1 /*
2 * Copyright (c) 1998, 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 #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
37 class MethodMatcher : public CHeapObj<mtCompiler> {
38 public:
39 enum Mode {
40 Exact,
41 Prefix = 1,
42 Suffix = 2,
43 Substring = Prefix | Suffix,
44 Any,
45 Unknown = -1
46 };
47
48 protected:
49 Symbol* _class_name;
50 Symbol* _method_name;
51 Symbol* _signature;
52 Mode _class_mode;
53 Mode _method_mode;
54 MethodMatcher* _next;
55
56 static bool match(Symbol* candidate, Symbol* match, Mode match_mode);
57
58 Symbol* class_name() const { return _class_name; }
59 Symbol* method_name() const { return _method_name; }
60 Symbol* signature() const { return _signature; }
61
62 public:
63 MethodMatcher(Symbol* class_name, Mode class_mode,
64 Symbol* method_name, Mode method_mode,
65 Symbol* signature, MethodMatcher* next);
66 MethodMatcher(Symbol* class_name, Symbol* method_name, MethodMatcher* next);
67
68 // utility method
69 MethodMatcher* find(methodHandle method) {
70 Symbol* class_name = method->method_holder()->name();
71 Symbol* method_name = method->name();
72 for (MethodMatcher* current = this; current != NULL; current = current->_next) {
73 if (match(class_name, current->class_name(), current->_class_mode) &&
74 match(method_name, current->method_name(), current->_method_mode) &&
75 (current->signature() == NULL || current->signature() == method->signature())) {
76 return current;
77 }
78 }
79 return NULL;
80 }
81
82 bool match(methodHandle method) {
83 return find(method) != NULL;
84 }
85
86 MethodMatcher* next() const { return _next; }
87
88 static void print_symbol(Symbol* h, Mode mode) {
89 ResourceMark rm;
90
91 if (mode == Suffix || mode == Substring || mode == Any) {
92 tty->print("*");
93 }
94 if (mode != Any) {
95 h->print_symbol_on(tty);
96 }
97 if (mode == Prefix || mode == Substring) {
98 tty->print("*");
99 }
100 }
101
102 void print_base() {
103 print_symbol(class_name(), _class_mode);
104 tty->print(".");
105 print_symbol(method_name(), _method_mode);
106 if (signature() != NULL) {
107 tty->print(" ");
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
171 class MethodOptionMatcher: public MethodMatcher {
172 const char * option;
173 public:
174 MethodOptionMatcher(Symbol* class_name, Mode class_mode,
175 Symbol* method_name, Mode method_mode,
176 Symbol* signature, const char * opt, MethodMatcher* next):
177 MethodMatcher(class_name, class_mode, method_name, method_mode, signature, next) {
178 option = opt;
179 }
180
181 bool match(methodHandle method, const char* opt) {
182 MethodOptionMatcher* current = this;
183 while (current != NULL) {
184 current = (MethodOptionMatcher*)current->find(method);
185 if (current == NULL) {
186 return false;
187 }
188 if (strcmp(current->option, opt) == 0) {
189 return true;
190 }
191 current = current->next();
192 }
193 return false;
194 }
195
196 MethodOptionMatcher* next() {
197 return (MethodOptionMatcher*)_next;
198 }
199
200 virtual void print() {
201 print_base();
202 tty->print(" %s", option);
203 tty->cr();
204 }
205 };
206
207
208
209 // this must parallel the command_names below
210 enum OracleCommand {
211 UnknownCommand = -1,
212 OracleFirstCommand = 0,
213 BreakCommand = OracleFirstCommand,
214 PrintCommand,
215 ExcludeCommand,
216 InlineCommand,
217 DontInlineCommand,
218 CompileOnlyCommand,
219 LogCommand,
220 OptionCommand,
221 QuietCommand,
222 HelpCommand,
223 OracleCommandCount
224 };
225
226 // this must parallel the enum OracleCommand
227 static const char * command_names[] = {
228 "break",
229 "print",
230 "exclude",
231 "inline",
232 "dontinline",
233 "compileonly",
234 "log",
235 "option",
236 "quiet",
237 "help"
238 };
239
240 static const char * command_name(OracleCommand command) {
241 if (command < OracleFirstCommand || command >= OracleCommandCount) {
242 return "unknown command";
243 }
244 return command_names[command];
245 }
246
247 class MethodMatcher;
248 static MethodMatcher* lists[OracleCommandCount] = { 0, };
249
250
251 static bool check_predicate(OracleCommand command, methodHandle method) {
252 return ((lists[command] != NULL) &&
253 !method.is_null() &&
254 lists[command]->match(method));
255 }
256
257
258 static MethodMatcher* add_predicate(OracleCommand command,
259 Symbol* class_name, MethodMatcher::Mode c_mode,
260 Symbol* method_name, MethodMatcher::Mode m_mode,
261 Symbol* signature) {
262 assert(command != OptionCommand, "must use add_option_string");
263 if (command == LogCommand && !LogCompilation && lists[LogCommand] == NULL)
264 tty->print_cr("Warning: +LogCompilation must be enabled in order for individual methods to be logged.");
265 lists[command] = new MethodMatcher(class_name, c_mode, method_name, m_mode, signature, lists[command]);
266 return lists[command];
267 }
268
269
270
271 static MethodMatcher* add_option_string(Symbol* class_name, MethodMatcher::Mode c_mode,
272 Symbol* method_name, MethodMatcher::Mode m_mode,
273 Symbol* signature,
274 const char* option) {
275 lists[OptionCommand] = new MethodOptionMatcher(class_name, c_mode, method_name, m_mode,
276 signature, option, lists[OptionCommand]);
277 return lists[OptionCommand];
278 }
279
280
281 bool CompilerOracle::has_option_string(methodHandle method, const char* option) {
282 return lists[OptionCommand] != NULL &&
283 ((MethodOptionMatcher*)lists[OptionCommand])->match(method, option);
284 }
285
286
287 bool CompilerOracle::should_exclude(methodHandle method, bool& quietly) {
288 quietly = true;
289 if (lists[ExcludeCommand] != NULL) {
290 if (lists[ExcludeCommand]->match(method)) {
291 quietly = _quiet;
292 return true;
293 }
294 }
295
296 if (lists[CompileOnlyCommand] != NULL) {
297 return !lists[CompileOnlyCommand]->match(method);
298 }
299 return false;
300 }
301
302
303 bool CompilerOracle::should_inline(methodHandle method) {
304 return (check_predicate(InlineCommand, method));
305 }
306
307
308 bool CompilerOracle::should_not_inline(methodHandle method) {
309 return (check_predicate(DontInlineCommand, method));
310 }
311
312
313 bool CompilerOracle::should_print(methodHandle method) {
314 return (check_predicate(PrintCommand, method));
315 }
316
317
318 bool CompilerOracle::should_log(methodHandle method) {
319 if (!LogCompilation) return false;
320 if (lists[LogCommand] == NULL) return true; // by default, log all
321 return (check_predicate(LogCommand, method));
322 }
323
324
325 bool CompilerOracle::should_break_at(methodHandle method) {
326 return check_predicate(BreakCommand, method);
327 }
328
329
330 static OracleCommand parse_command_name(const char * line, int* bytes_read) {
331 assert(ARRAY_SIZE(command_names) == OracleCommandCount,
332 "command_names size mismatch");
333
334 *bytes_read = 0;
335 char command[33];
336 int result = sscanf(line, "%32[a-z]%n", command, bytes_read);
337 for (uint i = 0; i < ARRAY_SIZE(command_names); i++) {
338 if (strcmp(command, command_names[i]) == 0) {
339 return (OracleCommand)i;
340 }
341 }
342 return UnknownCommand;
343 }
344
345
346 static void usage() {
347 tty->print_cr(" CompileCommand and the CompilerOracle allows simple control over");
348 tty->print_cr(" what's allowed to be compiled. The standard supported directives");
349 tty->print_cr(" are exclude and compileonly. The exclude directive stops a method");
350 tty->print_cr(" from being compiled and compileonly excludes all methods except for");
351 tty->print_cr(" the ones mentioned by compileonly directives. The basic form of");
352 tty->print_cr(" all commands is a command name followed by the name of the method");
353 tty->print_cr(" in one of two forms: the standard class file format as in");
354 tty->print_cr(" class/name.methodName or the PrintCompilation format");
355 tty->print_cr(" class.name::methodName. The method name can optionally be followed");
356 tty->print_cr(" by a space then the signature of the method in the class file");
357 tty->print_cr(" format. Otherwise the directive applies to all methods with the");
358 tty->print_cr(" same name and class regardless of signature. Leading and trailing");
359 tty->print_cr(" *'s in the class and/or method name allows a small amount of");
360 tty->print_cr(" wildcarding. ");
361 tty->cr();
362 tty->print_cr(" Examples:");
363 tty->cr();
364 tty->print_cr(" exclude java/lang/StringBuffer.append");
365 tty->print_cr(" compileonly java/lang/StringBuffer.toString ()Ljava/lang/String;");
366 tty->print_cr(" exclude java/lang/String*.*");
367 tty->print_cr(" exclude *.toString");
368 }
369
370
371 // The characters allowed in a class or method name. All characters > 0x7f
372 // are allowed in order to handle obfuscated class files (e.g. Volano)
373 #define RANGEBASE "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789$_<>" \
374 "\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f" \
375 "\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f" \
376 "\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf" \
377 "\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf" \
378 "\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf" \
379 "\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf" \
380 "\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef" \
381 "\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff"
382
383 #define RANGE0 "[*" RANGEBASE "]"
384 #define RANGEDOT "[*" RANGEBASE ".]"
385 #define RANGESLASH "[*" RANGEBASE "/]"
386
387
388 // Accept several syntaxes for these patterns
389 // original syntax
390 // cmd java.lang.String foo
391 // PrintCompilation syntax
392 // cmd java.lang.String::foo
393 // VM syntax
394 // cmd java/lang/String[. ]foo
395 //
396
397 static const char* patterns[] = {
398 "%*[ \t]%255" RANGEDOT " " "%255" RANGE0 "%n",
399 "%*[ \t]%255" RANGEDOT "::" "%255" RANGE0 "%n",
400 "%*[ \t]%255" RANGESLASH "%*[ .]" "%255" RANGE0 "%n",
401 };
402
403 static MethodMatcher::Mode check_mode(char name[], const char*& error_msg) {
404 int match = MethodMatcher::Exact;
405 while (name[0] == '*') {
406 match |= MethodMatcher::Suffix;
407 strcpy(name, name + 1);
408 }
409
410 if (strcmp(name, "*") == 0) return MethodMatcher::Any;
411
412 size_t len = strlen(name);
413 while (len > 0 && name[len - 1] == '*') {
414 match |= MethodMatcher::Prefix;
415 name[--len] = '\0';
416 }
417
418 if (strstr(name, "*") != NULL) {
419 error_msg = " Embedded * not allowed";
420 return MethodMatcher::Unknown;
421 }
422 return (MethodMatcher::Mode)match;
423 }
424
425 static bool scan_line(const char * line,
426 char class_name[], MethodMatcher::Mode* c_mode,
427 char method_name[], MethodMatcher::Mode* m_mode,
428 int* bytes_read, const char*& error_msg) {
429 *bytes_read = 0;
430 error_msg = NULL;
431 for (uint i = 0; i < ARRAY_SIZE(patterns); i++) {
432 if (2 == sscanf(line, patterns[i], class_name, method_name, bytes_read)) {
433 *c_mode = check_mode(class_name, error_msg);
434 *m_mode = check_mode(method_name, error_msg);
435 return *c_mode != MethodMatcher::Unknown && *m_mode != MethodMatcher::Unknown;
436 }
437 }
438 return false;
439 }
440
441
442
443 void CompilerOracle::parse_from_line(char* line) {
444 if (line[0] == '\0') return;
445 if (line[0] == '#') return;
446
447 bool have_colon = (strstr(line, "::") != NULL);
448 for (char* lp = line; *lp != '\0'; lp++) {
449 // Allow '.' to separate the class name from the method name.
450 // This is the preferred spelling of methods:
451 // exclude java/lang/String.indexOf(I)I
452 // Allow ',' for spaces (eases command line quoting).
453 // exclude,java/lang/String.indexOf
454 // For backward compatibility, allow space as separator also.
455 // exclude java/lang/String indexOf
456 // exclude,java/lang/String,indexOf
457 // For easy cut-and-paste of method names, allow VM output format
458 // as produced by Method::print_short_name:
459 // exclude java.lang.String::indexOf
460 // For simple implementation convenience here, convert them all to space.
461 if (have_colon) {
462 if (*lp == '.') *lp = '/'; // dots build the package prefix
463 if (*lp == ':') *lp = ' ';
464 }
465 if (*lp == ',' || *lp == '.') *lp = ' ';
466 }
467
468 char* original_line = line;
469 int bytes_read;
470 OracleCommand command = parse_command_name(line, &bytes_read);
471 line += bytes_read;
472
473 if (command == UnknownCommand) {
474 tty->print_cr("CompilerOracle: unrecognized line");
475 tty->print_cr(" \"%s\"", original_line);
476 return;
477 }
478
479 if (command == QuietCommand) {
480 _quiet = true;
481 return;
482 }
483
484 if (command == HelpCommand) {
485 usage();
486 return;
487 }
488
489 MethodMatcher::Mode c_match = MethodMatcher::Exact;
490 MethodMatcher::Mode m_match = MethodMatcher::Exact;
491 char class_name[256];
492 char method_name[256];
493 char sig[1024];
494 char errorbuf[1024];
495 const char* error_msg = NULL;
496 MethodMatcher* match = NULL;
497
498 if (scan_line(line, class_name, &c_match, method_name, &m_match, &bytes_read, error_msg)) {
499 EXCEPTION_MARK;
500 Symbol* c_name = SymbolTable::new_symbol(class_name, CHECK);
501 Symbol* m_name = SymbolTable::new_symbol(method_name, CHECK);
502 Symbol* signature = NULL;
503
504 line += bytes_read;
505 // there might be a signature following the method.
506 // signatures always begin with ( so match that by hand
507 if (1 == sscanf(line, "%*[ \t](%254[[);/" RANGEBASE "]%n", sig + 1, &bytes_read)) {
508 sig[0] = '(';
509 line += bytes_read;
510 signature = SymbolTable::new_symbol(sig, CHECK);
511 }
512
513 if (command == OptionCommand) {
514 // Look for trailing options to support
515 // ciMethod::has_option("string") to control features in the
516 // compiler. Multiple options may follow the method name.
517 char option[256];
518 while (sscanf(line, "%*[ \t]%255[a-zA-Z0-9]%n", option, &bytes_read) == 1) {
519 if (match != NULL && !_quiet) {
520 // Print out the last match added
521 tty->print("CompilerOracle: %s ", command_names[command]);
522 match->print();
523 }
524 match = add_option_string(c_name, c_match, m_name, m_match, signature, strdup(option));
525 line += bytes_read;
526 }
527 } else {
528 bytes_read = 0;
529 sscanf(line, "%*[ \t]%n", &bytes_read);
530 if (line[bytes_read] != '\0') {
531 jio_snprintf(errorbuf, sizeof(errorbuf), " Unrecognized text after command: %s", line);
532 error_msg = errorbuf;
533 } else {
534 match = add_predicate(command, c_name, c_match, m_name, m_match, signature);
535 }
536 }
537 }
538
539 if (match != NULL) {
540 if (!_quiet) {
541 tty->print("CompilerOracle: %s ", command_names[command]);
542 match->print();
543 }
544 } else {
545 tty->print_cr("CompilerOracle: unrecognized line");
546 tty->print_cr(" \"%s\"", original_line);
547 if (error_msg != NULL) {
548 tty->print_cr(error_msg);
549 }
550 }
551 }
552
553 static const char* default_cc_file = ".hotspot_compiler";
554
555 static const char* cc_file() {
556 #ifdef ASSERT
557 if (CompileCommandFile == NULL)
558 return default_cc_file;
559 #endif
560 return CompileCommandFile;
561 }
562
563 bool CompilerOracle::has_command_file() {
564 return cc_file() != NULL;
565 }
566
567 bool CompilerOracle::_quiet = false;
568
569 void CompilerOracle::parse_from_file() {
570 assert(has_command_file(), "command file must be specified");
571 FILE* stream = fopen(cc_file(), "rt");
572 if (stream == NULL) return;
573
574 char token[1024];
575 int pos = 0;
576 int c = getc(stream);
577 while(c != EOF && pos < (int)(sizeof(token)-1)) {
578 if (c == '\n') {
579 token[pos++] = '\0';
580 parse_from_line(token);
581 pos = 0;
582 } else {
583 token[pos++] = c;
584 }
585 c = getc(stream);
586 }
587 token[pos++] = '\0';
588 parse_from_line(token);
589
590 fclose(stream);
591 }
592
593 void CompilerOracle::parse_from_string(const char* str, void (*parse_line)(char*)) {
594 char token[1024];
595 int pos = 0;
596 const char* sp = str;
597 int c = *sp++;
598 while (c != '\0' && pos < (int)(sizeof(token)-1)) {
599 if (c == '\n') {
600 token[pos++] = '\0';
601 parse_line(token);
602 pos = 0;
603 } else {
604 token[pos++] = c;
605 }
606 c = *sp++;
607 }
608 token[pos++] = '\0';
609 parse_line(token);
610 }
611
612 void CompilerOracle::append_comment_to_file(const char* message) {
613 assert(has_command_file(), "command file must be specified");
614 fileStream stream(fopen(cc_file(), "at"));
615 stream.print("# ");
616 for (int index = 0; message[index] != '\0'; index++) {
617 stream.put(message[index]);
618 if (message[index] == '\n') stream.print("# ");
619 }
620 stream.cr();
621 }
622
623 void CompilerOracle::append_exclude_to_file(methodHandle method) {
624 assert(has_command_file(), "command file must be specified");
625 fileStream stream(fopen(cc_file(), "at"));
626 stream.print("exclude ");
627 method->method_holder()->name()->print_symbol_on(&stream);
628 stream.print(".");
629 method->name()->print_symbol_on(&stream);
630 method->signature()->print_symbol_on(&stream);
631 stream.cr();
632 stream.cr();
633 }
634
635
636 void compilerOracle_init() {
637 CompilerOracle::parse_from_string(CompileCommand, CompilerOracle::parse_from_line);
638 CompilerOracle::parse_from_string(CompileOnly, CompilerOracle::parse_compile_only);
639 if (CompilerOracle::has_command_file()) {
640 CompilerOracle::parse_from_file();
641 } else {
642 struct stat buf;
643 if (os::stat(default_cc_file, &buf) == 0) {
644 warning("%s file is present but has been ignored. "
645 "Run with -XX:CompileCommandFile=%s to load the file.",
646 default_cc_file, default_cc_file);
647 }
648 }
649 if (lists[PrintCommand] != NULL) {
650 if (PrintAssembly) {
651 warning("CompileCommand and/or %s file contains 'print' commands, but PrintAssembly is also enabled", default_cc_file);
652 } else if (FLAG_IS_DEFAULT(DebugNonSafepoints)) {
653 warning("printing of assembly code is enabled; turning on DebugNonSafepoints to gain additional output");
654 DebugNonSafepoints = true;
655 }
656 }
657 }
658
659
660 void CompilerOracle::parse_compile_only(char * line) {
661 int i;
662 char name[1024];
663 const char* className = NULL;
664 const char* methodName = NULL;
665
666 bool have_colon = (strstr(line, "::") != NULL);
667 char method_sep = have_colon ? ':' : '.';
668
669 if (Verbose) {
670 tty->print_cr(line);
671 }
672
673 ResourceMark rm;
674 while (*line != '\0') {
675 MethodMatcher::Mode c_match = MethodMatcher::Exact;
676 MethodMatcher::Mode m_match = MethodMatcher::Exact;
677
678 for (i = 0;
679 i < 1024 && *line != '\0' && *line != method_sep && *line != ',' && !isspace(*line);
680 line++, i++) {
681 name[i] = *line;
682 if (name[i] == '.') name[i] = '/'; // package prefix uses '/'
683 }
684
685 if (i > 0) {
686 char* newName = NEW_RESOURCE_ARRAY( char, i + 1);
687 if (newName == NULL)
688 return;
689 strncpy(newName, name, i);
690 newName[i] = '\0';
691
692 if (className == NULL) {
693 className = newName;
694 c_match = MethodMatcher::Prefix;
695 } else {
696 methodName = newName;
697 }
698 }
699
700 if (*line == method_sep) {
701 if (className == NULL) {
702 className = "";
703 c_match = MethodMatcher::Any;
704 } else {
705 // foo/bar.blah is an exact match on foo/bar, bar.blah is a suffix match on bar
706 if (strchr(className, '/') != NULL) {
707 c_match = MethodMatcher::Exact;
708 } else {
709 c_match = MethodMatcher::Suffix;
710 }
711 }
712 } else {
713 // got foo or foo/bar
714 if (className == NULL) {
715 ShouldNotReachHere();
716 } else {
717 // got foo or foo/bar
718 if (strchr(className, '/') != NULL) {
719 c_match = MethodMatcher::Prefix;
720 } else if (className[0] == '\0') {
721 c_match = MethodMatcher::Any;
722 } else {
723 c_match = MethodMatcher::Substring;
724 }
725 }
726 }
727
728 // each directive is terminated by , or NUL or . followed by NUL
729 if (*line == ',' || *line == '\0' || (line[0] == '.' && line[1] == '\0')) {
730 if (methodName == NULL) {
731 methodName = "";
732 if (*line != method_sep) {
733 m_match = MethodMatcher::Any;
734 }
735 }
736
737 EXCEPTION_MARK;
738 Symbol* c_name = SymbolTable::new_symbol(className, CHECK);
739 Symbol* m_name = SymbolTable::new_symbol(methodName, CHECK);
740 Symbol* signature = NULL;
741
742 add_predicate(CompileOnlyCommand, c_name, c_match, m_name, m_match, signature);
743 if (PrintVMOptions) {
744 tty->print("CompileOnly: compileonly ");
745 lists[CompileOnlyCommand]->print();
746 }
747
748 className = NULL;
749 methodName = NULL;
750 }
751
752 line = *line == '\0' ? line : line + 1;
753 }
754 }