| /* |
| * Copyright (c) 2009, 2015, 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. |
| * |
| */ |
| |
| package com.sun.hotspot.tools.compiler; |
| |
| import java.io.PrintStream; |
| import java.util.ArrayDeque; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Representation of a compilation scope in a compilation log. This class is a |
| * hybrid: its instances can represent original scopes of methods being |
| * compiled, but are also used to represent call sites in given methods. |
| */ |
| public class CallSite { |
| |
| /** |
| * The index of the call in the caller. This will be 0 if this instance |
| * represents a compilation root. |
| */ |
| private int bci; |
| |
| /** |
| * The method that is called at this call site. This will be {@code null} |
| * if this instance represents a compilation root. |
| */ |
| private Method method; |
| |
| /** |
| * The invocation count for this call site. |
| */ |
| private int count; |
| |
| /** |
| * The receiver type of the call represented by this instance, if known. |
| */ |
| private String receiver; |
| |
| /** |
| * In case the {@linkplain receiver receiver type} of the call represented |
| * by this instance is known, this is how often the type was encountered. |
| */ |
| private int receiver_count; |
| |
| /** |
| * The reason for a success or failure of an inlining operation at this |
| * call site. |
| */ |
| private String reason; |
| |
| /** |
| * A list of all calls in this compilation scope. |
| */ |
| private List<CallSite> calls; |
| |
| /** |
| * Number of nodes in the graph at the end of parsing this compilation |
| * scope. |
| */ |
| private int endNodes; |
| |
| /** |
| * Number of live nodes in the graph at the end of parsing this compilation |
| * scope. |
| */ |
| private int endLiveNodes; |
| |
| /** |
| * Time in seconds since VM startup at which parsing this compilation scope |
| * ended. |
| */ |
| private double timeStamp; |
| |
| /** |
| * The inline ID in case the call represented by this instance is inlined, |
| * 0 otherwise. |
| */ |
| private long inlineId; |
| |
| /** |
| * List of uncommon traps in this compilation scope. |
| */ |
| private List<UncommonTrap> traps; |
| |
| /** |
| * The name of the intrinsic at this call site. |
| */ |
| private String intrinsicName; |
| |
| /** |
| * Default constructor: used to create an instance that represents the top |
| * scope of a compilation. |
| */ |
| CallSite() {} |
| |
| /** |
| * Constructor to create an instance that represents an actual method call. |
| */ |
| CallSite(int bci, Method m) { |
| this.bci = bci; |
| this.method = m; |
| } |
| |
| /** |
| * Add a call site to the compilation scope represented by this instance. |
| */ |
| void add(CallSite site) { |
| if (getCalls() == null) { |
| calls = new ArrayList<>(); |
| } |
| getCalls().add(site); |
| } |
| |
| /** |
| * Return the last of the {@linkplain #getCalls() call sites} in this |
| * compilation scope. |
| */ |
| CallSite last() { |
| return getCalls().get(getCalls().size() - 1); |
| } |
| |
| /** |
| * Return the last-but-one of the {@linkplain #getCalls() call sites} in |
| * this compilation scope. |
| */ |
| CallSite lastButOne() { |
| return getCalls().get(getCalls().size() - 2); |
| } |
| |
| public String toString() { |
| StringBuilder sb = new StringBuilder(); |
| if (getReason() == null) { |
| sb.append(" @ " + getBci() + " " + getMethod()); |
| } else { |
| sb.append("- @ " + getBci() + " " + getMethod() + " " + getReason()); |
| } |
| sb.append("\n"); |
| if (getCalls() != null) { |
| for (CallSite site : getCalls()) { |
| sb.append(site); |
| sb.append("\n"); |
| } |
| } |
| return sb.toString(); |
| } |
| |
| public void print(PrintStream stream) { |
| print(stream, 0, true, false); |
| } |
| |
| void emit(PrintStream stream, int indent) { |
| for (int i = 0; i < indent; i++) { |
| stream.print(' '); |
| } |
| } |
| |
| public void print(PrintStream stream, int indent, boolean printInlining, boolean printUncommonTraps) { |
| emit(stream, indent); |
| String m = getMethod().getHolder() + "::" + getMethod().getName(); |
| if (getReason() == null) { |
| stream.print(" @ " + getBci() + " " + m + " (" + getMethod().getBytes() + " bytes)"); |
| } else { |
| stream.print(" @ " + getBci() + " " + m + " " + getReason()); |
| } |
| stream.print(getIntrinsicOrEmptyString()); |
| stream.printf(" (end time: %6.4f", getTimeStamp()); |
| if (getEndNodes() > 0) { |
| stream.printf(" nodes: %d live: %d", getEndNodes(), getEndLiveNodes()); |
| } |
| stream.println(")"); |
| |
| if (getReceiver() != null) { |
| emit(stream, indent + 4); |
| stream.println("type profile " + getMethod().getHolder() + " -> " + getReceiver() + " (" + |
| (getReceiverCount() * 100 / getCount()) + "%)"); |
| } |
| if (printInlining && getCalls() != null) { |
| for (CallSite site : getCalls()) { |
| site.print(stream, indent + 2, printInlining, printUncommonTraps); |
| } |
| } |
| if (printUncommonTraps && getTraps() != null) { |
| for (UncommonTrap site : getTraps()) { |
| site.print(stream, indent + 2); |
| } |
| } |
| } |
| |
| public int getBci() { |
| return bci; |
| } |
| |
| public void setBci(int bci) { |
| this.bci = bci; |
| } |
| |
| public Method getMethod() { |
| return method; |
| } |
| |
| public void setMethod(Method method) { |
| this.method = method; |
| } |
| |
| public int getCount() { |
| return count; |
| } |
| |
| public void setCount(int count) { |
| this.count = count; |
| } |
| |
| public String getReceiver() { |
| return receiver; |
| } |
| |
| public void setReceiver(String receiver) { |
| this.receiver = receiver; |
| } |
| |
| public int getReceiverCount() { |
| return receiver_count; |
| } |
| |
| public void setReceiver_count(int receiver_count) { |
| this.receiver_count = receiver_count; |
| } |
| |
| public String getReason() { |
| return reason; |
| } |
| |
| public void setReason(String reason) { |
| this.reason = reason; |
| } |
| |
| public List<CallSite> getCalls() { |
| return calls; |
| } |
| |
| public List<UncommonTrap> getTraps() { |
| return traps; |
| } |
| |
| void add(UncommonTrap e) { |
| if (traps == null) { |
| traps = new ArrayList<UncommonTrap>(); |
| } |
| traps.add(e); |
| } |
| |
| void setEndNodes(int n) { |
| endNodes = n; |
| } |
| |
| public int getEndNodes() { |
| return endNodes; |
| } |
| |
| void setEndLiveNodes(int n) { |
| endLiveNodes = n; |
| } |
| |
| public int getEndLiveNodes() { |
| return endLiveNodes; |
| } |
| |
| void setTimeStamp(double time) { |
| timeStamp = time; |
| } |
| |
| public double getTimeStamp() { |
| return timeStamp; |
| } |
| |
| /** |
| * Check whether this call site matches another. Every late inline call |
| * site has a unique inline ID. If the call site we're looking for has one, |
| * then use it; otherwise rely on method name and byte code index. |
| */ |
| private boolean matches(CallSite other) { |
| if (other.inlineId != 0) { |
| return inlineId == other.inlineId; |
| } |
| return method.equals(other.method) && bci == other.bci; |
| } |
| |
| /** |
| * Locate a late inline call site: find, in this instance's |
| * {@linkplain #calls call sites}, the one furthest down the given call |
| * stack. |
| * |
| * Multiple chains of identical call sites with the same method name / bci |
| * combination are possible, so we have to try them all until we find the |
| * late inline call site that has a matching inline ID. |
| * |
| * @return a matching call site, or {@code null} if none was found. |
| */ |
| public CallSite findCallSite(ArrayDeque<CallSite> sites) { |
| if (calls == null) { |
| return null; |
| } |
| CallSite site = sites.pop(); |
| for (CallSite c : calls) { |
| if (c.matches(site)) { |
| if (!sites.isEmpty()) { |
| CallSite res = c.findCallSite(sites); |
| if (res != null) { |
| sites.push(site); |
| return res; |
| } |
| } else { |
| sites.push(site); |
| return c; |
| } |
| } |
| } |
| sites.push(site); |
| return null; |
| } |
| |
| /** |
| * Locate a late inline call site in the tree spanned by all this instance's |
| * {@linkplain #calls call sites}, and return the sequence of call sites |
| * (scopes) leading to that late inline call site. |
| */ |
| public ArrayDeque<CallSite> findCallSite2(CallSite site) { |
| if (calls == null) { |
| return null; |
| } |
| |
| for (CallSite c : calls) { |
| if (c.matches(site)) { |
| ArrayDeque<CallSite> stack = new ArrayDeque<>(); |
| stack.push(c); |
| return stack; |
| } else { |
| ArrayDeque<CallSite> stack = c.findCallSite2(site); |
| if (stack != null) { |
| stack.push(c); |
| return stack; |
| } |
| } |
| } |
| return null; |
| } |
| |
| public long getInlineId() { |
| return inlineId; |
| } |
| |
| public void setInlineId(long inlineId) { |
| this.inlineId = inlineId; |
| } |
| |
| public String getIntrinsicName() { |
| return intrinsicName; |
| } |
| |
| public void setIntrinsicName(String name) { |
| this.intrinsicName = name; |
| } |
| |
| public String getIntrinsicOrEmptyString() { |
| if (intrinsicName != null) { |
| return " (intrinsic: " + getIntrinsicName() + ")"; |
| } |
| return ""; |
| } |
| } |