1 /*
2 * Copyright (c) 1998, 2014, 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 #include "precompiled.hpp"
26 #include "compiler/compilerOracle.hpp"
27 #include "memory/allocation.inline.hpp"
28 #include "memory/oopFactory.hpp"
29 #include "memory/resourceArea.hpp"
30 #include "oops/klass.hpp"
31 #include "oops/method.hpp"
32 #include "oops/oop.inline.hpp"
33 #include "oops/symbol.hpp"
34 #include "runtime/handles.inline.hpp"
35 #include "runtime/jniHandles.hpp"
36 #include "runtime/os.hpp"
37
38 class MethodMatcher : public CHeapObj<mtCompiler> {
39 public:
40 enum Mode {
41 Exact,
42 Prefix = 1,
43 Suffix = 2,
44 Substring = Prefix | Suffix,
45 Any,
46 Unknown = -1
47 };
48
49 protected:
50 Symbol* _class_name;
51 Symbol* _method_name;
52 Symbol* _signature;
53 Mode _class_mode;
54 Mode _method_mode;
55 MethodMatcher* _next;
56
57 static bool match(Symbol* candidate, Symbol* match, Mode match_mode);
58
59 Symbol* class_name() const { return _class_name; }
60 Symbol* method_name() const { return _method_name; }
61 Symbol* signature() const { return _signature; }
62
63 public:
64 MethodMatcher(Symbol* class_name, Mode class_mode,
65 Symbol* method_name, Mode method_mode,
66 Symbol* signature, MethodMatcher* next);
67 MethodMatcher(Symbol* class_name, Symbol* method_name, MethodMatcher* next);
68
69 // utility method
70 MethodMatcher* find(methodHandle method) {
71 Symbol* class_name = method->method_holder()->name();
72 Symbol* method_name = method->name();
73 for (MethodMatcher* current = this; current != NULL; current = current->_next) {
74 if (match(class_name, current->class_name(), current->_class_mode) &&
75 match(method_name, current->method_name(), current->_method_mode) &&
76 (current->signature() == NULL || current->signature() == method->signature())) {
77 return current;
78 }
79 }
80 return NULL;
81 }
82
83 bool match(methodHandle method) {
84 return find(method) != NULL;
85 }
86
87 MethodMatcher* next() const { return _next; }
88
89 static void print_symbol(Symbol* h, Mode mode) {
90 ResourceMark rm;
91
92 if (mode == Suffix || mode == Substring || mode == Any) {
93 tty->print("*");
94 }
95 if (mode != Any) {
96 h->print_symbol_on(tty);
97 }
98 if (mode == Prefix || mode == Substring) {
99 tty->print("*");
100 }
101 }
102
103 void print_base() {
104 print_symbol(class_name(), _class_mode);
105 tty->print(".");
106 print_symbol(method_name(), _method_mode);
107 if (signature() != NULL) {
108 tty->print(" ");
109 signature()->print_symbol_on(tty);
110 }
111 }
112
113 virtual void print() {
114 print_base();
115 tty->cr();
116 }
117 };
118
119 MethodMatcher::MethodMatcher(Symbol* class_name, Symbol* method_name, MethodMatcher* next) {
120 _class_name = class_name;
121 _method_name = method_name;
122 _next = next;
123 _class_mode = MethodMatcher::Exact;
124 _method_mode = MethodMatcher::Exact;
125 _signature = NULL;
126 }
127
128
129 MethodMatcher::MethodMatcher(Symbol* class_name, Mode class_mode,
130 Symbol* method_name, Mode method_mode,
131 Symbol* signature, MethodMatcher* next):
132 _class_mode(class_mode)
133 , _method_mode(method_mode)
134 , _next(next)
135 , _class_name(class_name)
136 , _method_name(method_name)
137 , _signature(signature) {
138 }
139
140 bool MethodMatcher::match(Symbol* candidate, Symbol* match, Mode match_mode) {
141 if (match_mode == Any) {
142 return true;
143 }
144
145 if (match_mode == Exact) {
146 return candidate == match;
147 }
148
149 ResourceMark rm;
150 const char * candidate_string = candidate->as_C_string();
151 const char * match_string = match->as_C_string();
152
153 switch (match_mode) {
154 case Prefix:
155 return strstr(candidate_string, match_string) == candidate_string;
156
157 case Suffix: {
158 size_t clen = strlen(candidate_string);
159 size_t mlen = strlen(match_string);
160 return clen >= mlen && strcmp(candidate_string + clen - mlen, match_string) == 0;
161 }
162
163 case Substring:
164 return strstr(candidate_string, match_string) != NULL;
165
166 default:
167 return false;
168 }
169 }
170
171 enum OptionType {
172 IntxType,
173 UintxType,
174 BoolType,
175 CcstrType,
176 DoubleType,
177 UnknownType
178 };
179
180 /* Methods to map real type names to OptionType */
181 template<typename T>
182 static OptionType get_type_for() {
183 return UnknownType;
184 };
185
186 template<> OptionType get_type_for<intx>() {
187 return IntxType;
188 }
189
190 template<> OptionType get_type_for<uintx>() {
191 return UintxType;
192 }
193
194 template<> OptionType get_type_for<bool>() {
195 return BoolType;
196 }
197
198 template<> OptionType get_type_for<ccstr>() {
199 return CcstrType;
200 }
201
202 template<> OptionType get_type_for<double>() {
203 return DoubleType;
204 }
205
206 template<typename T>
207 static const T copy_value(const T value) {
208 return value;
209 }
210
211 template<> const ccstr copy_value<ccstr>(const ccstr value) {
212 return (const ccstr)os::strdup_check_oom(value);
213 }
214
215 template <typename T>
216 class TypedMethodOptionMatcher : public MethodMatcher {
217 const char* _option;
218 OptionType _type;
219 const T _value;
220
221 public:
222 TypedMethodOptionMatcher(Symbol* class_name, Mode class_mode,
223 Symbol* method_name, Mode method_mode,
224 Symbol* signature, const char* opt,
225 const T value, MethodMatcher* next) :
226 MethodMatcher(class_name, class_mode, method_name, method_mode, signature, next),
227 _type(get_type_for<T>()), _value(copy_value<T>(value)) {
228 _option = os::strdup_check_oom(opt);
229 }
230
231 ~TypedMethodOptionMatcher() {
232 os::free((void*)_option);
233 }
234
235 TypedMethodOptionMatcher* match(methodHandle method, const char* opt) {
236 TypedMethodOptionMatcher* current = this;
237 while (current != NULL) {
238 current = (TypedMethodOptionMatcher*)current->find(method);
239 if (current == NULL) {
240 return NULL;
241 }
242 if (strcmp(current->_option, opt) == 0) {
243 return current;
244 }
245 current = current->next();
246 }
247 return NULL;
248 }
249
250 TypedMethodOptionMatcher* next() {
251 return (TypedMethodOptionMatcher*)_next;
252 }
253
254 OptionType get_type(void) {
255 return _type;
256 };
257
258 T value() { return _value; }
259
260 void print() {
261 ttyLocker ttyl;
262 print_base();
263 tty->print(" %s", _option);
264 tty->print(" <unknown option type>");
265 tty->cr();
266 }
267 };
268
269 template<>
270 void TypedMethodOptionMatcher<intx>::print() {
271 ttyLocker ttyl;
272 print_base();
273 tty->print(" intx %s", _option);
274 tty->print(" = " INTX_FORMAT, _value);
275 tty->cr();
276 };
277
278 template<>
279 void TypedMethodOptionMatcher<uintx>::print() {
280 ttyLocker ttyl;
281 print_base();
282 tty->print(" uintx %s", _option);
283 tty->print(" = " UINTX_FORMAT, _value);
284 tty->cr();
285 };
286
287 template<>
288 void TypedMethodOptionMatcher<bool>::print() {
289 ttyLocker ttyl;
290 print_base();
291 tty->print(" bool %s", _option);
292 tty->print(" = %s", _value ? "true" : "false");
293 tty->cr();
294 };
295
296 template<>
297 void TypedMethodOptionMatcher<ccstr>::print() {
298 ttyLocker ttyl;
299 print_base();
300 tty->print(" const char* %s", _option);
301 tty->print(" = '%s'", _value);
302 tty->cr();
303 };
304
305 template<>
306 void TypedMethodOptionMatcher<double>::print() {
307 ttyLocker ttyl;
308 print_base();
309 tty->print(" double %s", _option);
310 tty->print(" = %f", _value);
311 tty->cr();
312 };
313
314 // this must parallel the command_names below
315 enum OracleCommand {
316 UnknownCommand = -1,
317 OracleFirstCommand = 0,
318 BreakCommand = OracleFirstCommand,
319 PrintCommand,
320 ExcludeCommand,
321 InlineCommand,
322 DontInlineCommand,
323 CompileOnlyCommand,
324 LogCommand,
325 OptionCommand,
326 QuietCommand,
327 HelpCommand,
328 OracleCommandCount
329 };
330
331 // this must parallel the enum OracleCommand
332 static const char * command_names[] = {
333 "break",
334 "print",
335 "exclude",
336 "inline",
337 "dontinline",
338 "compileonly",
339 "log",
340 "option",
341 "quiet",
342 "help"
343 };
344
345 class MethodMatcher;
346 static MethodMatcher* lists[OracleCommandCount] = { 0, };
347
348
349 static bool check_predicate(OracleCommand command, methodHandle method) {
350 return ((lists[command] != NULL) &&
351 !method.is_null() &&
352 lists[command]->match(method));
353 }
354
355
356 static MethodMatcher* add_predicate(OracleCommand command,
357 Symbol* class_name, MethodMatcher::Mode c_mode,
358 Symbol* method_name, MethodMatcher::Mode m_mode,
359 Symbol* signature) {
360 assert(command != OptionCommand, "must use add_option_string");
361 if (command == LogCommand && !LogCompilation && lists[LogCommand] == NULL)
362 tty->print_cr("Warning: +LogCompilation must be enabled in order for individual methods to be logged.");
363 lists[command] = new MethodMatcher(class_name, c_mode, method_name, m_mode, signature, lists[command]);
364 return lists[command];
365 }
366
367 template<typename T>
368 static MethodMatcher* add_option_string(Symbol* class_name, MethodMatcher::Mode c_mode,
369 Symbol* method_name, MethodMatcher::Mode m_mode,
370 Symbol* signature,
371 const char* option,
372 T value) {
373 lists[OptionCommand] = new TypedMethodOptionMatcher<T>(class_name, c_mode, method_name, m_mode,
374 signature, option, value, lists[OptionCommand]);
375 return lists[OptionCommand];
376 }
377
378 template<typename T>
379 static bool get_option_value(methodHandle method, const char* option, T& value) {
380 TypedMethodOptionMatcher<T>* m;
381 if (lists[OptionCommand] != NULL
382 && (m = ((TypedMethodOptionMatcher<T>*)lists[OptionCommand])->match(method, option)) != NULL
383 && m->get_type() == get_type_for<T>()) {
384 value = m->value();
385 return true;
386 } else {
387 return false;
388 }
389 }
390
391 bool CompilerOracle::has_option_string(methodHandle method, const char* option) {
392 bool value = false;
393 get_option_value(method, option, value);
394 return value;
395 }
396
397 template<typename T>
398 bool CompilerOracle::has_option_value(methodHandle method, const char* option, T& value) {
399 return ::get_option_value(method, option, value);
400 }
401
402 // Explicit instantiation for all OptionTypes supported.
403 template bool CompilerOracle::has_option_value<intx>(methodHandle method, const char* option, intx& value);
404 template bool CompilerOracle::has_option_value<uintx>(methodHandle method, const char* option, uintx& value);
405 template bool CompilerOracle::has_option_value<bool>(methodHandle method, const char* option, bool& value);
406 template bool CompilerOracle::has_option_value<ccstr>(methodHandle method, const char* option, ccstr& value);
407 template bool CompilerOracle::has_option_value<double>(methodHandle method, const char* option, double& value);
408
409 bool CompilerOracle::should_exclude(methodHandle method, bool& quietly) {
410 quietly = true;
411 if (lists[ExcludeCommand] != NULL) {
412 if (lists[ExcludeCommand]->match(method)) {
413 quietly = _quiet;
414 return true;
415 }
416 }
417
418 if (lists[CompileOnlyCommand] != NULL) {
419 return !lists[CompileOnlyCommand]->match(method);
420 }
421 return false;
422 }
423
424
425 bool CompilerOracle::should_inline(methodHandle method) {
426 return (check_predicate(InlineCommand, method));
427 }
428
429
430 bool CompilerOracle::should_not_inline(methodHandle method) {
431 return (check_predicate(DontInlineCommand, method));
432 }
433
434
435 bool CompilerOracle::should_print(methodHandle method) {
436 return (check_predicate(PrintCommand, method));
437 }
438
439 bool CompilerOracle::should_print_methods() {
440 return lists[PrintCommand] != NULL;
441 }
442
443 bool CompilerOracle::should_log(methodHandle method) {
444 if (!LogCompilation) return false;
445 if (lists[LogCommand] == NULL) return true; // by default, log all
446 return (check_predicate(LogCommand, method));
447 }
448
449
450 bool CompilerOracle::should_break_at(methodHandle method) {
451 return check_predicate(BreakCommand, method);
452 }
453
454
455 static OracleCommand parse_command_name(const char * line, int* bytes_read) {
456 assert(ARRAY_SIZE(command_names) == OracleCommandCount,
457 "command_names size mismatch");
458
459 *bytes_read = 0;
460 char command[33];
461 int result = sscanf(line, "%32[a-z]%n", command, bytes_read);
462 for (uint i = 0; i < ARRAY_SIZE(command_names); i++) {
463 if (strcmp(command, command_names[i]) == 0) {
464 return (OracleCommand)i;
465 }
466 }
467 return UnknownCommand;
468 }
469
470
471 static void usage() {
472 tty->print_cr(" CompileCommand and the CompilerOracle allows simple control over");
473 tty->print_cr(" what's allowed to be compiled. The standard supported directives");
474 tty->print_cr(" are exclude and compileonly. The exclude directive stops a method");
475 tty->print_cr(" from being compiled and compileonly excludes all methods except for");
476 tty->print_cr(" the ones mentioned by compileonly directives. The basic form of");
477 tty->print_cr(" all commands is a command name followed by the name of the method");
478 tty->print_cr(" in one of two forms: the standard class file format as in");
479 tty->print_cr(" class/name.methodName or the PrintCompilation format");
480 tty->print_cr(" class.name::methodName. The method name can optionally be followed");
481 tty->print_cr(" by a space then the signature of the method in the class file");
482 tty->print_cr(" format. Otherwise the directive applies to all methods with the");
483 tty->print_cr(" same name and class regardless of signature. Leading and trailing");
484 tty->print_cr(" *'s in the class and/or method name allows a small amount of");
485 tty->print_cr(" wildcarding. ");
486 tty->cr();
487 tty->print_cr(" Examples:");
488 tty->cr();
489 tty->print_cr(" exclude java/lang/StringBuffer.append");
490 tty->print_cr(" compileonly java/lang/StringBuffer.toString ()Ljava/lang/String;");
491 tty->print_cr(" exclude java/lang/String*.*");
492 tty->print_cr(" exclude *.toString");
493 }
494
495
496 // The characters allowed in a class or method name. All characters > 0x7f
497 // are allowed in order to handle obfuscated class files (e.g. Volano)
498 #define RANGEBASE "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789$_<>" \
499 "\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f" \
500 "\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f" \
501 "\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf" \
502 "\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf" \
503 "\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf" \
504 "\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf" \
505 "\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef" \
506 "\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff"
507
508 #define RANGE0 "[*" RANGEBASE "]"
509 #define RANGESLASH "[*" RANGEBASE "/]"
510
511 static MethodMatcher::Mode check_mode(char name[], const char*& error_msg) {
512 int match = MethodMatcher::Exact;
513 while (name[0] == '*') {
514 match |= MethodMatcher::Suffix;
515 strcpy(name, name + 1);
516 }
517
518 if (strcmp(name, "*") == 0) return MethodMatcher::Any;
519
520 size_t len = strlen(name);
521 while (len > 0 && name[len - 1] == '*') {
522 match |= MethodMatcher::Prefix;
523 name[--len] = '\0';
524 }
525
526 if (strstr(name, "*") != NULL) {
527 error_msg = " Embedded * not allowed";
528 return MethodMatcher::Unknown;
529 }
530 return (MethodMatcher::Mode)match;
531 }
532
533 static bool scan_line(const char * line,
534 char class_name[], MethodMatcher::Mode* c_mode,
535 char method_name[], MethodMatcher::Mode* m_mode,
536 int* bytes_read, const char*& error_msg) {
537 *bytes_read = 0;
538 error_msg = NULL;
539 if (2 == sscanf(line, "%*[ \t]%255" RANGESLASH "%*[ ]" "%255" RANGE0 "%n", class_name, method_name, bytes_read)) {
540 *c_mode = check_mode(class_name, error_msg);
541 *m_mode = check_mode(method_name, error_msg);
542 return *c_mode != MethodMatcher::Unknown && *m_mode != MethodMatcher::Unknown;
543 }
544 return false;
545 }
546
547
548
549 // Scan next flag and value in line, return MethodMatcher object on success, NULL on failure.
550 // On failure, error_msg contains description for the first error.
551 // For future extensions: set error_msg on first error.
552 static MethodMatcher* scan_flag_and_value(const char* type, const char* line, int& total_bytes_read,
553 Symbol* c_name, MethodMatcher::Mode c_match,
554 Symbol* m_name, MethodMatcher::Mode m_match,
555 Symbol* signature,
556 char* errorbuf, const int buf_size) {
557 total_bytes_read = 0;
558 int bytes_read = 0;
559 char flag[256];
560
561 // Read flag name.
562 if (sscanf(line, "%*[ \t]%255[a-zA-Z0-9]%n", flag, &bytes_read) == 1) {
563 line += bytes_read;
564 total_bytes_read += bytes_read;
565
566 // Read value.
567 if (strcmp(type, "intx") == 0) {
568 intx value;
569 if (sscanf(line, "%*[ \t]" INTX_FORMAT "%n", &value, &bytes_read) == 1) {
570 total_bytes_read += bytes_read;
571 return add_option_string(c_name, c_match, m_name, m_match, signature, flag, value);
572 } else {
573 jio_snprintf(errorbuf, buf_size, " Value cannot be read for flag %s of type %s ", flag, type);
574 }
575 } else if (strcmp(type, "uintx") == 0) {
576 uintx value;
577 if (sscanf(line, "%*[ \t]" UINTX_FORMAT "%n", &value, &bytes_read) == 1) {
578 total_bytes_read += bytes_read;
579 return add_option_string(c_name, c_match, m_name, m_match, signature, flag, value);
580 } else {
581 jio_snprintf(errorbuf, buf_size, " Value cannot be read for flag %s of type %s", flag, type);
582 }
583 } else if (strcmp(type, "ccstr") == 0) {
584 ResourceMark rm;
585 char* value = NEW_RESOURCE_ARRAY(char, strlen(line) + 1);
586 if (sscanf(line, "%*[ \t]%255[_a-zA-Z0-9]%n", value, &bytes_read) == 1) {
587 total_bytes_read += bytes_read;
588 return add_option_string(c_name, c_match, m_name, m_match, signature, flag, (ccstr)value);
589 } else {
590 jio_snprintf(errorbuf, buf_size, " Value cannot be read for flag %s of type %s", flag, type);
591 }
592 } else if (strcmp(type, "ccstrlist") == 0) {
593 // Accumulates several strings into one. The internal type is ccstr.
594 ResourceMark rm;
595 char* value = NEW_RESOURCE_ARRAY(char, strlen(line) + 1);
596 char* next_value = value;
597 if (sscanf(line, "%*[ \t]%255[_a-zA-Z0-9]%n", next_value, &bytes_read) == 1) {
598 total_bytes_read += bytes_read;
599 line += bytes_read;
600 next_value += bytes_read;
601 char* end_value = next_value-1;
602 while (sscanf(line, "%*[ \t]%255[_a-zA-Z0-9]%n", next_value, &bytes_read) == 1) {
603 total_bytes_read += bytes_read;
604 line += bytes_read;
605 *end_value = ' '; // override '\0'
606 next_value += bytes_read;
607 end_value = next_value-1;
608 }
609 return add_option_string(c_name, c_match, m_name, m_match, signature, flag, (ccstr)value);
610 } else {
611 jio_snprintf(errorbuf, buf_size, " Value cannot be read for flag %s of type %s", flag, type);
612 }
613 } else if (strcmp(type, "bool") == 0) {
614 char value[256];
615 if (sscanf(line, "%*[ \t]%255[a-zA-Z]%n", value, &bytes_read) == 1) {
616 if (strcmp(value, "true") == 0) {
617 total_bytes_read += bytes_read;
618 return add_option_string(c_name, c_match, m_name, m_match, signature, flag, true);
619 } else if (strcmp(value, "false") == 0) {
620 total_bytes_read += bytes_read;
621 return add_option_string(c_name, c_match, m_name, m_match, signature, flag, false);
622 } else {
623 jio_snprintf(errorbuf, buf_size, " Value cannot be read for flag %s of type %s", flag, type);
624 }
625 } else {
626 jio_snprintf(errorbuf, sizeof(errorbuf), " Value cannot be read for flag %s of type %s", flag, type);
627 }
628 } else if (strcmp(type, "double") == 0) {
629 char buffer[2][256];
630 // Decimal separator '.' has been replaced with ' ' or '/' earlier,
631 // so read integer and fraction part of double value separately.
632 if (sscanf(line, "%*[ \t]%255[0-9]%*[ /\t]%255[0-9]%n", buffer[0], buffer[1], &bytes_read) == 2) {
633 char value[512] = "";
634 strncat(value, buffer[0], 255);
635 strcat(value, ".");
636 strncat(value, buffer[1], 255);
637 total_bytes_read += bytes_read;
638 return add_option_string(c_name, c_match, m_name, m_match, signature, flag, atof(value));
639 } else {
640 jio_snprintf(errorbuf, buf_size, " Value cannot be read for flag %s of type %s", flag, type);
641 }
642 } else {
643 jio_snprintf(errorbuf, sizeof(errorbuf), " Type %s not supported ", type);
644 }
645 } else {
646 jio_snprintf(errorbuf, sizeof(errorbuf), " Flag name for type %s should be alphanumeric ", type);
647 }
648 return NULL;
649 }
650
651 void CompilerOracle::parse_from_line(char* line) {
652 if (line[0] == '\0') return;
653 if (line[0] == '#') return;
654
655 bool have_colon = (strstr(line, "::") != NULL);
656 for (char* lp = line; *lp != '\0'; lp++) {
657 // Allow '.' to separate the class name from the method name.
658 // This is the preferred spelling of methods:
659 // exclude java/lang/String.indexOf(I)I
660 // Allow ',' for spaces (eases command line quoting).
661 // exclude,java/lang/String.indexOf
662 // For backward compatibility, allow space as separator also.
663 // exclude java/lang/String indexOf
664 // exclude,java/lang/String,indexOf
665 // For easy cut-and-paste of method names, allow VM output format
666 // as produced by Method::print_short_name:
667 // exclude java.lang.String::indexOf
668 // For simple implementation convenience here, convert them all to space.
669 if (have_colon) {
670 if (*lp == '.') *lp = '/'; // dots build the package prefix
671 if (*lp == ':') *lp = ' ';
672 }
673 if (*lp == ',' || *lp == '.') *lp = ' ';
674 }
675
676 char* original_line = line;
677 int bytes_read;
678 OracleCommand command = parse_command_name(line, &bytes_read);
679 line += bytes_read;
680 ResourceMark rm;
681
682 if (command == UnknownCommand) {
683 ttyLocker ttyl;
684 tty->print_cr("CompilerOracle: unrecognized line");
685 tty->print_cr(" \"%s\"", original_line);
686 return;
687 }
688
689 if (command == QuietCommand) {
690 _quiet = true;
691 return;
692 }
693
694 if (command == HelpCommand) {
695 usage();
696 return;
697 }
698
699 MethodMatcher::Mode c_match = MethodMatcher::Exact;
700 MethodMatcher::Mode m_match = MethodMatcher::Exact;
701 char class_name[256];
702 char method_name[256];
703 char sig[1024];
704 char errorbuf[1024];
705 const char* error_msg = NULL; // description of first error that appears
706 MethodMatcher* match = NULL;
707
708 if (scan_line(line, class_name, &c_match, method_name, &m_match, &bytes_read, error_msg)) {
709 EXCEPTION_MARK;
710 Symbol* c_name = SymbolTable::new_symbol(class_name, CHECK);
711 Symbol* m_name = SymbolTable::new_symbol(method_name, CHECK);
712 Symbol* signature = NULL;
713
714 line += bytes_read;
715 // there might be a signature following the method.
716 // signatures always begin with ( so match that by hand
717 if (1 == sscanf(line, "%*[ \t](%254[[);/" RANGEBASE "]%n", sig + 1, &bytes_read)) {
718 sig[0] = '(';
719 line += bytes_read;
720 signature = SymbolTable::new_symbol(sig, CHECK);
721 }
722
723 if (command == OptionCommand) {
724 // Look for trailing options.
725 //
726 // Two types of trailing options are
727 // supported:
728 //
729 // (1) CompileCommand=option,Klass::method,flag
730 // (2) CompileCommand=option,Klass::method,type,flag,value
731 //
732 // Type (1) is used to enable a boolean flag for a method.
733 //
734 // Type (2) is used to support options with a value. Values can have the
735 // the following types: intx, uintx, bool, ccstr, ccstrlist, and double.
736 //
737 // For future extensions: extend scan_flag_and_value()
738 char option[256]; // stores flag for Type (1) and type of Type (2)
739 while (sscanf(line, "%*[ \t]%255[a-zA-Z0-9]%n", option, &bytes_read) == 1) {
740 if (match != NULL && !_quiet) {
741 // Print out the last match added
742 ttyLocker ttyl;
743 tty->print("CompilerOracle: %s ", command_names[command]);
744 match->print();
745 }
746 line += bytes_read;
747
748 if (strcmp(option, "intx") == 0
749 || strcmp(option, "uintx") == 0
750 || strcmp(option, "bool") == 0
751 || strcmp(option, "ccstr") == 0
752 || strcmp(option, "ccstrlist") == 0
753 || strcmp(option, "double") == 0
754 ) {
755
756 // Type (2) option: parse flag name and value.
757 match = scan_flag_and_value(option, line, bytes_read,
758 c_name, c_match, m_name, m_match, signature,
759 errorbuf, sizeof(errorbuf));
760 if (match == NULL) {
761 error_msg = errorbuf;
762 break;
763 }
764 line += bytes_read;
765 } else {
766 // Type (1) option
767 match = add_option_string(c_name, c_match, m_name, m_match, signature, option, true);
768 }
769 } // while(
770 } else {
771 match = add_predicate(command, c_name, c_match, m_name, m_match, signature);
772 }
773 }
774
775 ttyLocker ttyl;
776 if (error_msg != NULL) {
777 // an error has happened
778 tty->print_cr("CompilerOracle: unrecognized line");
779 tty->print_cr(" \"%s\"", original_line);
780 if (error_msg != NULL) {
781 tty->print_cr("%s", error_msg);
782 }
783 } else {
784 // check for remaining characters
785 bytes_read = 0;
786 sscanf(line, "%*[ \t]%n", &bytes_read);
787 if (line[bytes_read] != '\0') {
788 tty->print_cr("CompilerOracle: unrecognized line");
789 tty->print_cr(" \"%s\"", original_line);
790 tty->print_cr(" Unrecognized text %s after command ", line);
791 } else if (match != NULL && !_quiet) {
792 tty->print("CompilerOracle: %s ", command_names[command]);
793 match->print();
794 }
795 }
796 }
797
798 static const char* default_cc_file = ".hotspot_compiler";
799
800 static const char* cc_file() {
801 #ifdef ASSERT
802 if (CompileCommandFile == NULL)
803 return default_cc_file;
804 #endif
805 return CompileCommandFile;
806 }
807
808 bool CompilerOracle::has_command_file() {
809 return cc_file() != NULL;
810 }
811
812 bool CompilerOracle::_quiet = false;
813
814 void CompilerOracle::parse_from_file() {
815 assert(has_command_file(), "command file must be specified");
816 FILE* stream = fopen(cc_file(), "rt");
817 if (stream == NULL) return;
818
819 char token[1024];
820 int pos = 0;
821 int c = getc(stream);
822 while(c != EOF && pos < (int)(sizeof(token)-1)) {
823 if (c == '\n') {
824 token[pos++] = '\0';
825 parse_from_line(token);
826 pos = 0;
827 } else {
828 token[pos++] = c;
829 }
830 c = getc(stream);
831 }
832 token[pos++] = '\0';
833 parse_from_line(token);
834
835 fclose(stream);
836 }
837
838 void CompilerOracle::parse_from_string(const char* str, void (*parse_line)(char*)) {
839 char token[1024];
840 int pos = 0;
841 const char* sp = str;
842 int c = *sp++;
843 while (c != '\0' && pos < (int)(sizeof(token)-1)) {
844 if (c == '\n') {
845 token[pos++] = '\0';
846 parse_line(token);
847 pos = 0;
848 } else {
849 token[pos++] = c;
850 }
851 c = *sp++;
852 }
853 token[pos++] = '\0';
854 parse_line(token);
855 }
856
857 void CompilerOracle::append_comment_to_file(const char* message) {
858 assert(has_command_file(), "command file must be specified");
859 fileStream stream(fopen(cc_file(), "at"));
860 stream.print("# ");
861 for (int index = 0; message[index] != '\0'; index++) {
862 stream.put(message[index]);
863 if (message[index] == '\n') stream.print("# ");
864 }
865 stream.cr();
866 }
867
868 void CompilerOracle::append_exclude_to_file(methodHandle method) {
869 assert(has_command_file(), "command file must be specified");
870 fileStream stream(fopen(cc_file(), "at"));
871 stream.print("exclude ");
872 method->method_holder()->name()->print_symbol_on(&stream);
873 stream.print(".");
874 method->name()->print_symbol_on(&stream);
875 method->signature()->print_symbol_on(&stream);
876 stream.cr();
877 stream.cr();
878 }
879
880
881 void compilerOracle_init() {
882 CompilerOracle::parse_from_string(CompileCommand, CompilerOracle::parse_from_line);
883 CompilerOracle::parse_from_string(CompileOnly, CompilerOracle::parse_compile_only);
884 if (CompilerOracle::has_command_file()) {
885 CompilerOracle::parse_from_file();
886 } else {
887 struct stat buf;
888 if (os::stat(default_cc_file, &buf) == 0) {
889 warning("%s file is present but has been ignored. "
890 "Run with -XX:CompileCommandFile=%s to load the file.",
891 default_cc_file, default_cc_file);
892 }
893 }
894 if (lists[PrintCommand] != NULL) {
895 if (PrintAssembly) {
896 warning("CompileCommand and/or %s file contains 'print' commands, but PrintAssembly is also enabled", default_cc_file);
897 } else if (FLAG_IS_DEFAULT(DebugNonSafepoints)) {
898 warning("printing of assembly code is enabled; turning on DebugNonSafepoints to gain additional output");
899 DebugNonSafepoints = true;
900 }
901 }
902 }
903
904
905 void CompilerOracle::parse_compile_only(char * line) {
906 int i;
907 char name[1024];
908 const char* className = NULL;
909 const char* methodName = NULL;
910
911 bool have_colon = (strstr(line, "::") != NULL);
912 char method_sep = have_colon ? ':' : '.';
913
914 if (Verbose) {
915 tty->print_cr("%s", line);
916 }
917
918 ResourceMark rm;
919 while (*line != '\0') {
920 MethodMatcher::Mode c_match = MethodMatcher::Exact;
921 MethodMatcher::Mode m_match = MethodMatcher::Exact;
922
923 for (i = 0;
924 i < 1024 && *line != '\0' && *line != method_sep && *line != ',' && !isspace(*line);
925 line++, i++) {
926 name[i] = *line;
927 if (name[i] == '.') name[i] = '/'; // package prefix uses '/'
928 }
929
930 if (i > 0) {
931 char* newName = NEW_RESOURCE_ARRAY( char, i + 1);
932 if (newName == NULL)
933 return;
934 strncpy(newName, name, i);
935 newName[i] = '\0';
936
937 if (className == NULL) {
938 className = newName;
939 c_match = MethodMatcher::Prefix;
940 } else {
941 methodName = newName;
942 }
943 }
944
945 if (*line == method_sep) {
946 if (className == NULL) {
947 className = "";
948 c_match = MethodMatcher::Any;
949 } else {
950 // foo/bar.blah is an exact match on foo/bar, bar.blah is a suffix match on bar
951 if (strchr(className, '/') != NULL) {
952 c_match = MethodMatcher::Exact;
953 } else {
954 c_match = MethodMatcher::Suffix;
955 }
956 }
957 } else {
958 // got foo or foo/bar
959 if (className == NULL) {
960 ShouldNotReachHere();
961 } else {
962 // got foo or foo/bar
963 if (strchr(className, '/') != NULL) {
964 c_match = MethodMatcher::Prefix;
965 } else if (className[0] == '\0') {
966 c_match = MethodMatcher::Any;
967 } else {
968 c_match = MethodMatcher::Substring;
969 }
970 }
971 }
972
973 // each directive is terminated by , or NUL or . followed by NUL
974 if (*line == ',' || *line == '\0' || (line[0] == '.' && line[1] == '\0')) {
975 if (methodName == NULL) {
976 methodName = "";
977 if (*line != method_sep) {
978 m_match = MethodMatcher::Any;
979 }
980 }
981
982 EXCEPTION_MARK;
983 Symbol* c_name = SymbolTable::new_symbol(className, CHECK);
984 Symbol* m_name = SymbolTable::new_symbol(methodName, CHECK);
985 Symbol* signature = NULL;
986
987 add_predicate(CompileOnlyCommand, c_name, c_match, m_name, m_match, signature);
988 if (PrintVMOptions) {
989 tty->print("CompileOnly: compileonly ");
990 lists[CompileOnlyCommand]->print();
991 }
992
993 className = NULL;
994 methodName = NULL;
995 }
996
997 line = *line == '\0' ? line : line + 1;
998 }
999 }