--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/oops/methodKlass.cpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,361 @@
+/*
+ * Copyright 1997-2007 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/_methodKlass.cpp.incl"
+
+klassOop methodKlass::create_klass(TRAPS) {
+  methodKlass 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");
+  java_lang_Class::create_mirror(k, CHECK_NULL); // Allocate mirror
+  return k();
+}
+
+
+int methodKlass::oop_size(oop obj) const {
+  assert(obj->is_method(), "must be method oop");
+  return methodOop(obj)->object_size();
+}
+
+
+bool methodKlass::oop_is_parsable(oop obj) const {
+  assert(obj->is_method(), "must be method oop");
+  return methodOop(obj)->object_is_parsable();
+}
+
+
+methodOop methodKlass::allocate(constMethodHandle xconst,
+                                AccessFlags access_flags, TRAPS) {
+  int size = methodOopDesc::object_size(access_flags.is_native());
+  KlassHandle h_k(THREAD, as_klassOop());
+  assert(xconst()->is_parsable(), "possible publication protocol violation");
+  methodOop m = (methodOop)CollectedHeap::permanent_obj_allocate(h_k, size, CHECK_NULL);
+  assert(!m->is_parsable(), "not expecting parsability yet.");
+
+  No_Safepoint_Verifier no_safepoint;  // until m becomes parsable below
+  m->set_constMethod(xconst());
+  m->set_access_flags(access_flags);
+  m->set_method_size(size);
+  m->set_name_index(0);
+  m->set_signature_index(0);
+#ifdef CC_INTERP
+  m->set_result_index(T_VOID);
+#endif
+  m->set_constants(NULL);
+  m->set_max_stack(0);
+  m->set_max_locals(0);
+  m->clear_intrinsic_id_cache();
+  m->set_method_data(NULL);
+  m->set_interpreter_throwout_count(0);
+  m->set_vtable_index(methodOopDesc::garbage_vtable_index);
+
+  // Fix and bury in methodOop
+  m->set_interpreter_entry(NULL); // sets i2i entry and from_int
+  m->set_highest_tier_compile(CompLevel_none);
+  m->set_adapter_entry(NULL);
+  m->clear_code(); // from_c/from_i get set to c2i/i2i
+
+  if (access_flags.is_native()) {
+    m->clear_native_function();
+    m->set_signature_handler(NULL);
+  }
+
+  NOT_PRODUCT(m->set_compiled_invocation_count(0);)
+  m->set_interpreter_invocation_count(0);
+  m->invocation_counter()->init();
+  m->backedge_counter()->init();
+  m->clear_number_of_breakpoints();
+  assert(m->is_parsable(), "must be parsable here.");
+  assert(m->size() == size, "wrong size for object");
+  // We should not publish an uprasable object's reference
+  // into one that is parsable, since that presents problems
+  // for the concurrent parallel marking and precleaning phases
+  // of concurrent gc (CMS).
+  xconst->set_method(m);
+  return m;
+}
+
+
+void methodKlass::oop_follow_contents(oop obj) {
+  assert (obj->is_method(), "object must be method");
+  methodOop m = methodOop(obj);
+  // Performance tweak: We skip iterating over the klass pointer since we
+  // know that Universe::methodKlassObj never moves.
+  MarkSweep::mark_and_push(m->adr_constMethod());
+  MarkSweep::mark_and_push(m->adr_constants());
+  if (m->method_data() != NULL) {
+    MarkSweep::mark_and_push(m->adr_method_data());
+  }
+}
+
+#ifndef SERIALGC
+void methodKlass::oop_follow_contents(ParCompactionManager* cm,
+                                      oop obj) {
+  assert (obj->is_method(), "object must be method");
+  methodOop m = methodOop(obj);
+  // Performance tweak: We skip iterating over the klass pointer since we
+  // know that Universe::methodKlassObj never moves.
+  PSParallelCompact::mark_and_push(cm, m->adr_constMethod());
+  PSParallelCompact::mark_and_push(cm, m->adr_constants());
+#ifdef COMPILER2
+  if (m->method_data() != NULL) {
+    PSParallelCompact::mark_and_push(cm, m->adr_method_data());
+  }
+#endif // COMPILER2
+}
+#endif // SERIALGC
+
+int methodKlass::oop_oop_iterate(oop obj, OopClosure* blk) {
+  assert (obj->is_method(), "object must be method");
+  methodOop m = methodOop(obj);
+  // Get size before changing pointers.
+  // Don't call size() or oop_size() since that is a virtual call.
+  int size = m->object_size();
+  // Performance tweak: We skip iterating over the klass pointer since we
+  // know that Universe::methodKlassObj never moves
+  blk->do_oop(m->adr_constMethod());
+  blk->do_oop(m->adr_constants());
+  if (m->method_data() != NULL) {
+    blk->do_oop(m->adr_method_data());
+  }
+  return size;
+}
+
+
+int methodKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) {
+  assert (obj->is_method(), "object must be method");
+  methodOop m = methodOop(obj);
+  // Get size before changing pointers.
+  // Don't call size() or oop_size() since that is a virtual call.
+  int size = m->object_size();
+  // Performance tweak: We skip iterating over the klass pointer since we
+  // know that Universe::methodKlassObj never moves.
+  oop* adr;
+  adr = m->adr_constMethod();
+  if (mr.contains(adr)) blk->do_oop(adr);
+  adr = m->adr_constants();
+  if (mr.contains(adr)) blk->do_oop(adr);
+  if (m->method_data() != NULL) {
+    adr = m->adr_method_data();
+    if (mr.contains(adr)) blk->do_oop(adr);
+  }
+  return size;
+}
+
+
+int methodKlass::oop_adjust_pointers(oop obj) {
+  assert(obj->is_method(), "should be method");
+  methodOop m = methodOop(obj);
+  // Get size before changing pointers.
+  // Don't call size() or oop_size() since that is a virtual call.
+  int size = m->object_size();
+  // Performance tweak: We skip iterating over the klass pointer since we
+  // know that Universe::methodKlassObj never moves.
+  MarkSweep::adjust_pointer(m->adr_constMethod());
+  MarkSweep::adjust_pointer(m->adr_constants());
+  if (m->method_data() != NULL) {
+    MarkSweep::adjust_pointer(m->adr_method_data());
+  }
+  return size;
+}
+
+#ifndef SERIALGC
+void methodKlass::oop_copy_contents(PSPromotionManager* pm, oop obj) {
+  assert(obj->is_method(), "should be method");
+}
+
+void methodKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
+  assert(obj->is_method(), "should be method");
+}
+
+int methodKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
+  assert(obj->is_method(), "should be method");
+  methodOop m = methodOop(obj);
+  PSParallelCompact::adjust_pointer(m->adr_constMethod());
+  PSParallelCompact::adjust_pointer(m->adr_constants());
+#ifdef COMPILER2
+  if (m->method_data() != NULL) {
+    PSParallelCompact::adjust_pointer(m->adr_method_data());
+  }
+#endif // COMPILER2
+  return m->object_size();
+}
+
+int methodKlass::oop_update_pointers(ParCompactionManager* cm, oop obj,
+                                     HeapWord* beg_addr, HeapWord* end_addr) {
+  assert(obj->is_method(), "should be method");
+
+  oop* p;
+  methodOop m = methodOop(obj);
+
+  p = m->adr_constMethod();
+  PSParallelCompact::adjust_pointer(p, beg_addr, end_addr);
+  p = m->adr_constants();
+  PSParallelCompact::adjust_pointer(p, beg_addr, end_addr);
+
+#ifdef COMPILER2
+  if (m->method_data() != NULL) {
+    p = m->adr_method_data();
+    PSParallelCompact::adjust_pointer(p, beg_addr, end_addr);
+  }
+#endif // COMPILER2
+  return m->object_size();
+}
+#endif // SERIALGC
+
+#ifndef PRODUCT
+
+// Printing
+
+void methodKlass::oop_print_on(oop obj, outputStream* st) {
+  ResourceMark rm;
+  assert(obj->is_method(), "must be method");
+  Klass::oop_print_on(obj, st);
+  methodOop m = methodOop(obj);
+  st->print   (" - method holder:     ");    m->method_holder()->print_value_on(st); st->cr();
+  st->print   (" - constants:         " INTPTR_FORMAT, " ", (address)m->constants());
+  m->constants()->print_value_on(st); st->cr();
+  st->print   (" - access:            0x%x  ", m->access_flags().as_int()); m->access_flags().print_on(st); st->cr();
+  st->print   (" - name:              ");    m->name()->print_value_on(st); st->cr();
+  st->print   (" - signature:         ");    m->signature()->print_value_on(st); st->cr();
+  st->print_cr(" - max stack:         %d",   m->max_stack());
+  st->print_cr(" - max locals:        %d",   m->max_locals());
+  st->print_cr(" - size of params:    %d",   m->size_of_parameters());
+  st->print_cr(" - method size:       %d",   m->method_size());
+  st->print_cr(" - vtable index:      %d",   m->_vtable_index);
+  st->print_cr(" - code size:         %d",   m->code_size());
+  st->print_cr(" - code start:        " INTPTR_FORMAT, m->code_base());
+  st->print_cr(" - code end (excl):   " INTPTR_FORMAT, m->code_base() + m->code_size());
+  if (m->method_data() != NULL) {
+    st->print_cr(" - method data:       " INTPTR_FORMAT, (address)m->method_data());
+  }
+  st->print_cr(" - checked ex length: %d",   m->checked_exceptions_length());
+  if (m->checked_exceptions_length() > 0) {
+    CheckedExceptionElement* table = m->checked_exceptions_start();
+    st->print_cr(" - checked ex start:  " INTPTR_FORMAT, table);
+    if (Verbose) {
+      for (int i = 0; i < m->checked_exceptions_length(); i++) {
+        st->print_cr("   - throws %s", m->constants()->printable_name_at(table[i].class_cp_index));
+      }
+    }
+  }
+  if (m->has_linenumber_table()) {
+    u_char* table = m->compressed_linenumber_table();
+    st->print_cr(" - linenumber start:  " INTPTR_FORMAT, table);
+    if (Verbose) {
+      CompressedLineNumberReadStream stream(table);
+      while (stream.read_pair()) {
+        st->print_cr("   - line %d: %d", stream.line(), stream.bci());
+      }
+    }
+  }
+  st->print_cr(" - localvar length:   %d",   m->localvariable_table_length());
+  if (m->localvariable_table_length() > 0) {
+    LocalVariableTableElement* table = m->localvariable_table_start();
+    st->print_cr(" - localvar start:    " INTPTR_FORMAT, table);
+    if (Verbose) {
+      for (int i = 0; i < m->localvariable_table_length(); i++) {
+        int bci = table[i].start_bci;
+        int len = table[i].length;
+        const char* name = m->constants()->printable_name_at(table[i].name_cp_index);
+        const char* desc = m->constants()->printable_name_at(table[i].descriptor_cp_index);
+        int slot = table[i].slot;
+        st->print_cr("   - %s %s bci=%d len=%d slot=%d", desc, name, bci, len, slot);
+      }
+    }
+  }
+  if (m->code() != NULL) {
+    st->print   (" - compiled code: ");
+    m->code()->print_value_on(st);
+    st->cr();
+  }
+}
+
+
+void methodKlass::oop_print_value_on(oop obj, outputStream* st) {
+  assert(obj->is_method(), "must be method");
+  Klass::oop_print_value_on(obj, st);
+  methodOop m = methodOop(obj);
+  st->print(" ");
+  m->name()->print_value_on(st);
+  st->print(" ");
+  m->signature()->print_value_on(st);
+  st->print(" in ");
+  m->method_holder()->print_value_on(st);
+  if (WizardMode) st->print("[%d,%d]", m->size_of_parameters(), m->max_locals());
+  if (WizardMode && m->code() != NULL) st->print(" ((nmethod*)%p)", m->code());
+}
+
+#endif // PRODUCT
+
+const char* methodKlass::internal_name() const {
+  return "{method}";
+}
+
+
+// Verification
+
+void methodKlass::oop_verify_on(oop obj, outputStream* st) {
+  Klass::oop_verify_on(obj, st);
+  guarantee(obj->is_method(), "object must be method");
+  if (!obj->partially_loaded()) {
+    methodOop m = methodOop(obj);
+    guarantee(m->is_perm(),  "should be in permspace");
+    guarantee(m->name()->is_perm(), "should be in permspace");
+    guarantee(m->name()->is_symbol(), "should be symbol");
+    guarantee(m->signature()->is_perm(), "should be in permspace");
+    guarantee(m->signature()->is_symbol(), "should be symbol");
+    guarantee(m->constants()->is_perm(), "should be in permspace");
+    guarantee(m->constants()->is_constantPool(), "should be constant pool");
+    guarantee(m->constMethod()->is_constMethod(), "should be constMethodOop");
+    guarantee(m->constMethod()->is_perm(), "should be in permspace");
+    methodDataOop method_data = m->method_data();
+    guarantee(method_data == NULL ||
+              method_data->is_perm(), "should be in permspace");
+    guarantee(method_data == NULL ||
+              method_data->is_methodData(), "should be method data");
+  }
+}
+
+bool methodKlass::oop_partially_loaded(oop obj) const {
+  assert(obj->is_method(), "object must be method");
+  methodOop m = methodOop(obj);
+  constMethodOop xconst = m->constMethod();
+  assert(xconst != NULL, "const method must be set");
+  constMethodKlass* ck = constMethodKlass::cast(xconst->klass());
+  return ck->oop_partially_loaded(xconst);
+}
+
+
+void methodKlass::oop_set_partially_loaded(oop obj) {
+  assert(obj->is_method(), "object must be method");
+  methodOop m = methodOop(obj);
+  constMethodOop xconst = m->constMethod();
+  assert(xconst != NULL, "const method must be set");
+  constMethodKlass* ck = constMethodKlass::cast(xconst->klass());
+  ck->oop_set_partially_loaded(xconst);
+}