src/hotspot/share/classfile/classLoaderData.cpp
Index Unified diffs Context diffs Sdiffs Wdiffs Patch New Old Previous File Next File
*** old/src/hotspot/share/classfile/classLoaderData.cpp	Wed Nov  1 11:21:33 2017
--- new/src/hotspot/share/classfile/classLoaderData.cpp	Wed Nov  1 11:21:33 2017

*** 602,645 **** --- 602,632 ---- return modules; } const int _boot_loader_dictionary_size = 1009; const int _default_loader_dictionary_size = 107; const int _prime_array_size = 8; // array of primes for system dictionary size const int _average_depth_goal = 3; // goal for lookup length const int _primelist[_prime_array_size] = {107, 1009, 2017, 4049, 5051, 10103, 20201, 40423}; // Calculate a "good" dictionary size based // on predicted or current loaded classes count. static int calculate_dictionary_size(int classcount) { int newsize = _primelist[0]; if (classcount > 0 && !DumpSharedSpaces) { int index = 0; int desiredsize = classcount/_average_depth_goal; for (newsize = _primelist[index]; index < _prime_array_size -1; newsize = _primelist[++index]) { if (desiredsize <= newsize) { break; } } } return newsize; } Dictionary* ClassLoaderData::create_dictionary() { assert(!is_anonymous(), "anonymous class loader data do not have a dictionary"); int size; + bool resizable = false; if (_the_null_class_loader_data == NULL) { size = _boot_loader_dictionary_size; + resizable = true; } else if (class_loader()->is_a(SystemDictionary::reflect_DelegatingClassLoader_klass())) { size = 1; // there's only one class in relection class loader and no initiated classes } else if (is_system_class_loader_data()) { ! size = calculate_dictionary_size(PredictedLoadedClassCount); ! size = _boot_loader_dictionary_size; + resizable = true; } else { size = _default_loader_dictionary_size; + resizable = true; + } + if (!DynamicallyResizeSystemDictionaries || DumpSharedSpaces || UseSharedSpaces) { + resizable = false; } ! return new Dictionary(this, size, resizable); } // Unloading support oop ClassLoaderData::keep_alive_object() const { assert_locked_or_safepoint(_metaspace_lock);
*** 1323,1332 **** --- 1310,1332 ---- Metaspace::purge(); set_metaspace_oom(false); } } + int ClassLoaderDataGraph::resize_if_needed() { + assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint!"); + int resized = 0; + if (Dictionary::does_any_dictionary_needs_resizing()) { + FOR_ALL_DICTIONARY(cld) { + if (cld->dictionary()->resize_if_needed()) { + resized++; + } + } + } + return resized; + } + void ClassLoaderDataGraph::post_class_unload_events() { #if INCLUDE_TRACE assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint!"); if (Tracing::enabled()) { if (Tracing::is_event_enabled(TraceClassUnloadEvent)) {

src/hotspot/share/classfile/classLoaderData.cpp
Index Unified diffs Context diffs Sdiffs Wdiffs Patch New Old Previous File Next File