215 // JVM/TI RedefineClasses() support:
216 // Remap the shared readonly space to shared readwrite, private if
217 // sharing is enabled. Simply returns true if sharing is not enabled
218 // or if the remapping has already been done by a prior call.
219 static bool remap_shared_readonly_as_readwrite() NOT_CDS_RETURN_(true);
220 static bool remapped_readwrite() {
221 CDS_ONLY(return _remapped_readwrite);
222 NOT_CDS(return false);
223 }
224
225 static void print_shared_spaces();
226
227 static bool try_link_class(InstanceKlass* ik, TRAPS);
228 static void link_and_cleanup_shared_classes(TRAPS);
229 static void check_shared_class_loader_type(InstanceKlass* ik);
230
231 // Allocate a block of memory from the "mc", "ro", or "rw" regions.
232 static char* misc_code_space_alloc(size_t num_bytes);
233 static char* read_only_space_alloc(size_t num_bytes);
234
235 template <typename T>
236 static Array<T>* new_ro_array(int length) {
237 #if INCLUDE_CDS
238 size_t byte_size = Array<T>::byte_sizeof(length, sizeof(T));
239 Array<T>* array = (Array<T>*)read_only_space_alloc(byte_size);
240 array->initialize(length);
241 return array;
242 #else
243 return NULL;
244 #endif
245 }
246
247 static address cds_i2i_entry_code_buffers(size_t total_size);
248
249 static address cds_i2i_entry_code_buffers() {
250 return _cds_i2i_entry_code_buffers;
251 }
252 static size_t cds_i2i_entry_code_buffers_size() {
253 return _cds_i2i_entry_code_buffers_size;
254 }
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215 // JVM/TI RedefineClasses() support:
216 // Remap the shared readonly space to shared readwrite, private if
217 // sharing is enabled. Simply returns true if sharing is not enabled
218 // or if the remapping has already been done by a prior call.
219 static bool remap_shared_readonly_as_readwrite() NOT_CDS_RETURN_(true);
220 static bool remapped_readwrite() {
221 CDS_ONLY(return _remapped_readwrite);
222 NOT_CDS(return false);
223 }
224
225 static void print_shared_spaces();
226
227 static bool try_link_class(InstanceKlass* ik, TRAPS);
228 static void link_and_cleanup_shared_classes(TRAPS);
229 static void check_shared_class_loader_type(InstanceKlass* ik);
230
231 // Allocate a block of memory from the "mc", "ro", or "rw" regions.
232 static char* misc_code_space_alloc(size_t num_bytes);
233 static char* read_only_space_alloc(size_t num_bytes);
234
235 static char* read_only_space_top();
236
237 template <typename T>
238 static Array<T>* new_ro_array(int length) {
239 #if INCLUDE_CDS
240 size_t byte_size = Array<T>::byte_sizeof(length, sizeof(T));
241 Array<T>* array = (Array<T>*)read_only_space_alloc(byte_size);
242 array->initialize(length);
243 return array;
244 #else
245 return NULL;
246 #endif
247 }
248
249 static address cds_i2i_entry_code_buffers(size_t total_size);
250
251 static address cds_i2i_entry_code_buffers() {
252 return _cds_i2i_entry_code_buffers;
253 }
254 static size_t cds_i2i_entry_code_buffers_size() {
255 return _cds_i2i_entry_code_buffers_size;
256 }
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