The second pass Class, method execution logic instrumented

A method of trace entry is MethodTracer

the trace void public (the Map <File, File> srcFolderList, the Map <File, File> dependencyJarList) {
traceMethodFromSrc (srcFolderList);
traceMethodFromJar (dependencyJarList);
}
copy the code
each directory, jar instrumentation package

private void innerTraceMethodFromSrc(File input, File output) {

...
if (mTraceConfig.isNeedTraceClass(classFile.getName())) {
is = new FileInputStream(classFile);
ClassReader classReader = new ClassReader(is);
ClassWriter classWriter = new ClassWriter(ClassWriter.COMPUTE_MAXS);
ClassVisitor classVisitor = new TraceClassAdapter(Opcodes.ASM5, classWriter);
classReader.accept(classVisitor, ClassReader.EXPAND_FRAMES);
...
}

private void innerTraceMethodFromJar(File input, File output) {
...
if (mTraceConfig.isNeedTraceClass(zipEntryName)) {
InputStream inputStream = zipFile.getInputStream(zipEntry);
ClassReader classReader = new ClassReader(inputStream);
ClassWriter classWriter = new ClassWriter(ClassWriter.COMPUTE_MAXS);
ClassVisitor classVisitor = new TraceClassAdapter(Opcodes.ASM5, classWriter);
classReader.accept(classVisitor, ClassReader.EXPAND_FRAMES);
byte[] data = classWriter.toByteArray();
InputStream byteArrayInputStream = new ByteArrayInputStream(data);
ZipEntry newZipEntry = new ZipEntry(zipEntryName);
FileUtil.addZipEntry(zipOutputStream, newZipEntry, byteArrayInputStream);
...