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/*
***** BEGIN LICENSE BLOCK *****
* Version: EPL 2.0/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Eclipse Public
* License Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.eclipse.org/legal/epl-v20.html
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* Copyright (C) 2006-2007 Thomas E Enebo <enebo@acm.org>
* Copyright (C) 2006-2007 Charles Nutter <headius@headius.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the EPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the EPL, the GPL or the LGPL.
***** END LICENSE BLOCK *****/
package org.jruby.runtime;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import org.jruby.RubyInstanceConfig;
import org.jruby.anno.FrameField;
import org.jruby.ir.IRScope;
import org.jruby.runtime.callsite.DivCallSite;
import org.jruby.runtime.callsite.LtCallSite;
import org.jruby.runtime.callsite.LeCallSite;
import org.jruby.runtime.callsite.MinusCallSite;
import org.jruby.runtime.callsite.ModCallSite;
import org.jruby.runtime.callsite.MulCallSite;
import org.jruby.runtime.callsite.MonomorphicCallSite;
import org.jruby.runtime.callsite.GtCallSite;
import org.jruby.runtime.callsite.NotEqCallSite;
import org.jruby.runtime.callsite.PlusCallSite;
import org.jruby.runtime.callsite.GeCallSite;
import org.jruby.runtime.callsite.CmpCallSite;
import org.jruby.runtime.callsite.EqCallSite;
import org.jruby.runtime.callsite.BitAndCallSite;
import org.jruby.runtime.callsite.BitOrCallSite;
import org.jruby.runtime.callsite.FunctionalCachingCallSite;
import org.jruby.runtime.callsite.ProfilingCachingCallSite;
import org.jruby.runtime.callsite.RespondToCallSite;
import org.jruby.runtime.callsite.ShiftLeftCallSite;
import org.jruby.runtime.callsite.ShiftRightCallSite;
import org.jruby.runtime.callsite.SuperCallSite;
import org.jruby.runtime.callsite.VariableCachingCallSite;
import org.jruby.runtime.callsite.XorCallSite;
import org.jruby.runtime.invokedynamic.MethodNames;
import org.jruby.util.StringSupport;
import org.jruby.util.log.Logger;
import org.jruby.util.log.LoggerFactory;
import static java.util.stream.Collectors.toSet;
import static java.util.stream.Stream.concat;
public class MethodIndex {
private static final boolean DEBUG = false;
private static final Logger LOG = LoggerFactory.getLogger(MethodIndex.class);
public static final Set<String> FRAME_AWARE_METHODS = Collections.synchronizedSet(new HashSet<String>());
public static final Set<String> SCOPE_AWARE_METHODS = Collections.synchronizedSet(new HashSet<String>());
public static final Map<String, Set<FrameField>> METHOD_FRAME_READS = new ConcurrentHashMap<>();
public static final Map<String, Set<FrameField>> METHOD_FRAME_WRITES = new ConcurrentHashMap<>();
public static CallSite getCallSite(String name) {
// fast and safe respond_to? call site logic
if (name.equals("respond_to?")) return new RespondToCallSite();
CallSite callSite = null;
// only use fast ops if we're not tracing
if (!(RubyInstanceConfig.FULL_TRACE_ENABLED)) {
callSite = getFastFixnumOpsCallSite(name);
}
return callSite != null ? callSite : new MonomorphicCallSite(name);
}
public static CallSite getProfilingCallSite(CallType callType, String name, IRScope scope, long callsiteId) {
return new ProfilingCachingCallSite(callType, name, scope, callsiteId);
}
public static boolean hasFastFixnumOps(String name) {
return getFastFixnumOpsMethod(name) != null;
}
public static String getFastFixnumOpsMethod(String name) {
switch (name) {
case "+" : return "op_plus";
case "-" : return "op_minus";
case "*" : return "op_mul";
case "%" : return "op_mod";
case "/" : return "op_div";
case "&" : return "op_and";
case "|" : return "op_or";
case "^" : return "op_xor";
case ">>" : return "op_rshift";
case "<<" : return "op_lshift";
case "!=" : return "op_not_equal";
case "==" : return "op_equal";
case "<" : return "op_lt";
case "<=" : return "op_le";
case ">" : return "op_gt";
case ">=" : return "op_ge";
case "<=>": return "op_cmp";
}
return null;
}
public static CallSite getFastFixnumOpsCallSite(String name) {
switch (name) {
case "+" : return new PlusCallSite();
case "-" : return new MinusCallSite();
case "*" : return new MulCallSite();
case "%" : return new ModCallSite();
case "/" : return new DivCallSite();
case "&" : return new BitAndCallSite();
case "|" : return new BitOrCallSite();
case "^" : return new XorCallSite();
case ">>" : return new ShiftRightCallSite();
case "<<" : return new ShiftLeftCallSite();
case "!=" : return new NotEqCallSite();
case "==" : return new EqCallSite();
case "<" : return new LtCallSite();
case "<=" : return new LeCallSite();
case ">" : return new GtCallSite();
case ">=" : return new GeCallSite();
case "<=>" : return new CmpCallSite();
}
return null;
}
public static boolean hasFastFloatOps(String name) {
return getFastFloatOpsMethod(name) != null;
}
public static String getFastFloatOpsMethod(String name) {
switch (name) {
case "+" : return "op_plus";
case "-" : return "op_minus";
case "*" : return "op_mul";
case "%" : return "op_mod";
case "/" : return "op_div";
case "==" : return "op_equal";
case "<" : return "op_lt";
case "<=" : return "op_le";
case ">" : return "op_gt";
case ">=" : return "op_ge";
case "<=>": return "op_cmp";
}
return null;
}
public static CallSite getFastFloatOpsCallSite(String name) {
switch (name) {
case "+" : return new PlusCallSite();
case "-" : return new MinusCallSite();
case "*" : return new MulCallSite();
case "%" : return new ModCallSite();
case "/" : return new DivCallSite();
case "==" : return new EqCallSite();
case "<" : return new LtCallSite();
case "<=" : return new LeCallSite();
case ">" : return new GtCallSite();
case ">=" : return new GeCallSite();
case "<=>" : return new CmpCallSite();
}
return null;
}
public static CallSite getFunctionalCallSite(String name) {
return new FunctionalCachingCallSite(name);
}
public static CallSite getVariableCallSite(String name) {
return new VariableCachingCallSite(name);
}
public static CallSite getSuperCallSite() {
return new SuperCallSite();
}
public static void addMethodReadFieldsPacked(int readBits, String methodsPacked) {
processFrameFields(readBits, methodsPacked, "read", METHOD_FRAME_READS);
}
public static void addMethodWriteFieldsPacked(int writeBits, String methodsPacked) {
processFrameFields(writeBits, methodsPacked, "write", METHOD_FRAME_WRITES);
}
private static void processFrameFields(int bits, String methodNames, String usage, Map<String, Set<FrameField>> methodFrameAccesses) {
Set<FrameField> writes = FrameField.unpack(bits);
boolean needsFrame = FrameField.needsFrame(bits);
boolean needsScope = FrameField.needsScope(bits);
if (DEBUG) LOG.debug("Adding method fields for {}: {} for {}", usage, writes, methodNames);
if (writes.size() > 0) {
List<String> names = StringSupport.split(methodNames, ';');
addAwareness(needsFrame, needsScope, names);
addFieldAccesses(methodFrameAccesses, names, writes);
}
}
private static void addFieldAccesses(Map<String, Set<FrameField>> methodFrameWrites, List<String> names, Set<FrameField> writes) {
for (String name : names) {
methodFrameWrites.compute(
name,
(key, cur) -> cur == null ? writes : concat(cur.stream(), writes.stream()).collect(toSet()));
}
}
private static void addAwareness(boolean needsFrame, boolean needsScope, List<String> names) {
if (needsFrame) FRAME_AWARE_METHODS.addAll(names);
if (needsScope) SCOPE_AWARE_METHODS.addAll(names);
}
public static void addMethodReadFields(String name, FrameField... reads) {
addMethodReadFieldsPacked(FrameField.pack(reads), name);
}
public static void addMethodWriteFields(String name, FrameField... write) {
addMethodWriteFieldsPacked(FrameField.pack(write), name);
}
}