aoqi@0: /*
aoqi@0:  * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: #include "precompiled.hpp"
aoqi@0: #include "interpreter/interpreter.hpp"
aoqi@0: #include "oops/oop.inline.hpp"
aoqi@0: #include "oops/symbol.hpp"
aoqi@0: #include "runtime/frame.inline.hpp"
aoqi@0: #include "runtime/rframe.hpp"
aoqi@0: #include "runtime/vframe.hpp"
aoqi@0: #include "runtime/vframe_hp.hpp"
aoqi@0: 
aoqi@0: 
aoqi@0: static RFrame*const  noCaller    = (RFrame*) 0x1;               // no caller (i.e., initial frame)
aoqi@0: static RFrame*const  noCallerYet = (RFrame*) 0x0;               // caller not yet computed
aoqi@0: 
aoqi@0: RFrame::RFrame(frame fr, JavaThread* thread, RFrame*const callee) :
aoqi@0:   _fr(fr), _thread(thread), _callee(callee), _num(callee ? callee->num() + 1 : 0) {
aoqi@0:   _caller = (RFrame*)noCallerYet;
aoqi@0:   _invocations = 0;
aoqi@0:   _distance = 0;
aoqi@0: }
aoqi@0: 
aoqi@0: void RFrame::set_distance(int d) {
aoqi@0:   assert(is_compiled() || d >= 0, "should be positive");
aoqi@0:   _distance = d;
aoqi@0: }
aoqi@0: 
aoqi@0: InterpretedRFrame::InterpretedRFrame(frame fr, JavaThread* thread, RFrame*const callee)
aoqi@0: : RFrame(fr, thread, callee) {
aoqi@0:   RegisterMap map(thread, false);
aoqi@0:   _vf     = javaVFrame::cast(vframe::new_vframe(&_fr, &map, thread));
aoqi@0:   _method = methodHandle(thread, _vf->method());
aoqi@0:   assert(   _vf->is_interpreted_frame(), "must be interpreted");
aoqi@0:   init();
aoqi@0: }
aoqi@0: 
aoqi@0: InterpretedRFrame::InterpretedRFrame(frame fr, JavaThread* thread, methodHandle m)
aoqi@0: : RFrame(fr, thread, NULL) {
aoqi@0:   RegisterMap map(thread, false);
aoqi@0:   _vf     = javaVFrame::cast(vframe::new_vframe(&_fr, &map, thread));
aoqi@0:   _method = m;
aoqi@0: 
aoqi@0:   assert(   _vf->is_interpreted_frame(),  "must be interpreted");
aoqi@0:   init();
aoqi@0: }
aoqi@0: 
aoqi@0: CompiledRFrame::CompiledRFrame(frame fr, JavaThread* thread, RFrame*const  callee)
aoqi@0: : RFrame(fr, thread, callee) {
aoqi@0:   init();
aoqi@0: }
aoqi@0: 
aoqi@0: CompiledRFrame::CompiledRFrame(frame fr, JavaThread* thread)
aoqi@0: : RFrame(fr, thread, NULL) {
aoqi@0:   init();
aoqi@0: }
aoqi@0: 
aoqi@0: DeoptimizedRFrame::DeoptimizedRFrame(frame fr, JavaThread* thread, RFrame*const  callee)
aoqi@0: : InterpretedRFrame(fr, thread, callee) {}
aoqi@0: 
aoqi@0: RFrame* RFrame::new_RFrame(frame fr, JavaThread* thread, RFrame*const  callee) {
aoqi@0:   RFrame* rf;
aoqi@0:   int dist = callee ? callee->distance() : -1;
aoqi@0:   if (fr.is_interpreted_frame()) {
aoqi@0:     rf = new InterpretedRFrame(fr, thread, callee);
aoqi@0:     dist++;
aoqi@0:   } else if (fr.is_compiled_frame()) {
aoqi@0:     // Even deopted frames look compiled because the deopt
aoqi@0:     // is invisible until it happens.
aoqi@0:     rf = new CompiledRFrame(fr, thread, callee);
aoqi@0:   } else {
aoqi@0:     assert(false, "Unhandled frame type");
aoqi@0:   }
aoqi@0:   rf->set_distance(dist);
aoqi@0:   rf->init();
aoqi@0:   return rf;
aoqi@0: }
aoqi@0: 
aoqi@0: RFrame* RFrame::caller() {
aoqi@0:   if (_caller != noCallerYet) return (_caller == noCaller) ? NULL : _caller;    // already computed caller
aoqi@0: 
aoqi@0:   // caller not yet computed; do it now
aoqi@0:   if (_fr.is_first_java_frame()) {
aoqi@0:     _caller = (RFrame*)noCaller;
aoqi@0:     return NULL;
aoqi@0:   }
aoqi@0: 
aoqi@0:   RegisterMap map(_thread, false);
aoqi@0:   frame sender = _fr.real_sender(&map);
aoqi@0:   if (sender.is_java_frame()) {
aoqi@0:     _caller = new_RFrame(sender, thread(), this);
aoqi@0:     return _caller;
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Real caller is not java related
aoqi@0:   _caller = (RFrame*)noCaller;
aoqi@0:   return NULL;
aoqi@0: }
aoqi@0: 
aoqi@0: int InterpretedRFrame::cost() const {
aoqi@0:   return _method->code_size();    // fix this
aoqi@0:   //return _method->estimated_inline_cost(_receiverKlass);
aoqi@0: }
aoqi@0: 
aoqi@0: int CompiledRFrame::cost() const {
aoqi@0:   nmethod* nm = top_method()->code();
aoqi@0:   if (nm != NULL) {
aoqi@0:     return nm->insts_size();
aoqi@0:   } else {
aoqi@0:     return top_method()->code_size();
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: void CompiledRFrame::init() {
aoqi@0:   RegisterMap map(thread(), false);
aoqi@0:   vframe* vf = vframe::new_vframe(&_fr, &map, thread());
aoqi@0:   assert(vf->is_compiled_frame(), "must be compiled");
aoqi@0:   _nm = compiledVFrame::cast(vf)->code();
aoqi@0:   vf = vf->top();
aoqi@0:   _vf = javaVFrame::cast(vf);
aoqi@0:   _method = methodHandle(thread(), CodeCache::find_nmethod(_fr.pc())->method());
aoqi@0:   assert(_method(), "should have found a method");
aoqi@0: #ifndef PRODUCT
aoqi@0:   _invocations = _method->compiled_invocation_count();
aoqi@0: #endif
aoqi@0: }
aoqi@0: 
aoqi@0: void InterpretedRFrame::init() {
aoqi@0:   _invocations = _method->invocation_count() + _method->backedge_count();
aoqi@0: }
aoqi@0: 
aoqi@0: void RFrame::print(const char* kind) {
aoqi@0: #ifndef PRODUCT
aoqi@0: #ifdef COMPILER2
aoqi@0:   int cnt = top_method()->interpreter_invocation_count();
aoqi@0: #else
aoqi@0:   int cnt = top_method()->invocation_count();
aoqi@0: #endif
aoqi@0:   tty->print("%3d %s ", _num, is_interpreted() ? "I" : "C");
aoqi@0:   top_method()->print_short_name(tty);
aoqi@0:   tty->print_cr(": inv=%5d(%d) cst=%4d", _invocations, cnt, cost());
aoqi@0: #endif
aoqi@0: }
aoqi@0: 
aoqi@0: void CompiledRFrame::print() {
aoqi@0:   RFrame::print("comp");
aoqi@0: }
aoqi@0: 
aoqi@0: void InterpretedRFrame::print() {
aoqi@0:   RFrame::print("int.");
aoqi@0: }
aoqi@0: 
aoqi@0: void DeoptimizedRFrame::print() {
aoqi@0:   RFrame::print("deopt.");
aoqi@0: }