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rev 7131 : 8049049: Unportable format string argument mismatch in hotspot/agent/src/os/solaris/proc/saproc.cpp
Summary: Cast arguments on printing
Reviewed-by: dholmes, sspitsyn, jbachorik
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--- old/hotspot/agent/src/os/solaris/proc/saproc.cpp
+++ new/hotspot/agent/src/os/solaris/proc/saproc.cpp
1 1 /*
2 2 * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
3 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 4 *
5 5 * This code is free software; you can redistribute it and/or modify it
6 6 * under the terms of the GNU General Public License version 2 only, as
7 7 * published by the Free Software Foundation.
8 8 *
9 9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 12 * version 2 for more details (a copy is included in the LICENSE file that
13 13 * accompanied this code).
14 14 *
15 15 * You should have received a copy of the GNU General Public License version
16 16 * 2 along with this work; if not, write to the Free Software Foundation,
17 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 18 *
19 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 20 * or visit www.oracle.com if you need additional information or have any
21 21 * questions.
22 22 *
23 23 */
24 24
25 25 #include "salibproc.h"
26 26 #include "sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal.h"
27 27 #ifndef SOLARIS_11_B159_OR_LATER
28 28 #include <sys/utsname.h>
29 29 #endif
30 30 #include <thread_db.h>
31 31 #include <strings.h>
32 32 #include <limits.h>
33 33 #include <demangle.h>
34 34 #include <stdarg.h>
35 35 #include <stdlib.h>
36 36 #include <errno.h>
37 37
38 38 #define CHECK_EXCEPTION_(value) if(env->ExceptionOccurred()) { return value; }
39 39 #define CHECK_EXCEPTION if(env->ExceptionOccurred()) { return;}
40 40 #define THROW_NEW_DEBUGGER_EXCEPTION_(str, value) { throwNewDebuggerException(env, str); return value; }
41 41 #define THROW_NEW_DEBUGGER_EXCEPTION(str) { throwNewDebuggerException(env, str); return;}
42 42
43 43 #define SYMBOL_BUF_SIZE 256
44 44 #define ERR_MSG_SIZE (PATH_MAX + 256)
45 45
46 46 // debug modes
47 47 static int _libsaproc_debug = 0;
48 48 #ifndef SOLARIS_11_B159_OR_LATER
49 49 static bool _Pstack_iter_debug = false;
50 50
51 51 static void dprintf_2(const char* format,...) {
52 52 if (_Pstack_iter_debug) {
53 53 va_list alist;
54 54
55 55 va_start(alist, format);
56 56 fputs("Pstack_iter DEBUG: ", stderr);
57 57 vfprintf(stderr, format, alist);
58 58 va_end(alist);
59 59 }
60 60 }
61 61 #endif // !SOLARIS_11_B159_OR_LATER
62 62
63 63 static void print_debug(const char* format,...) {
64 64 if (_libsaproc_debug) {
65 65 va_list alist;
66 66
67 67 va_start(alist, format);
68 68 fputs("libsaproc DEBUG: ", stderr);
69 69 vfprintf(stderr, format, alist);
70 70 va_end(alist);
71 71 }
72 72 }
73 73
74 74 struct Debugger {
75 75 JNIEnv* env;
76 76 jobject this_obj;
77 77 };
78 78
79 79 struct DebuggerWithObject : Debugger {
80 80 jobject obj;
81 81 };
82 82
83 83 struct DebuggerWith2Objects : DebuggerWithObject {
84 84 jobject obj2;
85 85 };
86 86
87 87 /*
88 88 * Portions of user thread level detail gathering code is from pstack source
89 89 * code. See pstack.c in Solaris 2.8 user commands source code.
90 90 */
91 91
92 92 static void throwNewDebuggerException(JNIEnv* env, const char* errMsg) {
93 93 env->ThrowNew(env->FindClass("sun/jvm/hotspot/debugger/DebuggerException"), errMsg);
94 94 }
95 95
96 96 // JNI ids for some fields, methods
97 97
98 98 // libproc handler pointer
99 99 static jfieldID p_ps_prochandle_ID = 0;
100 100
101 101 // libthread.so dlopen handle, thread agent ptr and function pointers
102 102 static jfieldID libthread_db_handle_ID = 0;
103 103 static jfieldID p_td_thragent_t_ID = 0;
104 104 static jfieldID p_td_init_ID = 0;
105 105 static jfieldID p_td_ta_new_ID = 0;
106 106 static jfieldID p_td_ta_delete_ID = 0;
107 107 static jfieldID p_td_ta_thr_iter_ID = 0;
108 108 static jfieldID p_td_thr_get_info_ID = 0;
109 109 static jfieldID p_td_ta_map_id2thr_ID = 0;
110 110 static jfieldID p_td_thr_getgregs_ID = 0;
111 111
112 112 // reg index fields
113 113 static jfieldID pcRegIndex_ID = 0;
114 114 static jfieldID fpRegIndex_ID = 0;
115 115
116 116 // part of the class sharing workaround
117 117 static jfieldID classes_jsa_fd_ID = 0;
118 118 static jfieldID p_file_map_header_ID = 0;
119 119
120 120 // method ids
121 121
122 122 static jmethodID getThreadForThreadId_ID = 0;
123 123 static jmethodID createSenderFrame_ID = 0;
124 124 static jmethodID createLoadObject_ID = 0;
125 125 static jmethodID createClosestSymbol_ID = 0;
126 126 static jmethodID listAdd_ID = 0;
127 127
128 128 /*
129 129 * Functions we need from libthread_db
130 130 */
131 131 typedef td_err_e
132 132 (*p_td_init_t)(void);
133 133 typedef td_err_e
134 134 (*p_td_ta_new_t)(void *, td_thragent_t **);
135 135 typedef td_err_e
136 136 (*p_td_ta_delete_t)(td_thragent_t *);
137 137 typedef td_err_e
138 138 (*p_td_ta_thr_iter_t)(const td_thragent_t *, td_thr_iter_f *, void *,
139 139 td_thr_state_e, int, sigset_t *, unsigned);
140 140 typedef td_err_e
141 141 (*p_td_thr_get_info_t)(const td_thrhandle_t *, td_thrinfo_t *);
142 142 typedef td_err_e
143 143 (*p_td_ta_map_id2thr_t)(const td_thragent_t *, thread_t, td_thrhandle_t *);
144 144 typedef td_err_e
145 145 (*p_td_thr_getgregs_t)(const td_thrhandle_t *, prgregset_t);
146 146
147 147 static void
148 148 clear_libthread_db_ptrs(JNIEnv* env, jobject this_obj) {
149 149 // release libthread_db agent, if we had created
150 150 p_td_ta_delete_t p_td_ta_delete = 0;
151 151 p_td_ta_delete = (p_td_ta_delete_t) env->GetLongField(this_obj, p_td_ta_delete_ID);
152 152
153 153 td_thragent_t *p_td_thragent_t = 0;
154 154 p_td_thragent_t = (td_thragent_t*) env->GetLongField(this_obj, p_td_thragent_t_ID);
155 155 if (p_td_thragent_t != 0 && p_td_ta_delete != 0) {
156 156 p_td_ta_delete(p_td_thragent_t);
157 157 }
158 158
159 159 // dlclose libthread_db.so
160 160 void* libthread_db_handle = (void*) env->GetLongField(this_obj, libthread_db_handle_ID);
161 161 if (libthread_db_handle != 0) {
162 162 dlclose(libthread_db_handle);
163 163 }
164 164
165 165 env->SetLongField(this_obj, libthread_db_handle_ID, (jlong)0);
166 166 env->SetLongField(this_obj, p_td_init_ID, (jlong)0);
167 167 env->SetLongField(this_obj, p_td_ta_new_ID, (jlong)0);
168 168 env->SetLongField(this_obj, p_td_ta_delete_ID, (jlong)0);
169 169 env->SetLongField(this_obj, p_td_ta_thr_iter_ID, (jlong)0);
170 170 env->SetLongField(this_obj, p_td_thr_get_info_ID, (jlong)0);
171 171 env->SetLongField(this_obj, p_td_ta_map_id2thr_ID, (jlong)0);
172 172 env->SetLongField(this_obj, p_td_thr_getgregs_ID, (jlong)0);
173 173 }
174 174
175 175
176 176 static void detach_internal(JNIEnv* env, jobject this_obj) {
177 177 // clear libthread_db stuff
178 178 clear_libthread_db_ptrs(env, this_obj);
179 179
180 180 // release ptr to ps_prochandle
181 181 jlong p_ps_prochandle;
182 182 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
183 183 if (p_ps_prochandle != 0L) {
184 184 Prelease((struct ps_prochandle*) p_ps_prochandle, PRELEASE_CLEAR);
185 185 }
186 186
187 187 // part of the class sharing workaround
188 188 int classes_jsa_fd = env->GetIntField(this_obj, classes_jsa_fd_ID);
189 189 if (classes_jsa_fd != -1) {
190 190 close(classes_jsa_fd);
191 191 struct FileMapHeader* pheader = (struct FileMapHeader*) env->GetLongField(this_obj, p_file_map_header_ID);
192 192 if (pheader != NULL) {
193 193 free(pheader);
194 194 }
195 195 }
196 196 }
197 197
198 198 // Is it okay to ignore libthread_db failure? Set env var to ignore
199 199 // libthread_db failure. You can still debug, but will miss threads
200 200 // related functionality.
201 201 static bool sa_ignore_threaddb = (getenv("SA_IGNORE_THREADDB") != 0);
202 202
203 203 #define HANDLE_THREADDB_FAILURE(msg) \
204 204 if (sa_ignore_threaddb) { \
205 205 printf("libsaproc WARNING: %s\n", msg); \
206 206 return; \
207 207 } else { \
208 208 THROW_NEW_DEBUGGER_EXCEPTION(msg); \
209 209 }
210 210
211 211 #define HANDLE_THREADDB_FAILURE_(msg, ret) \
212 212 if (sa_ignore_threaddb) { \
213 213 printf("libsaproc WARNING: %s\n", msg); \
214 214 return ret; \
215 215 } else { \
216 216 THROW_NEW_DEBUGGER_EXCEPTION_(msg, ret); \
217 217 }
218 218
219 219 static const char * alt_root = NULL;
220 220 static int alt_root_len = -1;
221 221
222 222 #define SA_ALTROOT "SA_ALTROOT"
223 223
224 224 static void init_alt_root() {
225 225 if (alt_root_len == -1) {
226 226 alt_root = getenv(SA_ALTROOT);
227 227 if (alt_root)
228 228 alt_root_len = strlen(alt_root);
229 229 else
230 230 alt_root_len = 0;
231 231 }
232 232 }
233 233
234 234 // This function is a complete substitute for the open system call
235 235 // since it's also used to override open calls from libproc to
236 236 // implement as a pathmap style facility for the SA. If libproc
237 237 // starts using other interfaces then this might have to extended to
238 238 // cover other calls.
239 239 extern "C" int libsaproc_open(const char * name, int oflag, ...) {
240 240 if (oflag == O_RDONLY) {
241 241 init_alt_root();
242 242
243 243 if (_libsaproc_debug) {
244 244 printf("libsaproc DEBUG: libsaproc_open %s\n", name);
245 245 }
246 246
247 247 if (alt_root_len > 0) {
248 248 int fd = -1;
249 249 char alt_path[PATH_MAX+1];
250 250
251 251 strcpy(alt_path, alt_root);
252 252 strcat(alt_path, name);
253 253 fd = open(alt_path, O_RDONLY);
254 254 if (fd >= 0) {
255 255 if (_libsaproc_debug) {
256 256 printf("libsaproc DEBUG: libsaproc_open substituted %s\n", alt_path);
257 257 }
258 258 return fd;
259 259 }
260 260
261 261 if (strrchr(name, '/')) {
262 262 strcpy(alt_path, alt_root);
263 263 strcat(alt_path, strrchr(name, '/'));
264 264 fd = open(alt_path, O_RDONLY);
265 265 if (fd >= 0) {
266 266 if (_libsaproc_debug) {
267 267 printf("libsaproc DEBUG: libsaproc_open substituted %s\n", alt_path);
268 268 }
269 269 return fd;
270 270 }
271 271 }
272 272 }
273 273 }
274 274
275 275 {
276 276 mode_t mode;
277 277 va_list ap;
278 278 va_start(ap, oflag);
279 279 mode = va_arg(ap, mode_t);
280 280 va_end(ap);
281 281
282 282 return open(name, oflag, mode);
283 283 }
284 284 }
285 285
286 286
287 287 static void * pathmap_dlopen(const char * name, int mode) {
288 288 init_alt_root();
289 289
290 290 if (_libsaproc_debug) {
291 291 printf("libsaproc DEBUG: pathmap_dlopen %s\n", name);
292 292 }
293 293
294 294 void * handle = NULL;
295 295 if (alt_root_len > 0) {
296 296 char alt_path[PATH_MAX+1];
297 297 strcpy(alt_path, alt_root);
298 298 strcat(alt_path, name);
299 299 handle = dlopen(alt_path, mode);
300 300 if (_libsaproc_debug && handle) {
301 301 printf("libsaproc DEBUG: pathmap_dlopen substituted %s\n", alt_path);
302 302 }
303 303
304 304 if (handle == NULL && strrchr(name, '/')) {
305 305 strcpy(alt_path, alt_root);
306 306 strcat(alt_path, strrchr(name, '/'));
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307 307 handle = dlopen(alt_path, mode);
308 308 if (_libsaproc_debug && handle) {
309 309 printf("libsaproc DEBUG: pathmap_dlopen substituted %s\n", alt_path);
310 310 }
311 311 }
312 312 }
313 313 if (handle == NULL) {
314 314 handle = dlopen(name, mode);
315 315 }
316 316 if (_libsaproc_debug) {
317 - printf("libsaproc DEBUG: pathmap_dlopen %s return 0x%x\n", name, handle);
317 + printf("libsaproc DEBUG: pathmap_dlopen %s return 0x%lx\n", name, (unsigned long) handle);
318 318 }
319 319 return handle;
320 320 }
321 321
322 322 // libproc and libthread_db callback functions
323 323
324 324 extern "C" {
325 325
326 326 static int
327 327 init_libthread_db_ptrs(void *cd, const prmap_t *pmp, const char *object_name) {
328 328 Debugger* dbg = (Debugger*) cd;
329 329 JNIEnv* env = dbg->env;
330 330 jobject this_obj = dbg->this_obj;
331 331 struct ps_prochandle* ph = (struct ps_prochandle*) env->GetLongField(this_obj, p_ps_prochandle_ID);
332 332
333 333 char *s1 = 0, *s2 = 0;
334 334 char libthread_db[PATH_MAX];
335 335
336 336 if (strstr(object_name, "/libthread.so.") == NULL)
337 337 return (0);
338 338
339 339 /*
340 340 * We found a libthread.
341 341 * dlopen() the matching libthread_db and get the thread agent handle.
342 342 */
343 343 if (Pstatus(ph)->pr_dmodel == PR_MODEL_NATIVE) {
344 344 (void) strcpy(libthread_db, object_name);
345 345 s1 = (char*) strstr(object_name, ".so.");
346 346 s2 = (char*) strstr(libthread_db, ".so.");
347 347 (void) strcpy(s2, "_db");
348 348 s2 += 3;
349 349 (void) strcpy(s2, s1);
350 350 } else {
351 351 #ifdef _LP64
352 352 /*
353 353 * The victim process is 32-bit, we are 64-bit.
354 354 * We have to find the 64-bit version of libthread_db
355 355 * that matches the victim's 32-bit version of libthread.
356 356 */
357 357 (void) strcpy(libthread_db, object_name);
358 358 s1 = (char*) strstr(object_name, "/libthread.so.");
359 359 s2 = (char*) strstr(libthread_db, "/libthread.so.");
360 360 (void) strcpy(s2, "/64");
361 361 s2 += 3;
362 362 (void) strcpy(s2, s1);
363 363 s1 = (char*) strstr(s1, ".so.");
364 364 s2 = (char*) strstr(s2, ".so.");
365 365 (void) strcpy(s2, "_db");
366 366 s2 += 3;
367 367 (void) strcpy(s2, s1);
368 368 #else
369 369 return (0);
370 370 #endif /* _LP64 */
371 371 }
372 372
373 373 void* libthread_db_handle = 0;
374 374 if ((libthread_db_handle = pathmap_dlopen(libthread_db, RTLD_LAZY|RTLD_LOCAL)) == NULL) {
375 375 char errMsg[PATH_MAX + 256];
376 376 sprintf(errMsg, "Can't load %s!", libthread_db);
377 377 HANDLE_THREADDB_FAILURE_(errMsg, 0);
378 378 }
379 379 env->SetLongField(this_obj, libthread_db_handle_ID, (jlong)(uintptr_t)libthread_db_handle);
380 380
381 381 void* tmpPtr = 0;
382 382 tmpPtr = dlsym(libthread_db_handle, "td_init");
383 383 if (tmpPtr == 0) {
384 384 HANDLE_THREADDB_FAILURE_("dlsym failed on td_init!", 0);
385 385 }
386 386 env->SetLongField(this_obj, p_td_init_ID, (jlong)(uintptr_t) tmpPtr);
387 387
388 388 tmpPtr =dlsym(libthread_db_handle, "td_ta_new");
389 389 if (tmpPtr == 0) {
390 390 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_new!", 0);
391 391 }
392 392 env->SetLongField(this_obj, p_td_ta_new_ID, (jlong)(uintptr_t) tmpPtr);
393 393
394 394 tmpPtr = dlsym(libthread_db_handle, "td_ta_delete");
395 395 if (tmpPtr == 0) {
396 396 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_delete!", 0);
397 397 }
398 398 env->SetLongField(this_obj, p_td_ta_delete_ID, (jlong)(uintptr_t) tmpPtr);
399 399
400 400 tmpPtr = dlsym(libthread_db_handle, "td_ta_thr_iter");
401 401 if (tmpPtr == 0) {
402 402 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_thr_iter!", 0);
403 403 }
404 404 env->SetLongField(this_obj, p_td_ta_thr_iter_ID, (jlong)(uintptr_t) tmpPtr);
405 405
406 406 tmpPtr = dlsym(libthread_db_handle, "td_thr_get_info");
407 407 if (tmpPtr == 0) {
408 408 HANDLE_THREADDB_FAILURE_("dlsym failed on td_thr_get_info!", 0);
409 409 }
410 410 env->SetLongField(this_obj, p_td_thr_get_info_ID, (jlong)(uintptr_t) tmpPtr);
411 411
412 412 tmpPtr = dlsym(libthread_db_handle, "td_ta_map_id2thr");
413 413 if (tmpPtr == 0) {
414 414 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_map_id2thr!", 0);
415 415 }
416 416 env->SetLongField(this_obj, p_td_ta_map_id2thr_ID, (jlong)(uintptr_t) tmpPtr);
417 417
418 418 tmpPtr = dlsym(libthread_db_handle, "td_thr_getgregs");
419 419 if (tmpPtr == 0) {
420 420 HANDLE_THREADDB_FAILURE_("dlsym failed on td_thr_getgregs!", 0);
421 421 }
422 422 env->SetLongField(this_obj, p_td_thr_getgregs_ID, (jlong)(uintptr_t) tmpPtr);
423 423
424 424 return 1;
425 425 }
426 426
427 427 static int
428 428 fill_thread_list(const td_thrhandle_t *p_td_thragent_t, void* cd) {
429 429 DebuggerWithObject* dbgo = (DebuggerWithObject*) cd;
430 430 JNIEnv* env = dbgo->env;
431 431 jobject this_obj = dbgo->this_obj;
432 432 jobject list = dbgo->obj;
433 433
434 434 td_thrinfo_t thrinfo;
435 435 p_td_thr_get_info_t p_td_thr_get_info = (p_td_thr_get_info_t) env->GetLongField(this_obj, p_td_thr_get_info_ID);
436 436
437 437 if (p_td_thr_get_info(p_td_thragent_t, &thrinfo) != TD_OK)
438 438 return (0);
439 439
440 440 jobject threadProxy = env->CallObjectMethod(this_obj, getThreadForThreadId_ID, (jlong)(uintptr_t) thrinfo.ti_tid);
441 441 CHECK_EXCEPTION_(1);
442 442 env->CallBooleanMethod(list, listAdd_ID, threadProxy);
443 443 CHECK_EXCEPTION_(1);
444 444 return 0;
445 445 }
446 446
447 447 static int
448 448 fill_load_object_list(void *cd, const prmap_t* pmp, const char* obj_name) {
449 449
450 450 if (obj_name) {
451 451 DebuggerWithObject* dbgo = (DebuggerWithObject*) cd;
452 452 JNIEnv* env = dbgo->env;
453 453 jobject this_obj = dbgo->this_obj;
454 454 jobject list = dbgo->obj;
455 455
456 456 jstring objectName = env->NewStringUTF(obj_name);
457 457 CHECK_EXCEPTION_(1);
458 458
459 459 jlong mapSize = (jlong) pmp->pr_size;
460 460 jobject sharedObject = env->CallObjectMethod(this_obj, createLoadObject_ID,
461 461 objectName, mapSize, (jlong)(uintptr_t)pmp->pr_vaddr);
462 462 CHECK_EXCEPTION_(1);
463 463 env->CallBooleanMethod(list, listAdd_ID, sharedObject);
464 464 CHECK_EXCEPTION_(1);
465 465 }
466 466
467 467 return 0;
468 468 }
469 469
470 470 // Pstack_iter() proc_stack_f callback prior to Nevada-B159
471 471 static int
472 472 fill_cframe_list(void *cd, const prgregset_t regs, uint_t argc, const long *argv) {
473 473 DebuggerWith2Objects* dbgo2 = (DebuggerWith2Objects*) cd;
474 474 JNIEnv* env = dbgo2->env;
475 475 jobject this_obj = dbgo2->this_obj;
476 476 jobject curFrame = dbgo2->obj2;
477 477
478 478 jint pcRegIndex = env->GetIntField(this_obj, pcRegIndex_ID);
479 479 jint fpRegIndex = env->GetIntField(this_obj, fpRegIndex_ID);
480 480
481 481 jlong pc = (jlong) (uintptr_t) regs[pcRegIndex];
482 482 jlong fp = (jlong) (uintptr_t) regs[fpRegIndex];
483 483
484 484 dbgo2->obj2 = env->CallObjectMethod(this_obj, createSenderFrame_ID,
485 485 curFrame, pc, fp);
486 486 CHECK_EXCEPTION_(1);
487 487 if (dbgo2->obj == 0) {
488 488 dbgo2->obj = dbgo2->obj2;
489 489 }
490 490 return 0;
491 491 }
492 492
493 493 // Pstack_iter() proc_stack_f callback in Nevada-B159 or later
494 494 /*ARGSUSED*/
495 495 static int
496 496 wrapper_fill_cframe_list(void *cd, const prgregset_t regs, uint_t argc,
497 497 const long *argv, int frame_flags, int sig) {
498 498 return(fill_cframe_list(cd, regs, argc, argv));
499 499 }
500 500
501 501 // part of the class sharing workaround
502 502
503 503 // FIXME: !!HACK ALERT!!
504 504
505 505 // The format of sharing achive file header is needed to read shared heap
506 506 // file mappings. For now, I am hard coding portion of FileMapHeader here.
507 507 // Refer to filemap.hpp.
508 508
509 509 // FileMapHeader describes the shared space data in the file to be
510 510 // mapped. This structure gets written to a file. It is not a class, so
511 511 // that the compilers don't add any compiler-private data to it.
512 512
513 513 const int NUM_SHARED_MAPS = 4;
514 514
515 515 // Refer to FileMapInfo::_current_version in filemap.hpp
516 516 const int CURRENT_ARCHIVE_VERSION = 1;
517 517
518 518 struct FileMapHeader {
519 519 int _magic; // identify file type.
520 520 int _version; // (from enum, above.)
521 521 size_t _alignment; // how shared archive should be aligned
522 522
523 523
524 524 struct space_info {
525 525 int _file_offset; // sizeof(this) rounded to vm page size
526 526 char* _base; // copy-on-write base address
527 527 size_t _capacity; // for validity checking
528 528 size_t _used; // for setting space top on read
529 529
530 530 bool _read_only; // read only space?
531 531 bool _allow_exec; // executable code in space?
532 532
533 533 } _space[NUM_SHARED_MAPS];
534 534
535 535 // Ignore the rest of the FileMapHeader. We don't need those fields here.
536 536 };
537 537
538 538 static bool
539 539 read_jboolean(struct ps_prochandle* ph, psaddr_t addr, jboolean* pvalue) {
540 540 jboolean i;
541 541 if (ps_pread(ph, addr, &i, sizeof(i)) == PS_OK) {
542 542 *pvalue = i;
543 543 return true;
544 544 } else {
545 545 return false;
546 546 }
547 547 }
548 548
549 549 static bool
550 550 read_pointer(struct ps_prochandle* ph, psaddr_t addr, uintptr_t* pvalue) {
551 551 uintptr_t uip;
552 552 if (ps_pread(ph, addr, &uip, sizeof(uip)) == PS_OK) {
553 553 *pvalue = uip;
554 554 return true;
555 555 } else {
556 556 return false;
557 557 }
558 558 }
559 559
560 560 static bool
561 561 read_string(struct ps_prochandle* ph, psaddr_t addr, char* buf, size_t size) {
562 562 char ch = ' ';
563 563 size_t i = 0;
564 564
565 565 while (ch != '\0') {
566 566 if (ps_pread(ph, addr, &ch, sizeof(ch)) != PS_OK)
567 567 return false;
568 568
569 569 if (i < size - 1) {
570 570 buf[i] = ch;
571 571 } else { // smaller buffer
572 572 return false;
573 573 }
574 574
575 575 i++; addr++;
576 576 }
577 577
578 578 buf[i] = '\0';
579 579 return true;
580 580 }
581 581
582 582 #define USE_SHARED_SPACES_SYM "UseSharedSpaces"
583 583 // mangled symbol name for Arguments::SharedArchivePath
584 584 #define SHARED_ARCHIVE_PATH_SYM "__1cJArgumentsRSharedArchivePath_"
585 585
586 586 static int
587 587 init_classsharing_workaround(void *cd, const prmap_t* pmap, const char* obj_name) {
588 588 Debugger* dbg = (Debugger*) cd;
589 589 JNIEnv* env = dbg->env;
590 590 jobject this_obj = dbg->this_obj;
591 591 const char* jvm_name = 0;
592 592 if ((jvm_name = strstr(obj_name, "libjvm.so")) != NULL) {
593 593 jvm_name = obj_name;
594 594 } else {
595 595 return 0;
596 596 }
597 597
598 598 struct ps_prochandle* ph = (struct ps_prochandle*) env->GetLongField(this_obj, p_ps_prochandle_ID);
599 599
600 600 // initialize classes.jsa file descriptor field.
601 601 dbg->env->SetIntField(this_obj, classes_jsa_fd_ID, -1);
602 602
603 603 // check whether class sharing is on by reading variable "UseSharedSpaces"
604 604 psaddr_t useSharedSpacesAddr = 0;
605 605 ps_pglobal_lookup(ph, jvm_name, USE_SHARED_SPACES_SYM, &useSharedSpacesAddr);
606 606 if (useSharedSpacesAddr == 0) {
607 607 THROW_NEW_DEBUGGER_EXCEPTION_("can't find 'UseSharedSpaces' flag\n", 1);
608 608 }
609 609
610 610 // read the value of the flag "UseSharedSpaces"
611 611 // Since hotspot types are not available to build this library. So
612 612 // equivalent type "jboolean" is used to read the value of "UseSharedSpaces"
613 613 // which is same as hotspot type "bool".
614 614 jboolean value = 0;
615 615 if (read_jboolean(ph, useSharedSpacesAddr, &value) != true) {
616 616 THROW_NEW_DEBUGGER_EXCEPTION_("can't read 'UseSharedSpaces' flag", 1);
617 617 } else if ((int)value == 0) {
618 618 print_debug("UseSharedSpaces is false, assuming -Xshare:off!\n");
619 619 return 1;
620 620 }
621 621
622 622 char classes_jsa[PATH_MAX];
623 623 psaddr_t sharedArchivePathAddrAddr = 0;
624 624 ps_pglobal_lookup(ph, jvm_name, SHARED_ARCHIVE_PATH_SYM, &sharedArchivePathAddrAddr);
625 625 if (sharedArchivePathAddrAddr == 0) {
626 626 print_debug("can't find symbol 'Arguments::SharedArchivePath'\n");
627 627 THROW_NEW_DEBUGGER_EXCEPTION_("can't get shared archive path from debuggee", 1);
628 628 }
629 629
630 630 uintptr_t sharedArchivePathAddr = 0;
631 631 if (read_pointer(ph, sharedArchivePathAddrAddr, &sharedArchivePathAddr) != true) {
632 632 print_debug("can't find read pointer 'Arguments::SharedArchivePath'\n");
633 633 THROW_NEW_DEBUGGER_EXCEPTION_("can't get shared archive path from debuggee", 1);
634 634 }
635 635
636 636 if (read_string(ph, (psaddr_t)sharedArchivePathAddr, classes_jsa, sizeof(classes_jsa)) != true) {
637 637 print_debug("can't find read 'Arguments::SharedArchivePath' value\n");
638 638 THROW_NEW_DEBUGGER_EXCEPTION_("can't get shared archive path from debuggee", 1);
639 639 }
640 640
641 641 print_debug("looking for %s\n", classes_jsa);
642 642
643 643 // open the classes.jsa
644 644 int fd = libsaproc_open(classes_jsa, O_RDONLY);
645 645 if (fd < 0) {
646 646 char errMsg[ERR_MSG_SIZE];
647 647 sprintf(errMsg, "can't open shared archive file %s", classes_jsa);
648 648 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1);
649 649 } else {
650 650 print_debug("opened shared archive file %s\n", classes_jsa);
651 651 }
652 652
653 653 // parse classes.jsa
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654 654 struct FileMapHeader* pheader = (struct FileMapHeader*) malloc(sizeof(struct FileMapHeader));
655 655 if (pheader == NULL) {
656 656 close(fd);
657 657 THROW_NEW_DEBUGGER_EXCEPTION_("can't allocate memory for shared file map header", 1);
658 658 }
659 659
660 660 memset(pheader, 0, sizeof(struct FileMapHeader));
661 661 // read FileMapHeader
662 662 size_t n = read(fd, pheader, sizeof(struct FileMapHeader));
663 663 if (n != sizeof(struct FileMapHeader)) {
664 - free(pheader);
665 - close(fd);
666 664 char errMsg[ERR_MSG_SIZE];
667 665 sprintf(errMsg, "unable to read shared archive file map header from %s", classes_jsa);
666 + close(fd);
667 + free(pheader);
668 668 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1);
669 669 }
670 670
671 671 // check file magic
672 672 if (pheader->_magic != 0xf00baba2) {
673 - free(pheader);
674 - close(fd);
675 673 char errMsg[ERR_MSG_SIZE];
676 674 sprintf(errMsg, "%s has bad shared archive magic 0x%x, expecting 0xf00baba2",
677 675 classes_jsa, pheader->_magic);
676 + close(fd);
677 + free(pheader);
678 678 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1);
679 679 }
680 680
681 681 // check version
682 682 if (pheader->_version != CURRENT_ARCHIVE_VERSION) {
683 - free(pheader);
684 - close(fd);
685 683 char errMsg[ERR_MSG_SIZE];
686 684 sprintf(errMsg, "%s has wrong shared archive version %d, expecting %d",
687 685 classes_jsa, pheader->_version, CURRENT_ARCHIVE_VERSION);
686 + close(fd);
687 + free(pheader);
688 688 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1);
689 689 }
690 690
691 691 if (_libsaproc_debug) {
692 692 for (int m = 0; m < NUM_SHARED_MAPS; m++) {
693 693 print_debug("shared file offset %d mapped at 0x%lx, size = %ld, read only? = %d\n",
694 694 pheader->_space[m]._file_offset, pheader->_space[m]._base,
695 695 pheader->_space[m]._used, pheader->_space[m]._read_only);
696 696 }
697 697 }
698 698
699 699 // FIXME: For now, omitting other checks such as VM version etc.
700 700
701 701 // store class archive file fd and map header in debugger object fields
702 702 dbg->env->SetIntField(this_obj, classes_jsa_fd_ID, fd);
703 703 dbg->env->SetLongField(this_obj, p_file_map_header_ID, (jlong)(uintptr_t) pheader);
704 704 return 1;
705 705 }
706 706
707 707 } // extern "C"
708 708
709 709 // error messages for proc_arg_grab failure codes. The messages are
710 710 // modified versions of comments against corresponding #defines in
711 711 // libproc.h.
712 712 static const char* proc_arg_grab_errmsgs[] = {
713 713 "",
714 714 /* G_NOPROC */ "No such process",
715 715 /* G_NOCORE */ "No such core file",
716 716 /* G_NOPROCORCORE */ "No such process or core",
717 717 /* G_NOEXEC */ "Cannot locate executable file",
718 718 /* G_ZOMB */ "Zombie processs",
719 719 /* G_PERM */ "No permission to attach",
720 720 /* G_BUSY */ "Another process has already attached",
721 721 /* G_SYS */ "System process - can not attach",
722 722 /* G_SELF */ "Process is self - can't debug myself!",
723 723 /* G_INTR */ "Interrupt received while grabbing",
724 724 /* G_LP64 */ "debuggee is 64 bit, use java -d64 for debugger",
725 725 /* G_FORMAT */ "File is not an ELF format core file - corrupted core?",
726 726 /* G_ELF */ "Libelf error while parsing an ELF file",
727 727 /* G_NOTE */ "Required PT_NOTE Phdr not present - corrupted core?",
728 728 };
729 729
730 730 static void attach_internal(JNIEnv* env, jobject this_obj, jstring cmdLine, jboolean isProcess) {
731 731 jboolean isCopy;
732 732 int gcode;
733 733 const char* cmdLine_cstr = env->GetStringUTFChars(cmdLine, &isCopy);
734 734 CHECK_EXCEPTION;
735 735
736 736 // some older versions of libproc.so crash when trying to attach 32 bit
737 737 // debugger to 64 bit core file. check and throw error.
738 738 #ifndef _LP64
739 739 atoi(cmdLine_cstr);
740 740 if (errno) {
741 741 // core file
742 742 int core_fd;
743 743 if ((core_fd = open64(cmdLine_cstr, O_RDONLY)) >= 0) {
744 744 Elf32_Ehdr e32;
745 745 if (pread64(core_fd, &e32, sizeof (e32), 0) == sizeof (e32) &&
746 746 memcmp(&e32.e_ident[EI_MAG0], ELFMAG, SELFMAG) == 0 &&
747 747 e32.e_type == ET_CORE && e32.e_ident[EI_CLASS] == ELFCLASS64) {
748 748 close(core_fd);
749 749 THROW_NEW_DEBUGGER_EXCEPTION("debuggee is 64 bit, use java -d64 for debugger");
750 750 }
751 751 close(core_fd);
752 752 }
753 753 // all other conditions are handled by libproc.so.
754 754 }
755 755 #endif
756 756
757 757 // connect to process/core
758 758 struct ps_prochandle* ph = proc_arg_grab(cmdLine_cstr, (isProcess? PR_ARG_PIDS : PR_ARG_CORES), PGRAB_FORCE, &gcode);
759 759 env->ReleaseStringUTFChars(cmdLine, cmdLine_cstr);
760 760 if (! ph) {
761 761 if (gcode > 0 && gcode < sizeof(proc_arg_grab_errmsgs)/sizeof(const char*)) {
762 762 char errMsg[ERR_MSG_SIZE];
763 763 sprintf(errMsg, "Attach failed : %s", proc_arg_grab_errmsgs[gcode]);
764 764 THROW_NEW_DEBUGGER_EXCEPTION(errMsg);
765 765 } else {
766 766 if (_libsaproc_debug && gcode == G_STRANGE) {
767 767 perror("libsaproc DEBUG: ");
768 768 }
769 769 if (isProcess) {
770 770 THROW_NEW_DEBUGGER_EXCEPTION("Not able to attach to process!");
771 771 } else {
772 772 THROW_NEW_DEBUGGER_EXCEPTION("Not able to attach to core file!");
773 773 }
774 774 }
775 775 }
776 776
777 777 // even though libproc.so supports 64 bit debugger and 32 bit debuggee, we don't
778 778 // support such cross-bit-debugging. check for that combination and throw error.
779 779 #ifdef _LP64
780 780 int data_model;
781 781 if (ps_pdmodel(ph, &data_model) != PS_OK) {
782 782 Prelease(ph, PRELEASE_CLEAR);
783 783 THROW_NEW_DEBUGGER_EXCEPTION("can't determine debuggee data model (ILP32? or LP64?)");
784 784 }
785 785 if (data_model == PR_MODEL_ILP32) {
786 786 Prelease(ph, PRELEASE_CLEAR);
787 787 THROW_NEW_DEBUGGER_EXCEPTION("debuggee is 32 bit, use 32 bit java for debugger");
788 788 }
789 789 #endif
790 790
791 791 env->SetLongField(this_obj, p_ps_prochandle_ID, (jlong)(uintptr_t)ph);
792 792
793 793 Debugger dbg;
794 794 dbg.env = env;
795 795 dbg.this_obj = this_obj;
796 796 jthrowable exception = 0;
797 797 if (! isProcess) {
798 798 /*
799 799 * With class sharing, shared perm. gen heap is allocated in with MAP_SHARED|PROT_READ.
800 800 * These pages are mapped from the file "classes.jsa". MAP_SHARED pages are not dumped
801 801 * in Solaris core.To read shared heap pages, we have to read classes.jsa file.
802 802 */
803 803 Pobject_iter(ph, init_classsharing_workaround, &dbg);
804 804 exception = env->ExceptionOccurred();
805 805 if (exception) {
806 806 env->ExceptionClear();
807 807 detach_internal(env, this_obj);
808 808 env->Throw(exception);
809 809 return;
810 810 }
811 811 }
812 812
813 813 /*
814 814 * Iterate over the process mappings looking
815 815 * for libthread and then dlopen the appropriate
816 816 * libthread_db and get function pointers.
817 817 */
818 818 Pobject_iter(ph, init_libthread_db_ptrs, &dbg);
819 819 exception = env->ExceptionOccurred();
820 820 if (exception) {
821 821 env->ExceptionClear();
822 822 if (!sa_ignore_threaddb) {
823 823 detach_internal(env, this_obj);
824 824 env->Throw(exception);
825 825 }
826 826 return;
827 827 }
828 828
829 829 // init libthread_db and create thread_db agent
830 830 p_td_init_t p_td_init = (p_td_init_t) env->GetLongField(this_obj, p_td_init_ID);
831 831 if (p_td_init == 0) {
832 832 if (!sa_ignore_threaddb) {
833 833 detach_internal(env, this_obj);
834 834 }
835 835 HANDLE_THREADDB_FAILURE("Did not find libthread in target process/core!");
836 836 }
837 837
838 838 if (p_td_init() != TD_OK) {
839 839 if (!sa_ignore_threaddb) {
840 840 detach_internal(env, this_obj);
841 841 }
842 842 HANDLE_THREADDB_FAILURE("Can't initialize thread_db!");
843 843 }
844 844
845 845 p_td_ta_new_t p_td_ta_new = (p_td_ta_new_t) env->GetLongField(this_obj, p_td_ta_new_ID);
846 846
847 847 td_thragent_t *p_td_thragent_t = 0;
848 848 if (p_td_ta_new(ph, &p_td_thragent_t) != TD_OK) {
849 849 if (!sa_ignore_threaddb) {
850 850 detach_internal(env, this_obj);
851 851 }
852 852 HANDLE_THREADDB_FAILURE("Can't create thread_db agent!");
853 853 }
854 854 env->SetLongField(this_obj, p_td_thragent_t_ID, (jlong)(uintptr_t) p_td_thragent_t);
855 855
856 856 }
857 857
858 858 /*
859 859 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
860 860 * Method: attach0
861 861 * Signature: (Ljava/lang/String;)V
862 862 * Description: process detach
863 863 */
864 864 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_attach0__Ljava_lang_String_2
865 865 (JNIEnv *env, jobject this_obj, jstring pid) {
866 866 attach_internal(env, this_obj, pid, JNI_TRUE);
867 867 }
868 868
869 869 /*
870 870 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
871 871 * Method: attach0
872 872 * Signature: (Ljava/lang/String;Ljava/lang/String;)V
873 873 * Description: core file detach
874 874 */
875 875 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_attach0__Ljava_lang_String_2Ljava_lang_String_2
876 876 (JNIEnv *env, jobject this_obj, jstring executable, jstring corefile) {
877 877 // ignore executable file name, libproc.so can detect a.out name anyway.
878 878 attach_internal(env, this_obj, corefile, JNI_FALSE);
879 879 }
880 880
881 881
882 882 /*
883 883 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
884 884 * Method: detach0
885 885 * Signature: ()V
886 886 * Description: process/core file detach
887 887 */
888 888 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_detach0
889 889 (JNIEnv *env, jobject this_obj) {
890 890 detach_internal(env, this_obj);
891 891 }
892 892
893 893 /*
894 894 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
895 895 * Method: getRemoteProcessAddressSize0
896 896 * Signature: ()I
897 897 * Description: get process/core address size
898 898 */
899 899 JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getRemoteProcessAddressSize0
900 900 (JNIEnv *env, jobject this_obj) {
901 901 jlong p_ps_prochandle;
902 902 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
903 903 int data_model = PR_MODEL_ILP32;
904 904 ps_pdmodel((struct ps_prochandle*) p_ps_prochandle, &data_model);
905 905 print_debug("debuggee is %d bit\n", data_model == PR_MODEL_ILP32? 32 : 64);
906 906 return (jint) data_model == PR_MODEL_ILP32? 32 : 64;
907 907 }
908 908
909 909 /*
910 910 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
911 911 * Method: getPageSize0
912 912 * Signature: ()I
913 913 * Description: get process/core page size
914 914 */
915 915 JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getPageSize0
916 916 (JNIEnv *env, jobject this_obj) {
917 917
918 918 /*
919 919 We are not yet attached to a java process or core file. getPageSize is called from
920 920 the constructor of ProcDebuggerLocal. The following won't work!
921 921
922 922 jlong p_ps_prochandle;
923 923 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
924 924 CHECK_EXCEPTION_(-1);
925 925 struct ps_prochandle* prochandle = (struct ps_prochandle*) p_ps_prochandle;
926 926 return (Pstate(prochandle) == PS_DEAD) ? Pgetauxval(prochandle, AT_PAGESZ)
927 927 : getpagesize();
928 928
929 929 So even though core may have been generated with a different page size settings, for now
930 930 call getpagesize.
931 931 */
932 932
933 933 return getpagesize();
934 934 }
935 935
936 936 /*
937 937 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
938 938 * Method: getThreadIntegerRegisterSet0
939 939 * Signature: (J)[J
940 940 * Description: get gregset for a given thread specified by thread id
941 941 */
942 942 JNIEXPORT jlongArray JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getThreadIntegerRegisterSet0
943 943 (JNIEnv *env, jobject this_obj, jlong tid) {
944 944 // map the thread id to thread handle
945 945 p_td_ta_map_id2thr_t p_td_ta_map_id2thr = (p_td_ta_map_id2thr_t) env->GetLongField(this_obj, p_td_ta_map_id2thr_ID);
946 946
947 947 td_thragent_t* p_td_thragent_t = (td_thragent_t*) env->GetLongField(this_obj, p_td_thragent_t_ID);
948 948 if (p_td_thragent_t == 0) {
949 949 return 0;
950 950 }
951 951
952 952 td_thrhandle_t thr_handle;
953 953 if (p_td_ta_map_id2thr(p_td_thragent_t, (thread_t) tid, &thr_handle) != TD_OK) {
954 954 THROW_NEW_DEBUGGER_EXCEPTION_("can't map thread id to thread handle!", 0);
955 955 }
956 956
957 957 p_td_thr_getgregs_t p_td_thr_getgregs = (p_td_thr_getgregs_t) env->GetLongField(this_obj, p_td_thr_getgregs_ID);
958 958 prgregset_t gregs;
959 959 p_td_thr_getgregs(&thr_handle, gregs);
960 960
961 961 jlongArray res = env->NewLongArray(NPRGREG);
962 962 CHECK_EXCEPTION_(0);
963 963 jboolean isCopy;
964 964 jlong* ptr = env->GetLongArrayElements(res, &isCopy);
965 965 for (int i = 0; i < NPRGREG; i++) {
966 966 ptr[i] = (jlong) (uintptr_t) gregs[i];
967 967 }
968 968 env->ReleaseLongArrayElements(res, ptr, JNI_COMMIT);
969 969 return res;
970 970 }
971 971
972 972 /*
973 973 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
974 974 * Method: fillThreadList0
975 975 * Signature: (Ljava/util/List;)V
976 976 * Description: fills thread list of the debuggee process/core
977 977 */
978 978 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_fillThreadList0
979 979 (JNIEnv *env, jobject this_obj, jobject list) {
980 980
981 981 td_thragent_t* p_td_thragent_t = (td_thragent_t*) env->GetLongField(this_obj, p_td_thragent_t_ID);
982 982 if (p_td_thragent_t == 0) {
983 983 return;
984 984 }
985 985
986 986 p_td_ta_thr_iter_t p_td_ta_thr_iter = (p_td_ta_thr_iter_t) env->GetLongField(this_obj, p_td_ta_thr_iter_ID);
987 987
988 988 DebuggerWithObject dbgo;
989 989 dbgo.env = env;
990 990 dbgo.this_obj = this_obj;
991 991 dbgo.obj = list;
992 992
993 993 p_td_ta_thr_iter(p_td_thragent_t, fill_thread_list, &dbgo,
994 994 TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS);
995 995 }
996 996
997 997 #ifndef SOLARIS_11_B159_OR_LATER
998 998 // building on Nevada-B158 or earlier so more hoops to jump through
999 999 static bool has_newer_Pstack_iter = false; // older version by default
1000 1000 #endif
1001 1001
1002 1002 /*
1003 1003 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
1004 1004 * Method: fillCFrameList0
1005 1005 * Signature: ([J)Lsun/jvm/hotspot/debugger/proc/ProcCFrame;
1006 1006 * Description: fills CFrame list for a given thread
1007 1007 */
1008 1008 JNIEXPORT jobject JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_fillCFrameList0
1009 1009 (JNIEnv *env, jobject this_obj, jlongArray regsArray) {
1010 1010 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
1011 1011
1012 1012 DebuggerWith2Objects dbgo2;
1013 1013 dbgo2.env = env;
1014 1014 dbgo2.this_obj = this_obj;
1015 1015 dbgo2.obj = NULL;
1016 1016 dbgo2.obj2 = NULL;
1017 1017
1018 1018 jboolean isCopy;
1019 1019 jlong* ptr = env->GetLongArrayElements(regsArray, &isCopy);
1020 1020 CHECK_EXCEPTION_(0);
1021 1021
1022 1022 prgregset_t gregs;
1023 1023 for (int i = 0; i < NPRGREG; i++) {
1024 1024 gregs[i] = (uintptr_t) ptr[i];
1025 1025 }
1026 1026
1027 1027 env->ReleaseLongArrayElements(regsArray, ptr, JNI_ABORT);
1028 1028 CHECK_EXCEPTION_(0);
1029 1029
1030 1030 #ifdef SOLARIS_11_B159_OR_LATER
1031 1031 // building on Nevada-B159 or later so use the new callback
1032 1032 Pstack_iter((struct ps_prochandle*) p_ps_prochandle, gregs,
1033 1033 wrapper_fill_cframe_list, &dbgo2);
1034 1034 #else
1035 1035 // building on Nevada-B158 or earlier so figure out which callback to use
1036 1036
1037 1037 if (has_newer_Pstack_iter) {
1038 1038 // Since we're building on Nevada-B158 or earlier, we have to
1039 1039 // cast wrapper_fill_cframe_list to make the compiler happy.
1040 1040 Pstack_iter((struct ps_prochandle*) p_ps_prochandle, gregs,
1041 1041 (proc_stack_f *)wrapper_fill_cframe_list, &dbgo2);
1042 1042 } else {
1043 1043 Pstack_iter((struct ps_prochandle*) p_ps_prochandle, gregs,
1044 1044 fill_cframe_list, &dbgo2);
1045 1045 }
1046 1046 #endif // SOLARIS_11_B159_OR_LATER
1047 1047 return dbgo2.obj;
1048 1048 }
1049 1049
1050 1050 /*
1051 1051 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
1052 1052 * Method: fillLoadObjectList0
1053 1053 * Signature: (Ljava/util/List;)V
1054 1054 * Description: fills shared objects of the debuggee process/core
1055 1055 */
1056 1056 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_fillLoadObjectList0
1057 1057 (JNIEnv *env, jobject this_obj, jobject list) {
1058 1058 DebuggerWithObject dbgo;
1059 1059 dbgo.env = env;
1060 1060 dbgo.this_obj = this_obj;
1061 1061 dbgo.obj = list;
1062 1062
1063 1063 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
1064 1064 Pobject_iter((struct ps_prochandle*) p_ps_prochandle, fill_load_object_list, &dbgo);
1065 1065 }
1066 1066
1067 1067 /*
1068 1068 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
1069 1069 * Method: readBytesFromProcess0
1070 1070 * Signature: (JJ)[B
1071 1071 * Description: read bytes from debuggee process/core
1072 1072 */
1073 1073 JNIEXPORT jbyteArray JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_readBytesFromProcess0
1074 1074 (JNIEnv *env, jobject this_obj, jlong address, jlong numBytes) {
1075 1075
1076 1076 jbyteArray array = env->NewByteArray(numBytes);
1077 1077 CHECK_EXCEPTION_(0);
1078 1078 jboolean isCopy;
1079 1079 jbyte* bufPtr = env->GetByteArrayElements(array, &isCopy);
1080 1080 CHECK_EXCEPTION_(0);
1081 1081
1082 1082 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
1083 1083 ps_err_e ret = ps_pread((struct ps_prochandle*) p_ps_prochandle,
1084 1084 (psaddr_t)address, bufPtr, (size_t)numBytes);
1085 1085
1086 1086 if (ret != PS_OK) {
1087 1087 // part of the class sharing workaround. try shared heap area
1088 1088 int classes_jsa_fd = env->GetIntField(this_obj, classes_jsa_fd_ID);
1089 1089 if (classes_jsa_fd != -1 && address != (jlong)0) {
1090 1090 print_debug("read failed at 0x%lx, attempting shared heap area\n", (long) address);
1091 1091
1092 1092 struct FileMapHeader* pheader = (struct FileMapHeader*) env->GetLongField(this_obj, p_file_map_header_ID);
1093 1093 // walk through the shared mappings -- we just have 4 of them.
1094 1094 // so, linear walking is okay.
1095 1095 for (int m = 0; m < NUM_SHARED_MAPS; m++) {
1096 1096
1097 1097 // We can skip the non-read-only maps. These are mapped as MAP_PRIVATE
1098 1098 // and hence will be read by libproc. Besides, the file copy may be
1099 1099 // stale because the process might have modified those pages.
1100 1100 if (pheader->_space[m]._read_only) {
1101 1101 jlong baseAddress = (jlong) (uintptr_t) pheader->_space[m]._base;
1102 1102 size_t usedSize = pheader->_space[m]._used;
1103 1103 if (address >= baseAddress && address < (baseAddress + usedSize)) {
1104 1104 // the given address falls in this shared heap area
1105 1105 print_debug("found shared map at 0x%lx\n", (long) baseAddress);
1106 1106
1107 1107
1108 1108 // If more data is asked than actually mapped from file, we need to zero fill
1109 1109 // till the end-of-page boundary. But, java array new does that for us. we just
1110 1110 // need to read as much as data available.
1111 1111
1112 1112 #define MIN2(x, y) (((x) < (y))? (x) : (y))
1113 1113
1114 1114 jlong diff = address - baseAddress;
1115 1115 jlong bytesToRead = MIN2(numBytes, usedSize - diff);
1116 1116 off_t offset = pheader->_space[m]._file_offset + off_t(diff);
1117 1117 ssize_t bytesRead = pread(classes_jsa_fd, bufPtr, bytesToRead, offset);
1118 1118 if (bytesRead != bytesToRead) {
1119 1119 env->ReleaseByteArrayElements(array, bufPtr, JNI_ABORT);
1120 1120 print_debug("shared map read failed\n");
1121 1121 return jbyteArray(0);
1122 1122 } else {
1123 1123 print_debug("shared map read succeeded\n");
1124 1124 env->ReleaseByteArrayElements(array, bufPtr, 0);
1125 1125 return array;
1126 1126 }
1127 1127 } // is in current map
1128 1128 } // is read only map
1129 1129 } // for shared maps
1130 1130 } // classes_jsa_fd != -1
1131 1131 env->ReleaseByteArrayElements(array, bufPtr, JNI_ABORT);
1132 1132 return jbyteArray(0);
1133 1133 } else {
1134 1134 env->ReleaseByteArrayElements(array, bufPtr, 0);
1135 1135 return array;
1136 1136 }
1137 1137 }
1138 1138
1139 1139 /*
1140 1140 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
1141 1141 * Method: writeBytesToProcess0
1142 1142 * Signature: (JJ[B)V
1143 1143 * Description: write bytes into debugger process
1144 1144 */
1145 1145 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_writeBytesToProcess0
1146 1146 (JNIEnv *env, jobject this_obj, jlong address, jlong numBytes, jbyteArray data) {
1147 1147 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
1148 1148 jboolean isCopy;
1149 1149 jbyte* ptr = env->GetByteArrayElements(data, &isCopy);
1150 1150 CHECK_EXCEPTION;
1151 1151
1152 1152 if (ps_pwrite((struct ps_prochandle*) p_ps_prochandle, address, ptr, numBytes) != PS_OK) {
1153 1153 env->ReleaseByteArrayElements(data, ptr, JNI_ABORT);
1154 1154 THROW_NEW_DEBUGGER_EXCEPTION("Process write failed!");
1155 1155 }
1156 1156
1157 1157 env->ReleaseByteArrayElements(data, ptr, JNI_ABORT);
1158 1158 }
1159 1159
1160 1160 /*
1161 1161 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
1162 1162 * Method: suspend0
1163 1163 * Signature: ()V
1164 1164 */
1165 1165 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_suspend0
1166 1166 (JNIEnv *env, jobject this_obj) {
1167 1167 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
1168 1168 // for now don't check return value. revisit this again.
1169 1169 Pstop((struct ps_prochandle*) p_ps_prochandle, 1000);
1170 1170 }
1171 1171
1172 1172 /*
1173 1173 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
1174 1174 * Method: resume0
1175 1175 * Signature: ()V
1176 1176 */
1177 1177 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_resume0
1178 1178 (JNIEnv *env, jobject this_obj) {
1179 1179 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
1180 1180 // for now don't check return value. revisit this again.
1181 1181 Psetrun((struct ps_prochandle*) p_ps_prochandle, 0, PRCFAULT|PRSTOP);
1182 1182 }
1183 1183
1184 1184 /*
1185 1185 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
1186 1186 * Method: lookupByName0
1187 1187 * Signature: (Ljava/lang/String;Ljava/lang/String;)J
1188 1188 * Description: symbol lookup by name
1189 1189 */
1190 1190 JNIEXPORT jlong JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_lookupByName0
1191 1191 (JNIEnv *env, jobject this_obj, jstring objectName, jstring symbolName) {
1192 1192 jlong p_ps_prochandle;
1193 1193 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
1194 1194
1195 1195 jboolean isCopy;
1196 1196 const char* objectName_cstr = NULL;
1197 1197 if (objectName != NULL) {
1198 1198 objectName_cstr = env->GetStringUTFChars(objectName, &isCopy);
1199 1199 CHECK_EXCEPTION_(0);
1200 1200 } else {
1201 1201 objectName_cstr = PR_OBJ_EVERY;
1202 1202 }
1203 1203
1204 1204 const char* symbolName_cstr = env->GetStringUTFChars(symbolName, &isCopy);
1205 1205 CHECK_EXCEPTION_(0);
1206 1206
1207 1207 psaddr_t symbol_addr = (psaddr_t) 0;
1208 1208 ps_pglobal_lookup((struct ps_prochandle*) p_ps_prochandle, objectName_cstr,
1209 1209 symbolName_cstr, &symbol_addr);
1210 1210
1211 1211 if (symbol_addr == 0) {
1212 1212 print_debug("lookup for %s in %s failed\n", symbolName_cstr, objectName_cstr);
1213 1213 }
1214 1214
1215 1215 if (objectName_cstr != PR_OBJ_EVERY) {
1216 1216 env->ReleaseStringUTFChars(objectName, objectName_cstr);
1217 1217 }
1218 1218 env->ReleaseStringUTFChars(symbolName, symbolName_cstr);
1219 1219 return (jlong) (uintptr_t) symbol_addr;
1220 1220 }
1221 1221
1222 1222 /*
1223 1223 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
1224 1224 * Method: lookupByAddress0
1225 1225 * Signature: (J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol;
1226 1226 * Description: lookup symbol name for a given address
1227 1227 */
1228 1228 JNIEXPORT jobject JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_lookupByAddress0
1229 1229 (JNIEnv *env, jobject this_obj, jlong address) {
1230 1230 jlong p_ps_prochandle;
1231 1231 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
1232 1232
1233 1233 char nameBuf[SYMBOL_BUF_SIZE + 1];
1234 1234 GElf_Sym sym;
1235 1235 int res = Plookup_by_addr((struct ps_prochandle*) p_ps_prochandle, (uintptr_t) address,
1236 1236 nameBuf, sizeof(nameBuf), &sym);
1237 1237 if (res != 0) { // failed
1238 1238 return 0;
1239 1239 }
1240 1240
1241 1241 jstring resSym = env->NewStringUTF(nameBuf);
1242 1242 CHECK_EXCEPTION_(0);
1243 1243
1244 1244 return env->CallObjectMethod(this_obj, createClosestSymbol_ID, resSym, (address - sym.st_value));
1245 1245 }
1246 1246
1247 1247 /*
1248 1248 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
1249 1249 * Method: demangle0
1250 1250 * Signature: (Ljava/lang/String;)Ljava/lang/String;
1251 1251 */
1252 1252 JNIEXPORT jstring JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_demangle0
1253 1253 (JNIEnv *env, jobject this_object, jstring name) {
1254 1254 jboolean isCopy;
1255 1255 const char* ptr = env->GetStringUTFChars(name, &isCopy);
1256 1256 char buf[2*SYMBOL_BUF_SIZE + 1];
1257 1257 jstring res = 0;
1258 1258 if (cplus_demangle((char*) ptr, buf, sizeof(buf)) != DEMANGLE_ESPACE) {
1259 1259 res = env->NewStringUTF(buf);
1260 1260 } else {
1261 1261 res = name;
1262 1262 }
1263 1263 env->ReleaseStringUTFChars(name, ptr);
1264 1264 return res;
1265 1265 }
1266 1266
1267 1267 #ifndef SOLARIS_11_B159_OR_LATER
1268 1268 // Determine if the OS we're running on has the newer version
1269 1269 // of libproc's Pstack_iter.
1270 1270 //
1271 1271 // Set env var PSTACK_ITER_DEBUG=true to debug this logic.
1272 1272 // Set env var PSTACK_ITER_DEBUG_RELEASE to simulate a 'release' value.
1273 1273 // Set env var PSTACK_ITER_DEBUG_VERSION to simulate a 'version' value.
1274 1274 //
1275 1275 // frankenputer 'uname -r -v': 5.10 Generic_141445-09
1276 1276 // jurassic 'uname -r -v': 5.11 snv_164
1277 1277 // lonepeak 'uname -r -v': 5.11 snv_127
1278 1278 //
1279 1279 static void set_has_newer_Pstack_iter(JNIEnv *env) {
1280 1280 static bool done_set = false;
1281 1281
1282 1282 if (done_set) {
1283 1283 // already set has_newer_Pstack_iter
1284 1284 return;
1285 1285 }
1286 1286
1287 1287 struct utsname name;
1288 1288 if (uname(&name) == -1) {
1289 1289 THROW_NEW_DEBUGGER_EXCEPTION("uname() failed!");
1290 1290 }
1291 1291 dprintf_2("release='%s' version='%s'\n", name.release, name.version);
1292 1292
1293 1293 if (_Pstack_iter_debug) {
1294 1294 char *override = getenv("PSTACK_ITER_DEBUG_RELEASE");
1295 1295 if (override != NULL) {
1296 1296 strncpy(name.release, override, SYS_NMLN - 1);
1297 1297 name.release[SYS_NMLN - 2] = '\0';
1298 1298 dprintf_2("overriding with release='%s'\n", name.release);
1299 1299 }
1300 1300 override = getenv("PSTACK_ITER_DEBUG_VERSION");
1301 1301 if (override != NULL) {
1302 1302 strncpy(name.version, override, SYS_NMLN - 1);
1303 1303 name.version[SYS_NMLN - 2] = '\0';
1304 1304 dprintf_2("overriding with version='%s'\n", name.version);
1305 1305 }
1306 1306 }
1307 1307
1308 1308 // the major number corresponds to the old SunOS major number
1309 1309 int major = atoi(name.release);
1310 1310 if (major >= 6) {
1311 1311 dprintf_2("release is SunOS 6 or later\n");
1312 1312 has_newer_Pstack_iter = true;
1313 1313 done_set = true;
1314 1314 return;
1315 1315 }
1316 1316 if (major < 5) {
1317 1317 dprintf_2("release is SunOS 4 or earlier\n");
1318 1318 done_set = true;
1319 1319 return;
1320 1320 }
1321 1321
1322 1322 // some SunOS 5.* build so now check for Solaris versions
1323 1323 char *dot = strchr(name.release, '.');
1324 1324 int minor = 0;
1325 1325 if (dot != NULL) {
1326 1326 // release is major.minor format
1327 1327 *dot = NULL;
1328 1328 minor = atoi(dot + 1);
1329 1329 }
1330 1330
1331 1331 if (minor <= 10) {
1332 1332 dprintf_2("release is Solaris 10 or earlier\n");
1333 1333 done_set = true;
1334 1334 return;
1335 1335 } else if (minor >= 12) {
1336 1336 dprintf_2("release is Solaris 12 or later\n");
1337 1337 has_newer_Pstack_iter = true;
1338 1338 done_set = true;
1339 1339 return;
1340 1340 }
1341 1341
1342 1342 // some Solaris 11 build so now check for internal build numbers
1343 1343 if (strncmp(name.version, "snv_", 4) != 0) {
1344 1344 dprintf_2("release is Solaris 11 post-GA or later\n");
1345 1345 has_newer_Pstack_iter = true;
1346 1346 done_set = true;
1347 1347 return;
1348 1348 }
1349 1349
1350 1350 // version begins with "snv_" so a pre-GA build of Solaris 11
1351 1351 int build = atoi(&name.version[4]);
1352 1352 if (build >= 159) {
1353 1353 dprintf_2("release is Nevada-B159 or later\n");
1354 1354 has_newer_Pstack_iter = true;
1355 1355 } else {
1356 1356 dprintf_2("release is Nevada-B158 or earlier\n");
1357 1357 }
1358 1358
1359 1359 done_set = true;
1360 1360 }
1361 1361 #endif // !SOLARIS_11_B159_OR_LATER
1362 1362
1363 1363 /*
1364 1364 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
1365 1365 * Method: initIDs
1366 1366 * Signature: ()V
1367 1367 * Description: get JNI ids for fields and methods of ProcDebuggerLocal class
1368 1368 */
1369 1369 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_initIDs
1370 1370 (JNIEnv *env, jclass clazz) {
1371 1371 _libsaproc_debug = getenv("LIBSAPROC_DEBUG") != NULL;
1372 1372 if (_libsaproc_debug) {
1373 1373 // propagate debug mode to libproc.so
1374 1374 static const char* var = "LIBPROC_DEBUG=1";
1375 1375 putenv((char*)var);
1376 1376 }
1377 1377
1378 1378 void* libproc_handle = dlopen("libproc.so", RTLD_LAZY | RTLD_GLOBAL);
1379 1379 if (libproc_handle == 0)
1380 1380 THROW_NEW_DEBUGGER_EXCEPTION("can't load libproc.so, if you are using Solaris 5.7 or below, copy libproc.so from 5.8!");
1381 1381
1382 1382 #ifndef SOLARIS_11_B159_OR_LATER
1383 1383 _Pstack_iter_debug = getenv("PSTACK_ITER_DEBUG") != NULL;
1384 1384
1385 1385 set_has_newer_Pstack_iter(env);
1386 1386 CHECK_EXCEPTION;
1387 1387 dprintf_2("has_newer_Pstack_iter=%d\n", has_newer_Pstack_iter);
1388 1388 #endif
1389 1389
1390 1390 p_ps_prochandle_ID = env->GetFieldID(clazz, "p_ps_prochandle", "J");
1391 1391 CHECK_EXCEPTION;
1392 1392
1393 1393 libthread_db_handle_ID = env->GetFieldID(clazz, "libthread_db_handle", "J");
1394 1394 CHECK_EXCEPTION;
1395 1395
1396 1396 p_td_thragent_t_ID = env->GetFieldID(clazz, "p_td_thragent_t", "J");
1397 1397 CHECK_EXCEPTION;
1398 1398
1399 1399 p_td_init_ID = env->GetFieldID(clazz, "p_td_init", "J");
1400 1400 CHECK_EXCEPTION;
1401 1401
1402 1402 p_td_ta_new_ID = env->GetFieldID(clazz, "p_td_ta_new", "J");
1403 1403 CHECK_EXCEPTION;
1404 1404
1405 1405 p_td_ta_delete_ID = env->GetFieldID(clazz, "p_td_ta_delete", "J");
1406 1406 CHECK_EXCEPTION;
1407 1407
1408 1408 p_td_ta_thr_iter_ID = env->GetFieldID(clazz, "p_td_ta_thr_iter", "J");
1409 1409 CHECK_EXCEPTION;
1410 1410
1411 1411 p_td_thr_get_info_ID = env->GetFieldID(clazz, "p_td_thr_get_info", "J");
1412 1412 CHECK_EXCEPTION;
1413 1413
1414 1414 p_td_ta_map_id2thr_ID = env->GetFieldID(clazz, "p_td_ta_map_id2thr", "J");
1415 1415 CHECK_EXCEPTION;
1416 1416
1417 1417 p_td_thr_getgregs_ID = env->GetFieldID(clazz, "p_td_thr_getgregs", "J");
1418 1418 CHECK_EXCEPTION;
1419 1419
1420 1420 getThreadForThreadId_ID = env->GetMethodID(clazz,
1421 1421 "getThreadForThreadId", "(J)Lsun/jvm/hotspot/debugger/ThreadProxy;");
1422 1422 CHECK_EXCEPTION;
1423 1423
1424 1424 pcRegIndex_ID = env->GetFieldID(clazz, "pcRegIndex", "I");
1425 1425 CHECK_EXCEPTION;
1426 1426
1427 1427 fpRegIndex_ID = env->GetFieldID(clazz, "fpRegIndex", "I");
1428 1428 CHECK_EXCEPTION;
1429 1429
1430 1430 createSenderFrame_ID = env->GetMethodID(clazz,
1431 1431 "createSenderFrame", "(Lsun/jvm/hotspot/debugger/proc/ProcCFrame;JJ)Lsun/jvm/hotspot/debugger/proc/ProcCFrame;");
1432 1432 CHECK_EXCEPTION;
1433 1433
1434 1434 createLoadObject_ID = env->GetMethodID(clazz,
1435 1435 "createLoadObject", "(Ljava/lang/String;JJ)Lsun/jvm/hotspot/debugger/cdbg/LoadObject;");
1436 1436 CHECK_EXCEPTION;
1437 1437
1438 1438 createClosestSymbol_ID = env->GetMethodID(clazz,
1439 1439 "createClosestSymbol", "(Ljava/lang/String;J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol;");
1440 1440 CHECK_EXCEPTION;
1441 1441
1442 1442 listAdd_ID = env->GetMethodID(env->FindClass("java/util/List"), "add", "(Ljava/lang/Object;)Z");
1443 1443 CHECK_EXCEPTION;
1444 1444
1445 1445 // part of the class sharing workaround
1446 1446 classes_jsa_fd_ID = env->GetFieldID(clazz, "classes_jsa_fd", "I");
1447 1447 CHECK_EXCEPTION;
1448 1448 p_file_map_header_ID = env->GetFieldID(clazz, "p_file_map_header", "J");
1449 1449 CHECK_EXCEPTION;
1450 1450 }
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