org.teavm.cache.DiskProgramCache Maven / Gradle / Ivy
/*
* Copyright 2014 Alexey Andreev.
*
* Licensed under the Apache 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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.teavm.cache;
import java.io.*;
import java.util.*;
import org.teavm.model.*;
import org.teavm.model.instructions.*;
import org.teavm.parsing.ClassDateProvider;
/**
*
* @author Alexey Andreev
*/
public class DiskProgramCache implements ProgramCache {
private File directory;
private ProgramIO programIO;
private Map cache = new HashMap<>();
private Set newMethods = new HashSet<>();
private ClassDateProvider classDateProvider;
public DiskProgramCache(File directory, SymbolTable symbolTable, SymbolTable fileTable,
ClassDateProvider classDateProvider) {
this.directory = directory;
programIO = new ProgramIO(symbolTable, fileTable);
this.classDateProvider = classDateProvider;
}
@Override
public Program get(MethodReference method) {
Item item = cache.get(method);
if (item == null) {
item = new Item();
cache.put(method, item);
File file = getMethodFile(method);
if (file.exists()) {
try (InputStream stream = new BufferedInputStream(new FileInputStream(file))) {
DataInput input = new DataInputStream(stream);
int depCount = input.readShort();
boolean dependenciesChanged = false;
for (int i = 0; i < depCount; ++i) {
String depClass = input.readUTF();
Date depDate = classDateProvider.getModificationDate(depClass);
if (depDate == null || depDate.after(new Date(file.lastModified()))) {
dependenciesChanged = true;
break;
}
}
if (!dependenciesChanged) {
item.program = programIO.read(stream);
}
} catch (IOException e) {
// we could not read program, just leave it empty
}
}
}
return item.program;
}
@Override
public void store(MethodReference method, Program program) {
Item item = new Item();
cache.put(method, item);
item.program = program;
newMethods.add(method);
}
public void flush() throws IOException {
for (MethodReference method : newMethods) {
File file = getMethodFile(method);
ProgramDependencyAnalyzer analyzer = new ProgramDependencyAnalyzer();
analyzer.dependencies.add(method.getClassName());
Program program = cache.get(method).program;
for (int i = 0; i < program.basicBlockCount(); ++i) {
BasicBlock block = program.basicBlockAt(i);
for (Instruction insn : block.getInstructions()) {
insn.acceptVisitor(analyzer);
}
}
file.getParentFile().mkdirs();
try (OutputStream stream = new BufferedOutputStream(new FileOutputStream(file))) {
DataOutput output = new DataOutputStream(stream);
output.writeShort(analyzer.dependencies.size());
for (String dep : analyzer.dependencies) {
output.writeUTF(dep);
}
programIO.write(program, stream);
}
}
}
private File getMethodFile(MethodReference method) {
File dir = new File(directory, method.getClassName().replace('.', '/'));
return new File(dir, FileNameEncoder.encodeFileName(method.getDescriptor().toString()) + ".teavm-opt");
}
static class Item {
Program program;
}
static class ProgramDependencyAnalyzer implements InstructionVisitor {
Set dependencies = new HashSet<>();
@Override public void visit(GetFieldInstruction insn) {
dependencies.add(insn.getField().getClassName());
}
@Override public void visit(PutFieldInstruction insn) {
dependencies.add(insn.getField().getClassName());
}
@Override public void visit(InvokeInstruction insn) {
dependencies.add(insn.getMethod().getClassName());
}
@Override
public void visit(InvokeDynamicInstruction insn) {
for (RuntimeConstant cst : insn.getBootstrapArguments()) {
if (cst.getKind() == RuntimeConstant.METHOD_HANDLE) {
MethodHandle handle = cst.getMethodHandle();
dependencies.add(handle.getClassName());
}
}
}
@Override public void visit(EmptyInstruction insn) { }
@Override public void visit(ClassConstantInstruction insn) { }
@Override public void visit(NullConstantInstruction insn) { }
@Override public void visit(IntegerConstantInstruction insn) { }
@Override public void visit(LongConstantInstruction insn) { }
@Override public void visit(FloatConstantInstruction insn) { }
@Override public void visit(DoubleConstantInstruction insn) { }
@Override public void visit(StringConstantInstruction insn) { }
@Override public void visit(BinaryInstruction insn) { }
@Override public void visit(NegateInstruction insn) { }
@Override public void visit(AssignInstruction insn) { }
@Override public void visit(CastInstruction insn) { }
@Override public void visit(CastNumberInstruction insn) { }
@Override public void visit(CastIntegerInstruction insn) { }
@Override public void visit(BranchingInstruction insn) { }
@Override public void visit(BinaryBranchingInstruction insn) { }
@Override public void visit(JumpInstruction insn) { }
@Override public void visit(SwitchInstruction insn) { }
@Override public void visit(ExitInstruction insn) { }
@Override public void visit(RaiseInstruction insn) { }
@Override public void visit(ConstructArrayInstruction insn) { }
@Override public void visit(ConstructInstruction insn) { }
@Override public void visit(ConstructMultiArrayInstruction insn) { }
@Override public void visit(ArrayLengthInstruction insn) { }
@Override public void visit(CloneArrayInstruction insn) { }
@Override public void visit(UnwrapArrayInstruction insn) { }
@Override public void visit(GetElementInstruction insn) { }
@Override public void visit(PutElementInstruction insn) { }
@Override public void visit(IsInstanceInstruction insn) { }
@Override public void visit(InitClassInstruction insn) { }
@Override public void visit(NullCheckInstruction insn) { }
@Override public void visit(MonitorEnterInstruction insn) { }
@Override public void visit(MonitorExitInstruction insn) { }
}
}
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