1348  private:
1349   // Support for thread handshake operations
1350   HandshakeState _handshake;
1351  public:
1352   void set_handshake_operation(HandshakeOperation* op) {
1353     _handshake.set_operation(op);
1354   }
1355 
1356   bool has_handshake() const {
1357     return _handshake.has_operation();
1358   }
1359 
1360   void handshake_process_by_self() {
1361     _handshake.process_by_self();
1362   }
1363 
1364   HandshakeState::ProcessResult handshake_try_process(HandshakeOperation* op) {
1365     return _handshake.try_process(op);
1366   }
1367 
1368 #ifdef ASSERT
1369   Thread* active_handshaker() const {
1370     return _handshake.active_handshaker();
1371   }
1372 #endif
1373 
1374   // Suspend/resume support for JavaThread
1375  private:
1376   inline void set_ext_suspended();
1377   inline void clear_ext_suspended();
1378 
1379  public:
1380   void java_suspend(); // higher-level suspension logic called by the public APIs
1381   void java_resume();  // higher-level resume logic called by the public APIs
1382   int  java_suspend_self(); // low-level self-suspension mechanics
1383 
1384  private:
1385   // mid-level wrapper around java_suspend_self to set up correct state and
1386   // check for a pending safepoint at the end
1387   void java_suspend_self_with_safepoint_check();
1388 
1389  public:
1390   void check_and_wait_while_suspended() {
1391     assert(JavaThread::current() == this, "sanity check");
1392 

1348  private:
1349   // Support for thread handshake operations
1350   HandshakeState _handshake;
1351  public:
1352   void set_handshake_operation(HandshakeOperation* op) {
1353     _handshake.set_operation(op);
1354   }
1355 
1356   bool has_handshake() const {
1357     return _handshake.has_operation();
1358   }
1359 
1360   void handshake_process_by_self() {
1361     _handshake.process_by_self();
1362   }
1363 
1364   HandshakeState::ProcessResult handshake_try_process(HandshakeOperation* op) {
1365     return _handshake.try_process(op);
1366   }
1367 

1368   Thread* active_handshaker() const {
1369     return _handshake.active_handshaker();
1370   }

1371 
1372   // Suspend/resume support for JavaThread
1373  private:
1374   inline void set_ext_suspended();
1375   inline void clear_ext_suspended();
1376 
1377  public:
1378   void java_suspend(); // higher-level suspension logic called by the public APIs
1379   void java_resume();  // higher-level resume logic called by the public APIs
1380   int  java_suspend_self(); // low-level self-suspension mechanics
1381 
1382  private:
1383   // mid-level wrapper around java_suspend_self to set up correct state and
1384   // check for a pending safepoint at the end
1385   void java_suspend_self_with_safepoint_check();
1386 
1387  public:
1388   void check_and_wait_while_suspended() {
1389     assert(JavaThread::current() == this, "sanity check");
1390