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hotspot/src/share/vm/runtime/rframe.cpp

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+/*
+ * 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/_rframe.cpp.incl"
+
+static RFrame*const  noCaller    = (RFrame*) 0x1;               // no caller (i.e., initial frame)
+static RFrame*const  noCallerYet = (RFrame*) 0x0;               // caller not yet computed
+
+RFrame::RFrame(frame fr, JavaThread* thread, RFrame*const callee) :
+  _fr(fr), _thread(thread), _callee(callee), _num(callee ? callee->num() + 1 : 0) {
+  _caller = (RFrame*)noCallerYet;
+  _invocations = 0;
+  _distance = 0;
+}
+
+void RFrame::set_distance(int d) {
+  assert(is_compiled() || d >= 0, "should be positive");
+  _distance = d;
+}
+
+InterpretedRFrame::InterpretedRFrame(frame fr, JavaThread* thread, RFrame*const callee)
+: RFrame(fr, thread, callee) {
+  RegisterMap map(thread, false);
+  _vf     = javaVFrame::cast(vframe::new_vframe(&_fr, &map, thread));
+  _method = methodHandle(thread, _vf->method());
+  assert(   _vf->is_interpreted_frame(), "must be interpreted");
+  init();
+}
+
+InterpretedRFrame::InterpretedRFrame(frame fr, JavaThread* thread, methodHandle m)
+: RFrame(fr, thread, NULL) {
+  RegisterMap map(thread, false);
+  _vf     = javaVFrame::cast(vframe::new_vframe(&_fr, &map, thread));
+  _method = m;
+
+  assert(   _vf->is_interpreted_frame(),  "must be interpreted");
+  init();
+}
+
+CompiledRFrame::CompiledRFrame(frame fr, JavaThread* thread, RFrame*const  callee)
+: RFrame(fr, thread, callee) {
+  init();
+}
+
+CompiledRFrame::CompiledRFrame(frame fr, JavaThread* thread)
+: RFrame(fr, thread, NULL) {
+  init();
+}
+
+DeoptimizedRFrame::DeoptimizedRFrame(frame fr, JavaThread* thread, RFrame*const  callee)
+: InterpretedRFrame(fr, thread, callee) {}
+
+RFrame* RFrame::new_RFrame(frame fr, JavaThread* thread, RFrame*const  callee) {
+  RFrame* rf;
+  int dist = callee ? callee->distance() : -1;
+  if (fr.is_interpreted_frame()) {
+    rf = new InterpretedRFrame(fr, thread, callee);
+    dist++;
+  } else if (fr.is_compiled_frame()) {
+    // Even deopted frames look compiled because the deopt
+    // is invisible until it happens.
+    rf = new CompiledRFrame(fr, thread, callee);
+  } else {
+    assert(false, "Unhandled frame type");
+  }
+  rf->set_distance(dist);
+  rf->init();
+  return rf;
+}
+
+RFrame* RFrame::caller() {
+  if (_caller != noCallerYet) return (_caller == noCaller) ? NULL : _caller;    // already computed caller
+
+  // caller not yet computed; do it now
+  if (_fr.is_first_java_frame()) {
+    _caller = (RFrame*)noCaller;
+    return NULL;
+  }
+
+  RegisterMap map(_thread, false);
+  frame sender = _fr.real_sender(&map);
+  if (sender.is_java_frame()) {
+    _caller = new_RFrame(sender, thread(), this);
+    return _caller;
+  }
+
+  // Real caller is not java related
+  _caller = (RFrame*)noCaller;
+  return NULL;
+}
+
+int InterpretedRFrame::cost() const {
+  return _method->code_size();    // fix this
+  //return _method->estimated_inline_cost(_receiverKlass);
+}
+
+int CompiledRFrame::cost() const {
+  nmethod* nm = top_method()->code();
+  if (nm != NULL) {
+    return nm->code_size();
+  } else {
+    return top_method()->code_size();
+  }
+}
+
+void CompiledRFrame::init() {
+  RegisterMap map(thread(), false);
+  vframe* vf = vframe::new_vframe(&_fr, &map, thread());
+  assert(vf->is_compiled_frame(), "must be compiled");
+  _nm = compiledVFrame::cast(vf)->code();
+  vf = vf->top();
+  _vf = javaVFrame::cast(vf);
+  _method = methodHandle(thread(), CodeCache::find_nmethod(_fr.pc())->method());
+  assert(_method(), "should have found a method");
+#ifndef PRODUCT
+  _invocations = _method->compiled_invocation_count();
+#endif
+}
+
+void InterpretedRFrame::init() {
+  _invocations = _method->invocation_count() + _method->backedge_count();
+}
+
+void RFrame::print(const char* kind) {
+#ifndef PRODUCT
+#ifdef COMPILER2
+  int cnt = top_method()->interpreter_invocation_count();
+#else
+  int cnt = top_method()->invocation_count();
+#endif
+  tty->print("%3d %s ", _num, is_interpreted() ? "I" : "C");
+  top_method()->print_short_name(tty);
+  tty->print_cr(": inv=%5d(%d) cst=%4d", _invocations, cnt, cost());
+#endif
+}
+
+void CompiledRFrame::print() {
+  RFrame::print("comp");
+}
+
+void InterpretedRFrame::print() {
+  RFrame::print("int.");
+}
+
+void DeoptimizedRFrame::print() {
+  RFrame::print("deopt.");
+}