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/*
* Copyright (c) 1997, 2007, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.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.");
}
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