1 /* 2 * Copyright (c) 1997, 2018, 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 #include <windows.h> 27 #include <io.h> 28 #include <process.h> 29 #include <stdlib.h> 30 #include <stdio.h> 31 #include <stdarg.h> 32 #include <string.h> 33 #include <sys/types.h> 34 #include <sys/stat.h> 35 #include <wtypes.h> 36 #include <commctrl.h> 37 38 #include <jni.h> 39 #include "java.h" 40 41 #define JVM_DLL "jvm.dll" 42 #define JAVA_DLL "java.dll" 43 44 /* 45 * Prototypes. 46 */ 47 static jboolean GetJVMPath(const char *jrepath, const char *jvmtype, 48 char *jvmpath, jint jvmpathsize); 49 static jboolean GetJREPath(char *path, jint pathsize); 50 51 #ifdef USE_REGISTRY_LOOKUP 52 jboolean GetPublicJREHome(char *buf, jint bufsize); 53 #endif 54 55 /* We supports warmup for UI stack that is performed in parallel 56 * to VM initialization. 57 * This helps to improve startup of UI application as warmup phase 58 * might be long due to initialization of OS or hardware resources. 59 * It is not CPU bound and therefore it does not interfere with VM init. 60 * Obviously such warmup only has sense for UI apps and therefore it needs 61 * to be explicitly requested by passing -Dsun.awt.warmup=true property 62 * (this is always the case for plugin/javaws). 63 * 64 * Implementation launches new thread after VM starts and use it to perform 65 * warmup code (platform dependent). 66 * This thread is later reused as AWT toolkit thread as graphics toolkit 67 * often assume that they are used from the same thread they were launched on. 68 * 69 * At the moment we only support warmup for D3D. It only possible on windows 70 * and only if other flags do not prohibit this (e.g. OpenGL support requested). 71 */ 72 #undef ENABLE_AWT_PRELOAD 73 #ifndef JAVA_ARGS /* turn off AWT preloading for javac, jar, etc */ 74 /* CR6999872: fastdebug crashes if awt library is loaded before JVM is 75 * initialized*/ 76 #if !defined(DEBUG) 77 #define ENABLE_AWT_PRELOAD 78 #endif 79 #endif 80 81 #ifdef ENABLE_AWT_PRELOAD 82 /* "AWT was preloaded" flag; 83 * turned on by AWTPreload(). 84 */ 85 int awtPreloaded = 0; 86 87 /* Calls a function with the name specified 88 * the function must be int(*fn)(void). 89 */ 90 int AWTPreload(const char *funcName); 91 /* stops AWT preloading */ 92 void AWTPreloadStop(); 93 94 /* D3D preloading */ 95 /* -1: not initialized; 0: OFF, 1: ON */ 96 int awtPreloadD3D = -1; 97 /* command line parameter to swith D3D preloading on */ 98 #define PARAM_PRELOAD_D3D "-Dsun.awt.warmup" 99 /* D3D/OpenGL management parameters */ 100 #define PARAM_NODDRAW "-Dsun.java2d.noddraw" 101 #define PARAM_D3D "-Dsun.java2d.d3d" 102 #define PARAM_OPENGL "-Dsun.java2d.opengl" 103 /* funtion in awt.dll (src/windows/native/sun/java2d/d3d/D3DPipelineManager.cpp) */ 104 #define D3D_PRELOAD_FUNC "preloadD3D" 105 106 /* Extracts value of a parameter with the specified name 107 * from command line argument (returns pointer in the argument). 108 * Returns NULL if the argument does not contains the parameter. 109 * e.g.: 110 * GetParamValue("theParam", "theParam=value") returns pointer to "value". 111 */ 112 const char * GetParamValue(const char *paramName, const char *arg) { 113 size_t nameLen = JLI_StrLen(paramName); 114 if (JLI_StrNCmp(paramName, arg, nameLen) == 0) { 115 /* arg[nameLen] is valid (may contain final NULL) */ 116 if (arg[nameLen] == '=') { 117 return arg + nameLen + 1; 118 } 119 } 120 return NULL; 121 } 122 123 /* Checks if commandline argument contains property specified 124 * and analyze it as boolean property (true/false). 125 * Returns -1 if the argument does not contain the parameter; 126 * Returns 1 if the argument contains the parameter and its value is "true"; 127 * Returns 0 if the argument contains the parameter and its value is "false". 128 */ 129 int GetBoolParamValue(const char *paramName, const char *arg) { 130 const char * paramValue = GetParamValue(paramName, arg); 131 if (paramValue != NULL) { 132 if (JLI_StrCaseCmp(paramValue, "true") == 0) { 133 return 1; 134 } 135 if (JLI_StrCaseCmp(paramValue, "false") == 0) { 136 return 0; 137 } 138 } 139 return -1; 140 } 141 #endif /* ENABLE_AWT_PRELOAD */ 142 143 144 static jboolean _isjavaw = JNI_FALSE; 145 146 147 jboolean 148 IsJavaw() 149 { 150 return _isjavaw; 151 } 152 153 /* 154 * 155 */ 156 void 157 CreateExecutionEnvironment(int *pargc, char ***pargv, 158 char *jrepath, jint so_jrepath, 159 char *jvmpath, jint so_jvmpath, 160 char *jvmcfg, jint so_jvmcfg) { 161 162 char *jvmtype; 163 int i = 0; 164 char** argv = *pargv; 165 166 /* Find out where the JRE is that we will be using. */ 167 if (!GetJREPath(jrepath, so_jrepath)) { 168 JLI_ReportErrorMessage(JRE_ERROR1); 169 exit(2); 170 } 171 172 JLI_Snprintf(jvmcfg, so_jvmcfg, "%s%slib%sjvm.cfg", 173 jrepath, FILESEP, FILESEP); 174 175 /* Find the specified JVM type */ 176 if (ReadKnownVMs(jvmcfg, JNI_FALSE) < 1) { 177 JLI_ReportErrorMessage(CFG_ERROR7); 178 exit(1); 179 } 180 181 jvmtype = CheckJvmType(pargc, pargv, JNI_FALSE); 182 if (JLI_StrCmp(jvmtype, "ERROR") == 0) { 183 JLI_ReportErrorMessage(CFG_ERROR9); 184 exit(4); 185 } 186 187 jvmpath[0] = '\0'; 188 if (!GetJVMPath(jrepath, jvmtype, jvmpath, so_jvmpath)) { 189 JLI_ReportErrorMessage(CFG_ERROR8, jvmtype, jvmpath); 190 exit(4); 191 } 192 /* If we got here, jvmpath has been correctly initialized. */ 193 194 /* Check if we need preload AWT */ 195 #ifdef ENABLE_AWT_PRELOAD 196 argv = *pargv; 197 for (i = 0; i < *pargc ; i++) { 198 /* Tests the "turn on" parameter only if not set yet. */ 199 if (awtPreloadD3D < 0) { 200 if (GetBoolParamValue(PARAM_PRELOAD_D3D, argv[i]) == 1) { 201 awtPreloadD3D = 1; 202 } 203 } 204 /* Test parameters which can disable preloading if not already disabled. */ 205 if (awtPreloadD3D != 0) { 206 if (GetBoolParamValue(PARAM_NODDRAW, argv[i]) == 1 207 || GetBoolParamValue(PARAM_D3D, argv[i]) == 0 208 || GetBoolParamValue(PARAM_OPENGL, argv[i]) == 1) 209 { 210 awtPreloadD3D = 0; 211 /* no need to test the rest of the parameters */ 212 break; 213 } 214 } 215 } 216 #endif /* ENABLE_AWT_PRELOAD */ 217 } 218 219 220 static jboolean 221 LoadMSVCRT() 222 { 223 // Only do this once 224 static int loaded = 0; 225 char crtpath[MAXPATHLEN]; 226 227 if (!loaded) { 228 /* 229 * The Microsoft C Runtime Library needs to be loaded first. A copy is 230 * assumed to be present in the "JRE path" directory. If it is not found 231 * there (or "JRE path" fails to resolve), skip the explicit load and let 232 * nature take its course, which is likely to be a failure to execute. 233 * The makefiles will provide the correct lib contained in quotes in the 234 * macro MSVCR_DLL_NAME. 235 */ 236 #ifdef MSVCR_DLL_NAME 237 if (GetJREPath(crtpath, MAXPATHLEN)) { 238 if (JLI_StrLen(crtpath) + JLI_StrLen("\\bin\\") + 239 JLI_StrLen(MSVCR_DLL_NAME) >= MAXPATHLEN) { 240 JLI_ReportErrorMessage(JRE_ERROR11); 241 return JNI_FALSE; 242 } 243 (void)JLI_StrCat(crtpath, "\\bin\\" MSVCR_DLL_NAME); /* Add crt dll */ 244 JLI_TraceLauncher("CRT path is %s\n", crtpath); 245 if (_access(crtpath, 0) == 0) { 246 if (LoadLibrary(crtpath) == 0) { 247 JLI_ReportErrorMessage(DLL_ERROR4, crtpath); 248 return JNI_FALSE; 249 } 250 } 251 } 252 #endif /* MSVCR_DLL_NAME */ 253 #ifdef MSVCP_DLL_NAME 254 if (GetJREPath(crtpath, MAXPATHLEN)) { 255 if (JLI_StrLen(crtpath) + JLI_StrLen("\\bin\\") + 256 JLI_StrLen(MSVCP_DLL_NAME) >= MAXPATHLEN) { 257 JLI_ReportErrorMessage(JRE_ERROR11); 258 return JNI_FALSE; 259 } 260 (void)JLI_StrCat(crtpath, "\\bin\\" MSVCP_DLL_NAME); /* Add prt dll */ 261 JLI_TraceLauncher("PRT path is %s\n", crtpath); 262 if (_access(crtpath, 0) == 0) { 263 if (LoadLibrary(crtpath) == 0) { 264 JLI_ReportErrorMessage(DLL_ERROR4, crtpath); 265 return JNI_FALSE; 266 } 267 } 268 } 269 #endif /* MSVCP_DLL_NAME */ 270 loaded = 1; 271 } 272 return JNI_TRUE; 273 } 274 275 276 /* 277 * Find path to JRE based on .exe's location or registry settings. 278 */ 279 jboolean 280 GetJREPath(char *path, jint pathsize) 281 { 282 char javadll[MAXPATHLEN]; 283 struct stat s; 284 285 if (GetApplicationHome(path, pathsize)) { 286 /* Is JRE co-located with the application? */ 287 JLI_Snprintf(javadll, sizeof(javadll), "%s\\bin\\" JAVA_DLL, path); 288 if (stat(javadll, &s) == 0) { 289 JLI_TraceLauncher("JRE path is %s\n", path); 290 return JNI_TRUE; 291 } 292 /* ensure storage for path + \jre + NULL */ 293 if ((JLI_StrLen(path) + 4 + 1) > (size_t) pathsize) { 294 JLI_TraceLauncher("Insufficient space to store JRE path\n"); 295 return JNI_FALSE; 296 } 297 /* Does this app ship a private JRE in <apphome>\jre directory? */ 298 JLI_Snprintf(javadll, sizeof (javadll), "%s\\jre\\bin\\" JAVA_DLL, path); 299 if (stat(javadll, &s) == 0) { 300 JLI_StrCat(path, "\\jre"); 301 JLI_TraceLauncher("JRE path is %s\n", path); 302 return JNI_TRUE; 303 } 304 } 305 306 /* Try getting path to JRE from path to JLI.DLL */ 307 if (GetApplicationHomeFromDll(path, pathsize)) { 308 JLI_Snprintf(javadll, sizeof(javadll), "%s\\bin\\" JAVA_DLL, path); 309 if (stat(javadll, &s) == 0) { 310 JLI_TraceLauncher("JRE path is %s\n", path); 311 return JNI_TRUE; 312 } 313 } 314 315 #ifdef USE_REGISTRY_LOOKUP 316 /* Lookup public JRE using Windows registry. */ 317 if (GetPublicJREHome(path, pathsize)) { 318 JLI_TraceLauncher("JRE path is %s\n", path); 319 return JNI_TRUE; 320 } 321 #endif 322 323 JLI_ReportErrorMessage(JRE_ERROR8 JAVA_DLL); 324 return JNI_FALSE; 325 } 326 327 /* 328 * Given a JRE location and a JVM type, construct what the name the 329 * JVM shared library will be. Return true, if such a library 330 * exists, false otherwise. 331 */ 332 static jboolean 333 GetJVMPath(const char *jrepath, const char *jvmtype, 334 char *jvmpath, jint jvmpathsize) 335 { 336 struct stat s; 337 if (JLI_StrChr(jvmtype, '/') || JLI_StrChr(jvmtype, '\\')) { 338 JLI_Snprintf(jvmpath, jvmpathsize, "%s\\" JVM_DLL, jvmtype); 339 } else { 340 JLI_Snprintf(jvmpath, jvmpathsize, "%s\\bin\\%s\\" JVM_DLL, 341 jrepath, jvmtype); 342 } 343 if (stat(jvmpath, &s) == 0) { 344 return JNI_TRUE; 345 } else { 346 return JNI_FALSE; 347 } 348 } 349 350 /* 351 * Load a jvm from "jvmpath" and initialize the invocation functions. 352 */ 353 jboolean 354 LoadJavaVM(const char *jvmpath, InvocationFunctions *ifn) 355 { 356 HINSTANCE handle; 357 358 JLI_TraceLauncher("JVM path is %s\n", jvmpath); 359 360 /* 361 * The Microsoft C Runtime Library needs to be loaded first. A copy is 362 * assumed to be present in the "JRE path" directory. If it is not found 363 * there (or "JRE path" fails to resolve), skip the explicit load and let 364 * nature take its course, which is likely to be a failure to execute. 365 * 366 */ 367 LoadMSVCRT(); 368 369 /* Load the Java VM DLL */ 370 if ((handle = LoadLibrary(jvmpath)) == 0) { 371 JLI_ReportErrorMessage(DLL_ERROR4, (char *)jvmpath); 372 return JNI_FALSE; 373 } 374 375 /* Now get the function addresses */ 376 ifn->CreateJavaVM = 377 (void *)GetProcAddress(handle, "JNI_CreateJavaVM"); 378 ifn->GetDefaultJavaVMInitArgs = 379 (void *)GetProcAddress(handle, "JNI_GetDefaultJavaVMInitArgs"); 380 if (ifn->CreateJavaVM == 0 || ifn->GetDefaultJavaVMInitArgs == 0) { 381 JLI_ReportErrorMessage(JNI_ERROR1, (char *)jvmpath); 382 return JNI_FALSE; 383 } 384 385 return JNI_TRUE; 386 } 387 388 /* 389 * Removes the trailing file name and one sub-folder from a path. 390 * If buf is "c:\foo\bin\javac", then put "c:\foo" into buf. 391 */ 392 jboolean 393 TruncatePath(char *buf) 394 { 395 char *cp; 396 *JLI_StrRChr(buf, '\\') = '\0'; /* remove .exe file name */ 397 if ((cp = JLI_StrRChr(buf, '\\')) == 0) { 398 /* This happens if the application is in a drive root, and 399 * there is no bin directory. */ 400 buf[0] = '\0'; 401 return JNI_FALSE; 402 } 403 *cp = '\0'; /* remove the bin\ part */ 404 return JNI_TRUE; 405 } 406 407 /* 408 * Retrieves the path to the JRE home by locating the executable file 409 * of the current process and then truncating the path to the executable 410 */ 411 jboolean 412 GetApplicationHome(char *buf, jint bufsize) 413 { 414 GetModuleFileName(NULL, buf, bufsize); 415 return TruncatePath(buf); 416 } 417 418 /* 419 * Retrieves the path to the JRE home by locating JLI.DLL and 420 * then truncating the path to JLI.DLL 421 */ 422 jboolean 423 GetApplicationHomeFromDll(char *buf, jint bufsize) 424 { 425 HMODULE module; 426 DWORD flags = GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | 427 GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT; 428 429 if (GetModuleHandleEx(flags, (LPCSTR)&GetJREPath, &module) != 0) { 430 if (GetModuleFileName(module, buf, bufsize) != 0) { 431 return TruncatePath(buf); 432 } 433 } 434 return JNI_FALSE; 435 } 436 437 /* 438 * Support for doing cheap, accurate interval timing. 439 */ 440 static jboolean counterAvailable = JNI_FALSE; 441 static jboolean counterInitialized = JNI_FALSE; 442 static LARGE_INTEGER counterFrequency; 443 444 jlong CounterGet() 445 { 446 LARGE_INTEGER count; 447 448 if (!counterInitialized) { 449 counterAvailable = QueryPerformanceFrequency(&counterFrequency); 450 counterInitialized = JNI_TRUE; 451 } 452 if (!counterAvailable) { 453 return 0; 454 } 455 QueryPerformanceCounter(&count); 456 return (jlong)(count.QuadPart); 457 } 458 459 jlong Counter2Micros(jlong counts) 460 { 461 if (!counterAvailable || !counterInitialized) { 462 return 0; 463 } 464 return (counts * 1000 * 1000)/counterFrequency.QuadPart; 465 } 466 /* 467 * windows snprintf does not guarantee a null terminator in the buffer, 468 * if the computed size is equal to or greater than the buffer size, 469 * as well as error conditions. This function guarantees a null terminator 470 * under all these conditions. An unreasonable buffer or size will return 471 * an error value. Under all other conditions this function will return the 472 * size of the bytes actually written minus the null terminator, similar 473 * to ansi snprintf api. Thus when calling this function the caller must 474 * ensure storage for the null terminator. 475 */ 476 int 477 JLI_Snprintf(char* buffer, size_t size, const char* format, ...) { 478 int rc; 479 va_list vl; 480 if (size == 0 || buffer == NULL) 481 return -1; 482 buffer[0] = '\0'; 483 va_start(vl, format); 484 rc = vsnprintf(buffer, size, format, vl); 485 va_end(vl); 486 /* force a null terminator, if something is amiss */ 487 if (rc < 0) { 488 /* apply ansi semantics */ 489 buffer[size - 1] = '\0'; 490 return (int)size; 491 } else if (rc == size) { 492 /* force a null terminator */ 493 buffer[size - 1] = '\0'; 494 } 495 return rc; 496 } 497 498 JNIEXPORT void JNICALL 499 JLI_ReportErrorMessage(const char* fmt, ...) { 500 va_list vl; 501 va_start(vl,fmt); 502 503 if (IsJavaw()) { 504 char *message; 505 506 /* get the length of the string we need */ 507 int n = _vscprintf(fmt, vl); 508 509 message = (char *)JLI_MemAlloc(n + 1); 510 _vsnprintf(message, n, fmt, vl); 511 message[n]='\0'; 512 MessageBox(NULL, message, "Java Virtual Machine Launcher", 513 (MB_OK|MB_ICONSTOP|MB_APPLMODAL)); 514 JLI_MemFree(message); 515 } else { 516 vfprintf(stderr, fmt, vl); 517 fprintf(stderr, "\n"); 518 } 519 va_end(vl); 520 } 521 522 /* 523 * Just like JLI_ReportErrorMessage, except that it concatenates the system 524 * error message if any, its upto the calling routine to correctly 525 * format the separation of the messages. 526 */ 527 JNIEXPORT void JNICALL 528 JLI_ReportErrorMessageSys(const char *fmt, ...) 529 { 530 va_list vl; 531 532 int save_errno = errno; 533 DWORD errval; 534 jboolean freeit = JNI_FALSE; 535 char *errtext = NULL; 536 537 va_start(vl, fmt); 538 539 if ((errval = GetLastError()) != 0) { /* Platform SDK / DOS Error */ 540 int n = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM| 541 FORMAT_MESSAGE_IGNORE_INSERTS|FORMAT_MESSAGE_ALLOCATE_BUFFER, 542 NULL, errval, 0, (LPTSTR)&errtext, 0, NULL); 543 if (errtext == NULL || n == 0) { /* Paranoia check */ 544 errtext = ""; 545 n = 0; 546 } else { 547 freeit = JNI_TRUE; 548 if (n > 2) { /* Drop final CR, LF */ 549 if (errtext[n - 1] == '\n') n--; 550 if (errtext[n - 1] == '\r') n--; 551 errtext[n] = '\0'; 552 } 553 } 554 } else { /* C runtime error that has no corresponding DOS error code */ 555 errtext = strerror(save_errno); 556 } 557 558 if (IsJavaw()) { 559 char *message; 560 int mlen; 561 /* get the length of the string we need */ 562 int len = mlen = _vscprintf(fmt, vl) + 1; 563 if (freeit) { 564 mlen += (int)JLI_StrLen(errtext); 565 } 566 567 message = (char *)JLI_MemAlloc(mlen); 568 _vsnprintf(message, len, fmt, vl); 569 message[len]='\0'; 570 571 if (freeit) { 572 JLI_StrCat(message, errtext); 573 } 574 575 MessageBox(NULL, message, "Java Virtual Machine Launcher", 576 (MB_OK|MB_ICONSTOP|MB_APPLMODAL)); 577 578 JLI_MemFree(message); 579 } else { 580 vfprintf(stderr, fmt, vl); 581 if (freeit) { 582 fprintf(stderr, "%s", errtext); 583 } 584 } 585 if (freeit) { 586 (void)LocalFree((HLOCAL)errtext); 587 } 588 va_end(vl); 589 } 590 591 JNIEXPORT void JNICALL 592 JLI_ReportExceptionDescription(JNIEnv * env) { 593 if (IsJavaw()) { 594 /* 595 * This code should be replaced by code which opens a window with 596 * the exception detail message, for now atleast put a dialog up. 597 */ 598 MessageBox(NULL, "A Java Exception has occurred.", "Java Virtual Machine Launcher", 599 (MB_OK|MB_ICONSTOP|MB_APPLMODAL)); 600 } else { 601 (*env)->ExceptionDescribe(env); 602 } 603 } 604 605 /* 606 * Wrapper for platform dependent unsetenv function. 607 */ 608 int 609 UnsetEnv(char *name) 610 { 611 int ret; 612 char *buf = JLI_MemAlloc(JLI_StrLen(name) + 2); 613 buf = JLI_StrCat(JLI_StrCpy(buf, name), "="); 614 ret = _putenv(buf); 615 JLI_MemFree(buf); 616 return (ret); 617 } 618 619 /* --- Splash Screen shared library support --- */ 620 621 static const char* SPLASHSCREEN_SO = "\\bin\\splashscreen.dll"; 622 623 static HMODULE hSplashLib = NULL; 624 625 void* SplashProcAddress(const char* name) { 626 char libraryPath[MAXPATHLEN]; /* some extra space for JLI_StrCat'ing SPLASHSCREEN_SO */ 627 628 if (!GetJREPath(libraryPath, MAXPATHLEN)) { 629 return NULL; 630 } 631 if (JLI_StrLen(libraryPath)+JLI_StrLen(SPLASHSCREEN_SO) >= MAXPATHLEN) { 632 return NULL; 633 } 634 JLI_StrCat(libraryPath, SPLASHSCREEN_SO); 635 636 if (!hSplashLib) { 637 hSplashLib = LoadLibrary(libraryPath); 638 } 639 if (hSplashLib) { 640 return GetProcAddress(hSplashLib, name); 641 } else { 642 return NULL; 643 } 644 } 645 646 void SplashFreeLibrary() { 647 if (hSplashLib) { 648 FreeLibrary(hSplashLib); 649 hSplashLib = NULL; 650 } 651 } 652 653 /* 654 * Block current thread and continue execution in a new thread 655 */ 656 int 657 ContinueInNewThread0(int (JNICALL *continuation)(void *), jlong stack_size, void * args) { 658 int rslt = 0; 659 unsigned thread_id; 660 661 #ifndef STACK_SIZE_PARAM_IS_A_RESERVATION 662 #define STACK_SIZE_PARAM_IS_A_RESERVATION (0x10000) 663 #endif 664 665 /* 666 * STACK_SIZE_PARAM_IS_A_RESERVATION is what we want, but it's not 667 * supported on older version of Windows. Try first with the flag; and 668 * if that fails try again without the flag. See MSDN document or HotSpot 669 * source (os_win32.cpp) for details. 670 */ 671 HANDLE thread_handle = 672 (HANDLE)_beginthreadex(NULL, 673 (unsigned)stack_size, 674 continuation, 675 args, 676 STACK_SIZE_PARAM_IS_A_RESERVATION, 677 &thread_id); 678 if (thread_handle == NULL) { 679 thread_handle = 680 (HANDLE)_beginthreadex(NULL, 681 (unsigned)stack_size, 682 continuation, 683 args, 684 0, 685 &thread_id); 686 } 687 688 /* AWT preloading (AFTER main thread start) */ 689 #ifdef ENABLE_AWT_PRELOAD 690 /* D3D preloading */ 691 if (awtPreloadD3D != 0) { 692 char *envValue; 693 /* D3D routines checks env.var J2D_D3D if no appropriate 694 * command line params was specified 695 */ 696 envValue = getenv("J2D_D3D"); 697 if (envValue != NULL && JLI_StrCaseCmp(envValue, "false") == 0) { 698 awtPreloadD3D = 0; 699 } 700 /* Test that AWT preloading isn't disabled by J2D_D3D_PRELOAD env.var */ 701 envValue = getenv("J2D_D3D_PRELOAD"); 702 if (envValue != NULL && JLI_StrCaseCmp(envValue, "false") == 0) { 703 awtPreloadD3D = 0; 704 } 705 if (awtPreloadD3D < 0) { 706 /* If awtPreloadD3D is still undefined (-1), test 707 * if it is turned on by J2D_D3D_PRELOAD env.var. 708 * By default it's turned OFF. 709 */ 710 awtPreloadD3D = 0; 711 if (envValue != NULL && JLI_StrCaseCmp(envValue, "true") == 0) { 712 awtPreloadD3D = 1; 713 } 714 } 715 } 716 if (awtPreloadD3D) { 717 AWTPreload(D3D_PRELOAD_FUNC); 718 } 719 #endif /* ENABLE_AWT_PRELOAD */ 720 721 if (thread_handle) { 722 WaitForSingleObject(thread_handle, INFINITE); 723 GetExitCodeThread(thread_handle, &rslt); 724 CloseHandle(thread_handle); 725 } else { 726 rslt = continuation(args); 727 } 728 729 #ifdef ENABLE_AWT_PRELOAD 730 if (awtPreloaded) { 731 AWTPreloadStop(); 732 } 733 #endif /* ENABLE_AWT_PRELOAD */ 734 735 return rslt; 736 } 737 738 /* Unix only, empty on windows. */ 739 void SetJavaLauncherPlatformProps() {} 740 741 /* 742 * The implementation for finding classes from the bootstrap 743 * class loader, refer to java.h 744 */ 745 static FindClassFromBootLoader_t *findBootClass = NULL; 746 747 jclass FindBootStrapClass(JNIEnv *env, const char *classname) 748 { 749 HMODULE hJvm; 750 751 if (findBootClass == NULL) { 752 hJvm = GetModuleHandle(JVM_DLL); 753 if (hJvm == NULL) return NULL; 754 /* need to use the demangled entry point */ 755 findBootClass = (FindClassFromBootLoader_t *)GetProcAddress(hJvm, 756 "JVM_FindClassFromBootLoader"); 757 if (findBootClass == NULL) { 758 JLI_ReportErrorMessage(DLL_ERROR4, "JVM_FindClassFromBootLoader"); 759 return NULL; 760 } 761 } 762 return findBootClass(env, classname); 763 } 764 765 void 766 InitLauncher(boolean javaw) 767 { 768 INITCOMMONCONTROLSEX icx; 769 770 /* 771 * Required for javaw mode MessageBox output as well as for 772 * HotSpot -XX:+ShowMessageBoxOnError in java mode, an empty 773 * flag field is sufficient to perform the basic UI initialization. 774 */ 775 memset(&icx, 0, sizeof(INITCOMMONCONTROLSEX)); 776 icx.dwSize = sizeof(INITCOMMONCONTROLSEX); 777 InitCommonControlsEx(&icx); 778 _isjavaw = javaw; 779 JLI_SetTraceLauncher(); 780 } 781 782 783 /* ============================== */ 784 /* AWT preloading */ 785 #ifdef ENABLE_AWT_PRELOAD 786 787 typedef int FnPreloadStart(void); 788 typedef void FnPreloadStop(void); 789 static FnPreloadStop *fnPreloadStop = NULL; 790 static HMODULE hPreloadAwt = NULL; 791 792 /* 793 * Starts AWT preloading 794 */ 795 int AWTPreload(const char *funcName) 796 { 797 int result = -1; 798 /* load AWT library once (if several preload function should be called) */ 799 if (hPreloadAwt == NULL) { 800 /* awt.dll is not loaded yet */ 801 char libraryPath[MAXPATHLEN]; 802 size_t jrePathLen = 0; 803 HMODULE hJava = NULL; 804 HMODULE hVerify = NULL; 805 806 while (1) { 807 /* awt.dll depends on jvm.dll & java.dll; 808 * jvm.dll is already loaded, so we need only java.dll; 809 * java.dll depends on MSVCRT lib & verify.dll. 810 */ 811 if (!GetJREPath(libraryPath, MAXPATHLEN)) { 812 break; 813 } 814 815 /* save path length */ 816 jrePathLen = JLI_StrLen(libraryPath); 817 818 if (jrePathLen + JLI_StrLen("\\bin\\verify.dll") >= MAXPATHLEN) { 819 /* jre path is too long, the library path will not fit there; 820 * report and abort preloading 821 */ 822 JLI_ReportErrorMessage(JRE_ERROR11); 823 break; 824 } 825 826 /* load msvcrt 1st */ 827 LoadMSVCRT(); 828 829 /* load verify.dll */ 830 JLI_StrCat(libraryPath, "\\bin\\verify.dll"); 831 hVerify = LoadLibrary(libraryPath); 832 if (hVerify == NULL) { 833 break; 834 } 835 836 /* restore jrePath */ 837 libraryPath[jrePathLen] = 0; 838 /* load java.dll */ 839 JLI_StrCat(libraryPath, "\\bin\\" JAVA_DLL); 840 hJava = LoadLibrary(libraryPath); 841 if (hJava == NULL) { 842 break; 843 } 844 845 /* restore jrePath */ 846 libraryPath[jrePathLen] = 0; 847 /* load awt.dll */ 848 JLI_StrCat(libraryPath, "\\bin\\awt.dll"); 849 hPreloadAwt = LoadLibrary(libraryPath); 850 if (hPreloadAwt == NULL) { 851 break; 852 } 853 854 /* get "preloadStop" func ptr */ 855 fnPreloadStop = (FnPreloadStop *)GetProcAddress(hPreloadAwt, "preloadStop"); 856 857 break; 858 } 859 } 860 861 if (hPreloadAwt != NULL) { 862 FnPreloadStart *fnInit = (FnPreloadStart *)GetProcAddress(hPreloadAwt, funcName); 863 if (fnInit != NULL) { 864 /* don't forget to stop preloading */ 865 awtPreloaded = 1; 866 867 result = fnInit(); 868 } 869 } 870 871 return result; 872 } 873 874 /* 875 * Terminates AWT preloading 876 */ 877 void AWTPreloadStop() { 878 if (fnPreloadStop != NULL) { 879 fnPreloadStop(); 880 } 881 } 882 883 #endif /* ENABLE_AWT_PRELOAD */ 884 885 int 886 JVMInit(InvocationFunctions* ifn, jlong threadStackSize, 887 int argc, char **argv, 888 int mode, char *what, int ret) 889 { 890 ShowSplashScreen(); 891 return ContinueInNewThread(ifn, threadStackSize, argc, argv, mode, what, ret); 892 } 893 894 void 895 PostJVMInit(JNIEnv *env, jclass mainClass, JavaVM *vm) 896 { 897 // stubbed out for windows and *nixes. 898 } 899 900 void 901 RegisterThread() 902 { 903 // stubbed out for windows and *nixes. 904 } 905 906 /* 907 * on windows, we return a false to indicate this option is not applicable 908 */ 909 jboolean 910 ProcessPlatformOption(const char *arg) 911 { 912 return JNI_FALSE; 913 } 914 915 /* 916 * At this point we have the arguments to the application, and we need to 917 * check with original stdargs in order to compare which of these truly 918 * needs expansion. cmdtoargs will specify this if it finds a bare 919 * (unquoted) argument containing a glob character(s) ie. * or ? 920 */ 921 jobjectArray 922 CreateApplicationArgs(JNIEnv *env, char **strv, int argc) 923 { 924 int i, j, idx; 925 size_t tlen; 926 jobjectArray outArray, inArray; 927 char *arg, **nargv; 928 jboolean needs_expansion = JNI_FALSE; 929 jmethodID mid; 930 int stdargc; 931 StdArg *stdargs; 932 int *appArgIdx; 933 int isTool; 934 jclass cls = GetLauncherHelperClass(env); 935 NULL_CHECK0(cls); 936 937 if (argc == 0) { 938 return NewPlatformStringArray(env, strv, argc); 939 } 940 // the holy grail we need to compare with. 941 stdargs = JLI_GetStdArgs(); 942 stdargc = JLI_GetStdArgc(); 943 944 // sanity check, this should never happen 945 if (argc > stdargc) { 946 JLI_TraceLauncher("Warning: app args is larger than the original, %d %d\n", argc, stdargc); 947 JLI_TraceLauncher("passing arguments as-is.\n"); 948 return NewPlatformStringArray(env, strv, argc); 949 } 950 951 // sanity check, match the args we have, to the holy grail 952 idx = JLI_GetAppArgIndex(); 953 isTool = (idx == 0); 954 if (isTool) { idx++; } // skip tool name 955 JLI_TraceLauncher("AppArgIndex: %d points to %s\n", idx, stdargs[idx].arg); 956 957 appArgIdx = calloc(argc, sizeof(int)); 958 for (i = idx, j = 0; i < stdargc; i++) { 959 if (isTool) { // filter -J used by tools to pass JVM options 960 arg = stdargs[i].arg; 961 if (arg[0] == '-' && arg[1] == 'J') { 962 continue; 963 } 964 } 965 appArgIdx[j++] = i; 966 } 967 // sanity check, ensure same number of arguments for application 968 if (j != argc) { 969 JLI_TraceLauncher("Warning: app args count doesn't match, %d %d\n", j, argc); 970 JLI_TraceLauncher("passing arguments as-is.\n"); 971 JLI_MemFree(appArgIdx); 972 return NewPlatformStringArray(env, strv, argc); 973 } 974 975 // make a copy of the args which will be expanded in java if required. 976 nargv = (char **)JLI_MemAlloc(argc * sizeof(char*)); 977 for (i = 0; i < argc; i++) { 978 jboolean arg_expand; 979 j = appArgIdx[i]; 980 arg_expand = (JLI_StrCmp(stdargs[j].arg, strv[i]) == 0) 981 ? stdargs[j].has_wildcard 982 : JNI_FALSE; 983 if (needs_expansion == JNI_FALSE) 984 needs_expansion = arg_expand; 985 986 // indicator char + String + NULL terminator, the java method will strip 987 // out the first character, the indicator character, so no matter what 988 // we add the indicator 989 tlen = 1 + JLI_StrLen(strv[i]) + 1; 990 nargv[i] = (char *) JLI_MemAlloc(tlen); 991 if (JLI_Snprintf(nargv[i], tlen, "%c%s", arg_expand ? 'T' : 'F', 992 strv[i]) < 0) { 993 return NULL; 994 } 995 JLI_TraceLauncher("%s\n", nargv[i]); 996 } 997 998 if (!needs_expansion) { 999 // clean up any allocated memory and return back the old arguments 1000 for (i = 0 ; i < argc ; i++) { 1001 JLI_MemFree(nargv[i]); 1002 } 1003 JLI_MemFree(nargv); 1004 JLI_MemFree(appArgIdx); 1005 return NewPlatformStringArray(env, strv, argc); 1006 } 1007 NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls, 1008 "expandArgs", 1009 "([Ljava/lang/String;)[Ljava/lang/String;")); 1010 1011 // expand the arguments that require expansion, the java method will strip 1012 // out the indicator character. 1013 NULL_CHECK0(inArray = NewPlatformStringArray(env, nargv, argc)); 1014 outArray = (*env)->CallStaticObjectMethod(env, cls, mid, inArray); 1015 for (i = 0; i < argc; i++) { 1016 JLI_MemFree(nargv[i]); 1017 } 1018 JLI_MemFree(nargv); 1019 JLI_MemFree(appArgIdx); 1020 return outArray; 1021 }