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hotspot/src/share/vm/oops/methodDataKlass.cpp

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+/*
+ * Copyright 2000-2006 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+# include "incls/_precompiled.incl"
+# include "incls/_methodDataKlass.cpp.incl"
+
+klassOop methodDataKlass::create_klass(TRAPS) {
+  methodDataKlass o;
+  KlassHandle h_this_klass(THREAD, Universe::klassKlassObj());
+  KlassHandle k = base_create_klass(h_this_klass, header_size(),
+                                    o.vtbl_value(), CHECK_NULL);
+  // Make sure size calculation is right
+  assert(k()->size() == align_object_size(header_size()),
+         "wrong size for object");
+  return k();
+}
+
+
+int methodDataKlass::oop_size(oop obj) const {
+  assert(obj->is_methodData(), "must be method data oop");
+  return methodDataOop(obj)->object_size();
+}
+
+
+bool methodDataKlass::oop_is_parsable(oop obj) const {
+  assert(obj->is_methodData(), "must be method data oop");
+  return methodDataOop(obj)->object_is_parsable();
+}
+
+
+methodDataOop methodDataKlass::allocate(methodHandle method, TRAPS) {
+  int size = methodDataOopDesc::compute_allocation_size_in_words(method);
+  KlassHandle h_k(THREAD, as_klassOop());
+  methodDataOop mdo =
+    (methodDataOop)CollectedHeap::permanent_obj_allocate(h_k, size, CHECK_NULL);
+  assert(!mdo->is_parsable(), "not expecting parsability yet.");
+  No_Safepoint_Verifier no_safepoint;  // init function atomic wrt GC
+  mdo->initialize(method);
+
+  assert(mdo->is_parsable(), "should be parsable here.");
+  assert(size == mdo->object_size(), "wrong size for methodDataOop");
+  return mdo;
+}
+
+
+void methodDataKlass::oop_follow_contents(oop obj) {
+  assert (obj->is_methodData(), "object must be method data");
+  methodDataOop m = methodDataOop(obj);
+
+  obj->follow_header();
+  MarkSweep::mark_and_push(m->adr_method());
+  ResourceMark rm;
+  for (ProfileData* data = m->first_data();
+       m->is_valid(data);
+       data = m->next_data(data)) {
+    data->follow_contents();
+  }
+}
+
+#ifndef SERIALGC
+void methodDataKlass::oop_follow_contents(ParCompactionManager* cm,
+                                          oop obj) {
+  assert (obj->is_methodData(), "object must be method data");
+  methodDataOop m = methodDataOop(obj);
+
+  obj->follow_header(cm);
+  PSParallelCompact::mark_and_push(cm, m->adr_method());
+  ResourceMark rm;
+  for (ProfileData* data = m->first_data();
+       m->is_valid(data);
+       data = m->next_data(data)) {
+    data->follow_contents(cm);
+  }
+}
+#endif // SERIALGC
+
+int methodDataKlass::oop_oop_iterate(oop obj, OopClosure* blk) {
+  assert (obj->is_methodData(), "object must be method data");
+  methodDataOop m = methodDataOop(obj);
+  // Get size before changing pointers
+  // Don't call size() or oop_size() since that is a virtual call.
+  int size = m->object_size();
+
+  obj->oop_iterate_header(blk);
+  blk->do_oop(m->adr_method());
+  ResourceMark rm;
+  for (ProfileData* data = m->first_data();
+       m->is_valid(data);
+       data = m->next_data(data)) {
+    data->oop_iterate(blk);
+  }
+  return size;
+}
+
+
+int methodDataKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) {
+  assert (obj->is_methodData(), "object must be method data");
+  methodDataOop m = methodDataOop(obj);
+  // Get size before changing pointers
+  // Don't call size() or oop_size() since that is a virtual call.
+  int size = m->object_size();
+
+  obj->oop_iterate_header(blk, mr);
+  oop* adr = m->adr_method();
+  if (mr.contains(adr)) {
+    blk->do_oop(m->adr_method());
+  }
+  ResourceMark rm;
+  for (ProfileData* data = m->first_data();
+       m->is_valid(data);
+       data = m->next_data(data)) {
+    data->oop_iterate_m(blk, mr);
+  }
+  return size;
+}
+
+int methodDataKlass::oop_adjust_pointers(oop obj) {
+  assert(obj->is_methodData(), "should be method data");
+  methodDataOop m = methodDataOop(obj);
+  // Get size before changing pointers
+  // Don't call size() or oop_size() since that is a virtual call.
+  int size = m->object_size();
+
+  obj->adjust_header();
+  MarkSweep::adjust_pointer(m->adr_method());
+  ResourceMark rm;
+  ProfileData* data;
+  for (data = m->first_data(); m->is_valid(data); data = m->next_data(data)) {
+    data->adjust_pointers();
+  }
+  return size;
+}
+
+
+#ifndef SERIALGC
+void methodDataKlass::oop_copy_contents(PSPromotionManager* pm, oop obj) {
+  assert (obj->is_methodData(), "object must be method data");
+  methodDataOop m = methodDataOop(obj);
+  // This should never point into the young gen.
+  assert(!PSScavenge::should_scavenge(oop(*m->adr_method())), "Sanity");
+}
+
+void methodDataKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
+  assert (obj->is_methodData(), "object must be method data");
+  methodDataOop m = methodDataOop(obj);
+  // This should never point into the young gen.
+  assert(!PSScavenge::should_scavenge(oop(*m->adr_method())), "Sanity");
+}
+
+int methodDataKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
+  assert(obj->is_methodData(), "should be method data");
+  methodDataOop m = methodDataOop(obj);
+
+  PSParallelCompact::adjust_pointer(m->adr_method());
+
+  ResourceMark rm;
+  ProfileData* data;
+  for (data = m->first_data(); m->is_valid(data); data = m->next_data(data)) {
+    data->update_pointers();
+  }
+  return m->object_size();
+}
+
+int
+methodDataKlass::oop_update_pointers(ParCompactionManager* cm, oop obj,
+                                     HeapWord* beg_addr, HeapWord* end_addr) {
+  assert(obj->is_methodData(), "should be method data");
+
+  oop* p;
+  methodDataOop m = methodDataOop(obj);
+
+  p = m->adr_method();
+  PSParallelCompact::adjust_pointer(p, beg_addr, end_addr);
+
+  ResourceMark rm;
+  ProfileData* data;
+  for (data = m->first_data(); m->is_valid(data); data = m->next_data(data)) {
+    data->update_pointers(beg_addr, end_addr);
+  }
+  return m->object_size();
+}
+#endif // SERIALGC
+
+#ifndef PRODUCT
+
+// Printing
+void methodDataKlass::oop_print_on(oop obj, outputStream* st) {
+  assert(obj->is_methodData(), "should be method data");
+  methodDataOop m = methodDataOop(obj);
+  st->print("method data for ");
+  m->method()->print_value_on(st);
+  st->cr();
+  m->print_data_on(st);
+}
+
+void methodDataKlass::oop_print_value_on(oop obj, outputStream* st) {
+  assert(obj->is_methodData(), "should be method data");
+  methodDataOop m = methodDataOop(obj);
+  st->print("method data for ");
+  m->method()->print_value_on(st);
+}
+
+#endif // !PRODUCT
+
+const char* methodDataKlass::internal_name() const {
+  return "{method data}";
+}
+
+
+// Verification
+void methodDataKlass::oop_verify_on(oop obj, outputStream* st) {
+  Klass::oop_verify_on(obj, st);
+  guarantee(obj->is_methodData(), "object must be method data");
+  methodDataOop m = methodDataOop(obj);
+  guarantee(m->is_perm(), "should be in permspace");
+  m->verify_data_on(st);
+}