Mercurial > hg > truffle
annotate src/os/posix/launcher/java_md.c @ 9745:b9c5ce8d552d
ForeignCallNode kills all memory locations
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 16 May 2013 20:23:27 +0200 |
parents | 203f64878aab |
children |
rev | line source |
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1985 | 1 /* |
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203f64878aab
7102489: RFE: cleanup jlong typedef on __APPLE__and _LLP64 systems.
hseigel
parents:
6842
diff
changeset
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2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
1985 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
20 * or visit www.oracle.com if you need additional information or have any | |
21 * questions. | |
22 * | |
23 */ | |
24 | |
25 | |
26 #include "java.h" | |
27 #include <dirent.h> | |
28 #include <dlfcn.h> | |
29 #include <fcntl.h> | |
30 #include <inttypes.h> | |
31 #include <stdio.h> | |
32 #include <string.h> | |
33 #include <stdlib.h> | |
34 #include <limits.h> | |
35 #include <sys/stat.h> | |
36 #include <unistd.h> | |
37 #include <sys/types.h> | |
38 | |
39 #ifndef GAMMA | |
40 #include "manifest_info.h" | |
41 #include "version_comp.h" | |
42 #endif | |
43 | |
3960 | 44 #if defined(__linux__) || defined(_ALLBSD_SOURCE) |
1985 | 45 #include <pthread.h> |
46 #else | |
47 #include <thread.h> | |
48 #endif | |
49 | |
3960 | 50 #ifdef __APPLE__ |
51 #define JVM_DLL "libjvm.dylib" | |
52 #define JAVA_DLL "libjava.dylib" | |
53 #define LD_LIBRARY_PATH "DYLD_LIBRARY_PATH" | |
54 #else | |
1985 | 55 #define JVM_DLL "libjvm.so" |
56 #define JAVA_DLL "libjava.so" | |
3960 | 57 #define LD_LIBRARY_PATH "LD_LIBRARY_PATH" |
58 #endif | |
1985 | 59 |
60 #ifndef GAMMA /* launcher.make defines ARCH */ | |
61 /* | |
62 * If a processor / os combination has the ability to run binaries of | |
63 * two data models and cohabitation of jre/jdk bits with both data | |
64 * models is supported, then DUAL_MODE is defined. When DUAL_MODE is | |
65 * defined, the architecture names for the narrow and wide version of | |
66 * the architecture are defined in LIBARCH64NAME and LIBARCH32NAME. Currently | |
67 * only Solaris on sparc/sparcv9 and i586/amd64 is DUAL_MODE; linux | |
68 * i586/amd64 could be defined as DUAL_MODE but that is not the | |
69 * current policy. | |
70 */ | |
71 | |
72 #ifndef LIBARCHNAME | |
73 # error "The macro LIBARCHNAME was not defined on the compile line" | |
74 #endif | |
75 | |
76 #ifdef __sun | |
77 # define DUAL_MODE | |
78 # ifndef LIBARCH32NAME | |
79 # error "The macro LIBARCH32NAME was not defined on the compile line" | |
80 # endif | |
81 # ifndef LIBARCH64NAME | |
82 # error "The macro LIBARCH64NAME was not defined on the compile line" | |
83 # endif | |
84 # include <sys/systeminfo.h> | |
85 # include <sys/elf.h> | |
86 # include <stdio.h> | |
87 #endif | |
88 | |
89 #endif /* ifndef GAMMA */ | |
90 | |
91 /* pointer to environment */ | |
92 extern char **environ; | |
93 | |
94 #ifndef GAMMA | |
95 /* | |
96 * A collection of useful strings. One should think of these as #define | |
97 * entries, but actual strings can be more efficient (with many compilers). | |
98 */ | |
99 #ifdef __linux__ | |
100 static const char *system_dir = "/usr/java"; | |
101 static const char *user_dir = "/java"; | |
102 #else /* Solaris */ | |
103 static const char *system_dir = "/usr/jdk"; | |
104 static const char *user_dir = "/jdk"; | |
105 #endif | |
106 | |
107 #endif /* ifndef GAMMA */ | |
108 | |
109 /* | |
110 * Flowchart of launcher execs and options processing on unix | |
111 * | |
112 * The selection of the proper vm shared library to open depends on | |
113 * several classes of command line options, including vm "flavor" | |
114 * options (-client, -server) and the data model options, -d32 and | |
115 * -d64, as well as a version specification which may have come from | |
116 * the command line or from the manifest of an executable jar file. | |
117 * The vm selection options are not passed to the running | |
118 * virtual machine; they must be screened out by the launcher. | |
119 * | |
120 * The version specification (if any) is processed first by the | |
121 * platform independent routine SelectVersion. This may result in | |
122 * the exec of the specified launcher version. | |
123 * | |
124 * Typically, the launcher execs at least once to ensure a suitable | |
125 * LD_LIBRARY_PATH is in effect for the process. The first exec | |
126 * screens out all the data model options; leaving the choice of data | |
127 * model implicit in the binary selected to run. However, in case no | |
128 * exec is done, the data model options are screened out before the vm | |
129 * is invoked. | |
130 * | |
131 * incoming argv ------------------------------ | |
132 * | | | |
133 * \|/ | | |
134 * CheckJVMType | | |
135 * (removes -client, -server, etc.) | | |
136 * \|/ | |
137 * CreateExecutionEnvironment | |
138 * (removes -d32 and -d64, | |
139 * determines desired data model, | |
140 * sets up LD_LIBRARY_PATH, | |
141 * and exec's) | |
142 * | | |
143 * -------------------------------------------- | |
144 * | | |
145 * \|/ | |
146 * exec child 1 incoming argv ----------------- | |
147 * | | | |
148 * \|/ | | |
149 * CheckJVMType | | |
150 * (removes -client, -server, etc.) | | |
151 * | \|/ | |
152 * | CreateExecutionEnvironment | |
153 * | (verifies desired data model | |
154 * | is running and acceptable | |
155 * | LD_LIBRARY_PATH; | |
156 * | no-op in child) | |
157 * | | |
158 * \|/ | |
159 * TranslateDashJArgs... | |
160 * (Prepare to pass args to vm) | |
161 * | | |
162 * | | |
163 * | | |
164 * \|/ | |
165 * ParseArguments | |
166 * (ignores -d32 and -d64, | |
167 * processes version options, | |
168 * creates argument list for vm, | |
169 * etc.) | |
170 * | |
171 */ | |
172 | |
173 static char *SetExecname(char **argv); | |
174 static char * GetExecname(); | |
175 static jboolean GetJVMPath(const char *jrepath, const char *jvmtype, | |
176 char *jvmpath, jint jvmpathsize, char * arch); | |
177 static jboolean GetJREPath(char *path, jint pathsize, char * arch, jboolean speculative); | |
178 | |
179 #ifndef GAMMA | |
180 const char * | |
181 GetArch() | |
182 { | |
183 return LIBARCHNAME; | |
184 } | |
185 #endif /* ifndef GAMMA */ | |
186 | |
187 void | |
188 CreateExecutionEnvironment(int *_argcp, | |
189 char ***_argvp, | |
190 char jrepath[], | |
191 jint so_jrepath, | |
192 char jvmpath[], | |
193 jint so_jvmpath, | |
194 char **original_argv) { | |
195 /* | |
196 * First, determine if we are running the desired data model. If we | |
197 * are running the desired data model, all the error messages | |
198 * associated with calling GetJREPath, ReadKnownVMs, etc. should be | |
199 * output. However, if we are not running the desired data model, | |
200 * some of the errors should be suppressed since it is more | |
201 * informative to issue an error message based on whether or not the | |
202 * os/processor combination has dual mode capabilities. | |
203 */ | |
204 | |
205 char *execname = NULL; | |
206 int original_argc = *_argcp; | |
207 jboolean jvmpathExists; | |
208 | |
209 /* Compute the name of the executable */ | |
210 execname = SetExecname(*_argvp); | |
211 | |
212 #ifndef GAMMA | |
213 /* Set the LD_LIBRARY_PATH environment variable, check data model | |
214 flags, and exec process, if needed */ | |
215 { | |
216 char *arch = (char *)GetArch(); /* like sparc or sparcv9 */ | |
217 char * jvmtype = NULL; | |
218 int argc = *_argcp; | |
219 char **argv = original_argv; | |
220 | |
221 char *runpath = NULL; /* existing effective LD_LIBRARY_PATH | |
222 setting */ | |
223 | |
224 int running = /* What data model is being ILP32 => | |
225 32 bit vm; LP64 => 64 bit vm */ | |
226 #ifdef _LP64 | |
227 64; | |
228 #else | |
229 32; | |
230 #endif | |
231 | |
232 int wanted = running; /* What data mode is being | |
233 asked for? Current model is | |
234 fine unless another model | |
235 is asked for */ | |
236 | |
237 char* new_runpath = NULL; /* desired new LD_LIBRARY_PATH string */ | |
238 char* newpath = NULL; /* path on new LD_LIBRARY_PATH */ | |
239 char* lastslash = NULL; | |
240 | |
241 char** newenvp = NULL; /* current environment */ | |
242 | |
243 char** newargv = NULL; | |
244 int newargc = 0; | |
245 #ifdef __sun | |
246 char* dmpath = NULL; /* data model specific LD_LIBRARY_PATH, | |
247 Solaris only */ | |
248 #endif | |
249 | |
250 /* | |
251 * Starting in 1.5, all unix platforms accept the -d32 and -d64 | |
252 * options. On platforms where only one data-model is supported | |
253 * (e.g. ia-64 Linux), using the flag for the other data model is | |
254 * an error and will terminate the program. | |
255 */ | |
256 | |
257 { /* open new scope to declare local variables */ | |
258 int i; | |
259 | |
260 newargv = (char **)JLI_MemAlloc((argc+1) * sizeof(*newargv)); | |
261 newargv[newargc++] = argv[0]; | |
262 | |
263 /* scan for data model arguments and remove from argument list; | |
264 last occurrence determines desired data model */ | |
265 for (i=1; i < argc; i++) { | |
266 | |
267 if (strcmp(argv[i], "-J-d64") == 0 || strcmp(argv[i], "-d64") == 0) { | |
268 wanted = 64; | |
269 continue; | |
270 } | |
271 if (strcmp(argv[i], "-J-d32") == 0 || strcmp(argv[i], "-d32") == 0) { | |
272 wanted = 32; | |
273 continue; | |
274 } | |
275 newargv[newargc++] = argv[i]; | |
276 | |
277 #ifdef JAVA_ARGS | |
278 if (argv[i][0] != '-') | |
279 continue; | |
280 #else | |
281 if (strcmp(argv[i], "-classpath") == 0 || strcmp(argv[i], "-cp") == 0) { | |
282 i++; | |
283 if (i >= argc) break; | |
284 newargv[newargc++] = argv[i]; | |
285 continue; | |
286 } | |
287 if (argv[i][0] != '-') { i++; break; } | |
288 #endif | |
289 } | |
290 | |
291 /* copy rest of args [i .. argc) */ | |
292 while (i < argc) { | |
293 newargv[newargc++] = argv[i++]; | |
294 } | |
295 newargv[newargc] = NULL; | |
296 | |
297 /* | |
298 * newargv has all proper arguments here | |
299 */ | |
300 | |
301 argc = newargc; | |
302 argv = newargv; | |
303 } | |
304 | |
305 /* If the data model is not changing, it is an error if the | |
306 jvmpath does not exist */ | |
307 if (wanted == running) { | |
308 /* Find out where the JRE is that we will be using. */ | |
309 if (!GetJREPath(jrepath, so_jrepath, arch, JNI_FALSE) ) { | |
310 fprintf(stderr, "Error: could not find Java 2 Runtime Environment.\n"); | |
311 exit(2); | |
312 } | |
313 | |
314 /* Find the specified JVM type */ | |
315 if (ReadKnownVMs(jrepath, arch, JNI_FALSE) < 1) { | |
316 fprintf(stderr, "Error: no known VMs. (check for corrupt jvm.cfg file)\n"); | |
317 exit(1); | |
318 } | |
319 | |
320 jvmpath[0] = '\0'; | |
321 jvmtype = CheckJvmType(_argcp, _argvp, JNI_FALSE); | |
322 | |
323 if (!GetJVMPath(jrepath, jvmtype, jvmpath, so_jvmpath, arch )) { | |
324 fprintf(stderr, "Error: no `%s' JVM at `%s'.\n", jvmtype, jvmpath); | |
325 exit(4); | |
326 } | |
327 } else { /* do the same speculatively or exit */ | |
328 #ifdef DUAL_MODE | |
329 if (running != wanted) { | |
330 /* Find out where the JRE is that we will be using. */ | |
331 if (!GetJREPath(jrepath, so_jrepath, ((wanted==64)?LIBARCH64NAME:LIBARCH32NAME), JNI_TRUE)) { | |
332 goto EndDataModelSpeculate; | |
333 } | |
334 | |
335 /* | |
336 * Read in jvm.cfg for target data model and process vm | |
337 * selection options. | |
338 */ | |
339 if (ReadKnownVMs(jrepath, ((wanted==64)?LIBARCH64NAME:LIBARCH32NAME), JNI_TRUE) < 1) { | |
340 goto EndDataModelSpeculate; | |
341 } | |
342 jvmpath[0] = '\0'; | |
343 jvmtype = CheckJvmType(_argcp, _argvp, JNI_TRUE); | |
344 /* exec child can do error checking on the existence of the path */ | |
345 jvmpathExists = GetJVMPath(jrepath, jvmtype, jvmpath, so_jvmpath, | |
346 ((wanted==64)?LIBARCH64NAME:LIBARCH32NAME)); | |
347 | |
348 } | |
349 EndDataModelSpeculate: /* give up and let other code report error message */ | |
350 ; | |
351 #else | |
352 fprintf(stderr, "Running a %d-bit JVM is not supported on this platform.\n", wanted); | |
353 exit(1); | |
354 #endif | |
355 } | |
356 | |
357 /* | |
358 * We will set the LD_LIBRARY_PATH as follows: | |
359 * | |
360 * o $JVMPATH (directory portion only) | |
361 * o $JRE/lib/$LIBARCHNAME | |
362 * o $JRE/../lib/$LIBARCHNAME | |
363 * | |
364 * followed by the user's previous effective LD_LIBRARY_PATH, if | |
365 * any. | |
366 */ | |
367 | |
368 #ifdef __sun | |
369 /* | |
370 * Starting in Solaris 7, ld.so.1 supports three LD_LIBRARY_PATH | |
371 * variables: | |
372 * | |
373 * 1. LD_LIBRARY_PATH -- used for 32 and 64 bit searches if | |
374 * data-model specific variables are not set. | |
375 * | |
376 * 2. LD_LIBRARY_PATH_64 -- overrides and replaces LD_LIBRARY_PATH | |
377 * for 64-bit binaries. | |
378 * | |
379 * 3. LD_LIBRARY_PATH_32 -- overrides and replaces LD_LIBRARY_PATH | |
380 * for 32-bit binaries. | |
381 * | |
382 * The vm uses LD_LIBRARY_PATH to set the java.library.path system | |
383 * property. To shield the vm from the complication of multiple | |
384 * LD_LIBRARY_PATH variables, if the appropriate data model | |
385 * specific variable is set, we will act as if LD_LIBRARY_PATH had | |
386 * the value of the data model specific variant and the data model | |
387 * specific variant will be unset. Note that the variable for the | |
388 * *wanted* data model must be used (if it is set), not simply the | |
389 * current running data model. | |
390 */ | |
391 | |
392 switch(wanted) { | |
393 case 0: | |
394 if(running == 32) { | |
395 dmpath = getenv("LD_LIBRARY_PATH_32"); | |
396 wanted = 32; | |
397 } | |
398 else { | |
399 dmpath = getenv("LD_LIBRARY_PATH_64"); | |
400 wanted = 64; | |
401 } | |
402 break; | |
403 | |
404 case 32: | |
405 dmpath = getenv("LD_LIBRARY_PATH_32"); | |
406 break; | |
407 | |
408 case 64: | |
409 dmpath = getenv("LD_LIBRARY_PATH_64"); | |
410 break; | |
411 | |
412 default: | |
413 fprintf(stderr, "Improper value at line %d.", __LINE__); | |
414 exit(1); /* unknown value in wanted */ | |
415 break; | |
416 } | |
417 | |
418 /* | |
419 * If dmpath is NULL, the relevant data model specific variable is | |
420 * not set and normal LD_LIBRARY_PATH should be used. | |
421 */ | |
422 if( dmpath == NULL) { | |
423 runpath = getenv("LD_LIBRARY_PATH"); | |
424 } | |
425 else { | |
426 runpath = dmpath; | |
427 } | |
428 #else | |
429 /* | |
430 * If not on Solaris, assume only a single LD_LIBRARY_PATH | |
431 * variable. | |
432 */ | |
3960 | 433 runpath = getenv(LD_LIBRARY_PATH); |
1985 | 434 #endif /* __sun */ |
435 | |
3960 | 436 #if defined(__linux__) |
1985 | 437 /* |
438 * On linux, if a binary is running as sgid or suid, glibc sets | |
439 * LD_LIBRARY_PATH to the empty string for security purposes. (In | |
440 * contrast, on Solaris the LD_LIBRARY_PATH variable for a | |
441 * privileged binary does not lose its settings; but the dynamic | |
442 * linker does apply more scrutiny to the path.) The launcher uses | |
443 * the value of LD_LIBRARY_PATH to prevent an exec loop. | |
444 * Therefore, if we are running sgid or suid, this function's | |
445 * setting of LD_LIBRARY_PATH will be ineffective and we should | |
446 * return from the function now. Getting the right libraries to | |
447 * be found must be handled through other mechanisms. | |
448 */ | |
449 if((getgid() != getegid()) || (getuid() != geteuid()) ) { | |
450 return; | |
451 } | |
3960 | 452 #elif defined(_ALLBSD_SOURCE) |
453 /* | |
454 * On BSD, if a binary is running as sgid or suid, libc sets | |
455 * LD_LIBRARY_PATH to the empty string for security purposes. (In | |
456 * contrast, on Solaris the LD_LIBRARY_PATH variable for a | |
457 * privileged binary does not lose its settings; but the dynamic | |
458 * linker does apply more scrutiny to the path.) The launcher uses | |
459 * the value of LD_LIBRARY_PATH to prevent an exec loop. | |
460 * Therefore, if we are running sgid or suid, this function's | |
461 * setting of LD_LIBRARY_PATH will be ineffective and we should | |
462 * return from the function now. Getting the right libraries to | |
463 * be found must be handled through other mechanisms. | |
464 */ | |
465 if(issetugid()) { | |
466 return; | |
467 } | |
1985 | 468 #endif |
469 | |
470 /* runpath contains current effective LD_LIBRARY_PATH setting */ | |
471 | |
472 jvmpath = JLI_StringDup(jvmpath); | |
473 new_runpath = JLI_MemAlloc( ((runpath!=NULL)?strlen(runpath):0) + | |
474 2*strlen(jrepath) + 2*strlen(arch) + | |
475 strlen(jvmpath) + 52); | |
3960 | 476 newpath = new_runpath + strlen(LD_LIBRARY_PATH "="); |
1985 | 477 |
478 | |
479 /* | |
480 * Create desired LD_LIBRARY_PATH value for target data model. | |
481 */ | |
482 { | |
483 /* remove the name of the .so from the JVM path */ | |
484 lastslash = strrchr(jvmpath, '/'); | |
485 if (lastslash) | |
486 *lastslash = '\0'; | |
487 | |
488 | |
489 /* jvmpath, ((running != wanted)?((wanted==64)?"/"LIBARCH64NAME:"/.."):""), */ | |
490 | |
3960 | 491 sprintf(new_runpath, LD_LIBRARY_PATH "=" |
1985 | 492 "%s:" |
493 "%s/lib/%s:" | |
494 "%s/../lib/%s", | |
495 jvmpath, | |
496 #ifdef DUAL_MODE | |
497 jrepath, ((wanted==64)?LIBARCH64NAME:LIBARCH32NAME), | |
498 jrepath, ((wanted==64)?LIBARCH64NAME:LIBARCH32NAME) | |
499 #else | |
500 jrepath, arch, | |
501 jrepath, arch | |
502 #endif | |
503 ); | |
504 | |
505 | |
506 /* | |
507 * Check to make sure that the prefix of the current path is the | |
508 * desired environment variable setting. | |
509 */ | |
510 if (runpath != NULL && | |
511 strncmp(newpath, runpath, strlen(newpath))==0 && | |
512 (runpath[strlen(newpath)] == 0 || runpath[strlen(newpath)] == ':') && | |
513 (running == wanted) /* data model does not have to be changed */ | |
514 #ifdef __sun | |
515 && (dmpath == NULL) /* data model specific variables not set */ | |
516 #endif | |
517 ) { | |
518 | |
519 return; | |
520 | |
521 } | |
522 } | |
523 | |
524 /* | |
525 * Place the desired environment setting onto the prefix of | |
526 * LD_LIBRARY_PATH. Note that this prevents any possible infinite | |
527 * loop of execv() because we test for the prefix, above. | |
528 */ | |
529 if (runpath != 0) { | |
530 strcat(new_runpath, ":"); | |
531 strcat(new_runpath, runpath); | |
532 } | |
533 | |
534 if( putenv(new_runpath) != 0) { | |
535 exit(1); /* problem allocating memory; LD_LIBRARY_PATH not set | |
536 properly */ | |
537 } | |
538 | |
539 /* | |
540 * Unix systems document that they look at LD_LIBRARY_PATH only | |
541 * once at startup, so we have to re-exec the current executable | |
542 * to get the changed environment variable to have an effect. | |
543 */ | |
544 | |
545 #ifdef __sun | |
546 /* | |
547 * If dmpath is not NULL, remove the data model specific string | |
548 * in the environment for the exec'ed child. | |
549 */ | |
550 | |
551 if( dmpath != NULL) | |
552 (void)UnsetEnv((wanted==32)?"LD_LIBRARY_PATH_32":"LD_LIBRARY_PATH_64"); | |
553 #endif | |
554 | |
555 newenvp = environ; | |
556 | |
557 { | |
558 char *newexec = execname; | |
559 #ifdef DUAL_MODE | |
560 /* | |
561 * If the data model is being changed, the path to the | |
562 * executable must be updated accordingly; the executable name | |
563 * and directory the executable resides in are separate. In the | |
564 * case of 32 => 64, the new bits are assumed to reside in, e.g. | |
565 * "olddir/LIBARCH64NAME/execname"; in the case of 64 => 32, | |
566 * the bits are assumed to be in "olddir/../execname". For example, | |
567 * | |
568 * olddir/sparcv9/execname | |
569 * olddir/amd64/execname | |
570 * | |
571 * for Solaris SPARC and Linux amd64, respectively. | |
572 */ | |
573 | |
574 if (running != wanted) { | |
575 char *oldexec = strcpy(JLI_MemAlloc(strlen(execname) + 1), execname); | |
576 char *olddir = oldexec; | |
577 char *oldbase = strrchr(oldexec, '/'); | |
578 | |
579 | |
580 newexec = JLI_MemAlloc(strlen(execname) + 20); | |
581 *oldbase++ = 0; | |
582 sprintf(newexec, "%s/%s/%s", olddir, | |
583 ((wanted==64) ? LIBARCH64NAME : ".."), oldbase); | |
584 argv[0] = newexec; | |
585 } | |
586 #endif | |
587 | |
588 (void)fflush(stdout); | |
589 (void)fflush(stderr); | |
590 execve(newexec, argv, newenvp); | |
591 perror("execve()"); | |
592 | |
593 fprintf(stderr, "Error trying to exec %s.\n", newexec); | |
594 fprintf(stderr, "Check if file exists and permissions are set correctly.\n"); | |
595 | |
596 #ifdef DUAL_MODE | |
597 if (running != wanted) { | |
598 fprintf(stderr, "Failed to start a %d-bit JVM process from a %d-bit JVM.\n", | |
599 wanted, running); | |
600 # ifdef __sun | |
601 | |
602 # ifdef __sparc | |
603 fprintf(stderr, "Verify all necessary J2SE components have been installed.\n" ); | |
604 fprintf(stderr, | |
605 "(Solaris SPARC 64-bit components must be installed after 32-bit components.)\n" ); | |
606 # else | |
607 fprintf(stderr, "Either 64-bit processes are not supported by this platform\n"); | |
608 fprintf(stderr, "or the 64-bit components have not been installed.\n"); | |
609 # endif | |
610 } | |
611 # endif | |
612 #endif | |
613 | |
614 } | |
615 | |
616 exit(1); | |
617 } | |
618 | |
619 #else /* ifndef GAMMA */ | |
620 | |
621 /* | |
622 * gamma launcher is simpler in that it doesn't handle VM flavors, data | |
623 * model, LD_LIBRARY_PATH, etc. Assuming everything is set-up correctly | |
624 * all we need to do here is to return correct path names. See also | |
625 * GetJVMPath() and GetApplicationHome(). | |
626 */ | |
627 | |
628 { char *arch = (char *) ARCH; /* like sparc or sparcv9 */ | |
629 char *p; | |
630 | |
631 if (!GetJREPath(jrepath, so_jrepath, arch, JNI_FALSE) ) { | |
632 fprintf(stderr, "Error: could not find Java 2 Runtime Environment.\n"); | |
633 exit(2); | |
634 } | |
635 | |
636 if (!GetJVMPath(jrepath, NULL, jvmpath, so_jvmpath, arch )) { | |
637 fprintf(stderr, "Error: no JVM at `%s'.\n", jvmpath); | |
638 exit(4); | |
639 } | |
640 } | |
641 | |
642 #endif /* ifndef GAMMA */ | |
643 } | |
644 | |
645 | |
646 /* | |
647 * On Solaris VM choosing is done by the launcher (java.c). | |
648 */ | |
649 static jboolean | |
650 GetJVMPath(const char *jrepath, const char *jvmtype, | |
651 char *jvmpath, jint jvmpathsize, char * arch) | |
652 { | |
653 struct stat s; | |
654 | |
655 #ifndef GAMMA | |
656 if (strchr(jvmtype, '/')) { | |
657 sprintf(jvmpath, "%s/" JVM_DLL, jvmtype); | |
658 } else { | |
659 sprintf(jvmpath, "%s/lib/%s/%s/" JVM_DLL, jrepath, arch, jvmtype); | |
660 } | |
661 #else | |
662 /* | |
663 * For gamma launcher, JVM is either built-in or in the same directory. | |
664 * Either way we return "<exe_path>/libjvm.so" where <exe_path> is the | |
665 * directory where gamma launcher is located. | |
666 */ | |
667 | |
668 char *p; | |
669 | |
670 snprintf(jvmpath, jvmpathsize, "%s", GetExecname()); | |
671 p = strrchr(jvmpath, '/'); | |
672 if (p) { | |
673 /* replace executable name with libjvm.so */ | |
674 snprintf(p + 1, jvmpathsize - (p + 1 - jvmpath), "%s", JVM_DLL); | |
675 } else { | |
676 /* this case shouldn't happen */ | |
677 snprintf(jvmpath, jvmpathsize, "%s", JVM_DLL); | |
678 } | |
679 #endif /* ifndef GAMMA */ | |
680 | |
681 if (_launcher_debug) | |
682 printf("Does `%s' exist ... ", jvmpath); | |
683 | |
684 if (stat(jvmpath, &s) == 0) { | |
685 if (_launcher_debug) | |
686 printf("yes.\n"); | |
687 return JNI_TRUE; | |
688 } else { | |
689 if (_launcher_debug) | |
690 printf("no.\n"); | |
691 return JNI_FALSE; | |
692 } | |
693 } | |
694 | |
695 /* | |
696 * Find path to JRE based on .exe's location or registry settings. | |
697 */ | |
698 static jboolean | |
699 GetJREPath(char *path, jint pathsize, char * arch, jboolean speculative) | |
700 { | |
701 char libjava[MAXPATHLEN]; | |
702 | |
703 if (GetApplicationHome(path, pathsize)) { | |
4846 | 704 |
705 /* Is the JRE universal, i.e. no arch dir? */ | |
706 sprintf(libjava, "%s/jre/lib/" JAVA_DLL, path); | |
707 if (access(libjava, F_OK) == 0) { | |
708 strcat(path, "/jre"); | |
709 goto found; | |
710 } | |
711 | |
1985 | 712 /* Is JRE co-located with the application? */ |
713 sprintf(libjava, "%s/lib/%s/" JAVA_DLL, path, arch); | |
714 if (access(libjava, F_OK) == 0) { | |
715 goto found; | |
716 } | |
717 | |
718 /* Does the app ship a private JRE in <apphome>/jre directory? */ | |
719 sprintf(libjava, "%s/jre/lib/%s/" JAVA_DLL, path, arch); | |
720 if (access(libjava, F_OK) == 0) { | |
721 strcat(path, "/jre"); | |
722 goto found; | |
723 } | |
724 } | |
725 | |
726 if (!speculative) | |
727 fprintf(stderr, "Error: could not find " JAVA_DLL "\n"); | |
728 return JNI_FALSE; | |
729 | |
730 found: | |
731 if (_launcher_debug) | |
732 printf("JRE path is %s\n", path); | |
733 return JNI_TRUE; | |
734 } | |
735 | |
736 jboolean | |
737 LoadJavaVM(const char *jvmpath, InvocationFunctions *ifn) | |
738 { | |
739 #ifdef GAMMA | |
740 /* JVM is directly linked with gamma launcher; no dlopen() */ | |
741 ifn->CreateJavaVM = JNI_CreateJavaVM; | |
742 ifn->GetDefaultJavaVMInitArgs = JNI_GetDefaultJavaVMInitArgs; | |
743 return JNI_TRUE; | |
744 #else | |
4846 | 745 Dl_info dlinfo; |
1985 | 746 void *libjvm; |
747 | |
748 if (_launcher_debug) { | |
749 printf("JVM path is %s\n", jvmpath); | |
750 } | |
751 | |
752 libjvm = dlopen(jvmpath, RTLD_NOW + RTLD_GLOBAL); | |
753 if (libjvm == NULL) { | |
754 #if defined(__sparc) && !defined(_LP64) /* i.e. 32-bit sparc */ | |
755 FILE * fp; | |
756 Elf32_Ehdr elf_head; | |
757 int count; | |
758 int location; | |
759 | |
760 fp = fopen(jvmpath, "r"); | |
761 if(fp == NULL) | |
762 goto error; | |
763 | |
764 /* read in elf header */ | |
765 count = fread((void*)(&elf_head), sizeof(Elf32_Ehdr), 1, fp); | |
766 fclose(fp); | |
767 if(count < 1) | |
768 goto error; | |
769 | |
770 /* | |
771 * Check for running a server vm (compiled with -xarch=v8plus) | |
772 * on a stock v8 processor. In this case, the machine type in | |
773 * the elf header would not be included the architecture list | |
774 * provided by the isalist command, which is turn is gotten from | |
775 * sysinfo. This case cannot occur on 64-bit hardware and thus | |
776 * does not have to be checked for in binaries with an LP64 data | |
777 * model. | |
778 */ | |
779 if(elf_head.e_machine == EM_SPARC32PLUS) { | |
780 char buf[257]; /* recommended buffer size from sysinfo man | |
781 page */ | |
782 long length; | |
783 char* location; | |
784 | |
785 length = sysinfo(SI_ISALIST, buf, 257); | |
786 if(length > 0) { | |
787 location = strstr(buf, "sparcv8plus "); | |
788 if(location == NULL) { | |
789 fprintf(stderr, "SPARC V8 processor detected; Server compiler requires V9 or better.\n"); | |
790 fprintf(stderr, "Use Client compiler on V8 processors.\n"); | |
791 fprintf(stderr, "Could not create the Java virtual machine.\n"); | |
792 return JNI_FALSE; | |
793 } | |
794 } | |
795 } | |
796 #endif | |
797 fprintf(stderr, "dl failure on line %d", __LINE__); | |
798 goto error; | |
799 } | |
800 | |
801 ifn->CreateJavaVM = (CreateJavaVM_t) | |
802 dlsym(libjvm, "JNI_CreateJavaVM"); | |
803 if (ifn->CreateJavaVM == NULL) | |
804 goto error; | |
805 | |
806 ifn->GetDefaultJavaVMInitArgs = (GetDefaultJavaVMInitArgs_t) | |
807 dlsym(libjvm, "JNI_GetDefaultJavaVMInitArgs"); | |
808 if (ifn->GetDefaultJavaVMInitArgs == NULL) | |
809 goto error; | |
810 | |
811 return JNI_TRUE; | |
812 | |
813 error: | |
814 fprintf(stderr, "Error: failed %s, because %s\n", jvmpath, dlerror()); | |
815 return JNI_FALSE; | |
816 #endif /* ifndef GAMMA */ | |
817 } | |
818 | |
819 /* | |
820 * If app is "/foo/bin/javac", or "/foo/bin/sparcv9/javac" then put | |
821 * "/foo" into buf. | |
822 */ | |
823 jboolean | |
824 GetApplicationHome(char *buf, jint bufsize) | |
825 { | |
3960 | 826 #if defined(__linux__) || defined(_ALLBSD_SOURCE) |
1985 | 827 char *execname = GetExecname(); |
828 if (execname) { | |
829 strncpy(buf, execname, bufsize-1); | |
830 buf[bufsize-1] = '\0'; | |
831 } else { | |
832 return JNI_FALSE; | |
833 } | |
834 #else | |
835 Dl_info dlinfo; | |
836 | |
837 dladdr((void *)GetApplicationHome, &dlinfo); | |
838 if (realpath(dlinfo.dli_fname, buf) == NULL) { | |
839 fprintf(stderr, "Error: realpath(`%s') failed.\n", dlinfo.dli_fname); | |
840 return JNI_FALSE; | |
841 } | |
842 #endif | |
843 | |
844 #ifdef GAMMA | |
845 { | |
2027
aa6e219afbf1
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sla
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diff
changeset
|
846 /* gamma launcher uses JAVA_HOME environment variable to find JDK/JRE */ |
aa6e219afbf1
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diff
changeset
|
847 char* java_home_var = getenv("JAVA_HOME"); |
1985 | 848 if (java_home_var == NULL) { |
2027
aa6e219afbf1
7006354: Updates to Visual Studio project creation and development launcher
sla
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diff
changeset
|
849 printf("JAVA_HOME must point to a valid JDK/JRE to run gamma\n"); |
1985 | 850 return JNI_FALSE; |
851 } | |
852 snprintf(buf, bufsize, "%s", java_home_var); | |
853 } | |
854 #else | |
855 if (strrchr(buf, '/') == 0) { | |
856 buf[0] = '\0'; | |
857 return JNI_FALSE; | |
858 } | |
859 *(strrchr(buf, '/')) = '\0'; /* executable file */ | |
860 if (strlen(buf) < 4 || strrchr(buf, '/') == 0) { | |
861 buf[0] = '\0'; | |
862 return JNI_FALSE; | |
863 } | |
864 if (strcmp("/bin", buf + strlen(buf) - 4) != 0) | |
865 *(strrchr(buf, '/')) = '\0'; /* sparcv9 or amd64 */ | |
866 if (strlen(buf) < 4 || strcmp("/bin", buf + strlen(buf) - 4) != 0) { | |
867 buf[0] = '\0'; | |
868 return JNI_FALSE; | |
869 } | |
870 *(strrchr(buf, '/')) = '\0'; /* bin */ | |
871 #endif /* ifndef GAMMA */ | |
872 | |
873 return JNI_TRUE; | |
874 } | |
875 | |
876 | |
877 /* | |
878 * Return true if the named program exists | |
879 */ | |
880 static int | |
881 ProgramExists(char *name) | |
882 { | |
883 struct stat sb; | |
884 if (stat(name, &sb) != 0) return 0; | |
885 if (S_ISDIR(sb.st_mode)) return 0; | |
886 return (sb.st_mode & S_IEXEC) != 0; | |
887 } | |
888 | |
889 | |
890 /* | |
891 * Find a command in a directory, returning the path. | |
892 */ | |
893 static char * | |
894 Resolve(char *indir, char *cmd) | |
895 { | |
896 char name[PATH_MAX + 2], *real; | |
897 | |
898 if ((strlen(indir) + strlen(cmd) + 1) > PATH_MAX) return 0; | |
899 sprintf(name, "%s%c%s", indir, FILE_SEPARATOR, cmd); | |
900 if (!ProgramExists(name)) return 0; | |
901 real = JLI_MemAlloc(PATH_MAX + 2); | |
902 if (!realpath(name, real)) | |
903 strcpy(real, name); | |
904 return real; | |
905 } | |
906 | |
907 | |
908 /* | |
909 * Find a path for the executable | |
910 */ | |
911 static char * | |
912 FindExecName(char *program) | |
913 { | |
914 char cwdbuf[PATH_MAX+2]; | |
915 char *path; | |
916 char *tmp_path; | |
917 char *f; | |
918 char *result = NULL; | |
919 | |
920 /* absolute path? */ | |
921 if (*program == FILE_SEPARATOR || | |
922 (FILE_SEPARATOR=='\\' && strrchr(program, ':'))) | |
923 return Resolve("", program+1); | |
924 | |
925 /* relative path? */ | |
926 if (strrchr(program, FILE_SEPARATOR) != 0) { | |
927 char buf[PATH_MAX+2]; | |
928 return Resolve(getcwd(cwdbuf, sizeof(cwdbuf)), program); | |
929 } | |
930 | |
931 /* from search path? */ | |
932 path = getenv("PATH"); | |
933 if (!path || !*path) path = "."; | |
934 tmp_path = JLI_MemAlloc(strlen(path) + 2); | |
935 strcpy(tmp_path, path); | |
936 | |
937 for (f=tmp_path; *f && result==0; ) { | |
938 char *s = f; | |
939 while (*f && (*f != PATH_SEPARATOR)) ++f; | |
940 if (*f) *f++ = 0; | |
941 if (*s == FILE_SEPARATOR) | |
942 result = Resolve(s, program); | |
943 else { | |
944 /* relative path element */ | |
945 char dir[2*PATH_MAX]; | |
946 sprintf(dir, "%s%c%s", getcwd(cwdbuf, sizeof(cwdbuf)), | |
947 FILE_SEPARATOR, s); | |
948 result = Resolve(dir, program); | |
949 } | |
950 if (result != 0) break; | |
951 } | |
952 | |
953 JLI_MemFree(tmp_path); | |
954 return result; | |
955 } | |
956 | |
957 | |
958 /* Store the name of the executable once computed */ | |
959 static char *execname = NULL; | |
960 | |
961 /* | |
962 * Compute the name of the executable | |
963 * | |
964 * In order to re-exec securely we need the absolute path of the | |
965 * executable. On Solaris getexecname(3c) may not return an absolute | |
966 * path so we use dladdr to get the filename of the executable and | |
967 * then use realpath to derive an absolute path. From Solaris 9 | |
968 * onwards the filename returned in DL_info structure from dladdr is | |
969 * an absolute pathname so technically realpath isn't required. | |
970 * On Linux we read the executable name from /proc/self/exe. | |
971 * As a fallback, and for platforms other than Solaris and Linux, | |
972 * we use FindExecName to compute the executable name. | |
973 */ | |
974 static char * | |
975 SetExecname(char **argv) | |
976 { | |
977 char* exec_path = NULL; | |
978 | |
979 if (execname != NULL) /* Already determined */ | |
980 return (execname); | |
981 | |
982 #if defined(__sun) | |
983 { | |
984 Dl_info dlinfo; | |
985 if (dladdr((void*)&SetExecname, &dlinfo)) { | |
986 char *resolved = (char*)JLI_MemAlloc(PATH_MAX+1); | |
987 if (resolved != NULL) { | |
988 exec_path = realpath(dlinfo.dli_fname, resolved); | |
989 if (exec_path == NULL) { | |
990 JLI_MemFree(resolved); | |
991 } | |
992 } | |
993 } | |
994 } | |
995 #elif defined(__linux__) | |
996 { | |
997 const char* self = "/proc/self/exe"; | |
998 char buf[PATH_MAX+1]; | |
999 int len = readlink(self, buf, PATH_MAX); | |
1000 if (len >= 0) { | |
1001 buf[len] = '\0'; /* readlink doesn't nul terminate */ | |
1002 exec_path = JLI_StringDup(buf); | |
1003 } | |
1004 } | |
1005 #else /* !__sun && !__linux */ | |
1006 { | |
1007 /* Not implemented */ | |
1008 } | |
1009 #endif | |
1010 | |
1011 if (exec_path == NULL) { | |
1012 exec_path = FindExecName(argv[0]); | |
1013 } | |
1014 execname = exec_path; | |
1015 return exec_path; | |
1016 } | |
1017 | |
1018 /* | |
1019 * Return the name of the executable. Used in java_md.c to find the JRE area. | |
1020 */ | |
1021 static char * | |
1022 GetExecname() { | |
1023 return execname; | |
1024 } | |
1025 | |
1026 void ReportErrorMessage(char * message, jboolean always) { | |
1027 if (always) { | |
1028 fprintf(stderr, "%s\n", message); | |
1029 } | |
1030 } | |
1031 | |
1032 void ReportErrorMessage2(char * format, char * string, jboolean always) { | |
1033 if (always) { | |
1034 fprintf(stderr, format, string); | |
1035 fprintf(stderr, "\n"); | |
1036 } | |
1037 } | |
1038 | |
1039 void ReportExceptionDescription(JNIEnv * env) { | |
1040 (*env)->ExceptionDescribe(env); | |
1041 } | |
1042 | |
1043 /* | |
1044 * Return JNI_TRUE for an option string that has no effect but should | |
1045 * _not_ be passed on to the vm; return JNI_FALSE otherwise. On | |
1046 * Solaris SPARC, this screening needs to be done if: | |
1047 * 1) LD_LIBRARY_PATH does _not_ need to be reset and | |
1048 * 2) -d32 or -d64 is passed to a binary with a matching data model | |
1049 * (the exec in SetLibraryPath removes -d<n> options and points the | |
1050 * exec to the proper binary). When this exec is not done, these options | |
1051 * would end up getting passed onto the vm. | |
1052 */ | |
1053 jboolean RemovableMachineDependentOption(char * option) { | |
1054 /* | |
1055 * Unconditionally remove both -d32 and -d64 options since only | |
1056 * the last such options has an effect; e.g. | |
1057 * java -d32 -d64 -d32 -version | |
1058 * is equivalent to | |
1059 * java -d32 -version | |
1060 */ | |
1061 | |
1062 if( (strcmp(option, "-d32") == 0 ) || | |
1063 (strcmp(option, "-d64") == 0 )) | |
1064 return JNI_TRUE; | |
1065 else | |
1066 return JNI_FALSE; | |
1067 } | |
1068 | |
1069 void PrintMachineDependentOptions() { | |
1070 fprintf(stdout, | |
1071 " -d32 use a 32-bit data model if available\n" | |
1072 "\n" | |
1073 " -d64 use a 64-bit data model if available\n"); | |
1074 return; | |
1075 } | |
1076 | |
1077 #ifndef GAMMA | |
1078 /* | |
1079 * The following methods (down to ServerClassMachine()) answer | |
1080 * the question about whether a machine is a "server-class" | |
1081 * machine. A server-class machine is loosely defined as one | |
1082 * with 2 or more processors and 2 gigabytes or more physical | |
1083 * memory. The definition of a processor is a physical package, | |
1084 * not a hyperthreaded chip masquerading as a multi-processor. | |
1085 * The definition of memory is also somewhat fuzzy, since x86 | |
1086 * machines seem not to report all the memory in their DIMMs, we | |
1087 * think because of memory mapping of graphics cards, etc. | |
1088 * | |
1089 * This code is somewhat more confused with #ifdef's than we'd | |
1090 * like because this file is used by both Solaris and Linux | |
1091 * platforms, and so needs to be parameterized for SPARC and | |
1092 * i586 hardware. The other Linux platforms (amd64 and ia64) | |
1093 * don't even ask this question, because they only come with | |
1094 * server JVMs. */ | |
1095 | |
1096 # define KB (1024UL) | |
1097 # define MB (1024UL * KB) | |
1098 # define GB (1024UL * MB) | |
1099 | |
1100 /* Compute physical memory by asking the OS */ | |
1101 uint64_t | |
1102 physical_memory(void) { | |
1103 const uint64_t pages = (uint64_t) sysconf(_SC_PHYS_PAGES); | |
1104 const uint64_t page_size = (uint64_t) sysconf(_SC_PAGESIZE); | |
1105 const uint64_t result = pages * page_size; | |
1106 # define UINT64_FORMAT "%" PRIu64 | |
1107 | |
1108 if (_launcher_debug) { | |
1109 printf("pages: " UINT64_FORMAT | |
1110 " page_size: " UINT64_FORMAT | |
1111 " physical memory: " UINT64_FORMAT " (%.3fGB)\n", | |
1112 pages, page_size, result, result / (double) GB); | |
1113 } | |
1114 return result; | |
1115 } | |
1116 | |
1117 #if defined(__sun) && defined(__sparc) | |
1118 | |
1119 /* Methods for solaris-sparc: these are easy. */ | |
1120 | |
1121 /* Ask the OS how many processors there are. */ | |
1122 unsigned long | |
1123 physical_processors(void) { | |
1124 const unsigned long sys_processors = sysconf(_SC_NPROCESSORS_CONF); | |
1125 | |
1126 if (_launcher_debug) { | |
1127 printf("sysconf(_SC_NPROCESSORS_CONF): %lu\n", sys_processors); | |
1128 } | |
1129 return sys_processors; | |
1130 } | |
1131 | |
1132 /* The solaris-sparc version of the "server-class" predicate. */ | |
1133 jboolean | |
1134 solaris_sparc_ServerClassMachine(void) { | |
1135 jboolean result = JNI_FALSE; | |
1136 /* How big is a server class machine? */ | |
1137 const unsigned long server_processors = 2UL; | |
1138 const uint64_t server_memory = 2UL * GB; | |
1139 const uint64_t actual_memory = physical_memory(); | |
1140 | |
1141 /* Is this a server class machine? */ | |
1142 if (actual_memory >= server_memory) { | |
1143 const unsigned long actual_processors = physical_processors(); | |
1144 if (actual_processors >= server_processors) { | |
1145 result = JNI_TRUE; | |
1146 } | |
1147 } | |
1148 if (_launcher_debug) { | |
1149 printf("solaris_" LIBARCHNAME "_ServerClassMachine: %s\n", | |
1150 (result == JNI_TRUE ? "JNI_TRUE" : "JNI_FALSE")); | |
1151 } | |
1152 return result; | |
1153 } | |
1154 | |
1155 #endif /* __sun && __sparc */ | |
1156 | |
1157 #if defined(__sun) && defined(i586) | |
1158 | |
1159 /* | |
1160 * A utility method for asking the CPU about itself. | |
1161 * There's a corresponding version of linux-i586 | |
1162 * because the compilers are different. | |
1163 */ | |
1164 void | |
1165 get_cpuid(uint32_t arg, | |
1166 uint32_t* eaxp, | |
1167 uint32_t* ebxp, | |
1168 uint32_t* ecxp, | |
1169 uint32_t* edxp) { | |
1170 #ifdef _LP64 | |
1171 asm( | |
1172 /* rbx is a callee-saved register */ | |
1173 " movq %rbx, %r11 \n" | |
1174 /* rdx and rcx are 3rd and 4th argument registers */ | |
1175 " movq %rdx, %r10 \n" | |
1176 " movq %rcx, %r9 \n" | |
1177 " movl %edi, %eax \n" | |
1178 " cpuid \n" | |
1179 " movl %eax, (%rsi)\n" | |
1180 " movl %ebx, (%r10)\n" | |
1181 " movl %ecx, (%r9) \n" | |
1182 " movl %edx, (%r8) \n" | |
1183 /* Restore rbx */ | |
1184 " movq %r11, %rbx"); | |
1185 #else | |
1186 /* EBX is a callee-saved register */ | |
1187 asm(" pushl %ebx"); | |
1188 /* Need ESI for storing through arguments */ | |
1189 asm(" pushl %esi"); | |
1190 asm(" movl 8(%ebp), %eax \n" | |
1191 " cpuid \n" | |
1192 " movl 12(%ebp), %esi \n" | |
1193 " movl %eax, (%esi) \n" | |
1194 " movl 16(%ebp), %esi \n" | |
1195 " movl %ebx, (%esi) \n" | |
1196 " movl 20(%ebp), %esi \n" | |
1197 " movl %ecx, (%esi) \n" | |
1198 " movl 24(%ebp), %esi \n" | |
1199 " movl %edx, (%esi) "); | |
1200 /* Restore ESI and EBX */ | |
1201 asm(" popl %esi"); | |
1202 /* Restore EBX */ | |
1203 asm(" popl %ebx"); | |
1204 #endif | |
1205 } | |
1206 | |
1207 #endif /* __sun && i586 */ | |
1208 | |
3960 | 1209 #if (defined(__linux__) || defined(_ALLBSD_SOURCE)) && defined(i586) |
1985 | 1210 |
1211 /* | |
1212 * A utility method for asking the CPU about itself. | |
1213 * There's a corresponding version of solaris-i586 | |
1214 * because the compilers are different. | |
1215 */ | |
1216 void | |
1217 get_cpuid(uint32_t arg, | |
1218 uint32_t* eaxp, | |
1219 uint32_t* ebxp, | |
1220 uint32_t* ecxp, | |
1221 uint32_t* edxp) { | |
1222 #ifdef _LP64 | |
1223 __asm__ volatile (/* Instructions */ | |
1224 " movl %4, %%eax \n" | |
1225 " cpuid \n" | |
1226 " movl %%eax, (%0)\n" | |
1227 " movl %%ebx, (%1)\n" | |
1228 " movl %%ecx, (%2)\n" | |
1229 " movl %%edx, (%3)\n" | |
1230 : /* Outputs */ | |
1231 : /* Inputs */ | |
1232 "r" (eaxp), | |
1233 "r" (ebxp), | |
1234 "r" (ecxp), | |
1235 "r" (edxp), | |
1236 "r" (arg) | |
1237 : /* Clobbers */ | |
1238 "%rax", "%rbx", "%rcx", "%rdx", "memory" | |
1239 ); | |
1240 #else | |
1241 uint32_t value_of_eax = 0; | |
1242 uint32_t value_of_ebx = 0; | |
1243 uint32_t value_of_ecx = 0; | |
1244 uint32_t value_of_edx = 0; | |
1245 __asm__ volatile (/* Instructions */ | |
1246 /* ebx is callee-save, so push it */ | |
1247 " pushl %%ebx \n" | |
1248 " movl %4, %%eax \n" | |
1249 " cpuid \n" | |
1250 " movl %%eax, %0 \n" | |
1251 " movl %%ebx, %1 \n" | |
1252 " movl %%ecx, %2 \n" | |
1253 " movl %%edx, %3 \n" | |
1254 /* restore ebx */ | |
1255 " popl %%ebx \n" | |
1256 | |
1257 : /* Outputs */ | |
1258 "=m" (value_of_eax), | |
1259 "=m" (value_of_ebx), | |
1260 "=m" (value_of_ecx), | |
1261 "=m" (value_of_edx) | |
1262 : /* Inputs */ | |
1263 "m" (arg) | |
1264 : /* Clobbers */ | |
1265 "%eax", "%ecx", "%edx" | |
1266 ); | |
1267 *eaxp = value_of_eax; | |
1268 *ebxp = value_of_ebx; | |
1269 *ecxp = value_of_ecx; | |
1270 *edxp = value_of_edx; | |
1271 #endif | |
1272 } | |
1273 | |
1274 #endif /* __linux__ && i586 */ | |
1275 | |
1276 #ifdef i586 | |
1277 /* | |
1278 * Routines shared by solaris-i586 and linux-i586. | |
1279 */ | |
1280 | |
1281 enum HyperThreadingSupport_enum { | |
1282 hts_supported = 1, | |
1283 hts_too_soon_to_tell = 0, | |
1284 hts_not_supported = -1, | |
1285 hts_not_pentium4 = -2, | |
1286 hts_not_intel = -3 | |
1287 }; | |
1288 typedef enum HyperThreadingSupport_enum HyperThreadingSupport; | |
1289 | |
1290 /* Determine if hyperthreading is supported */ | |
1291 HyperThreadingSupport | |
1292 hyperthreading_support(void) { | |
1293 HyperThreadingSupport result = hts_too_soon_to_tell; | |
1294 /* Bits 11 through 8 is family processor id */ | |
1295 # define FAMILY_ID_SHIFT 8 | |
1296 # define FAMILY_ID_MASK 0xf | |
1297 /* Bits 23 through 20 is extended family processor id */ | |
1298 # define EXT_FAMILY_ID_SHIFT 20 | |
1299 # define EXT_FAMILY_ID_MASK 0xf | |
1300 /* Pentium 4 family processor id */ | |
1301 # define PENTIUM4_FAMILY_ID 0xf | |
1302 /* Bit 28 indicates Hyper-Threading Technology support */ | |
1303 # define HT_BIT_SHIFT 28 | |
1304 # define HT_BIT_MASK 1 | |
1305 uint32_t vendor_id[3] = { 0U, 0U, 0U }; | |
1306 uint32_t value_of_eax = 0U; | |
1307 uint32_t value_of_edx = 0U; | |
1308 uint32_t dummy = 0U; | |
1309 | |
1310 /* Yes, this is supposed to be [0], [2], [1] */ | |
1311 get_cpuid(0, &dummy, &vendor_id[0], &vendor_id[2], &vendor_id[1]); | |
1312 if (_launcher_debug) { | |
1313 printf("vendor: %c %c %c %c %c %c %c %c %c %c %c %c \n", | |
1314 ((vendor_id[0] >> 0) & 0xff), | |
1315 ((vendor_id[0] >> 8) & 0xff), | |
1316 ((vendor_id[0] >> 16) & 0xff), | |
1317 ((vendor_id[0] >> 24) & 0xff), | |
1318 ((vendor_id[1] >> 0) & 0xff), | |
1319 ((vendor_id[1] >> 8) & 0xff), | |
1320 ((vendor_id[1] >> 16) & 0xff), | |
1321 ((vendor_id[1] >> 24) & 0xff), | |
1322 ((vendor_id[2] >> 0) & 0xff), | |
1323 ((vendor_id[2] >> 8) & 0xff), | |
1324 ((vendor_id[2] >> 16) & 0xff), | |
1325 ((vendor_id[2] >> 24) & 0xff)); | |
1326 } | |
1327 get_cpuid(1, &value_of_eax, &dummy, &dummy, &value_of_edx); | |
1328 if (_launcher_debug) { | |
1329 printf("value_of_eax: 0x%x value_of_edx: 0x%x\n", | |
1330 value_of_eax, value_of_edx); | |
1331 } | |
1332 if ((((value_of_eax >> FAMILY_ID_SHIFT) & FAMILY_ID_MASK) == PENTIUM4_FAMILY_ID) || | |
1333 (((value_of_eax >> EXT_FAMILY_ID_SHIFT) & EXT_FAMILY_ID_MASK) != 0)) { | |
1334 if ((((vendor_id[0] >> 0) & 0xff) == 'G') && | |
1335 (((vendor_id[0] >> 8) & 0xff) == 'e') && | |
1336 (((vendor_id[0] >> 16) & 0xff) == 'n') && | |
1337 (((vendor_id[0] >> 24) & 0xff) == 'u') && | |
1338 (((vendor_id[1] >> 0) & 0xff) == 'i') && | |
1339 (((vendor_id[1] >> 8) & 0xff) == 'n') && | |
1340 (((vendor_id[1] >> 16) & 0xff) == 'e') && | |
1341 (((vendor_id[1] >> 24) & 0xff) == 'I') && | |
1342 (((vendor_id[2] >> 0) & 0xff) == 'n') && | |
1343 (((vendor_id[2] >> 8) & 0xff) == 't') && | |
1344 (((vendor_id[2] >> 16) & 0xff) == 'e') && | |
1345 (((vendor_id[2] >> 24) & 0xff) == 'l')) { | |
1346 if (((value_of_edx >> HT_BIT_SHIFT) & HT_BIT_MASK) == HT_BIT_MASK) { | |
1347 if (_launcher_debug) { | |
1348 printf("Hyperthreading supported\n"); | |
1349 } | |
1350 result = hts_supported; | |
1351 } else { | |
1352 if (_launcher_debug) { | |
1353 printf("Hyperthreading not supported\n"); | |
1354 } | |
1355 result = hts_not_supported; | |
1356 } | |
1357 } else { | |
1358 if (_launcher_debug) { | |
1359 printf("Not GenuineIntel\n"); | |
1360 } | |
1361 result = hts_not_intel; | |
1362 } | |
1363 } else { | |
1364 if (_launcher_debug) { | |
1365 printf("not Pentium 4 or extended\n"); | |
1366 } | |
1367 result = hts_not_pentium4; | |
1368 } | |
1369 return result; | |
1370 } | |
1371 | |
1372 /* Determine how many logical processors there are per CPU */ | |
1373 unsigned int | |
1374 logical_processors_per_package(void) { | |
1375 /* | |
1376 * After CPUID with EAX==1, register EBX bits 23 through 16 | |
1377 * indicate the number of logical processors per package | |
1378 */ | |
1379 # define NUM_LOGICAL_SHIFT 16 | |
1380 # define NUM_LOGICAL_MASK 0xff | |
1381 unsigned int result = 1U; | |
1382 const HyperThreadingSupport hyperthreading = hyperthreading_support(); | |
1383 | |
1384 if (hyperthreading == hts_supported) { | |
1385 uint32_t value_of_ebx = 0U; | |
1386 uint32_t dummy = 0U; | |
1387 | |
1388 get_cpuid(1, &dummy, &value_of_ebx, &dummy, &dummy); | |
1389 result = (value_of_ebx >> NUM_LOGICAL_SHIFT) & NUM_LOGICAL_MASK; | |
1390 if (_launcher_debug) { | |
1391 printf("logical processors per package: %u\n", result); | |
1392 } | |
1393 } | |
1394 return result; | |
1395 } | |
1396 | |
1397 /* Compute the number of physical processors, not logical processors */ | |
1398 unsigned long | |
1399 physical_processors(void) { | |
1400 const long sys_processors = sysconf(_SC_NPROCESSORS_CONF); | |
1401 unsigned long result = sys_processors; | |
1402 | |
1403 if (_launcher_debug) { | |
1404 printf("sysconf(_SC_NPROCESSORS_CONF): %lu\n", sys_processors); | |
1405 } | |
1406 if (sys_processors > 1) { | |
1407 unsigned int logical_processors = logical_processors_per_package(); | |
1408 if (logical_processors > 1) { | |
1409 result = (unsigned long) sys_processors / logical_processors; | |
1410 } | |
1411 } | |
1412 if (_launcher_debug) { | |
1413 printf("physical processors: %lu\n", result); | |
1414 } | |
1415 return result; | |
1416 } | |
1417 | |
1418 #endif /* i586 */ | |
1419 | |
1420 #if defined(__sun) && defined(i586) | |
1421 | |
1422 /* The definition of a server-class machine for solaris-i586/amd64 */ | |
1423 jboolean | |
1424 solaris_i586_ServerClassMachine(void) { | |
1425 jboolean result = JNI_FALSE; | |
1426 /* How big is a server class machine? */ | |
1427 const unsigned long server_processors = 2UL; | |
1428 const uint64_t server_memory = 2UL * GB; | |
1429 /* | |
1430 * We seem not to get our full complement of memory. | |
1431 * We allow some part (1/8?) of the memory to be "missing", | |
1432 * based on the sizes of DIMMs, and maybe graphics cards. | |
1433 */ | |
1434 const uint64_t missing_memory = 256UL * MB; | |
1435 const uint64_t actual_memory = physical_memory(); | |
1436 | |
1437 /* Is this a server class machine? */ | |
1438 if (actual_memory >= (server_memory - missing_memory)) { | |
1439 const unsigned long actual_processors = physical_processors(); | |
1440 if (actual_processors >= server_processors) { | |
1441 result = JNI_TRUE; | |
1442 } | |
1443 } | |
1444 if (_launcher_debug) { | |
1445 printf("solaris_" LIBARCHNAME "_ServerClassMachine: %s\n", | |
1446 (result == JNI_TRUE ? "true" : "false")); | |
1447 } | |
1448 return result; | |
1449 } | |
1450 | |
1451 #endif /* __sun && i586 */ | |
1452 | |
1453 #if defined(__linux__) && defined(i586) | |
1454 | |
1455 /* The definition of a server-class machine for linux-i586 */ | |
1456 jboolean | |
1457 linux_i586_ServerClassMachine(void) { | |
1458 jboolean result = JNI_FALSE; | |
1459 /* How big is a server class machine? */ | |
1460 const unsigned long server_processors = 2UL; | |
1461 const uint64_t server_memory = 2UL * GB; | |
1462 /* | |
1463 * We seem not to get our full complement of memory. | |
1464 * We allow some part (1/8?) of the memory to be "missing", | |
1465 * based on the sizes of DIMMs, and maybe graphics cards. | |
1466 */ | |
1467 const uint64_t missing_memory = 256UL * MB; | |
1468 const uint64_t actual_memory = physical_memory(); | |
1469 | |
1470 /* Is this a server class machine? */ | |
1471 if (actual_memory >= (server_memory - missing_memory)) { | |
1472 const unsigned long actual_processors = physical_processors(); | |
1473 if (actual_processors >= server_processors) { | |
1474 result = JNI_TRUE; | |
1475 } | |
1476 } | |
1477 if (_launcher_debug) { | |
1478 printf("linux_" LIBARCHNAME "_ServerClassMachine: %s\n", | |
1479 (result == JNI_TRUE ? "true" : "false")); | |
1480 } | |
1481 return result; | |
1482 } | |
1483 | |
1484 #endif /* __linux__ && i586 */ | |
1485 | |
3960 | 1486 #if defined(_ALLBSD_SOURCE) && defined(i586) |
1487 | |
1488 /* The definition of a server-class machine for bsd-i586 */ | |
1489 jboolean | |
1490 bsd_i586_ServerClassMachine(void) { | |
1491 jboolean result = JNI_FALSE; | |
1492 /* How big is a server class machine? */ | |
1493 const unsigned long server_processors = 2UL; | |
1494 const uint64_t server_memory = 2UL * GB; | |
1495 /* | |
1496 * We seem not to get our full complement of memory. | |
1497 * We allow some part (1/8?) of the memory to be "missing", | |
1498 * based on the sizes of DIMMs, and maybe graphics cards. | |
1499 */ | |
1500 const uint64_t missing_memory = 256UL * MB; | |
1501 const uint64_t actual_memory = physical_memory(); | |
1502 | |
1503 /* Is this a server class machine? */ | |
1504 if (actual_memory >= (server_memory - missing_memory)) { | |
1505 const unsigned long actual_processors = physical_processors(); | |
1506 if (actual_processors >= server_processors) { | |
1507 result = JNI_TRUE; | |
1508 } | |
1509 } | |
1510 if (_launcher_debug) { | |
1511 printf("linux_" LIBARCHNAME "_ServerClassMachine: %s\n", | |
1512 (result == JNI_TRUE ? "true" : "false")); | |
1513 } | |
1514 return result; | |
1515 } | |
1516 | |
1517 #endif /* _ALLBSD_SOURCE && i586 */ | |
1518 | |
1985 | 1519 /* Dispatch to the platform-specific definition of "server-class" */ |
1520 jboolean | |
1521 ServerClassMachine(void) { | |
1522 jboolean result = JNI_FALSE; | |
1523 #if defined(NEVER_ACT_AS_SERVER_CLASS_MACHINE) | |
1524 result = JNI_FALSE; | |
1525 #elif defined(ALWAYS_ACT_AS_SERVER_CLASS_MACHINE) | |
1526 result = JNI_TRUE; | |
1527 #elif defined(__sun) && defined(__sparc) | |
1528 result = solaris_sparc_ServerClassMachine(); | |
1529 #elif defined(__sun) && defined(i586) | |
1530 result = solaris_i586_ServerClassMachine(); | |
1531 #elif defined(__linux__) && defined(i586) | |
1532 result = linux_i586_ServerClassMachine(); | |
3960 | 1533 #elif defined(_ALLBSD_SOURCE) && defined(i586) |
1534 result = bsd_i586_ServerClassMachine(); | |
1985 | 1535 #else |
1536 if (_launcher_debug) { | |
1537 printf("ServerClassMachine: returns default value of %s\n", | |
1538 (result == JNI_TRUE ? "true" : "false")); | |
1539 } | |
1540 #endif | |
1541 return result; | |
1542 } | |
1543 | |
1544 /* | |
1545 * Since using the file system as a registry is a bit risky, perform | |
1546 * additional sanity checks on the identified directory to validate | |
1547 * it as a valid jre/sdk. | |
1548 * | |
1549 * Return 0 if the tests fail; otherwise return non-zero (true). | |
1550 * | |
1551 * Note that checking for anything more than the existence of an | |
1552 * executable object at bin/java relative to the path being checked | |
1553 * will break the regression tests. | |
1554 */ | |
1555 static int | |
1556 CheckSanity(char *path, char *dir) | |
1557 { | |
1558 char buffer[PATH_MAX]; | |
1559 | |
1560 if (strlen(path) + strlen(dir) + 11 > PATH_MAX) | |
1561 return (0); /* Silently reject "impossibly" long paths */ | |
1562 | |
1563 (void)strcat(strcat(strcat(strcpy(buffer, path), "/"), dir), "/bin/java"); | |
1564 return ((access(buffer, X_OK) == 0) ? 1 : 0); | |
1565 } | |
1566 | |
1567 /* | |
1568 * Determine if there is an acceptable JRE in the directory dirname. | |
1569 * Upon locating the "best" one, return a fully qualified path to | |
1570 * it. "Best" is defined as the most advanced JRE meeting the | |
1571 * constraints contained in the manifest_info. If no JRE in this | |
1572 * directory meets the constraints, return NULL. | |
1573 * | |
1574 * Note that we don't check for errors in reading the directory | |
1575 * (which would be done by checking errno). This is because it | |
1576 * doesn't matter if we get an error reading the directory, or | |
1577 * we just don't find anything interesting in the directory. We | |
1578 * just return NULL in either case. | |
1579 * | |
1580 * The historical names of j2sdk and j2re were changed to jdk and | |
1581 * jre respecively as part of the 1.5 rebranding effort. Since the | |
1582 * former names are legacy on Linux, they must be recognized for | |
1583 * all time. Fortunately, this is a minor cost. | |
1584 */ | |
1585 static char | |
1586 *ProcessDir(manifest_info *info, char *dirname) | |
1587 { | |
1588 DIR *dirp; | |
1589 struct dirent *dp; | |
1590 char *best = NULL; | |
1591 int offset; | |
1592 int best_offset = 0; | |
1593 char *ret_str = NULL; | |
1594 char buffer[PATH_MAX]; | |
1595 | |
1596 if ((dirp = opendir(dirname)) == NULL) | |
1597 return (NULL); | |
1598 | |
1599 do { | |
1600 if ((dp = readdir(dirp)) != NULL) { | |
1601 offset = 0; | |
1602 if ((strncmp(dp->d_name, "jre", 3) == 0) || | |
1603 (strncmp(dp->d_name, "jdk", 3) == 0)) | |
1604 offset = 3; | |
1605 else if (strncmp(dp->d_name, "j2re", 4) == 0) | |
1606 offset = 4; | |
1607 else if (strncmp(dp->d_name, "j2sdk", 5) == 0) | |
1608 offset = 5; | |
1609 if (offset > 0) { | |
1610 if ((JLI_AcceptableRelease(dp->d_name + offset, | |
1611 info->jre_version)) && CheckSanity(dirname, dp->d_name)) | |
1612 if ((best == NULL) || (JLI_ExactVersionId( | |
1613 dp->d_name + offset, best + best_offset) > 0)) { | |
1614 if (best != NULL) | |
1615 JLI_MemFree(best); | |
1616 best = JLI_StringDup(dp->d_name); | |
1617 best_offset = offset; | |
1618 } | |
1619 } | |
1620 } | |
1621 } while (dp != NULL); | |
1622 (void) closedir(dirp); | |
1623 if (best == NULL) | |
1624 return (NULL); | |
1625 else { | |
1626 ret_str = JLI_MemAlloc(strlen(dirname) + strlen(best) + 2); | |
1627 ret_str = strcat(strcat(strcpy(ret_str, dirname), "/"), best); | |
1628 JLI_MemFree(best); | |
1629 return (ret_str); | |
1630 } | |
1631 } | |
1632 | |
1633 /* | |
1634 * This is the global entry point. It examines the host for the optimal | |
1635 * JRE to be used by scanning a set of directories. The set of directories | |
1636 * is platform dependent and can be overridden by the environment | |
1637 * variable JAVA_VERSION_PATH. | |
1638 * | |
1639 * This routine itself simply determines the set of appropriate | |
1640 * directories before passing control onto ProcessDir(). | |
1641 */ | |
1642 char* | |
1643 LocateJRE(manifest_info* info) | |
1644 { | |
1645 char *path; | |
1646 char *home; | |
1647 char *target = NULL; | |
1648 char *dp; | |
1649 char *cp; | |
1650 | |
1651 /* | |
1652 * Start by getting JAVA_VERSION_PATH | |
1653 */ | |
1654 if (info->jre_restrict_search) | |
1655 path = JLI_StringDup(system_dir); | |
1656 else if ((path = getenv("JAVA_VERSION_PATH")) != NULL) | |
1657 path = JLI_StringDup(path); | |
1658 else | |
1659 if ((home = getenv("HOME")) != NULL) { | |
1660 path = (char *)JLI_MemAlloc(strlen(home) + strlen(system_dir) + | |
1661 strlen(user_dir) + 2); | |
1662 path = strcat(strcat(strcat(strcpy(path, home), | |
1663 user_dir), ":"), system_dir); | |
1664 } else | |
1665 path = JLI_StringDup(system_dir); | |
1666 | |
1667 /* | |
1668 * Step through each directory on the path. Terminate the scan with | |
1669 * the first directory with an acceptable JRE. | |
1670 */ | |
1671 cp = dp = path; | |
1672 while (dp != NULL) { | |
1673 cp = strchr(dp, (int)':'); | |
1674 if (cp != NULL) | |
1675 *cp = (char)NULL; | |
1676 if ((target = ProcessDir(info, dp)) != NULL) | |
1677 break; | |
1678 dp = cp; | |
1679 if (dp != NULL) | |
1680 dp++; | |
1681 } | |
1682 JLI_MemFree(path); | |
1683 return (target); | |
1684 } | |
1685 | |
1686 /* | |
1687 * Given a path to a jre to execute, this routine checks if this process | |
1688 * is indeed that jre. If not, it exec's that jre. | |
1689 * | |
1690 * We want to actually check the paths rather than just the version string | |
1691 * built into the executable, so that given version specification (and | |
1692 * JAVA_VERSION_PATH) will yield the exact same Java environment, regardless | |
1693 * of the version of the arbitrary launcher we start with. | |
1694 */ | |
1695 void | |
1696 ExecJRE(char *jre, char **argv) | |
1697 { | |
1698 char wanted[PATH_MAX]; | |
1699 char *execname; | |
1700 char *progname; | |
1701 | |
1702 /* | |
1703 * Resolve the real path to the directory containing the selected JRE. | |
1704 */ | |
1705 if (realpath(jre, wanted) == NULL) { | |
1706 fprintf(stderr, "Unable to resolve %s\n", jre); | |
1707 exit(1); | |
1708 } | |
1709 | |
1710 /* | |
1711 * Resolve the real path to the currently running launcher. | |
1712 */ | |
1713 execname = SetExecname(argv); | |
1714 if (execname == NULL) { | |
1715 fprintf(stderr, "Unable to resolve current executable\n"); | |
1716 exit(1); | |
1717 } | |
1718 | |
1719 /* | |
1720 * If the path to the selected JRE directory is a match to the initial | |
1721 * portion of the path to the currently executing JRE, we have a winner! | |
1722 * If so, just return. | |
1723 */ | |
1724 if (strncmp(wanted, execname, strlen(wanted)) == 0) | |
1725 return; /* I am the droid you were looking for */ | |
1726 | |
1727 /* | |
1728 * If this isn't the selected version, exec the selected version. | |
1729 */ | |
1730 #ifdef JAVA_ARGS /* javac, jar and friends. */ | |
1731 progname = "java"; | |
1732 #else /* java, oldjava, javaw and friends */ | |
1733 #ifdef PROGNAME | |
1734 progname = PROGNAME; | |
1735 #else | |
1736 progname = *argv; | |
1737 if ((s = strrchr(progname, FILE_SEPARATOR)) != 0) { | |
1738 progname = s + 1; | |
1739 } | |
1740 #endif /* PROGNAME */ | |
1741 #endif /* JAVA_ARGS */ | |
1742 | |
1743 /* | |
1744 * This should never happen (because of the selection code in SelectJRE), | |
1745 * but check for "impossibly" long path names just because buffer overruns | |
1746 * can be so deadly. | |
1747 */ | |
1748 if (strlen(wanted) + strlen(progname) + 6 > PATH_MAX) { | |
1749 fprintf(stderr, "Path length exceeds maximum length (PATH_MAX)\n"); | |
1750 exit(1); | |
1751 } | |
1752 | |
1753 /* | |
1754 * Construct the path and exec it. | |
1755 */ | |
1756 (void)strcat(strcat(wanted, "/bin/"), progname); | |
1757 argv[0] = progname; | |
1758 if (_launcher_debug) { | |
1759 int i; | |
1760 printf("ReExec Command: %s (%s)\n", wanted, argv[0]); | |
1761 printf("ReExec Args:"); | |
1762 for (i = 1; argv[i] != NULL; i++) | |
1763 printf(" %s", argv[i]); | |
1764 printf("\n"); | |
1765 } | |
1766 (void)fflush(stdout); | |
1767 (void)fflush(stderr); | |
1768 execv(wanted, argv); | |
1769 perror("execv()"); | |
1770 fprintf(stderr, "Exec of %s failed\n", wanted); | |
1771 exit(1); | |
1772 } | |
1773 #endif /* ifndef GAMMA */ | |
1774 | |
1775 /* | |
1776 * "Borrowed" from Solaris 10 where the unsetenv() function is being added | |
1777 * to libc thanks to SUSv3 (Standard Unix Specification, version 3). As | |
1778 * such, in the fullness of time this will appear in libc on all relevant | |
1779 * Solaris/Linux platforms and maybe even the Windows platform. At that | |
1780 * time, this stub can be removed. | |
1781 * | |
1782 * This implementation removes the environment locking for multithreaded | |
1783 * applications. (We don't have access to these mutexes within libc and | |
1784 * the launcher isn't multithreaded.) Note that what remains is platform | |
1785 * independent, because it only relies on attributes that a POSIX environment | |
1786 * defines. | |
1787 * | |
1788 * Returns 0 on success, -1 on failure. | |
1789 * | |
1790 * Also removed was the setting of errno. The only value of errno set | |
1791 * was EINVAL ("Invalid Argument"). | |
1792 */ | |
1793 | |
1794 /* | |
1795 * s1(environ) is name=value | |
1796 * s2(name) is name(not the form of name=value). | |
1797 * if names match, return value of 1, else return 0 | |
1798 */ | |
1799 static int | |
1800 match_noeq(const char *s1, const char *s2) | |
1801 { | |
1802 while (*s1 == *s2++) { | |
1803 if (*s1++ == '=') | |
1804 return (1); | |
1805 } | |
1806 if (*s1 == '=' && s2[-1] == '\0') | |
1807 return (1); | |
1808 return (0); | |
1809 } | |
1810 | |
1811 /* | |
1812 * added for SUSv3 standard | |
1813 * | |
1814 * Delete entry from environ. | |
1815 * Do not free() memory! Other threads may be using it. | |
1816 * Keep it around forever. | |
1817 */ | |
1818 static int | |
1819 borrowed_unsetenv(const char *name) | |
1820 { | |
1821 long idx; /* index into environ */ | |
1822 | |
1823 if (name == NULL || *name == '\0' || | |
1824 strchr(name, '=') != NULL) { | |
1825 return (-1); | |
1826 } | |
1827 | |
1828 for (idx = 0; environ[idx] != NULL; idx++) { | |
1829 if (match_noeq(environ[idx], name)) | |
1830 break; | |
1831 } | |
1832 if (environ[idx] == NULL) { | |
1833 /* name not found but still a success */ | |
1834 return (0); | |
1835 } | |
1836 /* squeeze up one entry */ | |
1837 do { | |
1838 environ[idx] = environ[idx+1]; | |
1839 } while (environ[++idx] != NULL); | |
1840 | |
1841 return (0); | |
1842 } | |
1843 /* --- End of "borrowed" code --- */ | |
1844 | |
1845 /* | |
1846 * Wrapper for unsetenv() function. | |
1847 */ | |
1848 int | |
1849 UnsetEnv(char *name) | |
1850 { | |
1851 return(borrowed_unsetenv(name)); | |
1852 } | |
1853 | |
1854 /* --- Splash Screen shared library support --- */ | |
1855 | |
1856 static const char* SPLASHSCREEN_SO = "libsplashscreen.so"; | |
1857 | |
1858 static void* hSplashLib = NULL; | |
1859 | |
1860 void* SplashProcAddress(const char* name) { | |
1861 if (!hSplashLib) { | |
1862 hSplashLib = dlopen(SPLASHSCREEN_SO, RTLD_LAZY | RTLD_GLOBAL); | |
1863 } | |
1864 if (hSplashLib) { | |
1865 void* sym = dlsym(hSplashLib, name); | |
1866 return sym; | |
1867 } else { | |
1868 return NULL; | |
1869 } | |
1870 } | |
1871 | |
1872 void SplashFreeLibrary() { | |
1873 if (hSplashLib) { | |
1874 dlclose(hSplashLib); | |
1875 hSplashLib = NULL; | |
1876 } | |
1877 } | |
1878 | |
1879 /* | |
1880 * Block current thread and continue execution in a new thread | |
1881 */ | |
1882 int | |
1883 ContinueInNewThread(int (JNICALL *continuation)(void *), jlong stack_size, void * args) { | |
1884 int rslt; | |
3960 | 1885 #if defined(__linux__) || defined(_ALLBSD_SOURCE) |
1985 | 1886 pthread_t tid; |
1887 pthread_attr_t attr; | |
1888 pthread_attr_init(&attr); | |
1889 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE); | |
1890 | |
1891 if (stack_size > 0) { | |
1892 pthread_attr_setstacksize(&attr, stack_size); | |
1893 } | |
1894 | |
1895 if (pthread_create(&tid, &attr, (void *(*)(void*))continuation, (void*)args) == 0) { | |
1896 void * tmp; | |
1897 pthread_join(tid, &tmp); | |
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1898 rslt = (int)(intptr_t)tmp; |
1985 | 1899 } else { |
1900 /* | |
1901 * Continue execution in current thread if for some reason (e.g. out of | |
1902 * memory/LWP) a new thread can't be created. This will likely fail | |
1903 * later in continuation as JNI_CreateJavaVM needs to create quite a | |
1904 * few new threads, anyway, just give it a try.. | |
1905 */ | |
1906 rslt = continuation(args); | |
1907 } | |
1908 | |
1909 pthread_attr_destroy(&attr); | |
1910 #else | |
1911 thread_t tid; | |
1912 long flags = 0; | |
1913 if (thr_create(NULL, stack_size, (void *(*)(void *))continuation, args, flags, &tid) == 0) { | |
1914 void * tmp; | |
1915 thr_join(tid, NULL, &tmp); | |
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1916 rslt = (int)(intptr_t)tmp; |
1985 | 1917 } else { |
1918 /* See above. Continue in current thread if thr_create() failed */ | |
1919 rslt = continuation(args); | |
1920 } | |
1921 #endif | |
1922 return rslt; | |
1923 } | |
1924 | |
1925 /* Coarse estimation of number of digits assuming the worst case is a 64-bit pid. */ | |
1926 #define MAX_PID_STR_SZ 20 | |
1927 | |
1928 void SetJavaLauncherPlatformProps() { | |
1929 /* Linux only */ | |
1930 #ifdef __linux__ | |
1931 const char *substr = "-Dsun.java.launcher.pid="; | |
1932 char *pid_prop_str = (char *)JLI_MemAlloc(strlen(substr) + MAX_PID_STR_SZ + 1); | |
1933 sprintf(pid_prop_str, "%s%d", substr, getpid()); | |
1934 AddOption(pid_prop_str, NULL); | |
1935 #endif | |
1936 } |