENTGCTHREAD_HPP
  26 #define SHARE_VM_GC_SHARED_CONCURRENTGCTHREAD_HPP
  27 
  28 #include "runtime/thread.hpp"
  29 #include "utilities/macros.hpp"
  30 
  31 class ConcurrentGCThread: public NamedThread {
  32   friend class VMStructs;
  33 
  34 protected:
  35   bool volatile _should_terminate;
  36   bool _has_terminated;
  37 
  38   // Create and start the thread (setting it's priority high.)
  39   void create_and_start();
  40 
  41   // Do initialization steps in the thread: record stack base and size,
  42   // init thread local storage, set JNI handle block.
  43   void initialize_in_thread();
  44 
  45   // Wait until Universe::is_fully_initialized();
  46   void wait_for_universe_init();
  47 
  48   // Record that the current thread is terminating, and will do more
  49   // concurrent work.
  50   void terminate();
  51   
  52   // Most implementations of ConcurrentGCThread use ConcurrentGCThread's termination protocol,
  53   // run(), and stop() methods, and provide specific implementations of run_service() and stop_service.
  54   // Otherwise run_service() and stop_service should not be called.)
  55   
  56   // Do the specific GC work. Called by run() after initialization complete.
  57   virtual void run_service() { ShouldNotReachHere(); }
  58   
  59   // Shut down the specific GC work. Called by stop() as part of termination protocol.
  60   virtual void stop_service() { ShouldNotReachHere(); }
  61 
  62 public:
  63   ConcurrentGCThread();
  64 
  65   // Tester
  66   bool is_ConcurrentGC_thread() const { return true; }
  67   
  68   virtual void run();
  69   
  70   // shutdown following termination protocol
  71   virtual void stop();
  72 };
  73 
  74 // The SurrogateLockerThread is used by concurrent GC threads for
  75 // manipulating Java monitors, in particular, currently for
  76 // manipulating the pending_list_lock. XXX
  77 class SurrogateLockerThread: public JavaThread {
  78   friend class VMStructs;
  79  public:
  80   enum SLT_msg_type {




  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_SHARED_CONCURRENTGCTHREAD_HPP
  26 #define SHARE_VM_GC_SHARED_CONCURRENTGCTHREAD_HPP
  27 
  28 #include "runtime/thread.hpp"
  29 #include "utilities/macros.hpp"
  30 
  31 class ConcurrentGCThread: public NamedThread {
  32   friend class VMStructs;
  33 
  34 protected:
  35   bool volatile _should_terminate;
  36   bool _has_terminated;
  37 
  38   // Create and start the thread (setting it's priority.)
  39   void create_and_start(ThreadPriority prio = NearMaxPriority);
  40 
  41   // Do initialization steps in the thread: record stack base and size,
  42   // init thread local storage, set JNI handle block.
  43   void initialize_in_thread();
  44 
  45   // Wait until Universe::is_fully_initialized();
  46   void wait_for_universe_init();
  47 
  48   // Record that the current thread is terminating, and will do more
  49   // concurrent work.
  50   void terminate();
  51 




  52   // Do the specific GC work. Called by run() after initialization complete.
  53   virtual void run_service() = 0;
  54 
  55   // Shut down the specific GC work. Called by stop() as part of termination protocol.
  56   virtual void stop_service()  = 0;
  57 
  58 public:
  59   ConcurrentGCThread();
  60 
  61   // Tester
  62   bool is_ConcurrentGC_thread() const { return true; }
  63 
  64   virtual void run();
  65 
  66   // shutdown following termination protocol
  67   virtual void stop();
  68 };
  69 
  70 // The SurrogateLockerThread is used by concurrent GC threads for
  71 // manipulating Java monitors, in particular, currently for
  72 // manipulating the pending_list_lock. XXX
  73 class SurrogateLockerThread: public JavaThread {
  74   friend class VMStructs;
  75  public:
  76   enum SLT_msg_type {


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