Mercurial > hg > truffle
annotate src/share/tools/MakeDeps/Database.java @ 1656:4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
Summary: G1 was not handling explicit GCs correctly in many ways. It does now. See the CR for the list of improvements contained in this changeset.
Reviewed-by: iveresov, ysr, johnc
author | tonyp |
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date | Mon, 28 Jun 2010 14:13:17 -0400 |
parents | c18cbe5936b8 |
children |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2009, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 import java.io.*; | |
26 import java.util.*; | |
27 | |
28 public class Database { | |
29 private MacroDefinitions macros; | |
30 // allFiles is kept in lexicographically sorted order. See get(). | |
31 private FileList allFiles; | |
32 // files that have implicit dependency on platform files | |
33 // e.g. os.hpp: os_<os_family>.hpp os_<os_arch>.hpp but only | |
34 // recorded if the platform file was seen. | |
35 private FileList platformFiles; | |
36 private FileList outerFiles; | |
37 private FileList indivIncludes; | |
38 private FileList grandInclude; // the results for the grand include file | |
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39 private HashMap<String,String> platformDepFiles; |
0 | 40 private long threshold; |
41 private int nOuterFiles; | |
42 private boolean missingOk; | |
43 private Platform plat; | |
44 /** These allow you to specify files not in the include database | |
45 which are prepended and appended to the file list, allowing | |
46 you to have well-known functions at the start and end of the | |
47 text segment (allows us to find out in a portable fashion | |
48 whether the current PC is in VM code or not upon a crash) */ | |
49 private String firstFile; | |
50 private String lastFile; | |
51 | |
52 public Database(Platform plat, long t) { | |
53 this.plat = plat; | |
54 macros = new MacroDefinitions(); | |
55 allFiles = new FileList("allFiles", plat); | |
56 platformFiles = new FileList("platformFiles", plat); | |
57 outerFiles = new FileList("outerFiles", plat); | |
58 indivIncludes = new FileList("IndivIncludes", plat); | |
59 grandInclude = new FileList(plat.getGIFileTemplate().nameOfList(), plat); | |
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60 platformDepFiles = new HashMap<String,String>(); |
0 | 61 |
62 threshold = t; | |
63 nOuterFiles = 0; | |
64 missingOk = false; | |
65 firstFile = null; | |
66 lastFile = null; | |
67 }; | |
68 | |
69 public FileList getAllFiles() { | |
70 return allFiles; | |
71 } | |
72 | |
73 public Iterator getMacros() { | |
74 return macros.getMacros(); | |
75 } | |
76 | |
77 public void canBeMissing() { | |
78 missingOk = true; | |
79 } | |
80 | |
81 public boolean hfileIsInGrandInclude(FileList hfile, FileList cfile) { | |
82 return ((hfile.getCount() >= threshold) && (cfile.getUseGrandInclude())); | |
83 } | |
84 | |
85 /** These allow you to specify files not in the include database | |
86 which are prepended and appended to the file list, allowing | |
87 you to have well-known functions at the start and end of the | |
88 text segment (allows us to find out in a portable fashion | |
89 whether the current PC is in VM code or not upon a crash) */ | |
90 public void setFirstFile(String fileName) { | |
91 firstFile = fileName; | |
92 } | |
93 | |
94 public void setLastFile(String fileName) { | |
95 lastFile = fileName; | |
96 } | |
97 | |
98 public void get(String platFileName, String dbFileName) | |
99 throws FileFormatException, IOException, FileNotFoundException { | |
100 macros.readFrom(platFileName, missingOk); | |
101 | |
102 BufferedReader reader = null; | |
103 try { | |
104 reader = new BufferedReader(new FileReader(dbFileName)); | |
105 } catch (FileNotFoundException e) { | |
106 if (missingOk) { | |
107 return; | |
108 } else { | |
109 throw(e); | |
110 } | |
111 } | |
112 System.out.println("\treading database: " + dbFileName); | |
113 String line; | |
114 int lineNo = 0; | |
115 do { | |
116 line = reader.readLine(); | |
117 lineNo++; | |
118 if (line != null) { | |
119 StreamTokenizer tokenizer = | |
120 new StreamTokenizer(new StringReader(line)); | |
121 tokenizer.slashSlashComments(true); | |
122 tokenizer.wordChars('_', '_'); | |
123 tokenizer.wordChars('<', '>'); | |
124 // NOTE: if we didn't have to do this line by line, | |
125 // we could trivially recognize C-style comments as | |
126 // well. | |
127 // tokenizer.slashStarComments(true); | |
128 int numTok = 0; | |
129 int res; | |
130 String unexpandedIncluder = null; | |
131 String unexpandedIncludee = null; | |
132 do { | |
133 res = tokenizer.nextToken(); | |
134 if (res != StreamTokenizer.TT_EOF) { | |
135 if (numTok == 0) { | |
136 unexpandedIncluder = tokenizer.sval; | |
137 } else if (numTok == 1) { | |
138 unexpandedIncludee = tokenizer.sval; | |
139 } else { | |
140 throw new FileFormatException( | |
141 "invalid line: \"" + line + | |
142 "\". Error position: line " + lineNo | |
143 ); | |
144 } | |
145 numTok++; | |
146 } | |
147 } while (res != StreamTokenizer.TT_EOF); | |
148 | |
149 if ((numTok != 0) && (numTok != 2)) { | |
150 throw new FileFormatException( | |
151 "invalid line: \"" + line + | |
152 "\". Error position: line " + lineNo | |
153 ); | |
154 } | |
155 | |
156 if (numTok == 2) { | |
157 // Non-empty line | |
158 String includer = macros.expand(unexpandedIncluder); | |
159 String includee = macros.expand(unexpandedIncludee); | |
160 | |
161 if (includee.equals(plat.generatePlatformDependentInclude())) { | |
162 MacroDefinitions localExpander = macros.copy(); | |
163 MacroDefinitions localExpander2 = macros.copy(); | |
164 localExpander.setAllMacroBodiesTo("pd"); | |
165 localExpander2.setAllMacroBodiesTo(""); | |
166 | |
167 // unexpanded_includer e.g. thread_<os_arch>.hpp | |
168 // thread_solaris_i486.hpp -> _thread_pd.hpp.incl | |
169 | |
170 FileName pdName = | |
171 plat.getInclFileTemplate().copyStem( | |
172 localExpander.expand(unexpandedIncluder) | |
173 ); | |
174 | |
175 // derive generic name from platform specific name | |
176 // e.g. os_<arch_os>.hpp => os.hpp. We enforce the | |
177 // restriction (imperfectly) noted in includeDB_core | |
178 // that platform specific files will have an underscore | |
179 // preceding the macro invocation. | |
180 | |
181 // First expand macro as null string. | |
182 | |
183 String newIncluder_temp = | |
184 localExpander2.expand(unexpandedIncluder); | |
185 | |
186 // Now find "_." and remove the underscore. | |
187 | |
188 String newIncluder = ""; | |
189 | |
190 int len = newIncluder_temp.length(); | |
191 int count = 0; | |
192 | |
193 for ( int i = 0; i < len - 1 ; i++ ) { | |
194 if (newIncluder_temp.charAt(i) == '_' && newIncluder_temp.charAt(i+1) == '.') { | |
195 count++; | |
196 } else { | |
197 newIncluder += newIncluder_temp.charAt(i); | |
198 } | |
199 } | |
200 newIncluder += newIncluder_temp.charAt(len-1); | |
201 | |
202 if (count != 1) { | |
203 throw new FileFormatException( | |
204 "Unexpected filename format for platform dependent file.\nline: \"" + line + | |
205 "\".\nError position: line " + lineNo | |
206 ); | |
207 } | |
208 | |
209 FileList p = allFiles.listForFile(includer); | |
210 p.setPlatformDependentInclude(pdName.dirPreStemSuff()); | |
211 | |
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212 // Record the implicit include of this file so that the |
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213 // dependencies for precompiled headers can mention it. |
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214 platformDepFiles.put(newIncluder, includer); |
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215 |
0 | 216 // Add an implicit dependency on platform |
217 // specific file for the generic file | |
218 | |
219 p = platformFiles.listForFile(newIncluder); | |
220 | |
221 // if this list is empty then this is 1st | |
222 // occurance of a platform dependent file and | |
223 // we need a new version of the include file. | |
224 // Otherwise we just append to the current | |
225 // file. | |
226 | |
227 PrintWriter pdFile = | |
228 new PrintWriter( | |
229 new FileWriter(pdName.dirPreStemSuff(), | |
230 !p.isEmpty()) | |
231 ); | |
232 pdFile.println("# include \"" + includer + "\""); | |
233 pdFile.close(); | |
234 | |
235 // Add the platform specific file to the list | |
236 // for this generic file. | |
237 | |
238 FileList q = allFiles.listForFile(includer); | |
239 p.addIfAbsent(q); | |
240 } else { | |
241 FileList p = allFiles.listForFile(includer); | |
242 if (isOuterFile(includer)) | |
243 outerFiles.addIfAbsent(p); | |
244 | |
245 if (includee.equals(plat.noGrandInclude())) { | |
246 p.setUseGrandInclude(false); | |
247 } else { | |
248 FileList q = allFiles.listForFile(includee); | |
249 p.addIfAbsent(q); | |
250 } | |
251 } | |
252 } | |
253 } | |
254 } while (line != null); | |
255 reader.close(); | |
256 | |
257 // Keep allFiles in well-known order so we can easily determine | |
258 // whether the known files are the same | |
259 allFiles.sortByName(); | |
260 | |
261 // Add first and last files differently to prevent a mistake | |
262 // in ordering in the include databases from breaking the | |
263 // error reporting in the VM. | |
264 if (firstFile != null) { | |
265 FileList p = allFiles.listForFile(firstFile); | |
266 allFiles.setFirstFile(p); | |
267 outerFiles.setFirstFile(p); | |
268 } | |
269 | |
270 if (lastFile != null) { | |
271 FileList p = allFiles.listForFile(lastFile); | |
272 allFiles.setLastFile(p); | |
273 outerFiles.setLastFile(p); | |
274 } | |
275 } | |
276 | |
277 public void compute() { | |
278 System.out.println("\tcomputing closures\n"); | |
279 // build both indiv and grand results | |
280 for (Iterator iter = outerFiles.iterator(); iter.hasNext(); ) { | |
281 indivIncludes.add(((FileList) iter.next()).doCFile()); | |
282 ++nOuterFiles; | |
283 } | |
284 | |
285 if (!plat.haveGrandInclude()) | |
286 return; // nothing in grand include | |
287 | |
288 // count how many times each include is included & add em to grand | |
289 for (Iterator iter = indivIncludes.iterator(); iter.hasNext(); ) { | |
290 FileList indivInclude = (FileList) iter.next(); | |
291 if (!indivInclude.getUseGrandInclude()) { | |
292 continue; // do not bump count if my files cannot be | |
293 // in grand include | |
294 } | |
295 indivInclude.doFiles(grandInclude); // put em on | |
296 // grand_include list | |
297 for (Iterator incListIter = indivInclude.iterator(); | |
298 incListIter.hasNext(); ) { | |
299 ((FileList) incListIter.next()).incrementCount(); | |
300 } | |
301 } | |
302 } | |
303 | |
304 // Not sure this is necessary in Java | |
305 public void verify() { | |
306 for (Iterator iter = indivIncludes.iterator(); iter.hasNext(); ) { | |
307 if (iter.next() == null) { | |
308 plat.abort(); | |
309 } | |
310 } | |
311 } | |
312 | |
313 public void put() throws IOException { | |
314 writeIndividualIncludes(); | |
315 | |
316 if (plat.haveGrandInclude()) | |
317 writeGrandInclude(); | |
318 | |
319 writeGrandUnixMakefile(); | |
320 } | |
321 | |
322 private void writeIndividualIncludes() throws IOException { | |
323 System.out.println("\twriting individual include files\n"); | |
324 | |
325 for (Iterator iter = indivIncludes.iterator(); iter.hasNext(); ) { | |
326 FileList list = (FileList) iter.next(); | |
327 System.out.println("\tcreating " + list.getName()); | |
328 list.putInclFile(this); | |
329 } | |
330 } | |
331 | |
332 private void writeGrandInclude() throws IOException { | |
333 System.out.println("\twriting grand include file\n"); | |
334 PrintWriter inclFile = | |
335 new PrintWriter(new FileWriter(plat.getGIFileTemplate().dirPreStemSuff())); | |
336 plat.writeGIPragma(inclFile); | |
337 for (Iterator iter = grandInclude.iterator(); iter.hasNext(); ) { | |
338 FileList list = (FileList) iter.next(); | |
339 if (list.getCount() >= threshold) { | |
340 inclFile.println("# include \"" + | |
341 plat.getGIFileTemplate().getInvDir() + | |
342 list.getName() + | |
343 "\""); | |
344 } | |
345 } | |
346 inclFile.println(); | |
347 inclFile.close(); | |
348 } | |
349 | |
350 private void writeGrandUnixMakefile() throws IOException { | |
351 if (!plat.writeDeps()) | |
352 return; | |
353 | |
354 System.out.println("\twriting dependencies file\n"); | |
355 PrintWriter gd = | |
356 new PrintWriter(new FileWriter( | |
357 plat.getGDFileTemplate().dirPreStemSuff()) | |
358 ); | |
359 gd.println("# generated by makeDeps"); | |
360 gd.println(); | |
361 | |
362 | |
363 // HACK ALERT. The compilation of ad_<arch> files is very slow. | |
364 // We want to start compiling them as early as possible. The compilation | |
605 | 365 // order on unix is dependent on the order we emit files here. |
0 | 366 // By sorting the output before emitting it, we expect |
367 // that ad_<arch> will be compiled early. | |
368 boolean shouldSortObjFiles = true; | |
369 | |
370 if (shouldSortObjFiles) { | |
371 ArrayList sortList = new ArrayList(); | |
372 | |
373 // We need to preserve the ordering of the first and last items | |
374 // in outerFiles. | |
375 int size = outerFiles.size() - 1; | |
376 String firstName = removeSuffixFrom(((FileList)outerFiles.get(0)).getName()); | |
377 String lastName = removeSuffixFrom(((FileList)outerFiles.get(size)).getName()); | |
378 | |
379 for (int i=1; i<size; i++) { | |
380 FileList anOuterFile = (FileList)outerFiles.get(i); | |
381 String stemName = removeSuffixFrom(anOuterFile.getName()); | |
382 sortList.add(stemName); | |
383 } | |
384 Collections.sort(sortList); | |
385 | |
386 // write Obj_Files = ... | |
387 gd.println("Obj_Files = \\"); | |
388 gd.println(firstName + plat.objFileSuffix() + " \\"); | |
389 for (Iterator iter = sortList.iterator(); iter.hasNext(); ) { | |
390 gd.println(iter.next() + plat.objFileSuffix() + " \\"); | |
391 } | |
392 gd.println(lastName + plat.objFileSuffix() + " \\"); | |
393 gd.println(); | |
394 gd.println(); | |
395 } else { | |
396 // write Obj_Files = ... | |
397 gd.println("Obj_Files = \\"); | |
398 for (Iterator iter = outerFiles.iterator(); iter.hasNext(); ) { | |
399 FileList anOuterFile = (FileList) iter.next(); | |
400 | |
401 String stemName = removeSuffixFrom(anOuterFile.getName()); | |
402 gd.println(stemName + plat.objFileSuffix() + " \\"); | |
403 } | |
404 gd.println(); | |
405 gd.println(); | |
406 } | |
407 | |
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408 // write Precompiled_Files = ... |
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409 gd.println("Precompiled_Files = \\"); |
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410 for (Iterator iter = grandInclude.iterator(); iter.hasNext(); ) { |
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411 FileList list = (FileList) iter.next(); |
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412 if (list.getCount() >= threshold) { |
0 | 413 gd.println(list.getName() + " \\"); |
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414 String platformDep = platformDepFiles.get(list.getName()); |
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415 if (platformDep != null) { |
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416 // make sure changes to the platform dependent file will |
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417 // cause regeneration of the pch file. |
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418 gd.println(platformDep + " \\"); |
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419 } |
0 | 420 } |
421 } | |
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422 gd.println(); |
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423 gd.println(); |
0 | 424 |
425 gd.println("DTraced_Files = \\"); | |
426 for (Iterator iter = outerFiles.iterator(); iter.hasNext(); ) { | |
427 FileList anOuterFile = (FileList) iter.next(); | |
428 | |
429 if (anOuterFile.hasListForFile("dtrace.hpp")) { | |
430 String stemName = removeSuffixFrom(anOuterFile.getName()); | |
431 gd.println(stemName + plat.objFileSuffix() + " \\"); | |
432 } | |
433 } | |
434 gd.println(); | |
435 gd.println(); | |
436 | |
437 { | |
438 // write each dependency | |
439 | |
440 for (Iterator iter = indivIncludes.iterator(); iter.hasNext(); ) { | |
441 | |
442 FileList anII = (FileList) iter.next(); | |
443 | |
444 String stemName = removeSuffixFrom(anII.getName()); | |
445 String inclFileName = | |
446 plat.getInclFileTemplate().copyStem(anII.getName()). | |
447 preStemSuff(); | |
448 | |
449 gd.println(stemName + plat.objFileSuffix() + " " + | |
450 stemName + plat.asmFileSuffix() + ": \\"); | |
451 | |
452 printDependentOn(gd, anII.getName()); | |
453 // this gets the include file that includes all that | |
454 // this file needs (first level) since nested includes | |
455 // are skipped to avoid cycles. | |
456 printDependentOn(gd, inclFileName); | |
457 | |
458 if ( plat.haveGrandInclude() ) { | |
459 printDependentOn(gd, | |
460 plat.getGIFileTemplate().preStemSuff()); | |
461 } | |
462 | |
463 for (Iterator iiIter = anII.iterator(); iiIter.hasNext(); ) { | |
464 FileList hfile = (FileList) iiIter.next(); | |
465 if (!hfileIsInGrandInclude(hfile, anII) || | |
466 plat.writeDependenciesOnHFilesFromGI()) { | |
467 printDependentOn(gd, hfile.getName()); | |
468 } | |
469 if (platformFiles.hasListForFile(hfile.getName())) { | |
470 FileList p = | |
471 platformFiles.listForFile(hfile.getName());; | |
472 for (Iterator hiIter = p.iterator(); | |
473 hiIter.hasNext(); ) { | |
474 FileList hi2 = (FileList) hiIter.next(); | |
475 if (!hfileIsInGrandInclude(hi2, p)) { | |
476 printDependentOn(gd, hi2.getName()); | |
477 } | |
478 } | |
479 } | |
480 } | |
481 | |
482 if (plat.includeGIDependencies() | |
483 && anII.getUseGrandInclude()) { | |
484 gd.println(" $(Precompiled_Files) \\"); | |
485 } | |
486 gd.println(); | |
487 gd.println(); | |
488 } | |
489 } | |
490 | |
491 gd.close(); | |
492 } | |
493 | |
494 public void putDiffs(Database previous) throws IOException { | |
495 System.out.println("\tupdating output files\n"); | |
496 | |
497 if (!indivIncludes.compareLists(previous.indivIncludes) | |
498 || !grandInclude.compareLists(previous.grandInclude)) { | |
499 System.out.println("The order of .c or .s has changed, or " + | |
500 "the grand include file has changed."); | |
501 put(); | |
502 return; | |
503 } | |
504 | |
505 Iterator curIter = indivIncludes.iterator(); | |
506 Iterator prevIter = previous.indivIncludes.iterator(); | |
507 | |
508 try { | |
509 while (curIter.hasNext()) { | |
510 FileList newCFileList = (FileList) curIter.next(); | |
511 FileList prevCFileList = (FileList) prevIter.next(); | |
512 if (!newCFileList.compareLists(prevCFileList)) { | |
513 System.out.println("\tupdating " + newCFileList.getName()); | |
514 newCFileList.putInclFile(this); | |
515 } | |
516 } | |
517 } | |
518 catch (Exception e) { | |
519 throw new InternalError("assertion failure: cur and prev " + | |
520 "database lists changed unexpectedly."); | |
521 } | |
522 | |
523 writeGrandUnixMakefile(); | |
524 } | |
525 | |
526 private void printDependentOn(PrintWriter gd, String name) { | |
527 gd.print(" "); | |
528 gd.print(plat.dependentPrefix() + name); | |
529 } | |
530 | |
531 private boolean isOuterFile(String s) { | |
532 int len = s.length(); | |
533 String[] suffixes = plat.outerSuffixes(); | |
534 for (int i = 0; i < suffixes.length; i++) { | |
535 String suffix = suffixes[i]; | |
536 int suffLen = suffix.length(); | |
537 if ((len >= suffLen) && | |
538 (plat.fileNameStringEquality(s.substring(len - suffLen), | |
539 suffix))) { | |
540 return true; | |
541 } | |
542 } | |
543 return false; | |
544 } | |
545 | |
546 private String removeSuffixFrom(String s) { | |
547 int idx = s.lastIndexOf('.'); | |
548 if (idx <= 0) | |
549 plat.abort(); | |
550 return s.substring(0, idx); | |
551 } | |
552 } |