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src/hotspot/share/cds/classListWriter.hpp

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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_CDS_CLASSLISTWRITER_HPP
26 #define SHARE_CDS_CLASSLISTWRITER_HPP
27 
28 #include "runtime/javaThread.hpp"
29 #include "runtime/mutexLocker.hpp"
30 #include "utilities/ostream.hpp"
31 
32 class ClassFileStream;
33 
34 class ClassListWriter {
35 #if INCLUDE_CDS
36   class IDTable;


37   static fileStream* _classlist_file;
38   static IDTable* _id_table;
39   static int _total_ids;
40   MutexLocker _locker;
41 
42   static int get_id(const InstanceKlass* k);
43   static bool has_id(const InstanceKlass* k);
44   static void assert_locked() { assert_lock_strong(ClassListFile_lock); }



45 public:
46   ClassListWriter() : _locker(Thread::current(), ClassListFile_lock, Mutex::_no_safepoint_check_flag) {}
47 
48   outputStream* stream() {
49     return _classlist_file;
50   }
51 
52   void handle_class_unloading(const InstanceKlass* klass);
53 
54   static bool is_enabled() {
55     return _classlist_file != nullptr && _classlist_file->is_open();
56   }
57 
58 #else
59 public:
60   static bool is_enabled() {
61     return false;
62   }
63 #endif // INCLUDE_CDS
64 
65 
66   static void init() NOT_CDS_RETURN;
67   static void write(const InstanceKlass* k, const ClassFileStream* cfs) NOT_CDS_RETURN;
68   static void write_to_stream(const InstanceKlass* k, outputStream* stream, const ClassFileStream* cfs = nullptr) NOT_CDS_RETURN;



69   static void delete_classlist() NOT_CDS_RETURN;
70 };
71 
72 #endif // SHARE_CDS_CLASSLISTWRITER_HPP

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_CDS_CLASSLISTWRITER_HPP
26 #define SHARE_CDS_CLASSLISTWRITER_HPP
27 
28 #include "runtime/javaThread.hpp"
29 #include "runtime/mutexLocker.hpp"
30 #include "utilities/ostream.hpp"
31 
32 class ClassFileStream;
33 
34 class ClassListWriter {
35 #if INCLUDE_CDS
36   class IDTable;
37   class WriteResolveConstantsCLDClosure;
38 
39   static fileStream* _classlist_file;
40   static IDTable* _id_table;
41   static int _total_ids;
42   MutexLocker _locker;
43 
44   static int get_id(const InstanceKlass* k);
45   static bool has_id(const InstanceKlass* k);
46   static void assert_locked() { assert_lock_strong(ClassListFile_lock); }
47   static void write_resolved_constants_for(InstanceKlass* klass);
48   static void write_reflection_data_for(InstanceKlass* klass);
49   static void write_loader_negative_lookup_cache_for(oop loader, const char* loader_type);
50 public:
51   ClassListWriter() : _locker(Thread::current(), ClassListFile_lock, Mutex::_no_safepoint_check_flag) {}
52 
53   outputStream* stream() {
54     return _classlist_file;
55   }
56 
57   void handle_class_unloading(const InstanceKlass* klass);
58 
59   static bool is_enabled() {
60     return _classlist_file != nullptr && _classlist_file->is_open();
61   }
62 
63 #else
64 public:
65   static bool is_enabled() {
66     return false;
67   }
68 #endif // INCLUDE_CDS
69 
70 
71   static void init() NOT_CDS_RETURN;
72   static void write(const InstanceKlass* k, const ClassFileStream* cfs) NOT_CDS_RETURN;
73   static void write_to_stream(const InstanceKlass* k, outputStream* stream, const ClassFileStream* cfs = nullptr) NOT_CDS_RETURN;
74   static void write_resolved_constants() NOT_CDS_RETURN;
75   static void write_reflection_data() NOT_CDS_RETURN;
76   static void write_loader_negative_lookup_cache() NOT_CDS_RETURN;
77   static void delete_classlist() NOT_CDS_RETURN;
78 };
79 
80 #endif // SHARE_CDS_CLASSLISTWRITER_HPP
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