Mercurial > hg > truffle
annotate agent/src/os/solaris/proc/saproc.cpp @ 579:0fbdb4381b99
6814575: Update copyright year
Summary: Update copyright for files that have been modified in 2009, up to 03/09
Reviewed-by: katleman, tbell, ohair
| author | xdono |
|---|---|
| date | Mon, 09 Mar 2009 13:28:46 -0700 |
| parents | 8db2b3e46c38 |
| children | a94af87c3357 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 579 | 2 * Copyright 2002-2009 Sun Microsystems, Inc. All Rights Reserved. |
| 0 | 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #include "salibproc.h" | |
| 26 #include "sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal.h" | |
| 27 #include <thread_db.h> | |
| 28 #include <strings.h> | |
| 29 #include <limits.h> | |
| 30 #include <demangle.h> | |
| 31 #include <stdarg.h> | |
| 32 #include <stdlib.h> | |
| 33 #include <errno.h> | |
| 34 | |
| 35 #define CHECK_EXCEPTION_(value) if(env->ExceptionOccurred()) { return value; } | |
| 36 #define CHECK_EXCEPTION if(env->ExceptionOccurred()) { return;} | |
| 37 #define THROW_NEW_DEBUGGER_EXCEPTION_(str, value) { throwNewDebuggerException(env, str); return value; } | |
| 38 #define THROW_NEW_DEBUGGER_EXCEPTION(str) { throwNewDebuggerException(env, str); return;} | |
| 39 | |
| 40 #define SYMBOL_BUF_SIZE 256 | |
| 41 #define ERR_MSG_SIZE (PATH_MAX + 256) | |
| 42 | |
| 43 // debug mode | |
| 44 static int _libsaproc_debug = 0; | |
| 45 | |
| 46 static void print_debug(const char* format,...) { | |
| 47 if (_libsaproc_debug) { | |
| 48 va_list alist; | |
| 49 | |
| 50 va_start(alist, format); | |
| 51 fputs("libsaproc DEBUG: ", stderr); | |
| 52 vfprintf(stderr, format, alist); | |
| 53 va_end(alist); | |
| 54 } | |
| 55 } | |
| 56 | |
| 57 struct Debugger { | |
| 58 JNIEnv* env; | |
| 59 jobject this_obj; | |
| 60 }; | |
| 61 | |
| 62 struct DebuggerWithObject : Debugger { | |
| 63 jobject obj; | |
| 64 }; | |
| 65 | |
| 66 struct DebuggerWith2Objects : DebuggerWithObject { | |
| 67 jobject obj2; | |
| 68 }; | |
| 69 | |
| 70 /* | |
| 71 * Portions of user thread level detail gathering code is from pstack source | |
| 72 * code. See pstack.c in Solaris 2.8 user commands source code. | |
| 73 */ | |
| 74 | |
| 75 static void throwNewDebuggerException(JNIEnv* env, const char* errMsg) { | |
| 76 env->ThrowNew(env->FindClass("sun/jvm/hotspot/debugger/DebuggerException"), errMsg); | |
| 77 } | |
| 78 | |
| 79 // JNI ids for some fields, methods | |
| 80 | |
| 81 // libproc handler pointer | |
| 82 static jfieldID p_ps_prochandle_ID = 0; | |
| 83 | |
| 84 // libthread.so dlopen handle, thread agent ptr and function pointers | |
| 85 static jfieldID libthread_db_handle_ID = 0; | |
| 86 static jfieldID p_td_thragent_t_ID = 0; | |
| 87 static jfieldID p_td_init_ID = 0; | |
| 88 static jfieldID p_td_ta_new_ID = 0; | |
| 89 static jfieldID p_td_ta_delete_ID = 0; | |
| 90 static jfieldID p_td_ta_thr_iter_ID = 0; | |
| 91 static jfieldID p_td_thr_get_info_ID = 0; | |
| 92 static jfieldID p_td_ta_map_id2thr_ID = 0; | |
| 93 static jfieldID p_td_thr_getgregs_ID = 0; | |
| 94 | |
| 95 // reg index fields | |
| 96 static jfieldID pcRegIndex_ID = 0; | |
| 97 static jfieldID fpRegIndex_ID = 0; | |
| 98 | |
| 99 // part of the class sharing workaround | |
| 100 static jfieldID classes_jsa_fd_ID = 0; | |
| 101 static jfieldID p_file_map_header_ID = 0; | |
| 102 | |
| 103 // method ids | |
| 104 | |
| 105 static jmethodID getThreadForThreadId_ID = 0; | |
| 106 static jmethodID createSenderFrame_ID = 0; | |
| 107 static jmethodID createLoadObject_ID = 0; | |
| 108 static jmethodID createClosestSymbol_ID = 0; | |
| 109 static jmethodID listAdd_ID = 0; | |
| 110 | |
| 111 /* | |
| 112 * Functions we need from libthread_db | |
| 113 */ | |
| 114 typedef td_err_e | |
| 115 (*p_td_init_t)(void); | |
| 116 typedef td_err_e | |
| 117 (*p_td_ta_new_t)(void *, td_thragent_t **); | |
| 118 typedef td_err_e | |
| 119 (*p_td_ta_delete_t)(td_thragent_t *); | |
| 120 typedef td_err_e | |
| 121 (*p_td_ta_thr_iter_t)(const td_thragent_t *, td_thr_iter_f *, void *, | |
| 122 td_thr_state_e, int, sigset_t *, unsigned); | |
| 123 typedef td_err_e | |
| 124 (*p_td_thr_get_info_t)(const td_thrhandle_t *, td_thrinfo_t *); | |
| 125 typedef td_err_e | |
| 126 (*p_td_ta_map_id2thr_t)(const td_thragent_t *, thread_t, td_thrhandle_t *); | |
| 127 typedef td_err_e | |
| 128 (*p_td_thr_getgregs_t)(const td_thrhandle_t *, prgregset_t); | |
| 129 | |
| 130 static void | |
| 131 clear_libthread_db_ptrs(JNIEnv* env, jobject this_obj) { | |
| 132 // release libthread_db agent, if we had created | |
| 133 p_td_ta_delete_t p_td_ta_delete = 0; | |
| 134 p_td_ta_delete = (p_td_ta_delete_t) env->GetLongField(this_obj, p_td_ta_delete_ID); | |
| 135 | |
| 136 td_thragent_t *p_td_thragent_t = 0; | |
| 137 p_td_thragent_t = (td_thragent_t*) env->GetLongField(this_obj, p_td_thragent_t_ID); | |
| 138 if (p_td_thragent_t != 0 && p_td_ta_delete != 0) { | |
| 139 p_td_ta_delete(p_td_thragent_t); | |
| 140 } | |
| 141 | |
| 142 // dlclose libthread_db.so | |
| 143 void* libthread_db_handle = (void*) env->GetLongField(this_obj, libthread_db_handle_ID); | |
| 144 if (libthread_db_handle != 0) { | |
| 145 dlclose(libthread_db_handle); | |
| 146 } | |
| 147 | |
| 148 env->SetLongField(this_obj, libthread_db_handle_ID, (jlong)0); | |
| 149 env->SetLongField(this_obj, p_td_init_ID, (jlong)0); | |
| 150 env->SetLongField(this_obj, p_td_ta_new_ID, (jlong)0); | |
| 151 env->SetLongField(this_obj, p_td_ta_delete_ID, (jlong)0); | |
| 152 env->SetLongField(this_obj, p_td_ta_thr_iter_ID, (jlong)0); | |
| 153 env->SetLongField(this_obj, p_td_thr_get_info_ID, (jlong)0); | |
| 154 env->SetLongField(this_obj, p_td_ta_map_id2thr_ID, (jlong)0); | |
| 155 env->SetLongField(this_obj, p_td_thr_getgregs_ID, (jlong)0); | |
| 156 } | |
| 157 | |
| 158 | |
| 159 static void detach_internal(JNIEnv* env, jobject this_obj) { | |
| 160 // clear libthread_db stuff | |
| 161 clear_libthread_db_ptrs(env, this_obj); | |
| 162 | |
| 163 // release ptr to ps_prochandle | |
| 164 jlong p_ps_prochandle; | |
| 165 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
| 166 if (p_ps_prochandle != 0L) { | |
| 167 Prelease((struct ps_prochandle*) p_ps_prochandle, PRELEASE_CLEAR); | |
| 168 } | |
| 169 | |
| 170 // part of the class sharing workaround | |
| 171 int classes_jsa_fd = env->GetIntField(this_obj, classes_jsa_fd_ID); | |
| 172 if (classes_jsa_fd != -1) { | |
| 173 close(classes_jsa_fd); | |
| 174 struct FileMapHeader* pheader = (struct FileMapHeader*) env->GetLongField(this_obj, p_file_map_header_ID); | |
| 175 if (pheader != NULL) { | |
| 176 free(pheader); | |
| 177 } | |
| 178 } | |
| 179 } | |
| 180 | |
| 181 // Is it okay to ignore libthread_db failure? Set env var to ignore | |
| 182 // libthread_db failure. You can still debug, but will miss threads | |
| 183 // related functionality. | |
| 184 static bool sa_ignore_threaddb = (getenv("SA_IGNORE_THREADDB") != 0); | |
| 185 | |
| 186 #define HANDLE_THREADDB_FAILURE(msg) \ | |
| 187 if (sa_ignore_threaddb) { \ | |
| 188 printf("libsaproc WARNING: %s\n", msg); \ | |
| 189 return; \ | |
| 190 } else { \ | |
| 191 THROW_NEW_DEBUGGER_EXCEPTION(msg); \ | |
| 192 } | |
| 193 | |
| 194 #define HANDLE_THREADDB_FAILURE_(msg, ret) \ | |
| 195 if (sa_ignore_threaddb) { \ | |
| 196 printf("libsaproc WARNING: %s\n", msg); \ | |
| 197 return ret; \ | |
| 198 } else { \ | |
| 199 THROW_NEW_DEBUGGER_EXCEPTION_(msg, ret); \ | |
| 200 } | |
| 201 | |
| 202 static const char * alt_root = NULL; | |
| 203 static int alt_root_len = -1; | |
| 204 | |
| 205 #define SA_ALTROOT "SA_ALTROOT" | |
| 206 | |
| 207 static void init_alt_root() { | |
| 208 if (alt_root_len == -1) { | |
| 209 alt_root = getenv(SA_ALTROOT); | |
| 210 if (alt_root) | |
| 211 alt_root_len = strlen(alt_root); | |
| 212 else | |
| 213 alt_root_len = 0; | |
| 214 } | |
| 215 } | |
| 216 | |
| 217 static int find_file_hook(const char * name, int elf_checksum) { | |
| 218 init_alt_root(); | |
| 219 | |
| 220 if (_libsaproc_debug) { | |
| 221 printf("libsaproc DEBUG: find_file_hook %s 0x%x\n", name, elf_checksum); | |
| 222 } | |
| 223 | |
| 224 if (alt_root_len > 0) { | |
| 225 int fd = -1; | |
| 226 char alt_path[PATH_MAX+1]; | |
| 227 | |
| 228 strcpy(alt_path, alt_root); | |
| 229 strcat(alt_path, name); | |
| 230 fd = open(alt_path, O_RDONLY); | |
| 231 if (fd >= 0) { | |
| 232 if (_libsaproc_debug) { | |
| 233 printf("libsaproc DEBUG: find_file_hook substituted %s\n", alt_path); | |
| 234 } | |
| 235 return fd; | |
| 236 } | |
| 237 | |
| 238 if (strrchr(name, '/')) { | |
| 239 strcpy(alt_path, alt_root); | |
| 240 strcat(alt_path, strrchr(name, '/')); | |
| 241 fd = open(alt_path, O_RDONLY); | |
| 242 if (fd >= 0) { | |
| 243 if (_libsaproc_debug) { | |
| 244 printf("libsaproc DEBUG: find_file_hook substituted %s\n", alt_path); | |
| 245 } | |
| 246 return fd; | |
| 247 } | |
| 248 } | |
| 249 } | |
| 250 return -1; | |
| 251 } | |
| 252 | |
| 253 static int pathmap_open(const char* name) { | |
| 254 int fd = open(name, O_RDONLY); | |
| 255 if (fd < 0) { | |
| 256 fd = find_file_hook(name, 0); | |
| 257 } | |
| 258 return fd; | |
| 259 } | |
| 260 | |
| 261 static void * pathmap_dlopen(const char * name, int mode) { | |
| 262 init_alt_root(); | |
| 263 | |
| 264 if (_libsaproc_debug) { | |
| 265 printf("libsaproc DEBUG: pathmap_dlopen %s\n", name); | |
| 266 } | |
| 267 | |
| 268 void * handle = NULL; | |
| 269 if (alt_root_len > 0) { | |
| 270 char alt_path[PATH_MAX+1]; | |
| 271 strcpy(alt_path, alt_root); | |
| 272 strcat(alt_path, name); | |
| 273 handle = dlopen(alt_path, mode); | |
| 274 if (_libsaproc_debug && handle) { | |
| 275 printf("libsaproc DEBUG: pathmap_dlopen substituted %s\n", alt_path); | |
| 276 } | |
| 277 | |
| 278 if (handle == NULL && strrchr(name, '/')) { | |
| 279 strcpy(alt_path, alt_root); | |
| 280 strcat(alt_path, strrchr(name, '/')); | |
| 281 handle = dlopen(alt_path, mode); | |
| 282 if (_libsaproc_debug && handle) { | |
| 283 printf("libsaproc DEBUG: pathmap_dlopen substituted %s\n", alt_path); | |
| 284 } | |
| 285 } | |
| 286 } | |
| 287 if (handle == NULL) { | |
| 288 handle = dlopen(name, mode); | |
| 289 } | |
| 290 if (_libsaproc_debug) { | |
| 291 printf("libsaproc DEBUG: pathmap_dlopen %s return 0x%x\n", name, handle); | |
| 292 } | |
| 293 return handle; | |
| 294 } | |
| 295 | |
| 296 // libproc and libthread_db callback functions | |
| 297 | |
| 298 extern "C" { | |
| 299 | |
| 300 static int | |
| 301 init_libthread_db_ptrs(void *cd, const prmap_t *pmp, const char *object_name) { | |
| 302 Debugger* dbg = (Debugger*) cd; | |
| 303 JNIEnv* env = dbg->env; | |
| 304 jobject this_obj = dbg->this_obj; | |
| 305 struct ps_prochandle* ph = (struct ps_prochandle*) env->GetLongField(this_obj, p_ps_prochandle_ID); | |
| 306 | |
| 307 char *s1 = 0, *s2 = 0; | |
| 308 char libthread_db[PATH_MAX]; | |
| 309 | |
| 310 if (strstr(object_name, "/libthread.so.") == NULL) | |
| 311 return (0); | |
| 312 | |
| 313 /* | |
| 314 * We found a libthread. | |
| 315 * dlopen() the matching libthread_db and get the thread agent handle. | |
| 316 */ | |
| 317 if (Pstatus(ph)->pr_dmodel == PR_MODEL_NATIVE) { | |
| 318 (void) strcpy(libthread_db, object_name); | |
| 319 s1 = (char*) strstr(object_name, ".so."); | |
| 320 s2 = (char*) strstr(libthread_db, ".so."); | |
| 321 (void) strcpy(s2, "_db"); | |
| 322 s2 += 3; | |
| 323 (void) strcpy(s2, s1); | |
| 324 } else { | |
| 325 #ifdef _LP64 | |
| 326 /* | |
| 327 * The victim process is 32-bit, we are 64-bit. | |
| 328 * We have to find the 64-bit version of libthread_db | |
| 329 * that matches the victim's 32-bit version of libthread. | |
| 330 */ | |
| 331 (void) strcpy(libthread_db, object_name); | |
| 332 s1 = (char*) strstr(object_name, "/libthread.so."); | |
| 333 s2 = (char*) strstr(libthread_db, "/libthread.so."); | |
| 334 (void) strcpy(s2, "/64"); | |
| 335 s2 += 3; | |
| 336 (void) strcpy(s2, s1); | |
| 337 s1 = (char*) strstr(s1, ".so."); | |
| 338 s2 = (char*) strstr(s2, ".so."); | |
| 339 (void) strcpy(s2, "_db"); | |
| 340 s2 += 3; | |
| 341 (void) strcpy(s2, s1); | |
| 342 #else | |
| 343 return (0); | |
| 344 #endif /* _LP64 */ | |
| 345 } | |
| 346 | |
| 347 void* libthread_db_handle = 0; | |
| 348 if ((libthread_db_handle = pathmap_dlopen(libthread_db, RTLD_LAZY|RTLD_LOCAL)) == NULL) { | |
| 349 char errMsg[PATH_MAX + 256]; | |
| 350 sprintf(errMsg, "Can't load %s!", libthread_db); | |
| 351 HANDLE_THREADDB_FAILURE_(errMsg, 0); | |
| 352 } | |
| 353 env->SetLongField(this_obj, libthread_db_handle_ID, (jlong)(uintptr_t)libthread_db_handle); | |
| 354 | |
| 355 void* tmpPtr = 0; | |
| 356 tmpPtr = dlsym(libthread_db_handle, "td_init"); | |
| 357 if (tmpPtr == 0) { | |
| 358 HANDLE_THREADDB_FAILURE_("dlsym failed on td_init!", 0); | |
| 359 } | |
| 360 env->SetLongField(this_obj, p_td_init_ID, (jlong)(uintptr_t) tmpPtr); | |
| 361 | |
| 362 tmpPtr =dlsym(libthread_db_handle, "td_ta_new"); | |
| 363 if (tmpPtr == 0) { | |
| 364 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_new!", 0); | |
| 365 } | |
| 366 env->SetLongField(this_obj, p_td_ta_new_ID, (jlong)(uintptr_t) tmpPtr); | |
| 367 | |
| 368 tmpPtr = dlsym(libthread_db_handle, "td_ta_delete"); | |
| 369 if (tmpPtr == 0) { | |
| 370 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_delete!", 0); | |
| 371 } | |
| 372 env->SetLongField(this_obj, p_td_ta_delete_ID, (jlong)(uintptr_t) tmpPtr); | |
| 373 | |
| 374 tmpPtr = dlsym(libthread_db_handle, "td_ta_thr_iter"); | |
| 375 if (tmpPtr == 0) { | |
| 376 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_thr_iter!", 0); | |
| 377 } | |
| 378 env->SetLongField(this_obj, p_td_ta_thr_iter_ID, (jlong)(uintptr_t) tmpPtr); | |
| 379 | |
| 380 tmpPtr = dlsym(libthread_db_handle, "td_thr_get_info"); | |
| 381 if (tmpPtr == 0) { | |
| 382 HANDLE_THREADDB_FAILURE_("dlsym failed on td_thr_get_info!", 0); | |
| 383 } | |
| 384 env->SetLongField(this_obj, p_td_thr_get_info_ID, (jlong)(uintptr_t) tmpPtr); | |
| 385 | |
| 386 tmpPtr = dlsym(libthread_db_handle, "td_ta_map_id2thr"); | |
| 387 if (tmpPtr == 0) { | |
| 388 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_map_id2thr!", 0); | |
| 389 } | |
| 390 env->SetLongField(this_obj, p_td_ta_map_id2thr_ID, (jlong)(uintptr_t) tmpPtr); | |
| 391 | |
| 392 tmpPtr = dlsym(libthread_db_handle, "td_thr_getgregs"); | |
| 393 if (tmpPtr == 0) { | |
| 394 HANDLE_THREADDB_FAILURE_("dlsym failed on td_thr_getgregs!", 0); | |
| 395 } | |
| 396 env->SetLongField(this_obj, p_td_thr_getgregs_ID, (jlong)(uintptr_t) tmpPtr); | |
| 397 | |
| 398 return 1; | |
| 399 } | |
| 400 | |
| 401 static int | |
| 402 fill_thread_list(const td_thrhandle_t *p_td_thragent_t, void* cd) { | |
| 403 DebuggerWithObject* dbgo = (DebuggerWithObject*) cd; | |
| 404 JNIEnv* env = dbgo->env; | |
| 405 jobject this_obj = dbgo->this_obj; | |
| 406 jobject list = dbgo->obj; | |
| 407 | |
| 408 td_thrinfo_t thrinfo; | |
| 409 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); | |
| 410 | |
| 411 if (p_td_thr_get_info(p_td_thragent_t, &thrinfo) != TD_OK) | |
| 412 return (0); | |
| 413 | |
| 414 jobject threadProxy = env->CallObjectMethod(this_obj, getThreadForThreadId_ID, (jlong)(uintptr_t) thrinfo.ti_tid); | |
| 415 CHECK_EXCEPTION_(1); | |
| 416 env->CallBooleanMethod(list, listAdd_ID, threadProxy); | |
| 417 CHECK_EXCEPTION_(1); | |
| 418 return 0; | |
| 419 } | |
| 420 | |
| 421 static int | |
| 422 fill_load_object_list(void *cd, const prmap_t* pmp, const char* obj_name) { | |
| 423 | |
| 424 if (obj_name) { | |
| 425 DebuggerWithObject* dbgo = (DebuggerWithObject*) cd; | |
| 426 JNIEnv* env = dbgo->env; | |
| 427 jobject this_obj = dbgo->this_obj; | |
| 428 jobject list = dbgo->obj; | |
| 429 | |
| 430 jstring objectName = env->NewStringUTF(obj_name); | |
| 431 CHECK_EXCEPTION_(1); | |
| 432 | |
| 433 jlong mapSize = (jlong) pmp->pr_size; | |
| 434 jobject sharedObject = env->CallObjectMethod(this_obj, createLoadObject_ID, | |
| 435 objectName, mapSize, (jlong)(uintptr_t)pmp->pr_vaddr); | |
| 436 CHECK_EXCEPTION_(1); | |
| 437 env->CallBooleanMethod(list, listAdd_ID, sharedObject); | |
| 438 CHECK_EXCEPTION_(1); | |
| 439 } | |
| 440 | |
| 441 return 0; | |
| 442 } | |
| 443 | |
| 444 static int | |
| 445 fill_cframe_list(void *cd, const prgregset_t regs, uint_t argc, const long *argv) { | |
| 446 DebuggerWith2Objects* dbgo2 = (DebuggerWith2Objects*) cd; | |
| 447 JNIEnv* env = dbgo2->env; | |
| 448 jobject this_obj = dbgo2->this_obj; | |
| 449 jobject curFrame = dbgo2->obj2; | |
| 450 | |
| 451 jint pcRegIndex = env->GetIntField(this_obj, pcRegIndex_ID); | |
| 452 jint fpRegIndex = env->GetIntField(this_obj, fpRegIndex_ID); | |
| 453 | |
| 454 jlong pc = (jlong) (uintptr_t) regs[pcRegIndex]; | |
| 455 jlong fp = (jlong) (uintptr_t) regs[fpRegIndex]; | |
| 456 | |
| 457 dbgo2->obj2 = env->CallObjectMethod(this_obj, createSenderFrame_ID, | |
| 458 curFrame, pc, fp); | |
| 459 CHECK_EXCEPTION_(1); | |
| 460 if (dbgo2->obj == 0) { | |
| 461 dbgo2->obj = dbgo2->obj2; | |
| 462 } | |
| 463 return 0; | |
| 464 } | |
| 465 | |
| 466 // part of the class sharing workaround | |
| 467 | |
| 468 // FIXME: !!HACK ALERT!! | |
| 469 | |
| 470 // The format of sharing achive file header is needed to read shared heap | |
| 471 // file mappings. For now, I am hard coding portion of FileMapHeader here. | |
| 472 // Refer to filemap.hpp. | |
| 473 | |
| 474 // FileMapHeader describes the shared space data in the file to be | |
| 475 // mapped. This structure gets written to a file. It is not a class, so | |
| 476 // that the compilers don't add any compiler-private data to it. | |
| 477 | |
| 478 // Refer to CompactingPermGenGen::n_regions in compactingPermGenGen.hpp | |
| 479 const int NUM_SHARED_MAPS = 4; | |
| 480 | |
| 481 // Refer to FileMapInfo::_current_version in filemap.hpp | |
| 482 const int CURRENT_ARCHIVE_VERSION = 1; | |
| 483 | |
| 484 struct FileMapHeader { | |
| 485 int _magic; // identify file type. | |
| 486 int _version; // (from enum, above.) | |
| 487 size_t _alignment; // how shared archive should be aligned | |
| 488 | |
| 489 | |
| 490 struct space_info { | |
| 491 int _file_offset; // sizeof(this) rounded to vm page size | |
| 492 char* _base; // copy-on-write base address | |
| 493 size_t _capacity; // for validity checking | |
| 494 size_t _used; // for setting space top on read | |
| 495 | |
| 496 bool _read_only; // read only space? | |
| 497 bool _allow_exec; // executable code in space? | |
| 498 | |
| 499 } _space[NUM_SHARED_MAPS]; // was _space[CompactingPermGenGen::n_regions]; | |
| 500 | |
| 501 // Ignore the rest of the FileMapHeader. We don't need those fields here. | |
| 502 }; | |
| 503 | |
| 504 static bool | |
|
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505 read_jboolean(struct ps_prochandle* ph, psaddr_t addr, jboolean* pvalue) { |
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506 jboolean i; |
| 0 | 507 if (ps_pread(ph, addr, &i, sizeof(i)) == PS_OK) { |
| 508 *pvalue = i; | |
| 509 return true; | |
| 510 } else { | |
| 511 return false; | |
| 512 } | |
| 513 } | |
| 514 | |
| 515 static bool | |
| 516 read_pointer(struct ps_prochandle* ph, psaddr_t addr, uintptr_t* pvalue) { | |
| 517 uintptr_t uip; | |
| 518 if (ps_pread(ph, addr, &uip, sizeof(uip)) == PS_OK) { | |
| 519 *pvalue = uip; | |
| 520 return true; | |
| 521 } else { | |
| 522 return false; | |
| 523 } | |
| 524 } | |
| 525 | |
| 526 static bool | |
| 527 read_string(struct ps_prochandle* ph, psaddr_t addr, char* buf, size_t size) { | |
| 528 char ch = ' '; | |
| 529 size_t i = 0; | |
| 530 | |
| 531 while (ch != '\0') { | |
| 532 if (ps_pread(ph, addr, &ch, sizeof(ch)) != PS_OK) | |
| 533 return false; | |
| 534 | |
| 535 if (i < size - 1) { | |
| 536 buf[i] = ch; | |
| 537 } else { // smaller buffer | |
| 538 return false; | |
| 539 } | |
| 540 | |
| 541 i++; addr++; | |
| 542 } | |
| 543 | |
| 544 buf[i] = '\0'; | |
| 545 return true; | |
| 546 } | |
| 547 | |
| 548 #define USE_SHARED_SPACES_SYM "UseSharedSpaces" | |
| 549 // mangled symbol name for Arguments::SharedArchivePath | |
| 550 #define SHARED_ARCHIVE_PATH_SYM "__1cJArgumentsRSharedArchivePath_" | |
| 551 | |
| 552 static int | |
| 553 init_classsharing_workaround(void *cd, const prmap_t* pmap, const char* obj_name) { | |
| 554 Debugger* dbg = (Debugger*) cd; | |
| 555 JNIEnv* env = dbg->env; | |
| 556 jobject this_obj = dbg->this_obj; | |
| 557 const char* jvm_name = 0; | |
| 558 if ((jvm_name = strstr(obj_name, "libjvm.so")) != NULL || | |
| 559 (jvm_name = strstr(obj_name, "libjvm_g.so")) != NULL) { | |
| 560 jvm_name = obj_name; | |
| 561 } else { | |
| 562 return 0; | |
| 563 } | |
| 564 | |
| 565 struct ps_prochandle* ph = (struct ps_prochandle*) env->GetLongField(this_obj, p_ps_prochandle_ID); | |
| 566 | |
| 567 // initialize classes[_g].jsa file descriptor field. | |
| 568 dbg->env->SetIntField(this_obj, classes_jsa_fd_ID, -1); | |
| 569 | |
| 570 // check whether class sharing is on by reading variable "UseSharedSpaces" | |
| 571 psaddr_t useSharedSpacesAddr = 0; | |
| 572 ps_pglobal_lookup(ph, jvm_name, USE_SHARED_SPACES_SYM, &useSharedSpacesAddr); | |
| 573 if (useSharedSpacesAddr == 0) { | |
| 574 THROW_NEW_DEBUGGER_EXCEPTION_("can't find 'UseSharedSpaces' flag\n", 1); | |
| 575 } | |
| 576 | |
| 577 // read the value of the flag "UseSharedSpaces" | |
|
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578 // Since hotspot types are not available to build this library. So |
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579 // equivalent type "jboolean" is used to read the value of "UseSharedSpaces" |
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580 // which is same as hotspot type "bool". |
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581 jboolean value = 0; |
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582 if (read_jboolean(ph, useSharedSpacesAddr, &value) != true) { |
| 0 | 583 THROW_NEW_DEBUGGER_EXCEPTION_("can't read 'UseSharedSpaces' flag", 1); |
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584 } else if ((int)value == 0) { |
| 0 | 585 print_debug("UseSharedSpaces is false, assuming -Xshare:off!\n"); |
| 586 return 1; | |
| 587 } | |
| 588 | |
| 589 char classes_jsa[PATH_MAX]; | |
| 590 psaddr_t sharedArchivePathAddrAddr = 0; | |
| 591 ps_pglobal_lookup(ph, jvm_name, SHARED_ARCHIVE_PATH_SYM, &sharedArchivePathAddrAddr); | |
| 592 if (sharedArchivePathAddrAddr == 0) { | |
| 593 print_debug("can't find symbol 'Arguments::SharedArchivePath'\n"); | |
| 594 THROW_NEW_DEBUGGER_EXCEPTION_("can't get shared archive path from debuggee", 1); | |
| 595 } | |
| 596 | |
| 597 uintptr_t sharedArchivePathAddr = 0; | |
| 598 if (read_pointer(ph, sharedArchivePathAddrAddr, &sharedArchivePathAddr) != true) { | |
| 599 print_debug("can't find read pointer 'Arguments::SharedArchivePath'\n"); | |
| 600 THROW_NEW_DEBUGGER_EXCEPTION_("can't get shared archive path from debuggee", 1); | |
| 601 } | |
| 602 | |
| 603 if (read_string(ph, (psaddr_t)sharedArchivePathAddr, classes_jsa, sizeof(classes_jsa)) != true) { | |
| 604 print_debug("can't find read 'Arguments::SharedArchivePath' value\n"); | |
| 605 THROW_NEW_DEBUGGER_EXCEPTION_("can't get shared archive path from debuggee", 1); | |
| 606 } | |
| 607 | |
| 608 print_debug("looking for %s\n", classes_jsa); | |
| 609 | |
| 610 // open the classes[_g].jsa | |
| 611 int fd = pathmap_open(classes_jsa); | |
| 612 if (fd < 0) { | |
| 613 char errMsg[ERR_MSG_SIZE]; | |
| 614 sprintf(errMsg, "can't open shared archive file %s", classes_jsa); | |
| 615 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1); | |
| 616 } else { | |
| 617 print_debug("opened shared archive file %s\n", classes_jsa); | |
| 618 } | |
| 619 | |
| 620 // parse classes[_g].jsa | |
| 621 struct FileMapHeader* pheader = (struct FileMapHeader*) malloc(sizeof(struct FileMapHeader)); | |
| 622 if (pheader == NULL) { | |
| 623 close(fd); | |
| 624 THROW_NEW_DEBUGGER_EXCEPTION_("can't allocate memory for shared file map header", 1); | |
| 625 } | |
| 626 | |
| 627 memset(pheader, 0, sizeof(struct FileMapHeader)); | |
| 628 // read FileMapHeader | |
| 629 size_t n = read(fd, pheader, sizeof(struct FileMapHeader)); | |
| 630 if (n != sizeof(struct FileMapHeader)) { | |
| 631 free(pheader); | |
| 632 close(fd); | |
| 633 char errMsg[ERR_MSG_SIZE]; | |
| 634 sprintf(errMsg, "unable to read shared archive file map header from %s", classes_jsa); | |
| 635 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1); | |
| 636 } | |
| 637 | |
| 638 // check file magic | |
| 639 if (pheader->_magic != 0xf00baba2) { | |
| 640 free(pheader); | |
| 641 close(fd); | |
| 642 char errMsg[ERR_MSG_SIZE]; | |
| 643 sprintf(errMsg, "%s has bad shared archive magic 0x%x, expecting 0xf00baba2", | |
| 644 classes_jsa, pheader->_magic); | |
| 645 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1); | |
| 646 } | |
| 647 | |
| 648 // check version | |
| 649 if (pheader->_version != CURRENT_ARCHIVE_VERSION) { | |
| 650 free(pheader); | |
| 651 close(fd); | |
| 652 char errMsg[ERR_MSG_SIZE]; | |
| 653 sprintf(errMsg, "%s has wrong shared archive version %d, expecting %d", | |
| 654 classes_jsa, pheader->_version, CURRENT_ARCHIVE_VERSION); | |
| 655 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1); | |
| 656 } | |
| 657 | |
| 658 if (_libsaproc_debug) { | |
| 659 for (int m = 0; m < NUM_SHARED_MAPS; m++) { | |
| 660 print_debug("shared file offset %d mapped at 0x%lx, size = %ld, read only? = %d\n", | |
| 661 pheader->_space[m]._file_offset, pheader->_space[m]._base, | |
| 662 pheader->_space[m]._used, pheader->_space[m]._read_only); | |
| 663 } | |
| 664 } | |
| 665 | |
| 666 // FIXME: For now, omitting other checks such as VM version etc. | |
| 667 | |
| 668 // store class archive file fd and map header in debugger object fields | |
| 669 dbg->env->SetIntField(this_obj, classes_jsa_fd_ID, fd); | |
| 670 dbg->env->SetLongField(this_obj, p_file_map_header_ID, (jlong)(uintptr_t) pheader); | |
| 671 return 1; | |
| 672 } | |
| 673 | |
| 674 } // extern "C" | |
| 675 | |
| 676 // error messages for proc_arg_grab failure codes. The messages are | |
| 677 // modified versions of comments against corresponding #defines in | |
| 678 // libproc.h. | |
| 679 static const char* proc_arg_grab_errmsgs[] = { | |
| 680 "", | |
| 681 /* G_NOPROC */ "No such process", | |
| 682 /* G_NOCORE */ "No such core file", | |
| 683 /* G_NOPROCORCORE */ "No such process or core", | |
| 684 /* G_NOEXEC */ "Cannot locate executable file", | |
| 685 /* G_ZOMB */ "Zombie processs", | |
| 686 /* G_PERM */ "No permission to attach", | |
| 687 /* G_BUSY */ "Another process has already attached", | |
| 688 /* G_SYS */ "System process - can not attach", | |
| 689 /* G_SELF */ "Process is self - can't debug myself!", | |
| 690 /* G_INTR */ "Interrupt received while grabbing", | |
| 691 /* G_LP64 */ "debuggee is 64 bit, use java -d64 for debugger", | |
| 692 /* G_FORMAT */ "File is not an ELF format core file - corrupted core?", | |
| 693 /* G_ELF */ "Libelf error while parsing an ELF file", | |
| 694 /* G_NOTE */ "Required PT_NOTE Phdr not present - corrupted core?", | |
| 695 }; | |
| 696 | |
| 697 static void attach_internal(JNIEnv* env, jobject this_obj, jstring cmdLine, jboolean isProcess) { | |
| 698 jboolean isCopy; | |
| 699 int gcode; | |
| 700 const char* cmdLine_cstr = env->GetStringUTFChars(cmdLine, &isCopy); | |
| 701 CHECK_EXCEPTION; | |
| 702 | |
| 703 // some older versions of libproc.so crash when trying to attach 32 bit | |
| 704 // debugger to 64 bit core file. check and throw error. | |
| 705 #ifndef _LP64 | |
| 706 atoi(cmdLine_cstr); | |
| 707 if (errno) { | |
| 708 // core file | |
| 709 int core_fd; | |
| 710 if ((core_fd = open64(cmdLine_cstr, O_RDONLY)) >= 0) { | |
| 711 Elf32_Ehdr e32; | |
| 712 if (pread64(core_fd, &e32, sizeof (e32), 0) == sizeof (e32) && | |
| 713 memcmp(&e32.e_ident[EI_MAG0], ELFMAG, SELFMAG) == 0 && | |
| 714 e32.e_type == ET_CORE && e32.e_ident[EI_CLASS] == ELFCLASS64) { | |
| 715 close(core_fd); | |
| 716 THROW_NEW_DEBUGGER_EXCEPTION("debuggee is 64 bit, use java -d64 for debugger"); | |
| 717 } | |
| 718 close(core_fd); | |
| 719 } | |
| 720 // all other conditions are handled by libproc.so. | |
| 721 } | |
| 722 #endif | |
| 723 | |
| 724 // connect to process/core | |
| 725 struct ps_prochandle* ph = proc_arg_grab(cmdLine_cstr, (isProcess? PR_ARG_PIDS : PR_ARG_CORES), PGRAB_FORCE, &gcode); | |
| 726 env->ReleaseStringUTFChars(cmdLine, cmdLine_cstr); | |
| 727 if (! ph) { | |
| 728 if (gcode > 0 && gcode < sizeof(proc_arg_grab_errmsgs)/sizeof(const char*)) { | |
| 729 char errMsg[ERR_MSG_SIZE]; | |
| 730 sprintf(errMsg, "Attach failed : %s", proc_arg_grab_errmsgs[gcode]); | |
| 731 THROW_NEW_DEBUGGER_EXCEPTION(errMsg); | |
| 732 } else { | |
| 733 if (_libsaproc_debug && gcode == G_STRANGE) { | |
| 734 perror("libsaproc DEBUG: "); | |
| 735 } | |
| 736 if (isProcess) { | |
| 737 THROW_NEW_DEBUGGER_EXCEPTION("Not able to attach to process!"); | |
| 738 } else { | |
| 739 THROW_NEW_DEBUGGER_EXCEPTION("Not able to attach to core file!"); | |
| 740 } | |
| 741 } | |
| 742 } | |
| 743 | |
| 744 // even though libproc.so supports 64 bit debugger and 32 bit debuggee, we don't | |
| 745 // support such cross-bit-debugging. check for that combination and throw error. | |
| 746 #ifdef _LP64 | |
| 747 int data_model; | |
| 748 if (ps_pdmodel(ph, &data_model) != PS_OK) { | |
| 749 Prelease(ph, PRELEASE_CLEAR); | |
| 750 THROW_NEW_DEBUGGER_EXCEPTION("can't determine debuggee data model (ILP32? or LP64?)"); | |
| 751 } | |
| 752 if (data_model == PR_MODEL_ILP32) { | |
| 753 Prelease(ph, PRELEASE_CLEAR); | |
| 754 THROW_NEW_DEBUGGER_EXCEPTION("debuggee is 32 bit, use 32 bit java for debugger"); | |
| 755 } | |
| 756 #endif | |
| 757 | |
| 758 env->SetLongField(this_obj, p_ps_prochandle_ID, (jlong)(uintptr_t)ph); | |
| 759 | |
| 760 Debugger dbg; | |
| 761 dbg.env = env; | |
| 762 dbg.this_obj = this_obj; | |
| 763 jthrowable exception = 0; | |
| 764 if (! isProcess) { | |
| 765 /* | |
| 766 * With class sharing, shared perm. gen heap is allocated in with MAP_SHARED|PROT_READ. | |
| 767 * These pages are mapped from the file "classes[_g].jsa". MAP_SHARED pages are not dumped | |
| 768 * in Solaris core.To read shared heap pages, we have to read classes[_g].jsa file. | |
| 769 */ | |
| 770 Pobject_iter(ph, init_classsharing_workaround, &dbg); | |
| 771 exception = env->ExceptionOccurred(); | |
| 772 if (exception) { | |
| 773 env->ExceptionClear(); | |
| 774 detach_internal(env, this_obj); | |
| 775 env->Throw(exception); | |
| 776 return; | |
| 777 } | |
| 778 } | |
| 779 | |
| 780 /* | |
| 781 * Iterate over the process mappings looking | |
| 782 * for libthread and then dlopen the appropriate | |
| 783 * libthread_db and get function pointers. | |
| 784 */ | |
| 785 Pobject_iter(ph, init_libthread_db_ptrs, &dbg); | |
| 786 exception = env->ExceptionOccurred(); | |
| 787 if (exception) { | |
| 788 env->ExceptionClear(); | |
| 789 if (!sa_ignore_threaddb) { | |
| 790 detach_internal(env, this_obj); | |
| 791 env->Throw(exception); | |
| 792 } | |
| 793 return; | |
| 794 } | |
| 795 | |
| 796 // init libthread_db and create thread_db agent | |
| 797 p_td_init_t p_td_init = (p_td_init_t) env->GetLongField(this_obj, p_td_init_ID); | |
| 798 if (p_td_init == 0) { | |
| 799 if (!sa_ignore_threaddb) { | |
| 800 detach_internal(env, this_obj); | |
| 801 } | |
| 802 HANDLE_THREADDB_FAILURE("Did not find libthread in target process/core!"); | |
| 803 } | |
| 804 | |
| 805 if (p_td_init() != TD_OK) { | |
| 806 if (!sa_ignore_threaddb) { | |
| 807 detach_internal(env, this_obj); | |
| 808 } | |
| 809 HANDLE_THREADDB_FAILURE("Can't initialize thread_db!"); | |
| 810 } | |
| 811 | |
| 812 p_td_ta_new_t p_td_ta_new = (p_td_ta_new_t) env->GetLongField(this_obj, p_td_ta_new_ID); | |
| 813 | |
| 814 td_thragent_t *p_td_thragent_t = 0; | |
| 815 if (p_td_ta_new(ph, &p_td_thragent_t) != TD_OK) { | |
| 816 if (!sa_ignore_threaddb) { | |
| 817 detach_internal(env, this_obj); | |
| 818 } | |
| 819 HANDLE_THREADDB_FAILURE("Can't create thread_db agent!"); | |
| 820 } | |
| 821 env->SetLongField(this_obj, p_td_thragent_t_ID, (jlong)(uintptr_t) p_td_thragent_t); | |
| 822 | |
| 823 } | |
| 824 | |
| 825 /* | |
| 826 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
| 827 * Method: attach0 | |
| 828 * Signature: (Ljava/lang/String;)V | |
| 829 * Description: process detach | |
| 830 */ | |
| 831 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_attach0__Ljava_lang_String_2 | |
| 832 (JNIEnv *env, jobject this_obj, jstring pid) { | |
| 833 attach_internal(env, this_obj, pid, JNI_TRUE); | |
| 834 } | |
| 835 | |
| 836 /* | |
| 837 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
| 838 * Method: attach0 | |
| 839 * Signature: (Ljava/lang/String;Ljava/lang/String;)V | |
| 840 * Description: core file detach | |
| 841 */ | |
| 842 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_attach0__Ljava_lang_String_2Ljava_lang_String_2 | |
| 843 (JNIEnv *env, jobject this_obj, jstring executable, jstring corefile) { | |
| 844 // ignore executable file name, libproc.so can detect a.out name anyway. | |
| 845 attach_internal(env, this_obj, corefile, JNI_FALSE); | |
| 846 } | |
| 847 | |
| 848 | |
| 849 /* | |
| 850 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
| 851 * Method: detach0 | |
| 852 * Signature: ()V | |
| 853 * Description: process/core file detach | |
| 854 */ | |
| 855 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_detach0 | |
| 856 (JNIEnv *env, jobject this_obj) { | |
| 857 detach_internal(env, this_obj); | |
| 858 } | |
| 859 | |
| 860 /* | |
| 861 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
| 862 * Method: getRemoteProcessAddressSize0 | |
| 863 * Signature: ()I | |
| 864 * Description: get process/core address size | |
| 865 */ | |
| 866 JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getRemoteProcessAddressSize0 | |
| 867 (JNIEnv *env, jobject this_obj) { | |
| 868 jlong p_ps_prochandle; | |
| 869 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
| 870 int data_model = PR_MODEL_ILP32; | |
| 871 ps_pdmodel((struct ps_prochandle*) p_ps_prochandle, &data_model); | |
| 872 print_debug("debuggee is %d bit\n", data_model == PR_MODEL_ILP32? 32 : 64); | |
| 873 return (jint) data_model == PR_MODEL_ILP32? 32 : 64; | |
| 874 } | |
| 875 | |
| 876 /* | |
| 877 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
| 878 * Method: getPageSize0 | |
| 879 * Signature: ()I | |
| 880 * Description: get process/core page size | |
| 881 */ | |
| 882 JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getPageSize0 | |
| 883 (JNIEnv *env, jobject this_obj) { | |
| 884 | |
| 885 /* | |
| 886 We are not yet attached to a java process or core file. getPageSize is called from | |
| 887 the constructor of ProcDebuggerLocal. The following won't work! | |
| 888 | |
| 889 jlong p_ps_prochandle; | |
| 890 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
| 891 CHECK_EXCEPTION_(-1); | |
| 892 struct ps_prochandle* prochandle = (struct ps_prochandle*) p_ps_prochandle; | |
| 893 return (Pstate(prochandle) == PS_DEAD) ? Pgetauxval(prochandle, AT_PAGESZ) | |
| 894 : getpagesize(); | |
| 895 | |
| 896 So even though core may have been generated with a different page size settings, for now | |
| 897 call getpagesize. | |
| 898 */ | |
| 899 | |
| 900 return getpagesize(); | |
| 901 } | |
| 902 | |
| 903 /* | |
| 904 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
| 905 * Method: getThreadIntegerRegisterSet0 | |
| 906 * Signature: (J)[J | |
| 907 * Description: get gregset for a given thread specified by thread id | |
| 908 */ | |
| 909 JNIEXPORT jlongArray JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getThreadIntegerRegisterSet0 | |
| 910 (JNIEnv *env, jobject this_obj, jlong tid) { | |
| 911 // map the thread id to thread handle | |
| 912 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); | |
| 913 | |
| 914 td_thragent_t* p_td_thragent_t = (td_thragent_t*) env->GetLongField(this_obj, p_td_thragent_t_ID); | |
| 915 if (p_td_thragent_t == 0) { | |
| 916 return 0; | |
| 917 } | |
| 918 | |
| 919 td_thrhandle_t thr_handle; | |
| 920 if (p_td_ta_map_id2thr(p_td_thragent_t, (thread_t) tid, &thr_handle) != TD_OK) { | |
| 921 THROW_NEW_DEBUGGER_EXCEPTION_("can't map thread id to thread handle!", 0); | |
| 922 } | |
| 923 | |
| 924 p_td_thr_getgregs_t p_td_thr_getgregs = (p_td_thr_getgregs_t) env->GetLongField(this_obj, p_td_thr_getgregs_ID); | |
| 925 prgregset_t gregs; | |
| 926 p_td_thr_getgregs(&thr_handle, gregs); | |
| 927 | |
| 928 jlongArray res = env->NewLongArray(NPRGREG); | |
| 929 CHECK_EXCEPTION_(0); | |
| 930 jboolean isCopy; | |
| 931 jlong* ptr = env->GetLongArrayElements(res, &isCopy); | |
| 932 for (int i = 0; i < NPRGREG; i++) { | |
| 933 ptr[i] = (jlong) (uintptr_t) gregs[i]; | |
| 934 } | |
| 935 env->ReleaseLongArrayElements(res, ptr, JNI_COMMIT); | |
| 936 return res; | |
| 937 } | |
| 938 | |
| 939 /* | |
| 940 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
| 941 * Method: fillThreadList0 | |
| 942 * Signature: (Ljava/util/List;)V | |
| 943 * Description: fills thread list of the debuggee process/core | |
| 944 */ | |
| 945 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_fillThreadList0 | |
| 946 (JNIEnv *env, jobject this_obj, jobject list) { | |
| 947 | |
| 948 td_thragent_t* p_td_thragent_t = (td_thragent_t*) env->GetLongField(this_obj, p_td_thragent_t_ID); | |
| 949 if (p_td_thragent_t == 0) { | |
| 950 return; | |
| 951 } | |
| 952 | |
| 953 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); | |
| 954 | |
| 955 DebuggerWithObject dbgo; | |
| 956 dbgo.env = env; | |
| 957 dbgo.this_obj = this_obj; | |
| 958 dbgo.obj = list; | |
| 959 | |
| 960 p_td_ta_thr_iter(p_td_thragent_t, fill_thread_list, &dbgo, | |
| 961 TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
| 962 } | |
| 963 | |
| 964 /* | |
| 965 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
| 966 * Method: fillCFrameList0 | |
| 967 * Signature: ([J)Lsun/jvm/hotspot/debugger/proc/ProcCFrame; | |
| 968 * Description: fills CFrame list for a given thread | |
| 969 */ | |
| 970 JNIEXPORT jobject JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_fillCFrameList0 | |
| 971 (JNIEnv *env, jobject this_obj, jlongArray regsArray) { | |
| 972 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
| 973 | |
| 974 DebuggerWith2Objects dbgo2; | |
| 975 dbgo2.env = env; | |
| 976 dbgo2.this_obj = this_obj; | |
| 977 dbgo2.obj = NULL; | |
| 978 dbgo2.obj2 = NULL; | |
| 979 | |
| 980 jboolean isCopy; | |
| 981 jlong* ptr = env->GetLongArrayElements(regsArray, &isCopy); | |
| 982 CHECK_EXCEPTION_(0); | |
| 983 | |
| 984 prgregset_t gregs; | |
| 985 for (int i = 0; i < NPRGREG; i++) { | |
| 986 gregs[i] = (uintptr_t) ptr[i]; | |
| 987 } | |
| 988 | |
| 989 env->ReleaseLongArrayElements(regsArray, ptr, JNI_ABORT); | |
| 990 CHECK_EXCEPTION_(0); | |
| 991 Pstack_iter((struct ps_prochandle*) p_ps_prochandle, gregs, fill_cframe_list, &dbgo2); | |
| 992 return dbgo2.obj; | |
| 993 } | |
| 994 | |
| 995 /* | |
| 996 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
| 997 * Method: fillLoadObjectList0 | |
| 998 * Signature: (Ljava/util/List;)V | |
| 999 * Description: fills shared objects of the debuggee process/core | |
| 1000 */ | |
| 1001 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_fillLoadObjectList0 | |
| 1002 (JNIEnv *env, jobject this_obj, jobject list) { | |
| 1003 DebuggerWithObject dbgo; | |
| 1004 dbgo.env = env; | |
| 1005 dbgo.this_obj = this_obj; | |
| 1006 dbgo.obj = list; | |
| 1007 | |
| 1008 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
| 1009 Pobject_iter((struct ps_prochandle*) p_ps_prochandle, fill_load_object_list, &dbgo); | |
| 1010 } | |
| 1011 | |
| 1012 /* | |
| 1013 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
| 1014 * Method: readBytesFromProcess0 | |
| 1015 * Signature: (JJ)[B | |
| 1016 * Description: read bytes from debuggee process/core | |
| 1017 */ | |
| 1018 JNIEXPORT jbyteArray JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_readBytesFromProcess0 | |
| 1019 (JNIEnv *env, jobject this_obj, jlong address, jlong numBytes) { | |
| 1020 | |
| 1021 jbyteArray array = env->NewByteArray(numBytes); | |
| 1022 CHECK_EXCEPTION_(0); | |
| 1023 jboolean isCopy; | |
| 1024 jbyte* bufPtr = env->GetByteArrayElements(array, &isCopy); | |
| 1025 CHECK_EXCEPTION_(0); | |
| 1026 | |
| 1027 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
| 1028 ps_err_e ret = ps_pread((struct ps_prochandle*) p_ps_prochandle, | |
| 1029 (psaddr_t)address, bufPtr, (size_t)numBytes); | |
| 1030 | |
| 1031 if (ret != PS_OK) { | |
| 1032 // part of the class sharing workaround. try shared heap area | |
| 1033 int classes_jsa_fd = env->GetIntField(this_obj, classes_jsa_fd_ID); | |
| 1034 if (classes_jsa_fd != -1 && address != (jlong)0) { | |
| 1035 print_debug("read failed at 0x%lx, attempting shared heap area\n", (long) address); | |
| 1036 | |
| 1037 struct FileMapHeader* pheader = (struct FileMapHeader*) env->GetLongField(this_obj, p_file_map_header_ID); | |
| 1038 // walk through the shared mappings -- we just have 4 of them. | |
| 1039 // so, linear walking is okay. | |
| 1040 for (int m = 0; m < NUM_SHARED_MAPS; m++) { | |
| 1041 | |
| 1042 // We can skip the non-read-only maps. These are mapped as MAP_PRIVATE | |
| 1043 // and hence will be read by libproc. Besides, the file copy may be | |
| 1044 // stale because the process might have modified those pages. | |
| 1045 if (pheader->_space[m]._read_only) { | |
| 1046 jlong baseAddress = (jlong) (uintptr_t) pheader->_space[m]._base; | |
| 1047 size_t usedSize = pheader->_space[m]._used; | |
| 1048 if (address >= baseAddress && address < (baseAddress + usedSize)) { | |
| 1049 // the given address falls in this shared heap area | |
| 1050 print_debug("found shared map at 0x%lx\n", (long) baseAddress); | |
| 1051 | |
| 1052 | |
| 1053 // If more data is asked than actually mapped from file, we need to zero fill | |
| 1054 // till the end-of-page boundary. But, java array new does that for us. we just | |
| 1055 // need to read as much as data available. | |
| 1056 | |
| 1057 #define MIN2(x, y) (((x) < (y))? (x) : (y)) | |
| 1058 | |
| 1059 jlong diff = address - baseAddress; | |
| 1060 jlong bytesToRead = MIN2(numBytes, usedSize - diff); | |
| 1061 off_t offset = pheader->_space[m]._file_offset + off_t(diff); | |
| 1062 ssize_t bytesRead = pread(classes_jsa_fd, bufPtr, bytesToRead, offset); | |
| 1063 if (bytesRead != bytesToRead) { | |
| 1064 env->ReleaseByteArrayElements(array, bufPtr, JNI_ABORT); | |
| 1065 print_debug("shared map read failed\n"); | |
| 1066 return jbyteArray(0); | |
| 1067 } else { | |
| 1068 print_debug("shared map read succeeded\n"); | |
| 1069 env->ReleaseByteArrayElements(array, bufPtr, 0); | |
| 1070 return array; | |
| 1071 } | |
| 1072 } // is in current map | |
| 1073 } // is read only map | |
| 1074 } // for shared maps | |
| 1075 } // classes_jsa_fd != -1 | |
| 1076 env->ReleaseByteArrayElements(array, bufPtr, JNI_ABORT); | |
| 1077 return jbyteArray(0); | |
| 1078 } else { | |
| 1079 env->ReleaseByteArrayElements(array, bufPtr, 0); | |
| 1080 return array; | |
| 1081 } | |
| 1082 } | |
| 1083 | |
| 1084 /* | |
| 1085 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
| 1086 * Method: writeBytesToProcess0 | |
| 1087 * Signature: (JJ[B)V | |
| 1088 * Description: write bytes into debugger process | |
| 1089 */ | |
| 1090 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_writeBytesToProcess0 | |
| 1091 (JNIEnv *env, jobject this_obj, jlong address, jlong numBytes, jbyteArray data) { | |
| 1092 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
| 1093 jboolean isCopy; | |
| 1094 jbyte* ptr = env->GetByteArrayElements(data, &isCopy); | |
| 1095 CHECK_EXCEPTION; | |
| 1096 | |
| 1097 if (ps_pwrite((struct ps_prochandle*) p_ps_prochandle, address, ptr, numBytes) != PS_OK) { | |
| 1098 env->ReleaseByteArrayElements(data, ptr, JNI_ABORT); | |
| 1099 THROW_NEW_DEBUGGER_EXCEPTION("Process write failed!"); | |
| 1100 } | |
| 1101 | |
| 1102 env->ReleaseByteArrayElements(data, ptr, JNI_ABORT); | |
| 1103 } | |
| 1104 | |
| 1105 /* | |
| 1106 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
| 1107 * Method: suspend0 | |
| 1108 * Signature: ()V | |
| 1109 */ | |
| 1110 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_suspend0 | |
| 1111 (JNIEnv *env, jobject this_obj) { | |
| 1112 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
| 1113 // for now don't check return value. revisit this again. | |
| 1114 Pstop((struct ps_prochandle*) p_ps_prochandle, 1000); | |
| 1115 } | |
| 1116 | |
| 1117 /* | |
| 1118 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
| 1119 * Method: resume0 | |
| 1120 * Signature: ()V | |
| 1121 */ | |
| 1122 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_resume0 | |
| 1123 (JNIEnv *env, jobject this_obj) { | |
| 1124 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
| 1125 // for now don't check return value. revisit this again. | |
| 1126 Psetrun((struct ps_prochandle*) p_ps_prochandle, 0, PRCFAULT|PRSTOP); | |
| 1127 } | |
| 1128 | |
| 1129 /* | |
| 1130 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
| 1131 * Method: lookupByName0 | |
| 1132 * Signature: (Ljava/lang/String;Ljava/lang/String;)J | |
| 1133 * Description: symbol lookup by name | |
| 1134 */ | |
| 1135 JNIEXPORT jlong JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_lookupByName0 | |
| 1136 (JNIEnv *env, jobject this_obj, jstring objectName, jstring symbolName) { | |
| 1137 jlong p_ps_prochandle; | |
| 1138 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
| 1139 | |
| 1140 jboolean isCopy; | |
| 1141 const char* objectName_cstr = NULL; | |
| 1142 if (objectName != NULL) { | |
| 1143 objectName_cstr = env->GetStringUTFChars(objectName, &isCopy); | |
| 1144 CHECK_EXCEPTION_(0); | |
| 1145 } else { | |
| 1146 objectName_cstr = PR_OBJ_EVERY; | |
| 1147 } | |
| 1148 | |
| 1149 const char* symbolName_cstr = env->GetStringUTFChars(symbolName, &isCopy); | |
| 1150 CHECK_EXCEPTION_(0); | |
| 1151 | |
| 1152 psaddr_t symbol_addr = (psaddr_t) 0; | |
| 1153 ps_pglobal_lookup((struct ps_prochandle*) p_ps_prochandle, objectName_cstr, | |
| 1154 symbolName_cstr, &symbol_addr); | |
| 1155 | |
| 1156 if (symbol_addr == 0) { | |
| 1157 print_debug("lookup for %s in %s failed\n", symbolName_cstr, objectName_cstr); | |
| 1158 } | |
| 1159 | |
| 1160 if (objectName_cstr != PR_OBJ_EVERY) { | |
| 1161 env->ReleaseStringUTFChars(objectName, objectName_cstr); | |
| 1162 } | |
| 1163 env->ReleaseStringUTFChars(symbolName, symbolName_cstr); | |
| 1164 return (jlong) (uintptr_t) symbol_addr; | |
| 1165 } | |
| 1166 | |
| 1167 /* | |
| 1168 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
| 1169 * Method: lookupByAddress0 | |
| 1170 * Signature: (J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol; | |
| 1171 * Description: lookup symbol name for a given address | |
| 1172 */ | |
| 1173 JNIEXPORT jobject JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_lookupByAddress0 | |
| 1174 (JNIEnv *env, jobject this_obj, jlong address) { | |
| 1175 jlong p_ps_prochandle; | |
| 1176 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
| 1177 | |
| 1178 char nameBuf[SYMBOL_BUF_SIZE + 1]; | |
| 1179 GElf_Sym sym; | |
| 1180 int res = Plookup_by_addr((struct ps_prochandle*) p_ps_prochandle, (uintptr_t) address, | |
| 1181 nameBuf, sizeof(nameBuf), &sym); | |
| 1182 if (res != 0) { // failed | |
| 1183 return 0; | |
| 1184 } | |
| 1185 | |
| 1186 jstring resSym = env->NewStringUTF(nameBuf); | |
| 1187 CHECK_EXCEPTION_(0); | |
| 1188 | |
| 1189 return env->CallObjectMethod(this_obj, createClosestSymbol_ID, resSym, (address - sym.st_value)); | |
| 1190 } | |
| 1191 | |
| 1192 /* | |
| 1193 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
| 1194 * Method: demangle0 | |
| 1195 * Signature: (Ljava/lang/String;)Ljava/lang/String; | |
| 1196 */ | |
| 1197 JNIEXPORT jstring JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_demangle0 | |
| 1198 (JNIEnv *env, jobject this_object, jstring name) { | |
| 1199 jboolean isCopy; | |
| 1200 const char* ptr = env->GetStringUTFChars(name, &isCopy); | |
| 1201 char buf[2*SYMBOL_BUF_SIZE + 1]; | |
| 1202 jstring res = 0; | |
| 1203 if (cplus_demangle((char*) ptr, buf, sizeof(buf)) != DEMANGLE_ESPACE) { | |
| 1204 res = env->NewStringUTF(buf); | |
| 1205 } else { | |
| 1206 res = name; | |
| 1207 } | |
| 1208 env->ReleaseStringUTFChars(name, ptr); | |
| 1209 return res; | |
| 1210 } | |
| 1211 | |
| 1212 typedef int (*find_file_hook_t)(const char *, int elf_checksum); | |
| 1213 | |
| 1214 /* | |
| 1215 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
| 1216 * Method: initIDs | |
| 1217 * Signature: ()V | |
| 1218 * Description: get JNI ids for fields and methods of ProcDebuggerLocal class | |
| 1219 */ | |
| 1220 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_initIDs | |
| 1221 (JNIEnv *env, jclass clazz) { | |
| 1222 _libsaproc_debug = getenv("LIBSAPROC_DEBUG") != NULL; | |
| 1223 if (_libsaproc_debug) { | |
| 1224 // propagate debug mode to libproc.so | |
| 1225 static const char* var = "LIBPROC_DEBUG=1"; | |
| 1226 putenv((char*)var); | |
| 1227 } | |
| 1228 | |
| 1229 void* libproc_handle = dlopen("libproc.so", RTLD_LAZY | RTLD_GLOBAL); | |
| 1230 if (libproc_handle == 0) | |
| 1231 THROW_NEW_DEBUGGER_EXCEPTION("can't load libproc.so, if you are using Solaris 5.7 or below, copy libproc.so from 5.8!"); | |
| 1232 | |
| 1233 // If possible, set shared object find file hook. | |
| 1234 void (*set_hook)(find_file_hook_t) = (void(*)(find_file_hook_t))dlsym(libproc_handle, "Pset_find_file_hook"); | |
| 1235 if (set_hook) { | |
| 1236 // we found find file hook symbol, set up our hook function. | |
| 1237 set_hook(find_file_hook); | |
| 1238 } else if (getenv(SA_ALTROOT)) { | |
| 1239 printf("libsaproc WARNING: %s set, but can't set file hook. " \ | |
| 1240 "Did you use right version of libproc.so?\n", SA_ALTROOT); | |
| 1241 } | |
| 1242 | |
| 1243 p_ps_prochandle_ID = env->GetFieldID(clazz, "p_ps_prochandle", "J"); | |
| 1244 CHECK_EXCEPTION; | |
| 1245 | |
| 1246 libthread_db_handle_ID = env->GetFieldID(clazz, "libthread_db_handle", "J"); | |
| 1247 CHECK_EXCEPTION; | |
| 1248 | |
| 1249 p_td_thragent_t_ID = env->GetFieldID(clazz, "p_td_thragent_t", "J"); | |
| 1250 CHECK_EXCEPTION; | |
| 1251 | |
| 1252 p_td_init_ID = env->GetFieldID(clazz, "p_td_init", "J"); | |
| 1253 CHECK_EXCEPTION; | |
| 1254 | |
| 1255 p_td_ta_new_ID = env->GetFieldID(clazz, "p_td_ta_new", "J"); | |
| 1256 CHECK_EXCEPTION; | |
| 1257 | |
| 1258 p_td_ta_delete_ID = env->GetFieldID(clazz, "p_td_ta_delete", "J"); | |
| 1259 CHECK_EXCEPTION; | |
| 1260 | |
| 1261 p_td_ta_thr_iter_ID = env->GetFieldID(clazz, "p_td_ta_thr_iter", "J"); | |
| 1262 CHECK_EXCEPTION; | |
| 1263 | |
| 1264 p_td_thr_get_info_ID = env->GetFieldID(clazz, "p_td_thr_get_info", "J"); | |
| 1265 CHECK_EXCEPTION; | |
| 1266 | |
| 1267 p_td_ta_map_id2thr_ID = env->GetFieldID(clazz, "p_td_ta_map_id2thr", "J"); | |
| 1268 CHECK_EXCEPTION; | |
| 1269 | |
| 1270 p_td_thr_getgregs_ID = env->GetFieldID(clazz, "p_td_thr_getgregs", "J"); | |
| 1271 CHECK_EXCEPTION; | |
| 1272 | |
| 1273 getThreadForThreadId_ID = env->GetMethodID(clazz, | |
| 1274 "getThreadForThreadId", "(J)Lsun/jvm/hotspot/debugger/ThreadProxy;"); | |
| 1275 CHECK_EXCEPTION; | |
| 1276 | |
| 1277 pcRegIndex_ID = env->GetFieldID(clazz, "pcRegIndex", "I"); | |
| 1278 CHECK_EXCEPTION; | |
| 1279 | |
| 1280 fpRegIndex_ID = env->GetFieldID(clazz, "fpRegIndex", "I"); | |
| 1281 CHECK_EXCEPTION; | |
| 1282 | |
| 1283 createSenderFrame_ID = env->GetMethodID(clazz, | |
| 1284 "createSenderFrame", "(Lsun/jvm/hotspot/debugger/proc/ProcCFrame;JJ)Lsun/jvm/hotspot/debugger/proc/ProcCFrame;"); | |
| 1285 CHECK_EXCEPTION; | |
| 1286 | |
| 1287 createLoadObject_ID = env->GetMethodID(clazz, | |
| 1288 "createLoadObject", "(Ljava/lang/String;JJ)Lsun/jvm/hotspot/debugger/cdbg/LoadObject;"); | |
| 1289 CHECK_EXCEPTION; | |
| 1290 | |
| 1291 createClosestSymbol_ID = env->GetMethodID(clazz, | |
| 1292 "createClosestSymbol", "(Ljava/lang/String;J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol;"); | |
| 1293 CHECK_EXCEPTION; | |
| 1294 | |
| 1295 listAdd_ID = env->GetMethodID(env->FindClass("java/util/List"), "add", "(Ljava/lang/Object;)Z"); | |
| 1296 CHECK_EXCEPTION; | |
| 1297 | |
| 1298 // part of the class sharing workaround | |
| 1299 classes_jsa_fd_ID = env->GetFieldID(clazz, "classes_jsa_fd", "I"); | |
| 1300 CHECK_EXCEPTION; | |
| 1301 p_file_map_header_ID = env->GetFieldID(clazz, "p_file_map_header", "J"); | |
| 1302 CHECK_EXCEPTION; | |
| 1303 } |