1401 }
1402 seen_dead_loader = true;
1403 loaders_removed++;
1404 ClassLoaderData* dead = data;
1405 dead->unload();
1406 data = data->next();
1407 // Remove from loader list.
1408 // This class loader data will no longer be found
1409 // in the ClassLoaderDataGraph.
1410 if (prev != NULL) {
1411 prev->set_next(data);
1412 } else {
1413 assert(dead == _head, "sanity check");
1414 _head = data;
1415 }
1416 dead->set_next(_unloading);
1417 _unloading = dead;
1418 }
1419
1420 if (seen_dead_loader) {
1421 data = _head;
1422 while (data != NULL) {
1423 // Remove entries in the dictionary of live class loader that have
1424 // initiated loading classes in a dead class loader.
1425 if (data->dictionary() != NULL) {
1426 data->dictionary()->do_unloading();
1427 }
1428 // Walk a ModuleEntry's reads, and a PackageEntry's exports
1429 // lists to determine if there are modules on those lists that are now
1430 // dead and should be removed. A module's life cycle is equivalent
1431 // to its defining class loader's life cycle. Since a module is
1432 // considered dead if its class loader is dead, these walks must
1433 // occur after each class loader's aliveness is determined.
1434 if (data->packages() != NULL) {
1435 data->packages()->purge_all_package_exports();
1436 }
1437 if (data->modules_defined()) {
1438 data->modules()->purge_all_module_reads();
1439 }
1440 data = data->next();
1441 }
1442 SymbolTable::do_check_concurrent_work();
1443 JFR_ONLY(post_class_unload_events();)
1444 }
1445
1446 log_debug(class, loader, data)("do_unloading: loaders processed %u, loaders removed %u", loaders_processed, loaders_removed);
1447
1448 return seen_dead_loader;
1449 }
1450
1451 // There's at least one dead class loader. Purge refererences of healthy module
1452 // reads lists and package export lists to modules belonging to dead loaders.
1453 void ClassLoaderDataGraph::clean_module_and_package_info() {
1454 ClassLoaderData* data = _head;
1455 while (data != NULL) {
1456 // Remove entries in the dictionary of live class loader that have
1457 // initiated loading classes in a dead class loader.
1458 if (data->dictionary() != NULL) {
1459 data->dictionary()->do_unloading();
1460 }
1461 // Walk a ModuleEntry's reads, and a PackageEntry's exports
1462 // lists to determine if there are modules on those lists that are now
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1401 }
1402 seen_dead_loader = true;
1403 loaders_removed++;
1404 ClassLoaderData* dead = data;
1405 dead->unload();
1406 data = data->next();
1407 // Remove from loader list.
1408 // This class loader data will no longer be found
1409 // in the ClassLoaderDataGraph.
1410 if (prev != NULL) {
1411 prev->set_next(data);
1412 } else {
1413 assert(dead == _head, "sanity check");
1414 _head = data;
1415 }
1416 dead->set_next(_unloading);
1417 _unloading = dead;
1418 }
1419
1420 if (seen_dead_loader) {
1421 JFR_ONLY(post_class_unload_events();)
1422 }
1423
1424 log_debug(class, loader, data)("do_unloading: loaders processed %u, loaders removed %u", loaders_processed, loaders_removed);
1425
1426 return seen_dead_loader;
1427 }
1428
1429 // There's at least one dead class loader. Purge refererences of healthy module
1430 // reads lists and package export lists to modules belonging to dead loaders.
1431 void ClassLoaderDataGraph::clean_module_and_package_info() {
1432 ClassLoaderData* data = _head;
1433 while (data != NULL) {
1434 // Remove entries in the dictionary of live class loader that have
1435 // initiated loading classes in a dead class loader.
1436 if (data->dictionary() != NULL) {
1437 data->dictionary()->do_unloading();
1438 }
1439 // Walk a ModuleEntry's reads, and a PackageEntry's exports
1440 // lists to determine if there are modules on those lists that are now
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