254   bool  verify_region_checksum(int i);
 255   void  close();
 256   bool  is_open() { return _file_open; }
 257   ReservedSpace reserve_shared_memory();
 258 
 259   // JVM/TI RedefineClasses() support:
 260   // Remap the shared readonly space to shared readwrite, private.
 261   bool  remap_shared_readonly_as_readwrite();
 262 
 263   // Errors.
 264   static void fail_stop(const char *msg, ...) ATTRIBUTE_PRINTF(1, 2);
 265   static void fail_continue(const char *msg, ...) ATTRIBUTE_PRINTF(1, 2);
 266 
 267   bool is_in_shared_region(const void* p, int idx) NOT_CDS_RETURN_(false);
 268   void print_shared_spaces() NOT_CDS_RETURN;
 269 
 270   // Stop CDS sharing and unmap CDS regions.
 271   static void stop_sharing_and_unmap(const char* msg);
 272 
 273   static void allocate_shared_path_table();

 274   bool validate_shared_path_table();
 275 
 276   static SharedClassPathEntry* shared_path(int index) {
 277     if (index < 0) {
 278       return NULL;
 279     }
 280     assert(index < _shared_path_table_size, "sanity");
 281     char* p = (char*)_shared_path_table->data();
 282     p += _shared_path_entry_size * index;
 283     return (SharedClassPathEntry*)p;
 284   }
 285 
 286   static const char* shared_path_name(int index) {
 287     assert(index >= 0, "Sanity");
 288     return shared_path(index)->name();
 289   }
 290 
 291   static int get_number_of_shared_paths() {
 292     return _shared_path_table_size;
 293   }

 254   bool  verify_region_checksum(int i);
 255   void  close();
 256   bool  is_open() { return _file_open; }
 257   ReservedSpace reserve_shared_memory();
 258 
 259   // JVM/TI RedefineClasses() support:
 260   // Remap the shared readonly space to shared readwrite, private.
 261   bool  remap_shared_readonly_as_readwrite();
 262 
 263   // Errors.
 264   static void fail_stop(const char *msg, ...) ATTRIBUTE_PRINTF(1, 2);
 265   static void fail_continue(const char *msg, ...) ATTRIBUTE_PRINTF(1, 2);
 266 
 267   bool is_in_shared_region(const void* p, int idx) NOT_CDS_RETURN_(false);
 268   void print_shared_spaces() NOT_CDS_RETURN;
 269 
 270   // Stop CDS sharing and unmap CDS regions.
 271   static void stop_sharing_and_unmap(const char* msg);
 272 
 273   static void allocate_shared_path_table();
 274   static void check_nonempty_dir_in_shared_path_table();
 275   bool validate_shared_path_table();
 276 
 277   static SharedClassPathEntry* shared_path(int index) {
 278     if (index < 0) {
 279       return NULL;
 280     }
 281     assert(index < _shared_path_table_size, "sanity");
 282     char* p = (char*)_shared_path_table->data();
 283     p += _shared_path_entry_size * index;
 284     return (SharedClassPathEntry*)p;
 285   }
 286 
 287   static const char* shared_path_name(int index) {
 288     assert(index >= 0, "Sanity");
 289     return shared_path(index)->name();
 290   }
 291 
 292   static int get_number_of_shared_paths() {
 293     return _shared_path_table_size;
 294   }