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comparison src/os/windows/launcher/java_md.c @ 1985:cb2d0a362639

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6981484: Update development launcher Summary: Add new development launcher called hotspot(.exe) Reviewed-by: coleenp
author sla
date Thu, 02 Dec 2010 05:45:54 -0800
parents
children aa6e219afbf1
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1984:2968675b413e 1985:cb2d0a362639
1 /*
2 * Copyright (c) 1999, 2010, 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 <windows.h>
26 #include <io.h>
27 #include <process.h>
28 #include <stdlib.h>
29 #include <stdio.h>
30 #include <string.h>
31 #include <sys/types.h>
32 #include <sys/stat.h>
33
34 #include <jni.h>
35 #include "java.h"
36 #ifndef GAMMA
37 #include "version_comp.h"
38 #endif
39
40 #define JVM_DLL "jvm.dll"
41 #define JAVA_DLL "java.dll"
42 #define CRT_DLL "msvcr71.dll"
43
44 /*
45 * Prototypes.
46 */
47 static jboolean GetPublicJREHome(char *path, jint pathsize);
48 static jboolean GetJVMPath(const char *jrepath, const char *jvmtype,
49 char *jvmpath, jint jvmpathsize);
50 static jboolean GetJREPath(char *path, jint pathsize);
51 static void EnsureJreInstallation(const char *jrepath);
52
53 /* We supports warmup for UI stack that is performed in parallel
54 * to VM initialization.
55 * This helps to improve startup of UI application as warmup phase
56 * might be long due to initialization of OS or hardware resources.
57 * It is not CPU bound and therefore it does not interfere with VM init.
58 * Obviously such warmup only has sense for UI apps and therefore it needs
59 * to be explicitly requested by passing -Dsun.awt.warmup=true property
60 * (this is always the case for plugin/javaws).
61 *
62 * Implementation launches new thread after VM starts and use it to perform
63 * warmup code (platform dependent).
64 * This thread is later reused as AWT toolkit thread as graphics toolkit
65 * often assume that they are used from the same thread they were launched on.
66 *
67 * At the moment we only support warmup for D3D. It only possible on windows
68 * and only if other flags do not prohibit this (e.g. OpenGL support requested).
69 */
70 #undef ENABLE_AWT_PRELOAD
71 #ifndef JAVA_ARGS /* turn off AWT preloading for javac, jar, etc */
72 #ifdef _X86_ /* for now disable AWT preloading for 64bit */
73 #define ENABLE_AWT_PRELOAD
74 #endif
75 #endif
76
77 #ifdef ENABLE_AWT_PRELOAD
78 /* "AWT was preloaded" flag;
79 * Turned on by AWTPreload().
80 */
81 int awtPreloaded = 0;
82
83 /* Calls a function with the name specified.
84 * The function must be int(*fn)(void).
85 */
86 int AWTPreload(const char *funcName);
87 /* Stops AWT preloading. */
88 void AWTPreloadStop();
89
90 /* D3D preloading */
91 /* -1: not initialized; 0: OFF, 1: ON */
92 int awtPreloadD3D = -1;
93 /* Command line parameter to swith D3D preloading on. */
94 #define PARAM_PRELOAD_D3D "-Dsun.awt.warmup"
95 /* D3D/OpenGL management parameters (may disable D3D preloading) */
96 #define PARAM_NODDRAW "-Dsun.java2d.noddraw"
97 #define PARAM_D3D "-Dsun.java2d.d3d"
98 #define PARAM_OPENGL "-Dsun.java2d.opengl"
99 /* funtion in awt.dll (src/windows/native/sun/java2d/d3d/D3DPipelineManager.cpp) */
100 #define D3D_PRELOAD_FUNC "preloadD3D"
101
102
103 /* Extracts value of a parameter with the specified name
104 * from command line argument (returns pointer in the argument).
105 * Returns NULL if the argument does not contains the parameter.
106 * e.g.:
107 * GetParamValue("theParam", "theParam=value") returns pointer to "value".
108 */
109 const char * GetParamValue(const char *paramName, const char *arg) {
110 int nameLen = strlen(paramName);
111 if (strncmp(paramName, arg, nameLen) == 0) {
112 // arg[nameLen] is valid (may contain final NULL)
113 if (arg[nameLen] == '=') {
114 return arg + nameLen + 1;
115 }
116 }
117 return NULL;
118 }
119
120 /* Checks if commandline argument contains property specified
121 * and analyze it as boolean property (true/false).
122 * Returns -1 if the argument does not contain the parameter;
123 * Returns 1 if the argument contains the parameter and its value is "true";
124 * Returns 0 if the argument contains the parameter and its value is "false".
125 */
126 int GetBoolParamValue(const char *paramName, const char *arg) {
127 const char * paramValue = GetParamValue(paramName, arg);
128 if (paramValue != NULL) {
129 if (stricmp(paramValue, "true") == 0) {
130 return 1;
131 }
132 if (stricmp(paramValue, "false") == 0) {
133 return 0;
134 }
135 }
136 return -1;
137 }
138 #endif /* ENABLE_AWT_PRELOAD */
139
140
141 const char *
142 GetArch()
143 {
144
145 #ifdef _M_AMD64
146 return "amd64";
147 #elif defined(_M_IA64)
148 return "ia64";
149 #else
150 return "i386";
151 #endif
152 }
153
154 /*
155 *
156 */
157 void
158 CreateExecutionEnvironment(int *_argc,
159 char ***_argv,
160 char jrepath[],
161 jint so_jrepath,
162 char jvmpath[],
163 jint so_jvmpath,
164 char **original_argv) {
165 #ifndef GAMMA
166 char * jvmtype;
167
168 /* Find out where the JRE is that we will be using. */
169 if (!GetJREPath(jrepath, so_jrepath)) {
170 ReportErrorMessage("Error: could not find Java SE Runtime Environment.",
171 JNI_TRUE);
172 exit(2);
173 }
174
175 /* Do this before we read jvm.cfg */
176 EnsureJreInstallation(jrepath);
177
178 /* Find the specified JVM type */
179 if (ReadKnownVMs(jrepath, (char*)GetArch(), JNI_FALSE) < 1) {
180 ReportErrorMessage("Error: no known VMs. (check for corrupt jvm.cfg file)",
181 JNI_TRUE);
182 exit(1);
183 }
184 jvmtype = CheckJvmType(_argc, _argv, JNI_FALSE);
185
186 jvmpath[0] = '\0';
187 if (!GetJVMPath(jrepath, jvmtype, jvmpath, so_jvmpath)) {
188 char * message=NULL;
189 const char * format = "Error: no `%s' JVM at `%s'.";
190 message = (char *)JLI_MemAlloc((strlen(format)+strlen(jvmtype)+
191 strlen(jvmpath)) * sizeof(char));
192 sprintf(message,format, jvmtype, jvmpath);
193 ReportErrorMessage(message, JNI_TRUE);
194 exit(4);
195 }
196 /* If we got here, jvmpath has been correctly initialized. */
197
198 #else /* ifndef GAMMA */
199
200 /*
201 * gamma launcher is simpler in that it doesn't handle VM flavors, data
202 * model, etc. Assuming everything is set-up correctly
203 * all we need to do here is to return correct path names. See also
204 * GetJVMPath() and GetApplicationHome().
205 */
206
207 {
208 if (!GetJREPath(jrepath, so_jrepath) ) {
209 ReportErrorMessage("Error: could not find Java SE Runtime Environment.",
210 JNI_TRUE);
211 exit(2);
212 }
213
214 if (!GetJVMPath(jrepath, NULL, jvmpath, so_jvmpath)) {
215 char * message=NULL;
216 const char * format = "Error: no JVM at `%s'.";
217 message = (char *)JLI_MemAlloc((strlen(format)+
218 strlen(jvmpath)) * sizeof(char));
219 sprintf(message, format, jvmpath);
220 ReportErrorMessage(message, JNI_TRUE);
221 exit(4);
222 }
223 }
224
225 #endif /* ifndef GAMMA */
226
227 }
228
229
230 static jboolean
231 LoadMSVCRT()
232 {
233 // Only do this once
234 static int loaded = 0;
235 char crtpath[MAXPATHLEN];
236
237 if (!loaded) {
238 /*
239 * The Microsoft C Runtime Library needs to be loaded first. A copy is
240 * assumed to be present in the "JRE path" directory. If it is not found
241 * there (or "JRE path" fails to resolve), skip the explicit load and let
242 * nature take its course, which is likely to be a failure to execute.
243 */
244 if (GetJREPath(crtpath, MAXPATHLEN)) {
245 (void)strcat(crtpath, "\\bin\\" CRT_DLL); /* Add crt dll */
246 if (_launcher_debug) {
247 printf("CRT path is %s\n", crtpath);
248 }
249 if (_access(crtpath, 0) == 0) {
250 if (LoadLibrary(crtpath) == 0) {
251 ReportErrorMessage2("Error loading: %s", crtpath, JNI_TRUE);
252 return JNI_FALSE;
253 }
254 }
255 }
256 loaded = 1;
257 }
258 return JNI_TRUE;
259 }
260
261 /*
262 * The preJVMStart is a function in the jkernel.dll, which
263 * performs the final step of synthesizing back the decomposed
264 * modules (partial install) to the full JRE. Any tool which
265 * uses the JRE must peform this step to ensure the complete synthesis.
266 * The EnsureJreInstallation function calls preJVMStart based on
267 * the conditions outlined below, noting that the operation
268 * will fail silently if any of conditions are not met.
269 * NOTE: this call must be made before jvm.dll is loaded, or jvm.cfg
270 * is read, since jvm.cfg will be modified by the preJVMStart.
271 * 1. Are we on a supported platform.
272 * 2. Find the location of the JRE or the Kernel JRE.
273 * 3. check existence of JREHOME/lib/bundles
274 * 4. check jkernel.dll and invoke the entry-point
275 */
276 typedef VOID (WINAPI *PREJVMSTART)();
277
278 static void
279 EnsureJreInstallation(const char* jrepath)
280 {
281 HINSTANCE handle;
282 char tmpbuf[MAXPATHLEN];
283 PREJVMSTART PreJVMStart;
284 struct stat s;
285
286 /* 32 bit windows only please */
287 if (strcmp(GetArch(), "i386") != 0 ) {
288 if (_launcher_debug) {
289 printf("EnsureJreInstallation:unsupported platform\n");
290 }
291 return;
292 }
293 /* Does our bundle directory exist ? */
294 strcpy(tmpbuf, jrepath);
295 strcat(tmpbuf, "\\lib\\bundles");
296 if (stat(tmpbuf, &s) != 0) {
297 if (_launcher_debug) {
298 printf("EnsureJreInstallation:<%s>:not found\n", tmpbuf);
299 }
300 return;
301 }
302 /* Does our jkernel dll exist ? */
303 strcpy(tmpbuf, jrepath);
304 strcat(tmpbuf, "\\bin\\jkernel.dll");
305 if (stat(tmpbuf, &s) != 0) {
306 if (_launcher_debug) {
307 printf("EnsureJreInstallation:<%s>:not found\n", tmpbuf);
308 }
309 return;
310 }
311 /* The Microsoft C Runtime Library needs to be loaded first. */
312 if (!LoadMSVCRT()) {
313 if (_launcher_debug) {
314 printf("EnsureJreInstallation:could not load C runtime DLL\n");
315 }
316 return;
317 }
318 /* Load the jkernel.dll */
319 if ((handle = LoadLibrary(tmpbuf)) == 0) {
320 if (_launcher_debug) {
321 printf("EnsureJreInstallation:%s:load failed\n", tmpbuf);
322 }
323 return;
324 }
325 /* Get the function address */
326 PreJVMStart = (PREJVMSTART)GetProcAddress(handle, "preJVMStart");
327 if (PreJVMStart == NULL) {
328 if (_launcher_debug) {
329 printf("EnsureJreInstallation:preJVMStart:function lookup failed\n");
330 }
331 FreeLibrary(handle);
332 return;
333 }
334 PreJVMStart();
335 if (_launcher_debug) {
336 printf("EnsureJreInstallation:preJVMStart:called\n");
337 }
338 FreeLibrary(handle);
339 return;
340 }
341
342 /*
343 * Find path to JRE based on .exe's location or registry settings.
344 */
345 jboolean
346 GetJREPath(char *path, jint pathsize)
347 {
348 char javadll[MAXPATHLEN];
349 struct stat s;
350
351 if (GetApplicationHome(path, pathsize)) {
352 /* Is JRE co-located with the application? */
353 sprintf(javadll, "%s\\bin\\" JAVA_DLL, path);
354 if (stat(javadll, &s) == 0) {
355 goto found;
356 }
357
358 /* Does this app ship a private JRE in <apphome>\jre directory? */
359 sprintf(javadll, "%s\\jre\\bin\\" JAVA_DLL, path);
360 if (stat(javadll, &s) == 0) {
361 strcat(path, "\\jre");
362 goto found;
363 }
364 }
365
366 #ifndef GAMMA
367 /* Look for a public JRE on this machine. */
368 if (GetPublicJREHome(path, pathsize)) {
369 goto found;
370 }
371 #endif
372
373 fprintf(stderr, "Error: could not find " JAVA_DLL "\n");
374 return JNI_FALSE;
375
376 found:
377 if (_launcher_debug)
378 printf("JRE path is %s\n", path);
379 return JNI_TRUE;
380 }
381
382 /*
383 * Given a JRE location and a JVM type, construct what the name the
384 * JVM shared library will be. Return true, if such a library
385 * exists, false otherwise.
386 */
387 static jboolean
388 GetJVMPath(const char *jrepath, const char *jvmtype,
389 char *jvmpath, jint jvmpathsize)
390 {
391 struct stat s;
392
393 #ifndef GAMMA
394 if (strchr(jvmtype, '/') || strchr(jvmtype, '\\')) {
395 sprintf(jvmpath, "%s\\" JVM_DLL, jvmtype);
396 } else {
397 sprintf(jvmpath, "%s\\bin\\%s\\" JVM_DLL, jrepath, jvmtype);
398 }
399 #else
400 /*
401 * For gamma launcher, JVM is either built-in or in the same directory.
402 * Either way we return "<exe_path>/jvm.dll" where <exe_path> is the
403 * directory where gamma launcher is located.
404 */
405
406 char *p;
407 GetModuleFileName(0, jvmpath, jvmpathsize);
408
409 p = strrchr(jvmpath, '\\');
410 if (p) {
411 /* replace executable name with libjvm.so */
412 snprintf(p + 1, jvmpathsize - (p + 1 - jvmpath), "%s", JVM_DLL);
413 } else {
414 /* this case shouldn't happen */
415 snprintf(jvmpath, jvmpathsize, "%s", JVM_DLL);
416 }
417 #endif /* ifndef GAMMA */
418
419 if (stat(jvmpath, &s) == 0) {
420 return JNI_TRUE;
421 } else {
422 return JNI_FALSE;
423 }
424 }
425
426 /*
427 * Load a jvm from "jvmpath" and initialize the invocation functions.
428 */
429 jboolean
430 LoadJavaVM(const char *jvmpath, InvocationFunctions *ifn)
431 {
432 #ifdef GAMMA
433 /* JVM is directly linked with gamma launcher; no Loadlibrary() */
434 ifn->CreateJavaVM = JNI_CreateJavaVM;
435 ifn->GetDefaultJavaVMInitArgs = JNI_GetDefaultJavaVMInitArgs;
436 return JNI_TRUE;
437 #else
438 HINSTANCE handle;
439
440 if (_launcher_debug) {
441 printf("JVM path is %s\n", jvmpath);
442 }
443
444 /* The Microsoft C Runtime Library needs to be loaded first. */
445 LoadMSVCRT();
446
447 /* Load the Java VM DLL */
448 if ((handle = LoadLibrary(jvmpath)) == 0) {
449 ReportErrorMessage2("Error loading: %s", (char *)jvmpath, JNI_TRUE);
450 return JNI_FALSE;
451 }
452
453 /* Now get the function addresses */
454 ifn->CreateJavaVM =
455 (void *)GetProcAddress(handle, "JNI_CreateJavaVM");
456 ifn->GetDefaultJavaVMInitArgs =
457 (void *)GetProcAddress(handle, "JNI_GetDefaultJavaVMInitArgs");
458 if (ifn->CreateJavaVM == 0 || ifn->GetDefaultJavaVMInitArgs == 0) {
459 ReportErrorMessage2("Error: can't find JNI interfaces in: %s",
460 (char *)jvmpath, JNI_TRUE);
461 return JNI_FALSE;
462 }
463
464 return JNI_TRUE;
465 #endif /* ifndef GAMMA */
466 }
467
468 /*
469 * If app is "c:\foo\bin\javac", then put "c:\foo" into buf.
470 */
471 jboolean
472 GetApplicationHome(char *buf, jint bufsize)
473 {
474 #ifndef GAMMA
475 char *cp;
476 GetModuleFileName(0, buf, bufsize);
477 *strrchr(buf, '\\') = '\0'; /* remove .exe file name */
478 if ((cp = strrchr(buf, '\\')) == 0) {
479 /* This happens if the application is in a drive root, and
480 * there is no bin directory. */
481 buf[0] = '\0';
482 return JNI_FALSE;
483 }
484 *cp = '\0'; /* remove the bin\ part */
485 return JNI_TRUE;
486
487 #else /* ifndef GAMMA */
488
489 /* gamma launcher uses JAVA_HOME or ALT_JAVA_HOME environment variable to find JDK/JRE */
490 char* java_home_var = getenv("ALT_JAVA_HOME");
491 if (java_home_var == NULL) {
492 java_home_var = getenv("JAVA_HOME");
493 }
494 if (java_home_var == NULL) {
495 printf("JAVA_HOME or ALT_JAVA_HOME must point to a valid JDK/JRE to run gamma\n");
496 return JNI_FALSE;
497 }
498 snprintf(buf, bufsize, "%s", java_home_var);
499 return JNI_TRUE;
500 #endif /* ifndef GAMMA */
501 }
502
503 #ifdef JAVAW
504 __declspec(dllimport) char **__initenv;
505
506 int WINAPI
507 WinMain(HINSTANCE inst, HINSTANCE previnst, LPSTR cmdline, int cmdshow)
508 {
509 int ret;
510
511 __initenv = _environ;
512 ret = main(__argc, __argv);
513
514 return ret;
515 }
516 #endif
517
518 #ifndef GAMMA
519
520 /*
521 * Helpers to look in the registry for a public JRE.
522 */
523 /* Same for 1.5.0, 1.5.1, 1.5.2 etc. */
524 #define DOTRELEASE JDK_MAJOR_VERSION "." JDK_MINOR_VERSION
525 #define JRE_KEY "Software\\JavaSoft\\Java Runtime Environment"
526
527 static jboolean
528 GetStringFromRegistry(HKEY key, const char *name, char *buf, jint bufsize)
529 {
530 DWORD type, size;
531
532 if (RegQueryValueEx(key, name, 0, &type, 0, &size) == 0
533 && type == REG_SZ
534 && (size < (unsigned int)bufsize)) {
535 if (RegQueryValueEx(key, name, 0, 0, buf, &size) == 0) {
536 return JNI_TRUE;
537 }
538 }
539 return JNI_FALSE;
540 }
541
542 static jboolean
543 GetPublicJREHome(char *buf, jint bufsize)
544 {
545 HKEY key, subkey;
546 char version[MAXPATHLEN];
547
548 /*
549 * Note: There is a very similar implementation of the following
550 * registry reading code in the Windows java control panel (javacp.cpl).
551 * If there are bugs here, a similar bug probably exists there. Hence,
552 * changes here require inspection there.
553 */
554
555 /* Find the current version of the JRE */
556 if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, JRE_KEY, 0, KEY_READ, &key) != 0) {
557 fprintf(stderr, "Error opening registry key '" JRE_KEY "'\n");
558 return JNI_FALSE;
559 }
560
561 if (!GetStringFromRegistry(key, "CurrentVersion",
562 version, sizeof(version))) {
563 fprintf(stderr, "Failed reading value of registry key:\n\t"
564 JRE_KEY "\\CurrentVersion\n");
565 RegCloseKey(key);
566 return JNI_FALSE;
567 }
568
569 if (strcmp(version, DOTRELEASE) != 0) {
570 fprintf(stderr, "Registry key '" JRE_KEY "\\CurrentVersion'\nhas "
571 "value '%s', but '" DOTRELEASE "' is required.\n", version);
572 RegCloseKey(key);
573 return JNI_FALSE;
574 }
575
576 /* Find directory where the current version is installed. */
577 if (RegOpenKeyEx(key, version, 0, KEY_READ, &subkey) != 0) {
578 fprintf(stderr, "Error opening registry key '"
579 JRE_KEY "\\%s'\n", version);
580 RegCloseKey(key);
581 return JNI_FALSE;
582 }
583
584 if (!GetStringFromRegistry(subkey, "JavaHome", buf, bufsize)) {
585 fprintf(stderr, "Failed reading value of registry key:\n\t"
586 JRE_KEY "\\%s\\JavaHome\n", version);
587 RegCloseKey(key);
588 RegCloseKey(subkey);
589 return JNI_FALSE;
590 }
591
592 if (_launcher_debug) {
593 char micro[MAXPATHLEN];
594 if (!GetStringFromRegistry(subkey, "MicroVersion", micro,
595 sizeof(micro))) {
596 printf("Warning: Can't read MicroVersion\n");
597 micro[0] = '\0';
598 }
599 printf("Version major.minor.micro = %s.%s\n", version, micro);
600 }
601
602 RegCloseKey(key);
603 RegCloseKey(subkey);
604 return JNI_TRUE;
605 }
606
607 #endif /* ifndef GAMMA */
608
609 /*
610 * Support for doing cheap, accurate interval timing.
611 */
612 static jboolean counterAvailable = JNI_FALSE;
613 static jboolean counterInitialized = JNI_FALSE;
614 static LARGE_INTEGER counterFrequency;
615
616 jlong CounterGet()
617 {
618 LARGE_INTEGER count;
619
620 if (!counterInitialized) {
621 counterAvailable = QueryPerformanceFrequency(&counterFrequency);
622 counterInitialized = JNI_TRUE;
623 }
624 if (!counterAvailable) {
625 return 0;
626 }
627 QueryPerformanceCounter(&count);
628 return (jlong)(count.QuadPart);
629 }
630
631 jlong Counter2Micros(jlong counts)
632 {
633 if (!counterAvailable || !counterInitialized) {
634 return 0;
635 }
636 return (counts * 1000 * 1000)/counterFrequency.QuadPart;
637 }
638
639 void ReportErrorMessage(char * message, jboolean always) {
640 #ifdef JAVAW
641 if (message != NULL) {
642 MessageBox(NULL, message, "Java Virtual Machine Launcher",
643 (MB_OK|MB_ICONSTOP|MB_APPLMODAL));
644 }
645 #else
646 if (always) {
647 fprintf(stderr, "%s\n", message);
648 }
649 #endif
650 }
651
652 void ReportErrorMessage2(char * format, char * string, jboolean always) {
653 /*
654 * The format argument must be a printf format string with one %s
655 * argument, which is passed the string argument.
656 */
657 #ifdef JAVAW
658 size_t size;
659 char * message;
660 size = strlen(format) + strlen(string);
661 message = (char*)JLI_MemAlloc(size*sizeof(char));
662 sprintf(message, (const char *)format, string);
663
664 if (message != NULL) {
665 MessageBox(NULL, message, "Java Virtual Machine Launcher",
666 (MB_OK|MB_ICONSTOP|MB_APPLMODAL));
667 JLI_MemFree(message);
668 }
669 #else
670 if (always) {
671 fprintf(stderr, (const char *)format, string);
672 fprintf(stderr, "\n");
673 }
674 #endif
675 }
676
677 /*
678 * As ReportErrorMessage2 (above) except the system message (if any)
679 * associated with this error is written to a second %s format specifier
680 * in the format argument.
681 */
682 void ReportSysErrorMessage2(char * format, char * string, jboolean always) {
683 int save_errno = errno;
684 DWORD errval;
685 int freeit = 0;
686 char *errtext = NULL;
687
688 if ((errval = GetLastError()) != 0) { /* Platform SDK / DOS Error */
689 int n = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM|
690 FORMAT_MESSAGE_IGNORE_INSERTS|FORMAT_MESSAGE_ALLOCATE_BUFFER,
691 NULL, errval, 0, (LPTSTR)&errtext, 0, NULL);
692 if (errtext == NULL || n == 0) { /* Paranoia check */
693 errtext = "";
694 n = 0;
695 } else {
696 freeit = 1;
697 if (n > 2) { /* Drop final CR, LF */
698 if (errtext[n - 1] == '\n') n--;
699 if (errtext[n - 1] == '\r') n--;
700 errtext[n] = '\0';
701 }
702 }
703 } else /* C runtime error that has no corresponding DOS error code */
704 errtext = strerror(save_errno);
705
706 #ifdef JAVAW
707 {
708 size_t size;
709 char * message;
710 size = strlen(format) + strlen(string) + strlen(errtext);
711 message = (char*)JLI_MemAlloc(size*sizeof(char));
712 sprintf(message, (const char *)format, string, errtext);
713
714 if (message != NULL) {
715 MessageBox(NULL, message, "Java Virtual Machine Launcher",
716 (MB_OK|MB_ICONSTOP|MB_APPLMODAL));
717 JLI_MemFree(message);
718 }
719 }
720 #else
721 if (always) {
722 fprintf(stderr, (const char *)format, string, errtext);
723 fprintf(stderr, "\n");
724 }
725 #endif
726 if (freeit)
727 (void)LocalFree((HLOCAL)errtext);
728 }
729
730 void ReportExceptionDescription(JNIEnv * env) {
731 #ifdef JAVAW
732 /*
733 * This code should be replaced by code which opens a window with
734 * the exception detail message.
735 */
736 (*env)->ExceptionDescribe(env);
737 #else
738 (*env)->ExceptionDescribe(env);
739 #endif
740 }
741
742
743 /*
744 * Return JNI_TRUE for an option string that has no effect but should
745 * _not_ be passed on to the vm; return JNI_FALSE otherwise. On
746 * windows, there are no options that should be screened in this
747 * manner.
748 */
749 jboolean RemovableMachineDependentOption(char * option) {
750 #ifdef ENABLE_AWT_PRELOAD
751 if (awtPreloadD3D < 0) {
752 /* Tests the command line parameter only if not set yet. */
753 if (GetBoolParamValue(PARAM_PRELOAD_D3D, option) == 1) {
754 awtPreloadD3D = 1;
755 }
756 }
757 if (awtPreloadD3D != 0) {
758 /* Don't test the command line parameters if already disabled. */
759 if (GetBoolParamValue(PARAM_NODDRAW, option) == 1
760 || GetBoolParamValue(PARAM_D3D, option) == 0
761 || GetBoolParamValue(PARAM_OPENGL, option) == 1)
762 {
763 awtPreloadD3D = 0;
764 }
765 }
766 #endif /* ENABLE_AWT_PRELOAD */
767
768 return JNI_FALSE;
769 }
770
771 void PrintMachineDependentOptions() {
772 return;
773 }
774
775 #ifndef GAMMA
776
777 jboolean
778 ServerClassMachine() {
779 jboolean result = JNI_FALSE;
780 #if defined(NEVER_ACT_AS_SERVER_CLASS_MACHINE)
781 result = JNI_FALSE;
782 #elif defined(ALWAYS_ACT_AS_SERVER_CLASS_MACHINE)
783 result = JNI_TRUE;
784 #endif
785 return result;
786 }
787
788 /*
789 * Determine if there is an acceptable JRE in the registry directory top_key.
790 * Upon locating the "best" one, return a fully qualified path to it.
791 * "Best" is defined as the most advanced JRE meeting the constraints
792 * contained in the manifest_info. If no JRE in this directory meets the
793 * constraints, return NULL.
794 *
795 * It doesn't matter if we get an error reading the registry, or we just
796 * don't find anything interesting in the directory. We just return NULL
797 * in either case.
798 */
799 static char *
800 ProcessDir(manifest_info* info, HKEY top_key) {
801 DWORD index = 0;
802 HKEY ver_key;
803 char name[MAXNAMELEN];
804 int len;
805 char *best = NULL;
806
807 /*
808 * Enumerate "<top_key>/SOFTWARE/JavaSoft/Java Runtime Environment"
809 * searching for the best available version.
810 */
811 while (RegEnumKey(top_key, index, name, MAXNAMELEN) == ERROR_SUCCESS) {
812 index++;
813 if (JLI_AcceptableRelease(name, info->jre_version))
814 if ((best == NULL) || (JLI_ExactVersionId(name, best) > 0)) {
815 if (best != NULL)
816 JLI_MemFree(best);
817 best = JLI_StringDup(name);
818 }
819 }
820
821 /*
822 * Extract "JavaHome" from the "best" registry directory and return
823 * that path. If no appropriate version was located, or there is an
824 * error in extracting the "JavaHome" string, return null.
825 */
826 if (best == NULL)
827 return (NULL);
828 else {
829 if (RegOpenKeyEx(top_key, best, 0, KEY_READ, &ver_key)
830 != ERROR_SUCCESS) {
831 JLI_MemFree(best);
832 if (ver_key != NULL)
833 RegCloseKey(ver_key);
834 return (NULL);
835 }
836 JLI_MemFree(best);
837 len = MAXNAMELEN;
838 if (RegQueryValueEx(ver_key, "JavaHome", NULL, NULL, (LPBYTE)name, &len)
839 != ERROR_SUCCESS) {
840 if (ver_key != NULL)
841 RegCloseKey(ver_key);
842 return (NULL);
843 }
844 if (ver_key != NULL)
845 RegCloseKey(ver_key);
846 return (JLI_StringDup(name));
847 }
848 }
849
850 /*
851 * This is the global entry point. It examines the host for the optimal
852 * JRE to be used by scanning a set of registry entries. This set of entries
853 * is hardwired on Windows as "Software\JavaSoft\Java Runtime Environment"
854 * under the set of roots "{ HKEY_CURRENT_USER, HKEY_LOCAL_MACHINE }".
855 *
856 * This routine simply opens each of these registry directories before passing
857 * control onto ProcessDir().
858 */
859 char *
860 LocateJRE(manifest_info* info) {
861 HKEY key = NULL;
862 char *path;
863 int key_index;
864 HKEY root_keys[2] = { HKEY_CURRENT_USER, HKEY_LOCAL_MACHINE };
865
866 for (key_index = 0; key_index <= 1; key_index++) {
867 if (RegOpenKeyEx(root_keys[key_index], JRE_KEY, 0, KEY_READ, &key)
868 == ERROR_SUCCESS)
869 if ((path = ProcessDir(info, key)) != NULL) {
870 if (key != NULL)
871 RegCloseKey(key);
872 return (path);
873 }
874 if (key != NULL)
875 RegCloseKey(key);
876 }
877 return NULL;
878 }
879
880
881 /*
882 * Local helper routine to isolate a single token (option or argument)
883 * from the command line.
884 *
885 * This routine accepts a pointer to a character pointer. The first
886 * token (as defined by MSDN command-line argument syntax) is isolated
887 * from that string.
888 *
889 * Upon return, the input character pointer pointed to by the parameter s
890 * is updated to point to the remainding, unscanned, portion of the string,
891 * or to a null character if the entire string has been consummed.
892 *
893 * This function returns a pointer to a null-terminated string which
894 * contains the isolated first token, or to the null character if no
895 * token could be isolated.
896 *
897 * Note the side effect of modifying the input string s by the insertion
898 * of a null character, making it two strings.
899 *
900 * See "Parsing C Command-Line Arguments" in the MSDN Library for the
901 * parsing rule details. The rule summary from that specification is:
902 *
903 * * Arguments are delimited by white space, which is either a space or a tab.
904 *
905 * * A string surrounded by double quotation marks is interpreted as a single
906 * argument, regardless of white space contained within. A quoted string can
907 * be embedded in an argument. Note that the caret (^) is not recognized as
908 * an escape character or delimiter.
909 *
910 * * A double quotation mark preceded by a backslash, \", is interpreted as a
911 * literal double quotation mark (").
912 *
913 * * Backslashes are interpreted literally, unless they immediately precede a
914 * double quotation mark.
915 *
916 * * If an even number of backslashes is followed by a double quotation mark,
917 * then one backslash (\) is placed in the argv array for every pair of
918 * backslashes (\\), and the double quotation mark (") is interpreted as a
919 * string delimiter.
920 *
921 * * If an odd number of backslashes is followed by a double quotation mark,
922 * then one backslash (\) is placed in the argv array for every pair of
923 * backslashes (\\) and the double quotation mark is interpreted as an
924 * escape sequence by the remaining backslash, causing a literal double
925 * quotation mark (") to be placed in argv.
926 */
927 static char*
928 nextarg(char** s) {
929 char *p = *s;
930 char *head;
931 int slashes = 0;
932 int inquote = 0;
933
934 /*
935 * Strip leading whitespace, which MSDN defines as only space or tab.
936 * (Hence, no locale specific "isspace" here.)
937 */
938 while (*p != (char)0 && (*p == ' ' || *p == '\t'))
939 p++;
940 head = p; /* Save the start of the token to return */
941
942 /*
943 * Isolate a token from the command line.
944 */
945 while (*p != (char)0 && (inquote || !(*p == ' ' || *p == '\t'))) {
946 if (*p == '\\' && *(p+1) == '"' && slashes % 2 == 0)
947 p++;
948 else if (*p == '"')
949 inquote = !inquote;
950 slashes = (*p++ == '\\') ? slashes + 1 : 0;
951 }
952
953 /*
954 * If the token isolated isn't already terminated in a "char zero",
955 * then replace the whitespace character with one and move to the
956 * next character.
957 */
958 if (*p != (char)0)
959 *p++ = (char)0;
960
961 /*
962 * Update the parameter to point to the head of the remaining string
963 * reflecting the command line and return a pointer to the leading
964 * token which was isolated from the command line.
965 */
966 *s = p;
967 return (head);
968 }
969
970 /*
971 * Local helper routine to return a string equivalent to the input string
972 * s, but with quotes removed so the result is a string as would be found
973 * in argv[]. The returned string should be freed by a call to JLI_MemFree().
974 *
975 * The rules for quoting (and escaped quotes) are:
976 *
977 * 1 A double quotation mark preceded by a backslash, \", is interpreted as a
978 * literal double quotation mark (").
979 *
980 * 2 Backslashes are interpreted literally, unless they immediately precede a
981 * double quotation mark.
982 *
983 * 3 If an even number of backslashes is followed by a double quotation mark,
984 * then one backslash (\) is placed in the argv array for every pair of
985 * backslashes (\\), and the double quotation mark (") is interpreted as a
986 * string delimiter.
987 *
988 * 4 If an odd number of backslashes is followed by a double quotation mark,
989 * then one backslash (\) is placed in the argv array for every pair of
990 * backslashes (\\) and the double quotation mark is interpreted as an
991 * escape sequence by the remaining backslash, causing a literal double
992 * quotation mark (") to be placed in argv.
993 */
994 static char*
995 unquote(const char *s) {
996 const char *p = s; /* Pointer to the tail of the original string */
997 char *un = (char*)JLI_MemAlloc(strlen(s) + 1); /* Ptr to unquoted string */
998 char *pun = un; /* Pointer to the tail of the unquoted string */
999
1000 while (*p != '\0') {
1001 if (*p == '"') {
1002 p++;
1003 } else if (*p == '\\') {
1004 const char *q = p + strspn(p,"\\");
1005 if (*q == '"')
1006 do {
1007 *pun++ = '\\';
1008 p += 2;
1009 } while (*p == '\\' && p < q);
1010 else
1011 while (p < q)
1012 *pun++ = *p++;
1013 } else {
1014 *pun++ = *p++;
1015 }
1016 }
1017 *pun = '\0';
1018 return un;
1019 }
1020
1021 /*
1022 * Given a path to a jre to execute, this routine checks if this process
1023 * is indeed that jre. If not, it exec's that jre.
1024 *
1025 * We want to actually check the paths rather than just the version string
1026 * built into the executable, so that given version specification will yield
1027 * the exact same Java environment, regardless of the version of the arbitrary
1028 * launcher we start with.
1029 */
1030 void
1031 ExecJRE(char *jre, char **argv) {
1032 int len;
1033 char *progname;
1034 char path[MAXPATHLEN + 1];
1035
1036 /*
1037 * Determine the executable we are building (or in the rare case, running).
1038 */
1039 #ifdef JAVA_ARGS /* javac, jar and friends. */
1040 progname = "java";
1041 #else /* java, oldjava, javaw and friends */
1042 #ifdef PROGNAME
1043 progname = PROGNAME;
1044 #else
1045 {
1046 char *s;
1047 progname = *argv;
1048 if ((s = strrchr(progname, FILE_SEPARATOR)) != 0) {
1049 progname = s + 1;
1050 }
1051 }
1052 #endif /* PROGNAME */
1053 #endif /* JAVA_ARGS */
1054
1055 /*
1056 * Resolve the real path to the currently running launcher.
1057 */
1058 len = GetModuleFileName(NULL, path, MAXPATHLEN + 1);
1059 if (len == 0 || len > MAXPATHLEN) {
1060 ReportSysErrorMessage2(
1061 "Unable to resolve path to current %s executable: %s",
1062 progname, JNI_TRUE);
1063 exit(1);
1064 }
1065
1066 if (_launcher_debug) {
1067 printf("ExecJRE: old: %s\n", path);
1068 printf("ExecJRE: new: %s\n", jre);
1069 }
1070
1071 /*
1072 * If the path to the selected JRE directory is a match to the initial
1073 * portion of the path to the currently executing JRE, we have a winner!
1074 * If so, just return. (strnicmp() is the Windows equiv. of strncasecmp().)
1075 */
1076 if (strnicmp(jre, path, strlen(jre)) == 0)
1077 return; /* I am the droid you were looking for */
1078
1079 /*
1080 * If this isn't the selected version, exec the selected version.
1081 */
1082 (void)strcat(strcat(strcpy(path, jre), "\\bin\\"), progname);
1083 (void)strcat(path, ".exe");
1084
1085 /*
1086 * Although Windows has an execv() entrypoint, it doesn't actually
1087 * overlay a process: it can only create a new process and terminate
1088 * the old process. Therefore, any processes waiting on the initial
1089 * process wake up and they shouldn't. Hence, a chain of pseudo-zombie
1090 * processes must be retained to maintain the proper wait semantics.
1091 * Fortunately the image size of the launcher isn't too large at this
1092 * time.
1093 *
1094 * If it weren't for this semantic flaw, the code below would be ...
1095 *
1096 * execv(path, argv);
1097 * ReportErrorMessage2("Exec of %s failed\n", path, JNI_TRUE);
1098 * exit(1);
1099 *
1100 * The incorrect exec semantics could be addressed by:
1101 *
1102 * exit((int)spawnv(_P_WAIT, path, argv));
1103 *
1104 * Unfortunately, a bug in Windows spawn/exec impementation prevents
1105 * this from completely working. All the Windows POSIX process creation
1106 * interfaces are implemented as wrappers around the native Windows
1107 * function CreateProcess(). CreateProcess() takes a single string
1108 * to specify command line options and arguments, so the POSIX routine
1109 * wrappers build a single string from the argv[] array and in the
1110 * process, any quoting information is lost.
1111 *
1112 * The solution to this to get the original command line, to process it
1113 * to remove the new multiple JRE options (if any) as was done for argv
1114 * in the common SelectVersion() routine and finally to pass it directly
1115 * to the native CreateProcess() Windows process control interface.
1116 */
1117 {
1118 char *cmdline;
1119 char *p;
1120 char *np;
1121 char *ocl;
1122 char *ccl;
1123 char *unquoted;
1124 DWORD exitCode;
1125 STARTUPINFO si;
1126 PROCESS_INFORMATION pi;
1127
1128 /*
1129 * The following code block gets and processes the original command
1130 * line, replacing the argv[0] equivalent in the command line with
1131 * the path to the new executable and removing the appropriate
1132 * Multiple JRE support options. Note that similar logic exists
1133 * in the platform independent SelectVersion routine, but is
1134 * replicated here due to the syntax of CreateProcess().
1135 *
1136 * The magic "+ 4" characters added to the command line length are
1137 * 2 possible quotes around the path (argv[0]), a space after the
1138 * path and a terminating null character.
1139 */
1140 ocl = GetCommandLine();
1141 np = ccl = JLI_StringDup(ocl);
1142 p = nextarg(&np); /* Discard argv[0] */
1143 cmdline = (char *)JLI_MemAlloc(strlen(path) + strlen(np) + 4);
1144 if (strchr(path, (int)' ') == NULL && strchr(path, (int)'\t') == NULL)
1145 cmdline = strcpy(cmdline, path);
1146 else
1147 cmdline = strcat(strcat(strcpy(cmdline, "\""), path), "\"");
1148
1149 while (*np != (char)0) { /* While more command-line */
1150 p = nextarg(&np);
1151 if (*p != (char)0) { /* If a token was isolated */
1152 unquoted = unquote(p);
1153 if (*unquoted == '-') { /* Looks like an option */
1154 if (strcmp(unquoted, "-classpath") == 0 ||
1155 strcmp(unquoted, "-cp") == 0) { /* Unique cp syntax */
1156 cmdline = strcat(strcat(cmdline, " "), p);
1157 p = nextarg(&np);
1158 if (*p != (char)0) /* If a token was isolated */
1159 cmdline = strcat(strcat(cmdline, " "), p);
1160 } else if (strncmp(unquoted, "-version:", 9) != 0 &&
1161 strcmp(unquoted, "-jre-restrict-search") != 0 &&
1162 strcmp(unquoted, "-no-jre-restrict-search") != 0) {
1163 cmdline = strcat(strcat(cmdline, " "), p);
1164 }
1165 } else { /* End of options */
1166 cmdline = strcat(strcat(cmdline, " "), p);
1167 cmdline = strcat(strcat(cmdline, " "), np);
1168 JLI_MemFree((void *)unquoted);
1169 break;
1170 }
1171 JLI_MemFree((void *)unquoted);
1172 }
1173 }
1174 JLI_MemFree((void *)ccl);
1175
1176 if (_launcher_debug) {
1177 np = ccl = JLI_StringDup(cmdline);
1178 p = nextarg(&np);
1179 printf("ReExec Command: %s (%s)\n", path, p);
1180 printf("ReExec Args: %s\n", np);
1181 JLI_MemFree((void *)ccl);
1182 }
1183 (void)fflush(stdout);
1184 (void)fflush(stderr);
1185
1186 /*
1187 * The following code is modeled after a model presented in the
1188 * Microsoft Technical Article "Moving Unix Applications to
1189 * Windows NT" (March 6, 1994) and "Creating Processes" on MSDN
1190 * (Februrary 2005). It approximates UNIX spawn semantics with
1191 * the parent waiting for termination of the child.
1192 */
1193 memset(&si, 0, sizeof(si));
1194 si.cb =sizeof(STARTUPINFO);
1195 memset(&pi, 0, sizeof(pi));
1196
1197 if (!CreateProcess((LPCTSTR)path, /* executable name */
1198 (LPTSTR)cmdline, /* command line */
1199 (LPSECURITY_ATTRIBUTES)NULL, /* process security attr. */
1200 (LPSECURITY_ATTRIBUTES)NULL, /* thread security attr. */
1201 (BOOL)TRUE, /* inherits system handles */
1202 (DWORD)0, /* creation flags */
1203 (LPVOID)NULL, /* environment block */
1204 (LPCTSTR)NULL, /* current directory */
1205 (LPSTARTUPINFO)&si, /* (in) startup information */
1206 (LPPROCESS_INFORMATION)&pi)) { /* (out) process information */
1207 ReportSysErrorMessage2("CreateProcess(%s, ...) failed: %s",
1208 path, JNI_TRUE);
1209 exit(1);
1210 }
1211
1212 if (WaitForSingleObject(pi.hProcess, INFINITE) != WAIT_FAILED) {
1213 if (GetExitCodeProcess(pi.hProcess, &exitCode) == FALSE)
1214 exitCode = 1;
1215 } else {
1216 ReportErrorMessage("WaitForSingleObject() failed.", JNI_TRUE);
1217 exitCode = 1;
1218 }
1219
1220 CloseHandle(pi.hThread);
1221 CloseHandle(pi.hProcess);
1222
1223 exit(exitCode);
1224 }
1225
1226 }
1227
1228 #endif /* ifndef GAMMA */
1229
1230
1231 /*
1232 * Wrapper for platform dependent unsetenv function.
1233 */
1234 int
1235 UnsetEnv(char *name)
1236 {
1237 int ret;
1238 char *buf = JLI_MemAlloc(strlen(name) + 2);
1239 buf = strcat(strcpy(buf, name), "=");
1240 ret = _putenv(buf);
1241 JLI_MemFree(buf);
1242 return (ret);
1243 }
1244
1245 /* --- Splash Screen shared library support --- */
1246
1247 static const char* SPLASHSCREEN_SO = "\\bin\\splashscreen.dll";
1248
1249 static HMODULE hSplashLib = NULL;
1250
1251 void* SplashProcAddress(const char* name) {
1252 char libraryPath[MAXPATHLEN]; /* some extra space for strcat'ing SPLASHSCREEN_SO */
1253
1254 if (!GetJREPath(libraryPath, MAXPATHLEN)) {
1255 return NULL;
1256 }
1257 if (strlen(libraryPath)+strlen(SPLASHSCREEN_SO) >= MAXPATHLEN) {
1258 return NULL;
1259 }
1260 strcat(libraryPath, SPLASHSCREEN_SO);
1261
1262 if (!hSplashLib) {
1263 hSplashLib = LoadLibrary(libraryPath);
1264 }
1265 if (hSplashLib) {
1266 return GetProcAddress(hSplashLib, name);
1267 } else {
1268 return NULL;
1269 }
1270 }
1271
1272 void SplashFreeLibrary() {
1273 if (hSplashLib) {
1274 FreeLibrary(hSplashLib);
1275 hSplashLib = NULL;
1276 }
1277 }
1278
1279 const char *
1280 jlong_format_specifier() {
1281 return "%I64d";
1282 }
1283
1284 /*
1285 * Block current thread and continue execution in a new thread
1286 */
1287 int
1288 ContinueInNewThread(int (JNICALL *continuation)(void *), jlong stack_size, void * args) {
1289 int rslt = 0;
1290 unsigned thread_id;
1291
1292 #ifndef STACK_SIZE_PARAM_IS_A_RESERVATION
1293 #define STACK_SIZE_PARAM_IS_A_RESERVATION (0x10000)
1294 #endif
1295
1296 /*
1297 * STACK_SIZE_PARAM_IS_A_RESERVATION is what we want, but it's not
1298 * supported on older version of Windows. Try first with the flag; and
1299 * if that fails try again without the flag. See MSDN document or HotSpot
1300 * source (os_win32.cpp) for details.
1301 */
1302 HANDLE thread_handle =
1303 (HANDLE)_beginthreadex(NULL,
1304 (unsigned)stack_size,
1305 continuation,
1306 args,
1307 STACK_SIZE_PARAM_IS_A_RESERVATION,
1308 &thread_id);
1309 if (thread_handle == NULL) {
1310 thread_handle =
1311 (HANDLE)_beginthreadex(NULL,
1312 (unsigned)stack_size,
1313 continuation,
1314 args,
1315 0,
1316 &thread_id);
1317 }
1318
1319 /* AWT preloading (AFTER main thread start) */
1320 #ifdef ENABLE_AWT_PRELOAD
1321 /* D3D preloading */
1322 if (awtPreloadD3D != 0) {
1323 char *envValue;
1324 /* D3D routines checks env.var J2D_D3D if no appropriate
1325 * command line params was specified
1326 */
1327 envValue = getenv("J2D_D3D");
1328 if (envValue != NULL && stricmp(envValue, "false") == 0) {
1329 awtPreloadD3D = 0;
1330 }
1331 /* Test that AWT preloading isn't disabled by J2D_D3D_PRELOAD env.var */
1332 envValue = getenv("J2D_D3D_PRELOAD");
1333 if (envValue != NULL && stricmp(envValue, "false") == 0) {
1334 awtPreloadD3D = 0;
1335 }
1336 if (awtPreloadD3D < 0) {
1337 /* If awtPreloadD3D is still undefined (-1), test
1338 * if it is turned on by J2D_D3D_PRELOAD env.var.
1339 * By default it's turned OFF.
1340 */
1341 awtPreloadD3D = 0;
1342 if (envValue != NULL && stricmp(envValue, "true") == 0) {
1343 awtPreloadD3D = 1;
1344 }
1345 }
1346 }
1347 if (awtPreloadD3D) {
1348 AWTPreload(D3D_PRELOAD_FUNC);
1349 }
1350 #endif /* ENABLE_AWT_PRELOAD */
1351
1352 if (thread_handle) {
1353 WaitForSingleObject(thread_handle, INFINITE);
1354 GetExitCodeThread(thread_handle, &rslt);
1355 CloseHandle(thread_handle);
1356 } else {
1357 rslt = continuation(args);
1358 }
1359
1360 #ifdef ENABLE_AWT_PRELOAD
1361 if (awtPreloaded) {
1362 AWTPreloadStop();
1363 }
1364 #endif /* ENABLE_AWT_PRELOAD */
1365
1366 return rslt;
1367 }
1368
1369 /* Linux only, empty on windows. */
1370 void SetJavaLauncherPlatformProps() {}
1371
1372
1373 //==============================
1374 // AWT preloading
1375 #ifdef ENABLE_AWT_PRELOAD
1376
1377 typedef int FnPreloadStart(void);
1378 typedef void FnPreloadStop(void);
1379 static FnPreloadStop *fnPreloadStop = NULL;
1380 static HMODULE hPreloadAwt = NULL;
1381
1382 /*
1383 * Starts AWT preloading
1384 */
1385 int AWTPreload(const char *funcName)
1386 {
1387 int result = -1;
1388
1389 // load AWT library once (if several preload function should be called)
1390 if (hPreloadAwt == NULL) {
1391 // awt.dll is not loaded yet
1392 char libraryPath[MAXPATHLEN];
1393 int jrePathLen = 0;
1394 HMODULE hJava = NULL;
1395 HMODULE hVerify = NULL;
1396
1397 while (1) {
1398 // awt.dll depends on jvm.dll & java.dll;
1399 // jvm.dll is already loaded, so we need only java.dll;
1400 // java.dll depends on MSVCRT lib & verify.dll.
1401 if (!GetJREPath(libraryPath, MAXPATHLEN)) {
1402 break;
1403 }
1404
1405 // save path length
1406 jrePathLen = strlen(libraryPath);
1407
1408 // load msvcrt 1st
1409 LoadMSVCRT();
1410
1411 // load verify.dll
1412 strcat(libraryPath, "\\bin\\verify.dll");
1413 hVerify = LoadLibrary(libraryPath);
1414 if (hVerify == NULL) {
1415 break;
1416 }
1417
1418 // restore jrePath
1419 libraryPath[jrePathLen] = 0;
1420 // load java.dll
1421 strcat(libraryPath, "\\bin\\" JAVA_DLL);
1422 hJava = LoadLibrary(libraryPath);
1423 if (hJava == NULL) {
1424 break;
1425 }
1426
1427 // restore jrePath
1428 libraryPath[jrePathLen] = 0;
1429 // load awt.dll
1430 strcat(libraryPath, "\\bin\\awt.dll");
1431 hPreloadAwt = LoadLibrary(libraryPath);
1432 if (hPreloadAwt == NULL) {
1433 break;
1434 }
1435
1436 // get "preloadStop" func ptr
1437 fnPreloadStop = (FnPreloadStop *)GetProcAddress(hPreloadAwt, "preloadStop");
1438
1439 break;
1440 }
1441 }
1442
1443 if (hPreloadAwt != NULL) {
1444 FnPreloadStart *fnInit = (FnPreloadStart *)GetProcAddress(hPreloadAwt, funcName);
1445 if (fnInit != NULL) {
1446 // don't forget to stop preloading
1447 awtPreloaded = 1;
1448
1449 result = fnInit();
1450 }
1451 }
1452
1453 return result;
1454 }
1455
1456 /*
1457 * Terminates AWT preloading
1458 */
1459 void AWTPreloadStop() {
1460 if (fnPreloadStop != NULL) {
1461 fnPreloadStop();
1462 }
1463 }
1464
1465 #endif /* ENABLE_AWT_PRELOAD */