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src/hotspot/share/gc/z/zNMethodData.hpp


4  * This code is free software; you can redistribute it and/or modify it                                                              
5  * under the terms of the GNU General Public License version 2 only, as                                                              
6  * published by the Free Software Foundation.                                                                                        
7  *                                                                                                                                   
8  * This code is distributed in the hope that it will be useful, but WITHOUT                                                          
9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or                                                             
10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License                                                             
11  * version 2 for more details (a copy is included in the LICENSE file that                                                           
12  * accompanied this code).                                                                                                           
13  *                                                                                                                                   
14  * You should have received a copy of the GNU General Public License version                                                         
15  * 2 along with this work; if not, write to the Free Software Foundation,                                                            
16  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.                                                                     
17  *                                                                                                                                   
18  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA                                                           
19  * or visit www.oracle.com if you need additional information or have any                                                            
20  * questions.                                                                                                                        
21  */                                                                                                                                  
22 
23 #include "gc/z/zLock.hpp"                                                                                                            
                                                                                                                                     
24 #include "oops/oopsHierarchy.hpp"                                                                                                    
25 #include "utilities/globalDefinitions.hpp"                                                                                           
26 
27 #ifndef SHARE_GC_Z_ZNMETHODDATA_HPP                                                                                                  
28 #define SHARE_GC_Z_ZNMETHODDATA_HPP                                                                                                  
29 
30 class nmethod;                                                                                                                       
31 template <typename T> class GrowableArray;                                                                                           
32 
33 class ZNMethodDataOops {                                                                                                             
34 private:                                                                                                                             
35   const size_t _nimmediates;                                                                                                         
36   bool         _has_non_immediates;                                                                                                  
37 
38   static size_t header_size();                                                                                                       
39 
40   ZNMethodDataOops(const GrowableArray<oop*>& immediates, bool has_non_immediates);                                                  
41 
42 public:                                                                                                                              
43   static ZNMethodDataOops* create(const GrowableArray<oop*>& immediates, bool has_non_immediates);                                   
44   static void destroy(ZNMethodDataOops* oops);                                                                                       
45 
46   size_t immediates_count() const;                                                                                                   
47   oop** immediates_begin() const;                                                                                                    
48   oop** immediates_end() const;                                                                                                      
49 
50   bool has_non_immediates() const;                                                                                                   
51 };                                                                                                                                   
52 
53 class ZNMethodData {                                                                                                                 
54 private:                                                                                                                             
55   ZReentrantLock             _lock;                                                                                                  
56   ZNMethodDataOops* volatile _oops;                                                                                                  
57 
58   ZNMethodData(nmethod* nm);                                                                                                         
59                                                                                                                                      
60 public:                                                                                                                              
61   static ZNMethodData* create(nmethod* nm);                                                                                          
62   static void destroy(ZNMethodData* data);                                                                                           
63 
64   ZReentrantLock* lock();                                                                                                            
65 
66   ZNMethodDataOops* oops() const;                                                                                                    
67   ZNMethodDataOops* swap_oops(ZNMethodDataOops* oops);                                                                               
68 };                                                                                                                                   
69 
70 #endif // SHARE_GC_Z_ZNMETHODDATA_HPP                                                                                                

4  * This code is free software; you can redistribute it and/or modify it
5  * under the terms of the GNU General Public License version 2 only, as
6  * published by the Free Software Foundation.
7  *
8  * This code is distributed in the hope that it will be useful, but WITHOUT
9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
11  * version 2 for more details (a copy is included in the LICENSE file that
12  * accompanied this code).
13  *
14  * You should have received a copy of the GNU General Public License version
15  * 2 along with this work; if not, write to the Free Software Foundation,
16  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17  *
18  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19  * or visit www.oracle.com if you need additional information or have any
20  * questions.
21  */
22 
23 #include "gc/z/zLock.hpp"
24 #include "memory/allocation.hpp"
25 #include "oops/oopsHierarchy.hpp"
26 #include "utilities/globalDefinitions.hpp"
27 
28 #ifndef SHARE_GC_Z_ZNMETHODDATA_HPP
29 #define SHARE_GC_Z_ZNMETHODDATA_HPP
30 
31 class nmethod;
32 template <typename T> class GrowableArray;
33 
34 class ZNMethodDataOops {
35 private:
36   const size_t _nimmediates;
37   bool         _has_non_immediates;
38 
39   static size_t header_size();
40 
41   ZNMethodDataOops(const GrowableArray<oop*>& immediates, bool has_non_immediates);
42 
43 public:
44   static ZNMethodDataOops* create(const GrowableArray<oop*>& immediates, bool has_non_immediates);
45   static void destroy(ZNMethodDataOops* oops);
46 
47   size_t immediates_count() const;
48   oop** immediates_begin() const;
49   oop** immediates_end() const;
50 
51   bool has_non_immediates() const;
52 };
53 
54 class ZNMethodData : public CHeapObj<mtGC> {
55 private:
56   ZReentrantLock             _lock;
57   ZNMethodDataOops* volatile _oops;
58 


59 public:
60   ZNMethodData();
61   ~ZNMethodData();
62 
63   ZReentrantLock* lock();
64 
65   ZNMethodDataOops* oops() const;
66   ZNMethodDataOops* swap_oops(ZNMethodDataOops* oops);
67 };
68 
69 #endif // SHARE_GC_Z_ZNMETHODDATA_HPP
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