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 signature()->print_symbol_on(tty);
109 }
110 }
111
112 virtual void print() {
113 print_base();
114 tty->cr();
115 }
116 };
117
118 MethodMatcher::MethodMatcher(Symbol* class_name, Symbol* method_name, MethodMatcher* next) {
119 _class_name = class_name;
120 _method_name = method_name;
121 _next = next;
122 _class_mode = MethodMatcher::Exact;
123 _method_mode = MethodMatcher::Exact;
124 _signature = NULL;
125 }
126
127
128 MethodMatcher::MethodMatcher(Symbol* class_name, Mode class_mode,
129 Symbol* method_name, Mode method_mode,
130 Symbol* signature, MethodMatcher* next):
131 _class_mode(class_mode)
132 , _method_mode(method_mode)
133 , _next(next)
134 , _class_name(class_name)
135 , _method_name(method_name)
136 , _signature(signature) {
137 }
138
139 bool MethodMatcher::match(Symbol* candidate, Symbol* match, Mode match_mode) {
140 if (match_mode == Any) {
141 return true;
142 }
143
144 if (match_mode == Exact) {
145 return candidate == match;
146 }
147
148 ResourceMark rm;
149 const char * candidate_string = candidate->as_C_string();
150 const char * match_string = match->as_C_string();
151
152 switch (match_mode) {
153 case Prefix:
154 return strstr(candidate_string, match_string) == candidate_string;
155
156 case Suffix: {
157 size_t clen = strlen(candidate_string);
158 size_t mlen = strlen(match_string);
159 return clen >= mlen && strcmp(candidate_string + clen - mlen, match_string) == 0;
160 }
161
162 case Substring:
163 return strstr(candidate_string, match_string) != NULL;
164
165 default:
166 return false;
167 }
168 }
169
170 enum OptionType {
171 IntxType,
172 UintxType,
173 BoolType,
174 CcstrType,
175 DoubleType,
176 UnknownType
177 };
178
179 /* Methods to map real type names to OptionType */
180 template<typename T>
181 static OptionType get_type_for() {
182 return UnknownType;
183 };
184
185 template<> OptionType get_type_for<intx>() {
186 return IntxType;
187 }
188
189 template<> OptionType get_type_for<uintx>() {
190 return UintxType;
191 }
192
193 template<> OptionType get_type_for<bool>() {
194 return BoolType;
195 }
196
197 template<> OptionType get_type_for<ccstr>() {
198 return CcstrType;
199 }
200
201 template<> OptionType get_type_for<double>() {
202 return DoubleType;
203 }
204
205 template<typename T>
206 static const T copy_value(const T value) {
207 return value;
208 }
209
210 template<> const ccstr copy_value<ccstr>(const ccstr value) {
211 return (const ccstr)os::strdup_check_oom(value);
212 }
213
214 template <typename T>
215 class TypedMethodOptionMatcher : public MethodMatcher {
216 const char* _option;
217 OptionType _type;
218 const T _value;
219
220 public:
221 TypedMethodOptionMatcher(Symbol* class_name, Mode class_mode,
222 Symbol* method_name, Mode method_mode,
223 Symbol* signature, const char* opt,
224 const T value, MethodMatcher* next) :
225 MethodMatcher(class_name, class_mode, method_name, method_mode, signature, next),
226 _type(get_type_for<T>()), _value(copy_value<T>(value)) {
227 _option = os::strdup_check_oom(opt);
228 }
229
230 ~TypedMethodOptionMatcher() {
231 os::free((void*)_option);
232 }
233
234 TypedMethodOptionMatcher* match(methodHandle method, const char* opt) {
235 TypedMethodOptionMatcher* current = this;
236 while (current != NULL) {
237 current = (TypedMethodOptionMatcher*)current->find(method);
238 if (current == NULL) {
239 return NULL;
240 }
241 if (strcmp(current->_option, opt) == 0) {
242 return current;
243 }
244 current = current->next();
245 }
246 return NULL;
247 }
248
249 TypedMethodOptionMatcher* next() {
250 return (TypedMethodOptionMatcher*)_next;
251 }
252
253 OptionType get_type(void) {
254 return _type;
255 };
256
257 T value() { return _value; }
258
259 void print() {
260 ttyLocker ttyl;
261 print_base();
262 tty->print(" %s", _option);
263 tty->print(" <unknown option type>");
264 tty->cr();
265 }
266 };
267
268 template<>
269 void TypedMethodOptionMatcher<intx>::print() {
270 ttyLocker ttyl;
271 print_base();
272 tty->print(" intx %s", _option);
273 tty->print(" = " INTX_FORMAT, _value);
274 tty->cr();
275 };
276
277 template<>
278 void TypedMethodOptionMatcher<uintx>::print() {
279 ttyLocker ttyl;
280 print_base();
281 tty->print(" uintx %s", _option);
282 tty->print(" = " UINTX_FORMAT, _value);
283 tty->cr();
284 };
285
286 template<>
287 void TypedMethodOptionMatcher<bool>::print() {
288 ttyLocker ttyl;
289 print_base();
290 tty->print(" bool %s", _option);
291 tty->print(" = %s", _value ? "true" : "false");
292 tty->cr();
293 };
294
295 template<>
296 void TypedMethodOptionMatcher<ccstr>::print() {
297 ttyLocker ttyl;
298 print_base();
299 tty->print(" const char* %s", _option);
300 tty->print(" = '%s'", _value);
301 tty->cr();
302 };
303
304 template<>
305 void TypedMethodOptionMatcher<double>::print() {
306 ttyLocker ttyl;
307 print_base();
308 tty->print(" double %s", _option);
309 tty->print(" = %f", _value);
310 tty->cr();
311 };
312
313 // this must parallel the command_names below
314 enum OracleCommand {
315 UnknownCommand = -1,
316 OracleFirstCommand = 0,
317 BreakCommand = OracleFirstCommand,
318 PrintCommand,
319 ExcludeCommand,
320 InlineCommand,
321 DontInlineCommand,
322 CompileOnlyCommand,
323 LogCommand,
324 OptionCommand,
325 QuietCommand,
326 HelpCommand,
327 OracleCommandCount
328 };
329
330 // this must parallel the enum OracleCommand
331 static const char * command_names[] = {
332 "break",
333 "print",
334 "exclude",
335 "inline",
336 "dontinline",
337 "compileonly",
338 "log",
339 "option",
340 "quiet",
341 "help"
342 };
343
344 class MethodMatcher;
345 static MethodMatcher* lists[OracleCommandCount] = { 0, };
346
347
348 static bool check_predicate(OracleCommand command, methodHandle method) {
349 return ((lists[command] != NULL) &&
350 !method.is_null() &&
351 lists[command]->match(method));
352 }
353
354
355 static MethodMatcher* add_predicate(OracleCommand command,
356 Symbol* class_name, MethodMatcher::Mode c_mode,
357 Symbol* method_name, MethodMatcher::Mode m_mode,
358 Symbol* signature) {
359 assert(command != OptionCommand, "must use add_option_string");
360 if (command == LogCommand && !LogCompilation && lists[LogCommand] == NULL)
361 tty->print_cr("Warning: +LogCompilation must be enabled in order for individual methods to be logged.");
362 lists[command] = new MethodMatcher(class_name, c_mode, method_name, m_mode, signature, lists[command]);
363 return lists[command];
364 }
365
366 template<typename T>
367 static MethodMatcher* add_option_string(Symbol* class_name, MethodMatcher::Mode c_mode,
368 Symbol* method_name, MethodMatcher::Mode m_mode,
369 Symbol* signature,
370 const char* option,
371 T value) {
372 lists[OptionCommand] = new TypedMethodOptionMatcher<T>(class_name, c_mode, method_name, m_mode,
373 signature, option, value, lists[OptionCommand]);
374 return lists[OptionCommand];
375 }
376
377 template<typename T>
378 static bool get_option_value(methodHandle method, const char* option, T& value) {
379 TypedMethodOptionMatcher<T>* m;
380 if (lists[OptionCommand] != NULL
381 && (m = ((TypedMethodOptionMatcher<T>*)lists[OptionCommand])->match(method, option)) != NULL
382 && m->get_type() == get_type_for<T>()) {
383 value = m->value();
384 return true;
385 } else {
386 return false;
387 }
388 }
389
390 bool CompilerOracle::has_option_string(methodHandle method, const char* option) {
391 bool value = false;
392 get_option_value(method, option, value);
393 return value;
394 }
395
396 template<typename T>
397 bool CompilerOracle::has_option_value(methodHandle method, const char* option, T& value) {
398 return ::get_option_value(method, option, value);
399 }
400
401 // Explicit instantiation for all OptionTypes supported.
402 template bool CompilerOracle::has_option_value<intx>(methodHandle method, const char* option, intx& value);
403 template bool CompilerOracle::has_option_value<uintx>(methodHandle method, const char* option, uintx& value);
404 template bool CompilerOracle::has_option_value<bool>(methodHandle method, const char* option, bool& value);
405 template bool CompilerOracle::has_option_value<ccstr>(methodHandle method, const char* option, ccstr& value);
406 template bool CompilerOracle::has_option_value<double>(methodHandle method, const char* option, double& value);
407
408 bool CompilerOracle::should_exclude(methodHandle method, bool& quietly) {
409 quietly = true;
410 if (lists[ExcludeCommand] != NULL) {
411 if (lists[ExcludeCommand]->match(method)) {
412 quietly = _quiet;
413 return true;
414 }
415 }
416
417 if (lists[CompileOnlyCommand] != NULL) {
418 return !lists[CompileOnlyCommand]->match(method);
419 }
420 return false;
421 }
422
423
424 bool CompilerOracle::should_inline(methodHandle method) {
425 return (check_predicate(InlineCommand, method));
426 }
427
428
429 bool CompilerOracle::should_not_inline(methodHandle method) {
430 return (check_predicate(DontInlineCommand, method));
431 }
432
433
434 bool CompilerOracle::should_print(methodHandle method) {
435 return (check_predicate(PrintCommand, method));
436 }
437
438 bool CompilerOracle::should_print_methods() {
439 return lists[PrintCommand] != NULL;
440 }
441
442 bool CompilerOracle::should_log(methodHandle method) {
443 if (!LogCompilation) return false;
444 if (lists[LogCommand] == NULL) return true; // by default, log all
445 return (check_predicate(LogCommand, method));
446 }
447
448
449 bool CompilerOracle::should_break_at(methodHandle method) {
450 return check_predicate(BreakCommand, method);
451 }
452
453
454 static OracleCommand parse_command_name(const char * line, int* bytes_read) {
455 assert(ARRAY_SIZE(command_names) == OracleCommandCount,
456 "command_names size mismatch");
457
458 *bytes_read = 0;
459 char command[33];
460 int result = sscanf(line, "%32[a-z]%n", command, bytes_read);
461 for (uint i = 0; i < ARRAY_SIZE(command_names); i++) {
462 if (strcmp(command, command_names[i]) == 0) {
463 return (OracleCommand)i;
464 }
465 }
466 return UnknownCommand;
467 }
468
469
470 static void usage() {
471 tty->print_cr(" CompileCommand and the CompilerOracle allows simple control over");
472 tty->print_cr(" what's allowed to be compiled. The standard supported directives");
473 tty->print_cr(" are exclude and compileonly. The exclude directive stops a method");
474 tty->print_cr(" from being compiled and compileonly excludes all methods except for");
475 tty->print_cr(" the ones mentioned by compileonly directives. The basic form of");
476 tty->print_cr(" all commands is a command name followed by the name of the method");
477 tty->print_cr(" in one of two forms: the standard class file format as in");
478 tty->print_cr(" class/name.methodName or the PrintCompilation format");
479 tty->print_cr(" class.name::methodName. The method name can optionally be followed");
480 tty->print_cr(" by a space then the signature of the method in the class file");
481 tty->print_cr(" format. Otherwise the directive applies to all methods with the");
482 tty->print_cr(" same name and class regardless of signature. Leading and trailing");
483 tty->print_cr(" *'s in the class and/or method name allows a small amount of");
484 tty->print_cr(" wildcarding. ");
485 tty->cr();
486 tty->print_cr(" Examples:");
487 tty->cr();
488 tty->print_cr(" exclude java/lang/StringBuffer.append");
489 tty->print_cr(" compileonly java/lang/StringBuffer.toString ()Ljava/lang/String;");
490 tty->print_cr(" exclude java/lang/String*.*");
491 tty->print_cr(" exclude *.toString");
492 }
493
494 // The characters allowed is based on the JVM specification.
495 // Some tokens disallowed in the JVMS have some meaning
496 // when parsing so we need to include them here.
497 // The parser do not enforce all rules of the JVMS - a successful parse
498 // does not mean that it is an allowed name. Illegal names will simply
499 // be ignored since they never can match a class or method.
500 //
501 // '\0' and 0xf0-0xff are disallowed in constant string values
502 // 0x20 ' ', 0x09 '\t' are used in the matching
503 // 0x5b '[' and 0x5d ']' can not be used by the matcher
504 // 0x28 '(' and 0x29 ')' are used for the signature
505 // 0x2e '.' is always replaced before the matching
506 // 0x2f '/' is only used in the class name (package separator)
507
508 #define RANGEBASE "\x1\x2\x3\x4\x5\x6\x7\x8\xa\xb\xc\xd\xe\xf" \
509 "\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f" \
510 "\x21\x22\x23\x24\x25\x26\x27\x2a\x2b\x2c\x2d" \
511 "\x30\x31\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b\x3c\x3d\x3e\x3f" \
512 "\x40\x41\x42\x43\x44\x45\x46\x47\x48\x49\x4a\x4b\x4c\x4d\x4e\x4f" \
513 "\x50\x51\x52\x53\x54\x55\x56\x57\x58\x59\x5a\x5c\x5e\x5f" \
514 "\x60\x61\x62\x63\x64\x65\x66\x67\x68\x69\x6a\x6b\x6c\x6d\x6e\x6f" \
515 "\x70\x71\x72\x73\x74\x75\x76\x77\x78\x79\x7a\x7b\x7c\x7d\x7e\x7f" \
516 "\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f" \
517 "\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f" \
518 "\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf" \
519 "\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf" \
520 "\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf" \
521 "\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf" \
522 "\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef"
523
524 #define RANGE0 "[*" RANGEBASE "]"
525 #define RANGESLASH "[*" RANGEBASE "/]"
526
527 static MethodMatcher::Mode check_mode(char name[], const char*& error_msg) {
528 int match = MethodMatcher::Exact;
529 while (name[0] == '*') {
530 match |= MethodMatcher::Suffix;
531 strcpy(name, name + 1);
532 }
533
534 if (strcmp(name, "*") == 0) return MethodMatcher::Any;
535
536 size_t len = strlen(name);
537 while (len > 0 && name[len - 1] == '*') {
538 match |= MethodMatcher::Prefix;
539 name[--len] = '\0';
540 }
541
542 if (strstr(name, "*") != NULL) {
543 error_msg = " Embedded * not allowed";
544 return MethodMatcher::Unknown;
545 }
546 return (MethodMatcher::Mode)match;
547 }
548
549 static bool scan_line(const char * line,
550 char class_name[], MethodMatcher::Mode* c_mode,
551 char method_name[], MethodMatcher::Mode* m_mode,
552 int* bytes_read, const char*& error_msg) {
553 *bytes_read = 0;
554 error_msg = NULL;
555 if (2 == sscanf(line, "%*[ \t]%255" RANGESLASH "%*[ ]" "%255" RANGE0 "%n", class_name, method_name, bytes_read)) {
556 *c_mode = check_mode(class_name, error_msg);
557 *m_mode = check_mode(method_name, error_msg);
558 return *c_mode != MethodMatcher::Unknown && *m_mode != MethodMatcher::Unknown;
559 }
560 return false;
561 }
562
563
564
565 // Scan next flag and value in line, return MethodMatcher object on success, NULL on failure.
566 // On failure, error_msg contains description for the first error.
567 // For future extensions: set error_msg on first error.
568 static MethodMatcher* scan_flag_and_value(const char* type, const char* line, int& total_bytes_read,
569 Symbol* c_name, MethodMatcher::Mode c_match,
570 Symbol* m_name, MethodMatcher::Mode m_match,
571 Symbol* signature,
572 char* errorbuf, const int buf_size) {
573 total_bytes_read = 0;
574 int bytes_read = 0;
575 char flag[256];
576
577 // Read flag name.
578 if (sscanf(line, "%*[ \t]%255[a-zA-Z0-9]%n", flag, &bytes_read) == 1) {
579 line += bytes_read;
580 total_bytes_read += bytes_read;
581
582 // Read value.
583 if (strcmp(type, "intx") == 0) {
584 intx value;
585 if (sscanf(line, "%*[ \t]" INTX_FORMAT "%n", &value, &bytes_read) == 1) {
586 total_bytes_read += bytes_read;
587 return add_option_string(c_name, c_match, m_name, m_match, signature, flag, value);
588 } else {
589 jio_snprintf(errorbuf, buf_size, " Value cannot be read for flag %s of type %s ", flag, type);
590 }
591 } else if (strcmp(type, "uintx") == 0) {
592 uintx value;
593 if (sscanf(line, "%*[ \t]" UINTX_FORMAT "%n", &value, &bytes_read) == 1) {
594 total_bytes_read += bytes_read;
595 return add_option_string(c_name, c_match, m_name, m_match, signature, flag, value);
596 } else {
597 jio_snprintf(errorbuf, buf_size, " Value cannot be read for flag %s of type %s", flag, type);
598 }
599 } else if (strcmp(type, "ccstr") == 0) {
600 ResourceMark rm;
601 char* value = NEW_RESOURCE_ARRAY(char, strlen(line) + 1);
602 if (sscanf(line, "%*[ \t]%255[_a-zA-Z0-9]%n", value, &bytes_read) == 1) {
603 total_bytes_read += bytes_read;
604 return add_option_string(c_name, c_match, m_name, m_match, signature, flag, (ccstr)value);
605 } else {
606 jio_snprintf(errorbuf, buf_size, " Value cannot be read for flag %s of type %s", flag, type);
607 }
608 } else if (strcmp(type, "ccstrlist") == 0) {
609 // Accumulates several strings into one. The internal type is ccstr.
610 ResourceMark rm;
611 char* value = NEW_RESOURCE_ARRAY(char, strlen(line) + 1);
612 char* next_value = value;
613 if (sscanf(line, "%*[ \t]%255[_a-zA-Z0-9]%n", next_value, &bytes_read) == 1) {
614 total_bytes_read += bytes_read;
615 line += bytes_read;
616 next_value += bytes_read;
617 char* end_value = next_value-1;
618 while (sscanf(line, "%*[ \t]%255[_a-zA-Z0-9]%n", next_value, &bytes_read) == 1) {
619 total_bytes_read += bytes_read;
620 line += bytes_read;
621 *end_value = ' '; // override '\0'
622 next_value += bytes_read;
623 end_value = next_value-1;
624 }
625 return add_option_string(c_name, c_match, m_name, m_match, signature, flag, (ccstr)value);
626 } else {
627 jio_snprintf(errorbuf, buf_size, " Value cannot be read for flag %s of type %s", flag, type);
628 }
629 } else if (strcmp(type, "bool") == 0) {
630 char value[256];
631 if (sscanf(line, "%*[ \t]%255[a-zA-Z]%n", value, &bytes_read) == 1) {
632 if (strcmp(value, "true") == 0) {
633 total_bytes_read += bytes_read;
634 return add_option_string(c_name, c_match, m_name, m_match, signature, flag, true);
635 } else if (strcmp(value, "false") == 0) {
636 total_bytes_read += bytes_read;
637 return add_option_string(c_name, c_match, m_name, m_match, signature, flag, false);
638 } else {
639 jio_snprintf(errorbuf, buf_size, " Value cannot be read for flag %s of type %s", flag, type);
640 }
641 } else {
642 jio_snprintf(errorbuf, sizeof(errorbuf), " Value cannot be read for flag %s of type %s", flag, type);
643 }
644 } else if (strcmp(type, "double") == 0) {
645 char buffer[2][256];
646 // Decimal separator '.' has been replaced with ' ' or '/' earlier,
647 // so read integer and fraction part of double value separately.
648 if (sscanf(line, "%*[ \t]%255[0-9]%*[ /\t]%255[0-9]%n", buffer[0], buffer[1], &bytes_read) == 2) {
649 char value[512] = "";
650 strncat(value, buffer[0], 255);
651 strcat(value, ".");
652 strncat(value, buffer[1], 255);
653 total_bytes_read += bytes_read;
654 return add_option_string(c_name, c_match, m_name, m_match, signature, flag, atof(value));
655 } else {
656 jio_snprintf(errorbuf, buf_size, " Value cannot be read for flag %s of type %s", flag, type);
657 }
658 } else {
659 jio_snprintf(errorbuf, sizeof(errorbuf), " Type %s not supported ", type);
660 }
661 } else {
662 jio_snprintf(errorbuf, sizeof(errorbuf), " Flag name for type %s should be alphanumeric ", type);
663 }
664 return NULL;
665 }
666
667 void CompilerOracle::parse_from_line(char* line) {
668 if (line[0] == '\0') return;
669 if (line[0] == '#') return;
670
671 bool have_colon = (strstr(line, "::") != NULL);
672 for (char* lp = line; *lp != '\0'; lp++) {
673 // Allow '.' to separate the class name from the method name.
674 // This is the preferred spelling of methods:
675 // exclude java/lang/String.indexOf(I)I
676 // Allow ',' for spaces (eases command line quoting).
677 // exclude,java/lang/String.indexOf
678 // For backward compatibility, allow space as separator also.
679 // exclude java/lang/String indexOf
680 // exclude,java/lang/String,indexOf
681 // For easy cut-and-paste of method names, allow VM output format
682 // as produced by Method::print_short_name:
683 // exclude java.lang.String::indexOf
684 // For simple implementation convenience here, convert them all to space.
685 if (have_colon) {
686 if (*lp == '.') *lp = '/'; // dots build the package prefix
687 if (*lp == ':') *lp = ' ';
688 }
689 if (*lp == ',' || *lp == '.') *lp = ' ';
690 }
691
692 char* original_line = line;
693 int bytes_read;
694 OracleCommand command = parse_command_name(line, &bytes_read);
695 line += bytes_read;
696 ResourceMark rm;
697
698 if (command == UnknownCommand) {
699 ttyLocker ttyl;
700 tty->print_cr("CompileCommand: unrecognized command");
701 tty->print_cr(" \"%s\"", original_line);
702 return;
703 }
704
705 if (command == QuietCommand) {
706 _quiet = true;
707 return;
708 }
709
710 if (command == HelpCommand) {
711 usage();
712 return;
713 }
714
715 MethodMatcher::Mode c_match = MethodMatcher::Exact;
716 MethodMatcher::Mode m_match = MethodMatcher::Exact;
717 char class_name[256];
718 char method_name[256];
719 char sig[1024];
720 char errorbuf[1024];
721 const char* error_msg = NULL; // description of first error that appears
722 MethodMatcher* match = NULL;
723
724 if (scan_line(line, class_name, &c_match, method_name, &m_match, &bytes_read, error_msg)) {
725 EXCEPTION_MARK;
726 Symbol* c_name = SymbolTable::new_symbol(class_name, CHECK);
727 Symbol* m_name = SymbolTable::new_symbol(method_name, CHECK);
728 Symbol* signature = NULL;
729
730 line += bytes_read;
731
732 // Skip any leading spaces before signature
733 int whitespace_read = 0;
734 sscanf(line, "%*[ \t]%n", &whitespace_read);
735 if (whitespace_read > 0) {
736 line += whitespace_read;
737 }
738
739 // there might be a signature following the method.
740 // signatures always begin with ( so match that by hand
741 if (1 == sscanf(line, "(%254[[);/" RANGEBASE "]%n", sig + 1, &bytes_read)) {
742 sig[0] = '(';
743 line += bytes_read;
744 signature = SymbolTable::new_symbol(sig, CHECK);
745 }
746
747 if (command == OptionCommand) {
748 // Look for trailing options.
749 //
750 // Two types of trailing options are
751 // supported:
752 //
753 // (1) CompileCommand=option,Klass::method,flag
754 // (2) CompileCommand=option,Klass::method,type,flag,value
755 //
756 // Type (1) is used to enable a boolean flag for a method.
757 //
758 // Type (2) is used to support options with a value. Values can have the
759 // the following types: intx, uintx, bool, ccstr, ccstrlist, and double.
760 //
761 // For future extensions: extend scan_flag_and_value()
762 char option[256]; // stores flag for Type (1) and type of Type (2)
763 while (sscanf(line, "%*[ \t]%255[a-zA-Z0-9]%n", option, &bytes_read) == 1) {
764 if (match != NULL && !_quiet) {
765 // Print out the last match added
766 ttyLocker ttyl;
767 tty->print("CompileCommand: %s ", command_names[command]);
768 match->print();
769 }
770 line += bytes_read;
771
772 if (strcmp(option, "intx") == 0
773 || strcmp(option, "uintx") == 0
774 || strcmp(option, "bool") == 0
775 || strcmp(option, "ccstr") == 0
776 || strcmp(option, "ccstrlist") == 0
777 || strcmp(option, "double") == 0
778 ) {
779
780 // Type (2) option: parse flag name and value.
781 match = scan_flag_and_value(option, line, bytes_read,
782 c_name, c_match, m_name, m_match, signature,
783 errorbuf, sizeof(errorbuf));
784 if (match == NULL) {
785 error_msg = errorbuf;
786 break;
787 }
788 line += bytes_read;
789 } else {
790 // Type (1) option
791 match = add_option_string(c_name, c_match, m_name, m_match, signature, option, true);
792 }
793 } // while(
794 } else {
795 match = add_predicate(command, c_name, c_match, m_name, m_match, signature);
796 }
797 }
798
799 ttyLocker ttyl;
800 if (error_msg != NULL) {
801 // an error has happened
802 tty->print_cr("CompileCommand: An error occured during parsing");
803 tty->print_cr(" \"%s\"", original_line);
804 if (error_msg != NULL) {
805 tty->print_cr("%s", error_msg);
806 }
807 } else {
808 // check for remaining characters
809 bytes_read = 0;
810 sscanf(line, "%*[ \t]%n", &bytes_read);
811 if (line[bytes_read] != '\0') {
812 tty->print_cr("CompileCommand: Bad pattern");
813 tty->print_cr(" \"%s\"", original_line);
814 tty->print_cr(" Unrecognized text %s after command ", line);
815 } else if (match != NULL && !_quiet) {
816 tty->print("CompileCommand: %s ", command_names[command]);
817 match->print();
818 }
819 }
820 }
821
822 static const char* default_cc_file = ".hotspot_compiler";
823
824 static const char* cc_file() {
825 #ifdef ASSERT
826 if (CompileCommandFile == NULL)
827 return default_cc_file;
828 #endif
829 return CompileCommandFile;
830 }
831
832 bool CompilerOracle::has_command_file() {
833 return cc_file() != NULL;
834 }
835
836 bool CompilerOracle::_quiet = false;
837
838 void CompilerOracle::parse_from_file() {
839 assert(has_command_file(), "command file must be specified");
840 FILE* stream = fopen(cc_file(), "rt");
841 if (stream == NULL) return;
842
843 char token[1024];
844 int pos = 0;
845 int c = getc(stream);
846 while(c != EOF && pos < (int)(sizeof(token)-1)) {
847 if (c == '\n') {
848 token[pos++] = '\0';
849 parse_from_line(token);
850 pos = 0;
851 } else {
852 token[pos++] = c;
853 }
854 c = getc(stream);
855 }
856 token[pos++] = '\0';
857 parse_from_line(token);
858
859 fclose(stream);
860 }
861
862 void CompilerOracle::parse_from_string(const char* str, void (*parse_line)(char*)) {
863 char token[1024];
864 int pos = 0;
865 const char* sp = str;
866 int c = *sp++;
867 while (c != '\0' && pos < (int)(sizeof(token)-1)) {
868 if (c == '\n') {
869 token[pos++] = '\0';
870 parse_line(token);
871 pos = 0;
872 } else {
873 token[pos++] = c;
874 }
875 c = *sp++;
876 }
877 token[pos++] = '\0';
878 parse_line(token);
879 }
880
881 void CompilerOracle::append_comment_to_file(const char* message) {
882 assert(has_command_file(), "command file must be specified");
883 fileStream stream(fopen(cc_file(), "at"));
884 stream.print("# ");
885 for (int index = 0; message[index] != '\0'; index++) {
886 stream.put(message[index]);
887 if (message[index] == '\n') stream.print("# ");
888 }
889 stream.cr();
890 }
891
892 void CompilerOracle::append_exclude_to_file(methodHandle method) {
893 assert(has_command_file(), "command file must be specified");
894 fileStream stream(fopen(cc_file(), "at"));
895 stream.print("exclude ");
896 method->method_holder()->name()->print_symbol_on(&stream);
897 stream.print(".");
898 method->name()->print_symbol_on(&stream);
899 method->signature()->print_symbol_on(&stream);
900 stream.cr();
901 stream.cr();
902 }
903
904
905 void compilerOracle_init() {
906 CompilerOracle::parse_from_string(CompileCommand, CompilerOracle::parse_from_line);
907 CompilerOracle::parse_from_string(CompileOnly, CompilerOracle::parse_compile_only);
908 if (CompilerOracle::has_command_file()) {
909 CompilerOracle::parse_from_file();
910 } else {
911 struct stat buf;
912 if (os::stat(default_cc_file, &buf) == 0) {
913 warning("%s file is present but has been ignored. "
914 "Run with -XX:CompileCommandFile=%s to load the file.",
915 default_cc_file, default_cc_file);
916 }
917 }
918 if (lists[PrintCommand] != NULL) {
919 if (PrintAssembly) {
920 warning("CompileCommand and/or %s file contains 'print' commands, but PrintAssembly is also enabled", default_cc_file);
921 } else if (FLAG_IS_DEFAULT(DebugNonSafepoints)) {
922 warning("printing of assembly code is enabled; turning on DebugNonSafepoints to gain additional output");
923 DebugNonSafepoints = true;
924 }
925 }
926 }
927
928
929 void CompilerOracle::parse_compile_only(char * line) {
930 int i;
931 char name[1024];
932 const char* className = NULL;
933 const char* methodName = NULL;
934
935 bool have_colon = (strstr(line, "::") != NULL);
936 char method_sep = have_colon ? ':' : '.';
937
938 if (Verbose) {
939 tty->print_cr("%s", line);
940 }
941
942 ResourceMark rm;
943 while (*line != '\0') {
944 MethodMatcher::Mode c_match = MethodMatcher::Exact;
945 MethodMatcher::Mode m_match = MethodMatcher::Exact;
946
947 for (i = 0;
948 i < 1024 && *line != '\0' && *line != method_sep && *line != ',' && !isspace(*line);
949 line++, i++) {
950 name[i] = *line;
951 if (name[i] == '.') name[i] = '/'; // package prefix uses '/'
952 }
953
954 if (i > 0) {
955 char* newName = NEW_RESOURCE_ARRAY( char, i + 1);
956 if (newName == NULL)
957 return;
958 strncpy(newName, name, i);
959 newName[i] = '\0';
960
961 if (className == NULL) {
962 className = newName;
963 c_match = MethodMatcher::Prefix;
964 } else {
965 methodName = newName;
966 }
967 }
968
969 if (*line == method_sep) {
970 if (className == NULL) {
971 className = "";
972 c_match = MethodMatcher::Any;
973 } else {
974 // foo/bar.blah is an exact match on foo/bar, bar.blah is a suffix match on bar
975 if (strchr(className, '/') != NULL) {
976 c_match = MethodMatcher::Exact;
977 } else {
978 c_match = MethodMatcher::Suffix;
979 }
980 }
981 } else {
982 // got foo or foo/bar
983 if (className == NULL) {
984 ShouldNotReachHere();
985 } else {
986 // got foo or foo/bar
987 if (strchr(className, '/') != NULL) {
988 c_match = MethodMatcher::Prefix;
989 } else if (className[0] == '\0') {
990 c_match = MethodMatcher::Any;
991 } else {
992 c_match = MethodMatcher::Substring;
993 }
994 }
995 }
996
997 // each directive is terminated by , or NUL or . followed by NUL
998 if (*line == ',' || *line == '\0' || (line[0] == '.' && line[1] == '\0')) {
999 if (methodName == NULL) {
1000 methodName = "";
1001 if (*line != method_sep) {
1002 m_match = MethodMatcher::Any;
1003 }
1004 }
1005
1006 EXCEPTION_MARK;
1007 Symbol* c_name = SymbolTable::new_symbol(className, CHECK);
1008 Symbol* m_name = SymbolTable::new_symbol(methodName, CHECK);
1009 Symbol* signature = NULL;
1010
1011 add_predicate(CompileOnlyCommand, c_name, c_match, m_name, m_match, signature);
1012 if (PrintVMOptions) {
1013 tty->print("CompileOnly: compileonly ");
1014 lists[CompileOnlyCommand]->print();
1015 }
1016
1017 className = NULL;
1018 methodName = NULL;
1019 }
1020
1021 line = *line == '\0' ? line : line + 1;
1022 }
1023 }