1 /*
2 * Copyright (c) 2009, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 /**
26 * A SAX based parser of LogCompilation output from HotSpot. It takes a complete
27 * @author never
28 */
29
30 package com.sun.hotspot.tools.compiler;
31
32 import java.io.FileReader;
33 import java.io.Reader;
34 import java.util.ArrayList;
35 import java.util.Collections;
36 import java.util.Comparator;
37 import java.util.HashMap;
38 import java.util.LinkedHashMap;
39 import java.util.Stack;
40 import javax.xml.parsers.SAXParser;
41 import javax.xml.parsers.SAXParserFactory;
42 import org.xml.sax.Attributes;
43 import org.xml.sax.ErrorHandler;
44 import org.xml.sax.InputSource;
45 import org.xml.sax.helpers.DefaultHandler;
46
47 public class LogParser extends DefaultHandler implements ErrorHandler, Constants {
48
49 static final HashMap<String, String> typeMap;
50 static {
51 typeMap = new HashMap<String, String>();
52 typeMap.put("[I", "int[]");
53 typeMap.put("[C", "char[]");
54 typeMap.put("[Z", "boolean[]");
55 typeMap.put("[L", "Object[]");
56 typeMap.put("[B", "byte[]");
57 }
58
59 static Comparator<LogEvent> sortByStart = new Comparator<LogEvent>() {
60
61 public int compare(LogEvent a, LogEvent b) {
62 double difference = (a.getStart() - b.getStart());
63 if (difference < 0) {
64 return -1;
65 }
66 if (difference > 0) {
67 return 1;
68 }
69 return 0;
70 }
71
72 @Override
73 public boolean equals(Object other) {
74 return false;
75 }
76
77 @Override
78 public int hashCode() {
79 return 7;
80 }
81 };
82 static Comparator<LogEvent> sortByNameAndStart = new Comparator<LogEvent>() {
83
84 public int compare(LogEvent a, LogEvent b) {
85 Compilation c1 = a.getCompilation();
86 Compilation c2 = b.getCompilation();
87 if (c1 != null && c2 != null) {
88 int result = c1.getMethod().toString().compareTo(c2.getMethod().toString());
89 if (result != 0) {
90 return result;
91 }
92 }
93 double difference = (a.getStart() - b.getStart());
94 if (difference < 0) {
95 return -1;
96 }
97 if (difference > 0) {
98 return 1;
99 }
100 return 0;
101 }
102
103 public boolean equals(Object other) {
104 return false;
105 }
106
107 @Override
108 public int hashCode() {
109 return 7;
110 }
111 };
112 static Comparator<LogEvent> sortByElapsed = new Comparator<LogEvent>() {
113
114 public int compare(LogEvent a, LogEvent b) {
115 double difference = (a.getElapsedTime() - b.getElapsedTime());
116 if (difference < 0) {
117 return -1;
118 }
119 if (difference > 0) {
120 return 1;
121 }
122 return 0;
123 }
124
125 @Override
126 public boolean equals(Object other) {
127 return false;
128 }
129
130 @Override
131 public int hashCode() {
132 return 7;
133 }
134 };
135
136 private ArrayList<LogEvent> events = new ArrayList<LogEvent>();
137
138 private HashMap<String, String> types = new HashMap<String, String>();
139 private HashMap<String, Method> methods = new HashMap<String, Method>();
140 private LinkedHashMap<String, NMethod> nmethods = new LinkedHashMap<String, NMethod>();
141 private HashMap<String, Compilation> compiles = new HashMap<String, Compilation>();
142 private String failureReason;
143 private int bci;
144 private Stack<CallSite> scopes = new Stack<CallSite>();
145 private Compilation compile;
146 private CallSite site;
147 private Stack<Phase> phaseStack = new Stack<Phase>();
148 private UncommonTrapEvent currentTrap;
149 private Stack<CallSite> late_inline_scope;
150
151 long parseLong(String l) {
152 try {
153 return Long.decode(l).longValue();
154 } catch (NumberFormatException nfe) {
155 int split = l.length() - 8;
156 String s1 = "0x" + l.substring(split);
157 String s2 = l.substring(0, split);
158 long v1 = Long.decode(s1).longValue() & 0xffffffffL;
159 long v2 = (Long.decode(s2).longValue() & 0xffffffffL) << 32;
160 if (!l.equals("0x" + Long.toHexString(v1 + v2))) {
161 System.out.println(l);
162 System.out.println(s1);
163 System.out.println(s2);
164 System.out.println(v1);
165 System.out.println(v2);
166 System.out.println(Long.toHexString(v1 + v2));
167 throw new InternalError("bad conversion");
168 }
169 return v1 + v2;
170 }
171 }
172
173 public static ArrayList<LogEvent> parse(String file, boolean cleanup) throws Exception {
174 return parse(new FileReader(file), cleanup);
175 }
176
177 public static ArrayList<LogEvent> parse(Reader reader, boolean cleanup) throws Exception {
178 // Create the XML input factory
179 SAXParserFactory factory = SAXParserFactory.newInstance();
180
181 // Create the XML LogEvent reader
182 SAXParser p = factory.newSAXParser();
183
184 if (cleanup) {
185 // some versions of the log have slightly malformed XML, so clean it
186 // up before passing it to SAX
187 reader = new LogCleanupReader(reader);
188 }
189
190 LogParser log = new LogParser();
191 p.parse(new InputSource(reader), log);
192
193 // Associate compilations with their NMethods
194 for (NMethod nm : log.nmethods.values()) {
195 Compilation c = log.compiles.get(nm.getId());
196 nm.setCompilation(c);
197 // Native wrappers for methods don't have a compilation
198 if (c != null) {
199 c.setNMethod(nm);
200 }
201 }
202
203 // Initially we want the LogEvent log sorted by timestamp
204 Collections.sort(log.events, sortByStart);
205
206 return log.events;
207 }
208
209 String search(Attributes attr, String name) {
210 return search(attr, name, null);
211 }
212
213 String search(Attributes attr, String name, String defaultValue) {
214 String result = attr.getValue(name);
215 if (result != null) {
216 return result;
217 }
218 if (defaultValue != null) {
219 return defaultValue;
220 }
221 for (int i = 0; i < attr.getLength(); i++) {
222 System.out.println(attr.getQName(i) + " " + attr.getValue(attr.getQName(i)));
223 }
224 throw new InternalError("can't find " + name);
225 }
226 int indent = 0;
227 String compile_id;
228
229 String type(String id) {
230 String result = types.get(id);
231 if (result == null) {
232 throw new InternalError(id);
233 }
234 String remapped = typeMap.get(result);
235 if (remapped != null) {
236 return remapped;
237 }
238 return result;
239 }
240
241 void type(String id, String name) {
242 assert type(id) == null;
243 types.put(id, name);
244 }
245
246 Method method(String id) {
247 Method result = methods.get(id);
248 if (result == null) {
249 throw new InternalError(id);
250 }
251 return result;
252 }
253
254 public String makeId(Attributes atts) {
255 String id = atts.getValue("compile_id");
256 String kind = atts.getValue("kind");
257 if (kind != null && kind.equals("osr")) {
258 id += "%";
259 }
260 return id;
261 }
262
263 @Override
264 public void startElement(String uri,
265 String localName,
266 String qname,
267 Attributes atts) {
268 if (qname.equals("phase")) {
269 Phase p = new Phase(search(atts, "name"),
270 Double.parseDouble(search(atts, "stamp")),
271 Integer.parseInt(search(atts, "nodes")));
272 phaseStack.push(p);
273 } else if (qname.equals("phase_done")) {
274 Phase p = phaseStack.pop();
275 p.setEndNodes(Integer.parseInt(search(atts, "nodes")));
276 p.setEnd(Double.parseDouble(search(atts, "stamp")));
277 compile.getPhases().add(p);
278 } else if (qname.equals("task")) {
279 compile = new Compilation(Integer.parseInt(search(atts, "compile_id", "-1")));
280 compile.setStart(Double.parseDouble(search(atts, "stamp")));
281 compile.setICount(search(atts, "count", "0"));
282 compile.setBCount(search(atts, "backedge_count", "0"));
283
284 String method = atts.getValue("method");
285 int space = method.indexOf(' ');
286 method = method.substring(0, space) + "::" +
287 method.substring(space + 1, method.indexOf(' ', space + 1) + 1);
288 String compiler = atts.getValue("compiler");
289 if (compiler == null) {
290 compiler = "";
291 }
292 String kind = atts.getValue("compile_kind");
293 if (kind == null) {
294 kind = "normal";
295 }
296 if (kind.equals("osr")) {
297 compile.setOsr(true);
298 compile.setOsr_bci(Integer.parseInt(search(atts, "osr_bci")));
299 } else if (kind.equals("c2i")) {
300 compile.setSpecial("--- adapter " + method);
301 } else {
302 compile.setSpecial(compile.getId() + " " + method + " (0 bytes)");
303 }
304 events.add(compile);
305 compiles.put(makeId(atts), compile);
306 site = compile.getCall();
307 } else if (qname.equals("type")) {
308 type(search(atts, "id"), search(atts, "name"));
309 } else if (qname.equals("bc")) {
310 bci = Integer.parseInt(search(atts, "bci"));
311 } else if (qname.equals("klass")) {
312 type(search(atts, "id"), search(atts, "name"));
313 } else if (qname.equals("method")) {
314 String id = search(atts, "id");
315 Method m = new Method();
316 m.setHolder(type(search(atts, "holder")));
317 m.setName(search(atts, "name"));
318 m.setReturnType(type(search(atts, "return")));
319 m.setArguments(search(atts, "arguments", "void"));
320 m.setBytes(search(atts, "bytes"));
321 m.setIICount(search(atts, "iicount"));
322 m.setFlags(search(atts, "flags"));
323 methods.put(id, m);
324 } else if (qname.equals("call")) {
325 site = new CallSite(bci, method(search(atts, "method")));
326 site.setCount(Integer.parseInt(search(atts, "count")));
327 String receiver = atts.getValue("receiver");
328 if (receiver != null) {
329 site.setReceiver(type(receiver));
330 site.setReceiver_count(Integer.parseInt(search(atts, "receiver_count")));
331 }
332 scopes.peek().add(site);
333 } else if (qname.equals("regalloc")) {
334 compile.setAttempts(Integer.parseInt(search(atts, "attempts")));
335 } else if (qname.equals("inline_fail")) {
336 scopes.peek().last().setReason(search(atts, "reason"));
337 } else if (qname.equals("failure")) {
338 failureReason = search(atts, "reason");
339 } else if (qname.equals("task_done")) {
340 compile.setEnd(Double.parseDouble(search(atts, "stamp")));
341 if (Integer.parseInt(search(atts, "success")) == 0) {
342 compile.setFailureReason(failureReason);
343 }
344 } else if (qname.equals("make_not_entrant")) {
345 String id = makeId(atts);
346 NMethod nm = nmethods.get(id);
347 if (nm == null) throw new InternalError();
348 LogEvent e = new MakeNotEntrantEvent(Double.parseDouble(search(atts, "stamp")), id,
349 atts.getValue("zombie") != null, nm);
350 events.add(e);
351 } else if (qname.equals("uncommon_trap")) {
352 String id = atts.getValue("compile_id");
353 if (id != null) {
354 id = makeId(atts);
355 currentTrap = new UncommonTrapEvent(Double.parseDouble(search(atts, "stamp")),
356 id,
357 atts.getValue("reason"),
358 atts.getValue("action"),
359 Integer.parseInt(search(atts, "count", "0")));
360 events.add(currentTrap);
361 } else {
362 // uncommon trap inserted during parsing.
363 // ignore for now
364 }
365 } else if (qname.equals("late_inline")) {
366 late_inline_scope = new Stack<CallSite>();
367 site = new CallSite(-999, method(search(atts, "method")));
368 late_inline_scope.push(site);
369 } else if (qname.equals("jvms")) {
370 // <jvms bci='4' method='java/io/DataInputStream readChar ()C' bytes='40' count='5815' iicount='20815'/>
371 if (currentTrap != null) {
372 currentTrap.addJVMS(atts.getValue("method"), Integer.parseInt(atts.getValue("bci")));
373 } else if (late_inline_scope != null) {
374 bci = Integer.parseInt(search(atts, "bci"));
375 site = new CallSite(bci, method(search(atts, "method")));
376 late_inline_scope.push(site);
377 } else {
378 // Ignore <eliminate_allocation type='667'>,
379 // <eliminate_lock lock='1'>,
380 // <replace_string_concat arguments='2' string_alloc='0' multiple='0'>
381 }
382 } else if (qname.equals("nmethod")) {
383 String id = makeId(atts);
384 NMethod nm = new NMethod(Double.parseDouble(search(atts, "stamp")),
385 id,
386 parseLong(atts.getValue("address")),
387 parseLong(atts.getValue("size")));
388 nmethods.put(id, nm);
389 events.add(nm);
390 } else if (qname.equals("parse")) {
391 Method m = method(search(atts, "method"));
392 if (scopes.size() == 0) {
393 compile.setMethod(m);
394 scopes.push(site);
395 } else {
396 if (site.getMethod() == m) {
397 scopes.push(site);
398 } else if (scopes.peek().getCalls().size() > 2 && m == scopes.peek().last(-2).getMethod()) {
399 scopes.push(scopes.peek().last(-2));
400 } else {
401 System.out.println(site.getMethod());
402 System.out.println(m);
403 throw new InternalError("call site and parse don't match");
404 }
405 }
406 } else if (qname.equals("parse_done")) {
407 CallSite call = scopes.pop();
408 call.setEndNodes(Integer.parseInt(search(atts, "nodes", "1")));
409 call.setTimeStamp(Double.parseDouble(search(atts, "stamp")));
410 scopes.push(call);
411 }
412 }
413
414 @Override
415 public void endElement(String uri,
416 String localName,
417 String qname) {
418 if (qname.equals("parse")) {
419 indent -= 2;
420 scopes.pop();
421 } else if (qname.equals("uncommon_trap")) {
422 currentTrap = null;
423 } else if (qname.equals("late_inline")) {
424 // Populate late inlining info.
425
426 // late_inline scopes are specified in reverse order:
427 // compiled method should be on top of stack.
428 CallSite caller = late_inline_scope.pop();
429 Method m = compile.getMethod();
430 if (m != caller.getMethod()) {
431 System.out.println(m);
432 System.out.println(caller.getMethod() + " bci: " + bci);
433 throw new InternalError("call site and late_inline info don't match");
434 }
435
436 // late_inline contains caller+bci info, convert it
437 // to bci+callee info used by LogCompilation.
438 site = compile.getLateInlineCall();
439 do {
440 bci = caller.getBci();
441 // Next inlined call.
442 caller = late_inline_scope.pop();
443 CallSite callee = new CallSite(bci, caller.getMethod());
444 site.add(callee);
445 site = callee;
446 } while (!late_inline_scope.empty());
447
448 if (caller.getBci() != -999) {
449 System.out.println(caller.getMethod());
450 throw new InternalError("broken late_inline info");
451 }
452 if (site.getMethod() != caller.getMethod()) {
453 System.out.println(site.getMethod());
454 System.out.println(caller.getMethod());
455 throw new InternalError("call site and late_inline info don't match");
456 }
457 // late_inline is followed by parse with scopes.size() == 0,
458 // 'site' will be pushed to scopes.
459 late_inline_scope = null;
460 } else if (qname.equals("task")) {
461 types.clear();
462 methods.clear();
463 site = null;
464 }
465 }
466
467 @Override
468 public void warning(org.xml.sax.SAXParseException e) {
469 System.err.println(e.getMessage() + " at line " + e.getLineNumber() + ", column " + e.getColumnNumber());
470 e.printStackTrace();
471 }
472
473 @Override
474 public void error(org.xml.sax.SAXParseException e) {
475 System.err.println(e.getMessage() + " at line " + e.getLineNumber() + ", column " + e.getColumnNumber());
476 e.printStackTrace();
477 }
478
479 @Override
480 public void fatalError(org.xml.sax.SAXParseException e) {
481 System.err.println(e.getMessage() + " at line " + e.getLineNumber() + ", column " + e.getColumnNumber());
482 e.printStackTrace();
483 }
484 }