Mercurial > hg > truffle
annotate agent/src/os/solaris/proc/saproc.cpp @ 17877:17b2fbdb6637
8038297: Avoid placing CTI immediately following cbcond instruction on T4
Summary: Insert a nop between cbcond and CTI
Reviewed-by: kvn, twisti
author | iveresov |
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date | Thu, 10 Apr 2014 23:15:13 -0700 |
parents | 55fb97c4c58d |
children | 4ca6dc0799b6 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2002, 2013, Oracle and/or its affiliates. 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 #include "salibproc.h" | |
26 #include "sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal.h" | |
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27 #ifndef SOLARIS_11_B159_OR_LATER |
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28 #include <sys/utsname.h> |
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29 #endif |
0 | 30 #include <thread_db.h> |
31 #include <strings.h> | |
32 #include <limits.h> | |
33 #include <demangle.h> | |
34 #include <stdarg.h> | |
35 #include <stdlib.h> | |
36 #include <errno.h> | |
37 | |
38 #define CHECK_EXCEPTION_(value) if(env->ExceptionOccurred()) { return value; } | |
39 #define CHECK_EXCEPTION if(env->ExceptionOccurred()) { return;} | |
40 #define THROW_NEW_DEBUGGER_EXCEPTION_(str, value) { throwNewDebuggerException(env, str); return value; } | |
41 #define THROW_NEW_DEBUGGER_EXCEPTION(str) { throwNewDebuggerException(env, str); return;} | |
42 | |
43 #define SYMBOL_BUF_SIZE 256 | |
44 #define ERR_MSG_SIZE (PATH_MAX + 256) | |
45 | |
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46 // debug modes |
0 | 47 static int _libsaproc_debug = 0; |
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48 #ifndef SOLARIS_11_B159_OR_LATER |
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49 static bool _Pstack_iter_debug = false; |
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50 |
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51 static void dprintf_2(const char* format,...) { |
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52 if (_Pstack_iter_debug) { |
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53 va_list alist; |
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54 |
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55 va_start(alist, format); |
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56 fputs("Pstack_iter DEBUG: ", stderr); |
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57 vfprintf(stderr, format, alist); |
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58 va_end(alist); |
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59 } |
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60 } |
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61 #endif // !SOLARIS_11_B159_OR_LATER |
0 | 62 |
63 static void print_debug(const char* format,...) { | |
64 if (_libsaproc_debug) { | |
65 va_list alist; | |
66 | |
67 va_start(alist, format); | |
68 fputs("libsaproc DEBUG: ", stderr); | |
69 vfprintf(stderr, format, alist); | |
70 va_end(alist); | |
71 } | |
72 } | |
73 | |
74 struct Debugger { | |
75 JNIEnv* env; | |
76 jobject this_obj; | |
77 }; | |
78 | |
79 struct DebuggerWithObject : Debugger { | |
80 jobject obj; | |
81 }; | |
82 | |
83 struct DebuggerWith2Objects : DebuggerWithObject { | |
84 jobject obj2; | |
85 }; | |
86 | |
87 /* | |
88 * Portions of user thread level detail gathering code is from pstack source | |
89 * code. See pstack.c in Solaris 2.8 user commands source code. | |
90 */ | |
91 | |
92 static void throwNewDebuggerException(JNIEnv* env, const char* errMsg) { | |
93 env->ThrowNew(env->FindClass("sun/jvm/hotspot/debugger/DebuggerException"), errMsg); | |
94 } | |
95 | |
96 // JNI ids for some fields, methods | |
97 | |
98 // libproc handler pointer | |
99 static jfieldID p_ps_prochandle_ID = 0; | |
100 | |
101 // libthread.so dlopen handle, thread agent ptr and function pointers | |
102 static jfieldID libthread_db_handle_ID = 0; | |
103 static jfieldID p_td_thragent_t_ID = 0; | |
104 static jfieldID p_td_init_ID = 0; | |
105 static jfieldID p_td_ta_new_ID = 0; | |
106 static jfieldID p_td_ta_delete_ID = 0; | |
107 static jfieldID p_td_ta_thr_iter_ID = 0; | |
108 static jfieldID p_td_thr_get_info_ID = 0; | |
109 static jfieldID p_td_ta_map_id2thr_ID = 0; | |
110 static jfieldID p_td_thr_getgregs_ID = 0; | |
111 | |
112 // reg index fields | |
113 static jfieldID pcRegIndex_ID = 0; | |
114 static jfieldID fpRegIndex_ID = 0; | |
115 | |
116 // part of the class sharing workaround | |
117 static jfieldID classes_jsa_fd_ID = 0; | |
118 static jfieldID p_file_map_header_ID = 0; | |
119 | |
120 // method ids | |
121 | |
122 static jmethodID getThreadForThreadId_ID = 0; | |
123 static jmethodID createSenderFrame_ID = 0; | |
124 static jmethodID createLoadObject_ID = 0; | |
125 static jmethodID createClosestSymbol_ID = 0; | |
126 static jmethodID listAdd_ID = 0; | |
127 | |
128 /* | |
129 * Functions we need from libthread_db | |
130 */ | |
131 typedef td_err_e | |
132 (*p_td_init_t)(void); | |
133 typedef td_err_e | |
134 (*p_td_ta_new_t)(void *, td_thragent_t **); | |
135 typedef td_err_e | |
136 (*p_td_ta_delete_t)(td_thragent_t *); | |
137 typedef td_err_e | |
138 (*p_td_ta_thr_iter_t)(const td_thragent_t *, td_thr_iter_f *, void *, | |
139 td_thr_state_e, int, sigset_t *, unsigned); | |
140 typedef td_err_e | |
141 (*p_td_thr_get_info_t)(const td_thrhandle_t *, td_thrinfo_t *); | |
142 typedef td_err_e | |
143 (*p_td_ta_map_id2thr_t)(const td_thragent_t *, thread_t, td_thrhandle_t *); | |
144 typedef td_err_e | |
145 (*p_td_thr_getgregs_t)(const td_thrhandle_t *, prgregset_t); | |
146 | |
147 static void | |
148 clear_libthread_db_ptrs(JNIEnv* env, jobject this_obj) { | |
149 // release libthread_db agent, if we had created | |
150 p_td_ta_delete_t p_td_ta_delete = 0; | |
151 p_td_ta_delete = (p_td_ta_delete_t) env->GetLongField(this_obj, p_td_ta_delete_ID); | |
152 | |
153 td_thragent_t *p_td_thragent_t = 0; | |
154 p_td_thragent_t = (td_thragent_t*) env->GetLongField(this_obj, p_td_thragent_t_ID); | |
155 if (p_td_thragent_t != 0 && p_td_ta_delete != 0) { | |
156 p_td_ta_delete(p_td_thragent_t); | |
157 } | |
158 | |
159 // dlclose libthread_db.so | |
160 void* libthread_db_handle = (void*) env->GetLongField(this_obj, libthread_db_handle_ID); | |
161 if (libthread_db_handle != 0) { | |
162 dlclose(libthread_db_handle); | |
163 } | |
164 | |
165 env->SetLongField(this_obj, libthread_db_handle_ID, (jlong)0); | |
166 env->SetLongField(this_obj, p_td_init_ID, (jlong)0); | |
167 env->SetLongField(this_obj, p_td_ta_new_ID, (jlong)0); | |
168 env->SetLongField(this_obj, p_td_ta_delete_ID, (jlong)0); | |
169 env->SetLongField(this_obj, p_td_ta_thr_iter_ID, (jlong)0); | |
170 env->SetLongField(this_obj, p_td_thr_get_info_ID, (jlong)0); | |
171 env->SetLongField(this_obj, p_td_ta_map_id2thr_ID, (jlong)0); | |
172 env->SetLongField(this_obj, p_td_thr_getgregs_ID, (jlong)0); | |
173 } | |
174 | |
175 | |
176 static void detach_internal(JNIEnv* env, jobject this_obj) { | |
177 // clear libthread_db stuff | |
178 clear_libthread_db_ptrs(env, this_obj); | |
179 | |
180 // release ptr to ps_prochandle | |
181 jlong p_ps_prochandle; | |
182 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
183 if (p_ps_prochandle != 0L) { | |
184 Prelease((struct ps_prochandle*) p_ps_prochandle, PRELEASE_CLEAR); | |
185 } | |
186 | |
187 // part of the class sharing workaround | |
188 int classes_jsa_fd = env->GetIntField(this_obj, classes_jsa_fd_ID); | |
189 if (classes_jsa_fd != -1) { | |
190 close(classes_jsa_fd); | |
191 struct FileMapHeader* pheader = (struct FileMapHeader*) env->GetLongField(this_obj, p_file_map_header_ID); | |
192 if (pheader != NULL) { | |
193 free(pheader); | |
194 } | |
195 } | |
196 } | |
197 | |
198 // Is it okay to ignore libthread_db failure? Set env var to ignore | |
199 // libthread_db failure. You can still debug, but will miss threads | |
200 // related functionality. | |
201 static bool sa_ignore_threaddb = (getenv("SA_IGNORE_THREADDB") != 0); | |
202 | |
203 #define HANDLE_THREADDB_FAILURE(msg) \ | |
204 if (sa_ignore_threaddb) { \ | |
205 printf("libsaproc WARNING: %s\n", msg); \ | |
206 return; \ | |
207 } else { \ | |
208 THROW_NEW_DEBUGGER_EXCEPTION(msg); \ | |
209 } | |
210 | |
211 #define HANDLE_THREADDB_FAILURE_(msg, ret) \ | |
212 if (sa_ignore_threaddb) { \ | |
213 printf("libsaproc WARNING: %s\n", msg); \ | |
214 return ret; \ | |
215 } else { \ | |
216 THROW_NEW_DEBUGGER_EXCEPTION_(msg, ret); \ | |
217 } | |
218 | |
219 static const char * alt_root = NULL; | |
220 static int alt_root_len = -1; | |
221 | |
222 #define SA_ALTROOT "SA_ALTROOT" | |
223 | |
224 static void init_alt_root() { | |
225 if (alt_root_len == -1) { | |
226 alt_root = getenv(SA_ALTROOT); | |
227 if (alt_root) | |
228 alt_root_len = strlen(alt_root); | |
229 else | |
230 alt_root_len = 0; | |
231 } | |
232 } | |
233 | |
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234 // This function is a complete substitute for the open system call |
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235 // since it's also used to override open calls from libproc to |
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236 // implement as a pathmap style facility for the SA. If libproc |
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237 // starts using other interfaces then this might have to extended to |
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238 // cover other calls. |
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239 extern "C" int libsaproc_open(const char * name, int oflag, ...) { |
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240 if (oflag == O_RDONLY) { |
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241 init_alt_root(); |
0 | 242 |
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243 if (_libsaproc_debug) { |
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244 printf("libsaproc DEBUG: libsaproc_open %s\n", name); |
0 | 245 } |
246 | |
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247 if (alt_root_len > 0) { |
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248 int fd = -1; |
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249 char alt_path[PATH_MAX+1]; |
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250 |
0 | 251 strcpy(alt_path, alt_root); |
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252 strcat(alt_path, name); |
0 | 253 fd = open(alt_path, O_RDONLY); |
254 if (fd >= 0) { | |
255 if (_libsaproc_debug) { | |
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256 printf("libsaproc DEBUG: libsaproc_open substituted %s\n", alt_path); |
0 | 257 } |
258 return fd; | |
259 } | |
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260 |
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261 if (strrchr(name, '/')) { |
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262 strcpy(alt_path, alt_root); |
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263 strcat(alt_path, strrchr(name, '/')); |
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264 fd = open(alt_path, O_RDONLY); |
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265 if (fd >= 0) { |
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266 if (_libsaproc_debug) { |
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267 printf("libsaproc DEBUG: libsaproc_open substituted %s\n", alt_path); |
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268 } |
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269 return fd; |
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270 } |
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271 } |
0 | 272 } |
273 } | |
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274 |
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275 { |
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276 mode_t mode; |
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277 va_list ap; |
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278 va_start(ap, oflag); |
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279 mode = va_arg(ap, mode_t); |
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280 va_end(ap); |
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281 |
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282 return open(name, oflag, mode); |
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283 } |
0 | 284 } |
285 | |
286 | |
287 static void * pathmap_dlopen(const char * name, int mode) { | |
288 init_alt_root(); | |
289 | |
290 if (_libsaproc_debug) { | |
291 printf("libsaproc DEBUG: pathmap_dlopen %s\n", name); | |
292 } | |
293 | |
294 void * handle = NULL; | |
295 if (alt_root_len > 0) { | |
296 char alt_path[PATH_MAX+1]; | |
297 strcpy(alt_path, alt_root); | |
298 strcat(alt_path, name); | |
299 handle = dlopen(alt_path, mode); | |
300 if (_libsaproc_debug && handle) { | |
301 printf("libsaproc DEBUG: pathmap_dlopen substituted %s\n", alt_path); | |
302 } | |
303 | |
304 if (handle == NULL && strrchr(name, '/')) { | |
305 strcpy(alt_path, alt_root); | |
306 strcat(alt_path, strrchr(name, '/')); | |
307 handle = dlopen(alt_path, mode); | |
308 if (_libsaproc_debug && handle) { | |
309 printf("libsaproc DEBUG: pathmap_dlopen substituted %s\n", alt_path); | |
310 } | |
311 } | |
312 } | |
313 if (handle == NULL) { | |
314 handle = dlopen(name, mode); | |
315 } | |
316 if (_libsaproc_debug) { | |
317 printf("libsaproc DEBUG: pathmap_dlopen %s return 0x%x\n", name, handle); | |
318 } | |
319 return handle; | |
320 } | |
321 | |
322 // libproc and libthread_db callback functions | |
323 | |
324 extern "C" { | |
325 | |
326 static int | |
327 init_libthread_db_ptrs(void *cd, const prmap_t *pmp, const char *object_name) { | |
328 Debugger* dbg = (Debugger*) cd; | |
329 JNIEnv* env = dbg->env; | |
330 jobject this_obj = dbg->this_obj; | |
331 struct ps_prochandle* ph = (struct ps_prochandle*) env->GetLongField(this_obj, p_ps_prochandle_ID); | |
332 | |
333 char *s1 = 0, *s2 = 0; | |
334 char libthread_db[PATH_MAX]; | |
335 | |
336 if (strstr(object_name, "/libthread.so.") == NULL) | |
337 return (0); | |
338 | |
339 /* | |
340 * We found a libthread. | |
341 * dlopen() the matching libthread_db and get the thread agent handle. | |
342 */ | |
343 if (Pstatus(ph)->pr_dmodel == PR_MODEL_NATIVE) { | |
344 (void) strcpy(libthread_db, object_name); | |
345 s1 = (char*) strstr(object_name, ".so."); | |
346 s2 = (char*) strstr(libthread_db, ".so."); | |
347 (void) strcpy(s2, "_db"); | |
348 s2 += 3; | |
349 (void) strcpy(s2, s1); | |
350 } else { | |
351 #ifdef _LP64 | |
352 /* | |
353 * The victim process is 32-bit, we are 64-bit. | |
354 * We have to find the 64-bit version of libthread_db | |
355 * that matches the victim's 32-bit version of libthread. | |
356 */ | |
357 (void) strcpy(libthread_db, object_name); | |
358 s1 = (char*) strstr(object_name, "/libthread.so."); | |
359 s2 = (char*) strstr(libthread_db, "/libthread.so."); | |
360 (void) strcpy(s2, "/64"); | |
361 s2 += 3; | |
362 (void) strcpy(s2, s1); | |
363 s1 = (char*) strstr(s1, ".so."); | |
364 s2 = (char*) strstr(s2, ".so."); | |
365 (void) strcpy(s2, "_db"); | |
366 s2 += 3; | |
367 (void) strcpy(s2, s1); | |
368 #else | |
369 return (0); | |
370 #endif /* _LP64 */ | |
371 } | |
372 | |
373 void* libthread_db_handle = 0; | |
374 if ((libthread_db_handle = pathmap_dlopen(libthread_db, RTLD_LAZY|RTLD_LOCAL)) == NULL) { | |
375 char errMsg[PATH_MAX + 256]; | |
376 sprintf(errMsg, "Can't load %s!", libthread_db); | |
377 HANDLE_THREADDB_FAILURE_(errMsg, 0); | |
378 } | |
379 env->SetLongField(this_obj, libthread_db_handle_ID, (jlong)(uintptr_t)libthread_db_handle); | |
380 | |
381 void* tmpPtr = 0; | |
382 tmpPtr = dlsym(libthread_db_handle, "td_init"); | |
383 if (tmpPtr == 0) { | |
384 HANDLE_THREADDB_FAILURE_("dlsym failed on td_init!", 0); | |
385 } | |
386 env->SetLongField(this_obj, p_td_init_ID, (jlong)(uintptr_t) tmpPtr); | |
387 | |
388 tmpPtr =dlsym(libthread_db_handle, "td_ta_new"); | |
389 if (tmpPtr == 0) { | |
390 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_new!", 0); | |
391 } | |
392 env->SetLongField(this_obj, p_td_ta_new_ID, (jlong)(uintptr_t) tmpPtr); | |
393 | |
394 tmpPtr = dlsym(libthread_db_handle, "td_ta_delete"); | |
395 if (tmpPtr == 0) { | |
396 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_delete!", 0); | |
397 } | |
398 env->SetLongField(this_obj, p_td_ta_delete_ID, (jlong)(uintptr_t) tmpPtr); | |
399 | |
400 tmpPtr = dlsym(libthread_db_handle, "td_ta_thr_iter"); | |
401 if (tmpPtr == 0) { | |
402 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_thr_iter!", 0); | |
403 } | |
404 env->SetLongField(this_obj, p_td_ta_thr_iter_ID, (jlong)(uintptr_t) tmpPtr); | |
405 | |
406 tmpPtr = dlsym(libthread_db_handle, "td_thr_get_info"); | |
407 if (tmpPtr == 0) { | |
408 HANDLE_THREADDB_FAILURE_("dlsym failed on td_thr_get_info!", 0); | |
409 } | |
410 env->SetLongField(this_obj, p_td_thr_get_info_ID, (jlong)(uintptr_t) tmpPtr); | |
411 | |
412 tmpPtr = dlsym(libthread_db_handle, "td_ta_map_id2thr"); | |
413 if (tmpPtr == 0) { | |
414 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_map_id2thr!", 0); | |
415 } | |
416 env->SetLongField(this_obj, p_td_ta_map_id2thr_ID, (jlong)(uintptr_t) tmpPtr); | |
417 | |
418 tmpPtr = dlsym(libthread_db_handle, "td_thr_getgregs"); | |
419 if (tmpPtr == 0) { | |
420 HANDLE_THREADDB_FAILURE_("dlsym failed on td_thr_getgregs!", 0); | |
421 } | |
422 env->SetLongField(this_obj, p_td_thr_getgregs_ID, (jlong)(uintptr_t) tmpPtr); | |
423 | |
424 return 1; | |
425 } | |
426 | |
427 static int | |
428 fill_thread_list(const td_thrhandle_t *p_td_thragent_t, void* cd) { | |
429 DebuggerWithObject* dbgo = (DebuggerWithObject*) cd; | |
430 JNIEnv* env = dbgo->env; | |
431 jobject this_obj = dbgo->this_obj; | |
432 jobject list = dbgo->obj; | |
433 | |
434 td_thrinfo_t thrinfo; | |
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 | |
437 if (p_td_thr_get_info(p_td_thragent_t, &thrinfo) != TD_OK) | |
438 return (0); | |
439 | |
440 jobject threadProxy = env->CallObjectMethod(this_obj, getThreadForThreadId_ID, (jlong)(uintptr_t) thrinfo.ti_tid); | |
441 CHECK_EXCEPTION_(1); | |
442 env->CallBooleanMethod(list, listAdd_ID, threadProxy); | |
443 CHECK_EXCEPTION_(1); | |
444 return 0; | |
445 } | |
446 | |
447 static int | |
448 fill_load_object_list(void *cd, const prmap_t* pmp, const char* obj_name) { | |
449 | |
450 if (obj_name) { | |
451 DebuggerWithObject* dbgo = (DebuggerWithObject*) cd; | |
452 JNIEnv* env = dbgo->env; | |
453 jobject this_obj = dbgo->this_obj; | |
454 jobject list = dbgo->obj; | |
455 | |
456 jstring objectName = env->NewStringUTF(obj_name); | |
457 CHECK_EXCEPTION_(1); | |
458 | |
459 jlong mapSize = (jlong) pmp->pr_size; | |
460 jobject sharedObject = env->CallObjectMethod(this_obj, createLoadObject_ID, | |
461 objectName, mapSize, (jlong)(uintptr_t)pmp->pr_vaddr); | |
462 CHECK_EXCEPTION_(1); | |
463 env->CallBooleanMethod(list, listAdd_ID, sharedObject); | |
464 CHECK_EXCEPTION_(1); | |
465 } | |
466 | |
467 return 0; | |
468 } | |
469 | |
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470 // Pstack_iter() proc_stack_f callback prior to Nevada-B159 |
0 | 471 static int |
472 fill_cframe_list(void *cd, const prgregset_t regs, uint_t argc, const long *argv) { | |
473 DebuggerWith2Objects* dbgo2 = (DebuggerWith2Objects*) cd; | |
474 JNIEnv* env = dbgo2->env; | |
475 jobject this_obj = dbgo2->this_obj; | |
476 jobject curFrame = dbgo2->obj2; | |
477 | |
478 jint pcRegIndex = env->GetIntField(this_obj, pcRegIndex_ID); | |
479 jint fpRegIndex = env->GetIntField(this_obj, fpRegIndex_ID); | |
480 | |
481 jlong pc = (jlong) (uintptr_t) regs[pcRegIndex]; | |
482 jlong fp = (jlong) (uintptr_t) regs[fpRegIndex]; | |
483 | |
484 dbgo2->obj2 = env->CallObjectMethod(this_obj, createSenderFrame_ID, | |
485 curFrame, pc, fp); | |
486 CHECK_EXCEPTION_(1); | |
487 if (dbgo2->obj == 0) { | |
488 dbgo2->obj = dbgo2->obj2; | |
489 } | |
490 return 0; | |
491 } | |
492 | |
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493 // Pstack_iter() proc_stack_f callback in Nevada-B159 or later |
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494 /*ARGSUSED*/ |
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495 static int |
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496 wrapper_fill_cframe_list(void *cd, const prgregset_t regs, uint_t argc, |
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497 const long *argv, int frame_flags, int sig) { |
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498 return(fill_cframe_list(cd, regs, argc, argv)); |
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499 } |
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500 |
0 | 501 // part of the class sharing workaround |
502 | |
503 // FIXME: !!HACK ALERT!! | |
504 | |
505 // The format of sharing achive file header is needed to read shared heap | |
506 // file mappings. For now, I am hard coding portion of FileMapHeader here. | |
507 // Refer to filemap.hpp. | |
508 | |
509 // FileMapHeader describes the shared space data in the file to be | |
510 // mapped. This structure gets written to a file. It is not a class, so | |
511 // that the compilers don't add any compiler-private data to it. | |
512 | |
513 const int NUM_SHARED_MAPS = 4; | |
514 | |
515 // Refer to FileMapInfo::_current_version in filemap.hpp | |
516 const int CURRENT_ARCHIVE_VERSION = 1; | |
517 | |
518 struct FileMapHeader { | |
519 int _magic; // identify file type. | |
520 int _version; // (from enum, above.) | |
521 size_t _alignment; // how shared archive should be aligned | |
522 | |
523 | |
524 struct space_info { | |
525 int _file_offset; // sizeof(this) rounded to vm page size | |
526 char* _base; // copy-on-write base address | |
527 size_t _capacity; // for validity checking | |
528 size_t _used; // for setting space top on read | |
529 | |
530 bool _read_only; // read only space? | |
531 bool _allow_exec; // executable code in space? | |
532 | |
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533 } _space[NUM_SHARED_MAPS]; |
0 | 534 |
535 // Ignore the rest of the FileMapHeader. We don't need those fields here. | |
536 }; | |
537 | |
538 static bool | |
529
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539 read_jboolean(struct ps_prochandle* ph, psaddr_t addr, jboolean* pvalue) { |
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540 jboolean i; |
0 | 541 if (ps_pread(ph, addr, &i, sizeof(i)) == PS_OK) { |
542 *pvalue = i; | |
543 return true; | |
544 } else { | |
545 return false; | |
546 } | |
547 } | |
548 | |
549 static bool | |
550 read_pointer(struct ps_prochandle* ph, psaddr_t addr, uintptr_t* pvalue) { | |
551 uintptr_t uip; | |
552 if (ps_pread(ph, addr, &uip, sizeof(uip)) == PS_OK) { | |
553 *pvalue = uip; | |
554 return true; | |
555 } else { | |
556 return false; | |
557 } | |
558 } | |
559 | |
560 static bool | |
561 read_string(struct ps_prochandle* ph, psaddr_t addr, char* buf, size_t size) { | |
562 char ch = ' '; | |
563 size_t i = 0; | |
564 | |
565 while (ch != '\0') { | |
566 if (ps_pread(ph, addr, &ch, sizeof(ch)) != PS_OK) | |
567 return false; | |
568 | |
569 if (i < size - 1) { | |
570 buf[i] = ch; | |
571 } else { // smaller buffer | |
572 return false; | |
573 } | |
574 | |
575 i++; addr++; | |
576 } | |
577 | |
578 buf[i] = '\0'; | |
579 return true; | |
580 } | |
581 | |
582 #define USE_SHARED_SPACES_SYM "UseSharedSpaces" | |
583 // mangled symbol name for Arguments::SharedArchivePath | |
584 #define SHARED_ARCHIVE_PATH_SYM "__1cJArgumentsRSharedArchivePath_" | |
585 | |
586 static int | |
587 init_classsharing_workaround(void *cd, const prmap_t* pmap, const char* obj_name) { | |
588 Debugger* dbg = (Debugger*) cd; | |
589 JNIEnv* env = dbg->env; | |
590 jobject this_obj = dbg->this_obj; | |
591 const char* jvm_name = 0; | |
10229 | 592 if ((jvm_name = strstr(obj_name, "libjvm.so")) != NULL) { |
0 | 593 jvm_name = obj_name; |
594 } else { | |
595 return 0; | |
596 } | |
597 | |
598 struct ps_prochandle* ph = (struct ps_prochandle*) env->GetLongField(this_obj, p_ps_prochandle_ID); | |
599 | |
10229 | 600 // initialize classes.jsa file descriptor field. |
0 | 601 dbg->env->SetIntField(this_obj, classes_jsa_fd_ID, -1); |
602 | |
603 // check whether class sharing is on by reading variable "UseSharedSpaces" | |
604 psaddr_t useSharedSpacesAddr = 0; | |
605 ps_pglobal_lookup(ph, jvm_name, USE_SHARED_SPACES_SYM, &useSharedSpacesAddr); | |
606 if (useSharedSpacesAddr == 0) { | |
607 THROW_NEW_DEBUGGER_EXCEPTION_("can't find 'UseSharedSpaces' flag\n", 1); | |
608 } | |
609 | |
610 // read the value of the flag "UseSharedSpaces" | |
529
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611 // Since hotspot types are not available to build this library. So |
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612 // equivalent type "jboolean" is used to read the value of "UseSharedSpaces" |
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613 // which is same as hotspot type "bool". |
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614 jboolean value = 0; |
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615 if (read_jboolean(ph, useSharedSpacesAddr, &value) != true) { |
0 | 616 THROW_NEW_DEBUGGER_EXCEPTION_("can't read 'UseSharedSpaces' flag", 1); |
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617 } else if ((int)value == 0) { |
0 | 618 print_debug("UseSharedSpaces is false, assuming -Xshare:off!\n"); |
619 return 1; | |
620 } | |
621 | |
622 char classes_jsa[PATH_MAX]; | |
623 psaddr_t sharedArchivePathAddrAddr = 0; | |
624 ps_pglobal_lookup(ph, jvm_name, SHARED_ARCHIVE_PATH_SYM, &sharedArchivePathAddrAddr); | |
625 if (sharedArchivePathAddrAddr == 0) { | |
626 print_debug("can't find symbol 'Arguments::SharedArchivePath'\n"); | |
627 THROW_NEW_DEBUGGER_EXCEPTION_("can't get shared archive path from debuggee", 1); | |
628 } | |
629 | |
630 uintptr_t sharedArchivePathAddr = 0; | |
631 if (read_pointer(ph, sharedArchivePathAddrAddr, &sharedArchivePathAddr) != true) { | |
632 print_debug("can't find read pointer 'Arguments::SharedArchivePath'\n"); | |
633 THROW_NEW_DEBUGGER_EXCEPTION_("can't get shared archive path from debuggee", 1); | |
634 } | |
635 | |
636 if (read_string(ph, (psaddr_t)sharedArchivePathAddr, classes_jsa, sizeof(classes_jsa)) != true) { | |
637 print_debug("can't find read 'Arguments::SharedArchivePath' value\n"); | |
638 THROW_NEW_DEBUGGER_EXCEPTION_("can't get shared archive path from debuggee", 1); | |
639 } | |
640 | |
641 print_debug("looking for %s\n", classes_jsa); | |
642 | |
10229 | 643 // open the classes.jsa |
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644 int fd = libsaproc_open(classes_jsa, O_RDONLY); |
0 | 645 if (fd < 0) { |
646 char errMsg[ERR_MSG_SIZE]; | |
647 sprintf(errMsg, "can't open shared archive file %s", classes_jsa); | |
648 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1); | |
649 } else { | |
650 print_debug("opened shared archive file %s\n", classes_jsa); | |
651 } | |
652 | |
10229 | 653 // parse classes.jsa |
0 | 654 struct FileMapHeader* pheader = (struct FileMapHeader*) malloc(sizeof(struct FileMapHeader)); |
655 if (pheader == NULL) { | |
656 close(fd); | |
657 THROW_NEW_DEBUGGER_EXCEPTION_("can't allocate memory for shared file map header", 1); | |
658 } | |
659 | |
660 memset(pheader, 0, sizeof(struct FileMapHeader)); | |
661 // read FileMapHeader | |
662 size_t n = read(fd, pheader, sizeof(struct FileMapHeader)); | |
663 if (n != sizeof(struct FileMapHeader)) { | |
664 free(pheader); | |
665 close(fd); | |
666 char errMsg[ERR_MSG_SIZE]; | |
667 sprintf(errMsg, "unable to read shared archive file map header from %s", classes_jsa); | |
668 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1); | |
669 } | |
670 | |
671 // check file magic | |
672 if (pheader->_magic != 0xf00baba2) { | |
673 free(pheader); | |
674 close(fd); | |
675 char errMsg[ERR_MSG_SIZE]; | |
676 sprintf(errMsg, "%s has bad shared archive magic 0x%x, expecting 0xf00baba2", | |
677 classes_jsa, pheader->_magic); | |
678 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1); | |
679 } | |
680 | |
681 // check version | |
682 if (pheader->_version != CURRENT_ARCHIVE_VERSION) { | |
683 free(pheader); | |
684 close(fd); | |
685 char errMsg[ERR_MSG_SIZE]; | |
686 sprintf(errMsg, "%s has wrong shared archive version %d, expecting %d", | |
687 classes_jsa, pheader->_version, CURRENT_ARCHIVE_VERSION); | |
688 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1); | |
689 } | |
690 | |
691 if (_libsaproc_debug) { | |
692 for (int m = 0; m < NUM_SHARED_MAPS; m++) { | |
693 print_debug("shared file offset %d mapped at 0x%lx, size = %ld, read only? = %d\n", | |
694 pheader->_space[m]._file_offset, pheader->_space[m]._base, | |
695 pheader->_space[m]._used, pheader->_space[m]._read_only); | |
696 } | |
697 } | |
698 | |
699 // FIXME: For now, omitting other checks such as VM version etc. | |
700 | |
701 // store class archive file fd and map header in debugger object fields | |
702 dbg->env->SetIntField(this_obj, classes_jsa_fd_ID, fd); | |
703 dbg->env->SetLongField(this_obj, p_file_map_header_ID, (jlong)(uintptr_t) pheader); | |
704 return 1; | |
705 } | |
706 | |
707 } // extern "C" | |
708 | |
709 // error messages for proc_arg_grab failure codes. The messages are | |
710 // modified versions of comments against corresponding #defines in | |
711 // libproc.h. | |
712 static const char* proc_arg_grab_errmsgs[] = { | |
713 "", | |
714 /* G_NOPROC */ "No such process", | |
715 /* G_NOCORE */ "No such core file", | |
716 /* G_NOPROCORCORE */ "No such process or core", | |
717 /* G_NOEXEC */ "Cannot locate executable file", | |
718 /* G_ZOMB */ "Zombie processs", | |
719 /* G_PERM */ "No permission to attach", | |
720 /* G_BUSY */ "Another process has already attached", | |
721 /* G_SYS */ "System process - can not attach", | |
722 /* G_SELF */ "Process is self - can't debug myself!", | |
723 /* G_INTR */ "Interrupt received while grabbing", | |
724 /* G_LP64 */ "debuggee is 64 bit, use java -d64 for debugger", | |
725 /* G_FORMAT */ "File is not an ELF format core file - corrupted core?", | |
726 /* G_ELF */ "Libelf error while parsing an ELF file", | |
727 /* G_NOTE */ "Required PT_NOTE Phdr not present - corrupted core?", | |
728 }; | |
729 | |
730 static void attach_internal(JNIEnv* env, jobject this_obj, jstring cmdLine, jboolean isProcess) { | |
731 jboolean isCopy; | |
732 int gcode; | |
733 const char* cmdLine_cstr = env->GetStringUTFChars(cmdLine, &isCopy); | |
734 CHECK_EXCEPTION; | |
735 | |
736 // some older versions of libproc.so crash when trying to attach 32 bit | |
737 // debugger to 64 bit core file. check and throw error. | |
738 #ifndef _LP64 | |
739 atoi(cmdLine_cstr); | |
740 if (errno) { | |
741 // core file | |
742 int core_fd; | |
743 if ((core_fd = open64(cmdLine_cstr, O_RDONLY)) >= 0) { | |
744 Elf32_Ehdr e32; | |
745 if (pread64(core_fd, &e32, sizeof (e32), 0) == sizeof (e32) && | |
746 memcmp(&e32.e_ident[EI_MAG0], ELFMAG, SELFMAG) == 0 && | |
747 e32.e_type == ET_CORE && e32.e_ident[EI_CLASS] == ELFCLASS64) { | |
748 close(core_fd); | |
749 THROW_NEW_DEBUGGER_EXCEPTION("debuggee is 64 bit, use java -d64 for debugger"); | |
750 } | |
751 close(core_fd); | |
752 } | |
753 // all other conditions are handled by libproc.so. | |
754 } | |
755 #endif | |
756 | |
757 // connect to process/core | |
758 struct ps_prochandle* ph = proc_arg_grab(cmdLine_cstr, (isProcess? PR_ARG_PIDS : PR_ARG_CORES), PGRAB_FORCE, &gcode); | |
759 env->ReleaseStringUTFChars(cmdLine, cmdLine_cstr); | |
760 if (! ph) { | |
761 if (gcode > 0 && gcode < sizeof(proc_arg_grab_errmsgs)/sizeof(const char*)) { | |
762 char errMsg[ERR_MSG_SIZE]; | |
763 sprintf(errMsg, "Attach failed : %s", proc_arg_grab_errmsgs[gcode]); | |
764 THROW_NEW_DEBUGGER_EXCEPTION(errMsg); | |
765 } else { | |
766 if (_libsaproc_debug && gcode == G_STRANGE) { | |
767 perror("libsaproc DEBUG: "); | |
768 } | |
769 if (isProcess) { | |
770 THROW_NEW_DEBUGGER_EXCEPTION("Not able to attach to process!"); | |
771 } else { | |
772 THROW_NEW_DEBUGGER_EXCEPTION("Not able to attach to core file!"); | |
773 } | |
774 } | |
775 } | |
776 | |
777 // even though libproc.so supports 64 bit debugger and 32 bit debuggee, we don't | |
778 // support such cross-bit-debugging. check for that combination and throw error. | |
779 #ifdef _LP64 | |
780 int data_model; | |
781 if (ps_pdmodel(ph, &data_model) != PS_OK) { | |
782 Prelease(ph, PRELEASE_CLEAR); | |
783 THROW_NEW_DEBUGGER_EXCEPTION("can't determine debuggee data model (ILP32? or LP64?)"); | |
784 } | |
785 if (data_model == PR_MODEL_ILP32) { | |
786 Prelease(ph, PRELEASE_CLEAR); | |
787 THROW_NEW_DEBUGGER_EXCEPTION("debuggee is 32 bit, use 32 bit java for debugger"); | |
788 } | |
789 #endif | |
790 | |
791 env->SetLongField(this_obj, p_ps_prochandle_ID, (jlong)(uintptr_t)ph); | |
792 | |
793 Debugger dbg; | |
794 dbg.env = env; | |
795 dbg.this_obj = this_obj; | |
796 jthrowable exception = 0; | |
797 if (! isProcess) { | |
798 /* | |
799 * With class sharing, shared perm. gen heap is allocated in with MAP_SHARED|PROT_READ. | |
10229 | 800 * These pages are mapped from the file "classes.jsa". MAP_SHARED pages are not dumped |
801 * in Solaris core.To read shared heap pages, we have to read classes.jsa file. | |
0 | 802 */ |
803 Pobject_iter(ph, init_classsharing_workaround, &dbg); | |
804 exception = env->ExceptionOccurred(); | |
805 if (exception) { | |
806 env->ExceptionClear(); | |
807 detach_internal(env, this_obj); | |
808 env->Throw(exception); | |
809 return; | |
810 } | |
811 } | |
812 | |
813 /* | |
814 * Iterate over the process mappings looking | |
815 * for libthread and then dlopen the appropriate | |
816 * libthread_db and get function pointers. | |
817 */ | |
818 Pobject_iter(ph, init_libthread_db_ptrs, &dbg); | |
819 exception = env->ExceptionOccurred(); | |
820 if (exception) { | |
821 env->ExceptionClear(); | |
822 if (!sa_ignore_threaddb) { | |
823 detach_internal(env, this_obj); | |
824 env->Throw(exception); | |
825 } | |
826 return; | |
827 } | |
828 | |
829 // init libthread_db and create thread_db agent | |
830 p_td_init_t p_td_init = (p_td_init_t) env->GetLongField(this_obj, p_td_init_ID); | |
831 if (p_td_init == 0) { | |
832 if (!sa_ignore_threaddb) { | |
833 detach_internal(env, this_obj); | |
834 } | |
835 HANDLE_THREADDB_FAILURE("Did not find libthread in target process/core!"); | |
836 } | |
837 | |
838 if (p_td_init() != TD_OK) { | |
839 if (!sa_ignore_threaddb) { | |
840 detach_internal(env, this_obj); | |
841 } | |
842 HANDLE_THREADDB_FAILURE("Can't initialize thread_db!"); | |
843 } | |
844 | |
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 | |
847 td_thragent_t *p_td_thragent_t = 0; | |
848 if (p_td_ta_new(ph, &p_td_thragent_t) != TD_OK) { | |
849 if (!sa_ignore_threaddb) { | |
850 detach_internal(env, this_obj); | |
851 } | |
852 HANDLE_THREADDB_FAILURE("Can't create thread_db agent!"); | |
853 } | |
854 env->SetLongField(this_obj, p_td_thragent_t_ID, (jlong)(uintptr_t) p_td_thragent_t); | |
855 | |
856 } | |
857 | |
858 /* | |
859 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
860 * Method: attach0 | |
861 * Signature: (Ljava/lang/String;)V | |
862 * Description: process detach | |
863 */ | |
864 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_attach0__Ljava_lang_String_2 | |
865 (JNIEnv *env, jobject this_obj, jstring pid) { | |
866 attach_internal(env, this_obj, pid, JNI_TRUE); | |
867 } | |
868 | |
869 /* | |
870 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
871 * Method: attach0 | |
872 * Signature: (Ljava/lang/String;Ljava/lang/String;)V | |
873 * Description: core file detach | |
874 */ | |
875 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_attach0__Ljava_lang_String_2Ljava_lang_String_2 | |
876 (JNIEnv *env, jobject this_obj, jstring executable, jstring corefile) { | |
877 // ignore executable file name, libproc.so can detect a.out name anyway. | |
878 attach_internal(env, this_obj, corefile, JNI_FALSE); | |
879 } | |
880 | |
881 | |
882 /* | |
883 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
884 * Method: detach0 | |
885 * Signature: ()V | |
886 * Description: process/core file detach | |
887 */ | |
888 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_detach0 | |
889 (JNIEnv *env, jobject this_obj) { | |
890 detach_internal(env, this_obj); | |
891 } | |
892 | |
893 /* | |
894 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
895 * Method: getRemoteProcessAddressSize0 | |
896 * Signature: ()I | |
897 * Description: get process/core address size | |
898 */ | |
899 JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getRemoteProcessAddressSize0 | |
900 (JNIEnv *env, jobject this_obj) { | |
901 jlong p_ps_prochandle; | |
902 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
903 int data_model = PR_MODEL_ILP32; | |
904 ps_pdmodel((struct ps_prochandle*) p_ps_prochandle, &data_model); | |
905 print_debug("debuggee is %d bit\n", data_model == PR_MODEL_ILP32? 32 : 64); | |
906 return (jint) data_model == PR_MODEL_ILP32? 32 : 64; | |
907 } | |
908 | |
909 /* | |
910 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
911 * Method: getPageSize0 | |
912 * Signature: ()I | |
913 * Description: get process/core page size | |
914 */ | |
915 JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getPageSize0 | |
916 (JNIEnv *env, jobject this_obj) { | |
917 | |
918 /* | |
919 We are not yet attached to a java process or core file. getPageSize is called from | |
920 the constructor of ProcDebuggerLocal. The following won't work! | |
921 | |
922 jlong p_ps_prochandle; | |
923 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
924 CHECK_EXCEPTION_(-1); | |
925 struct ps_prochandle* prochandle = (struct ps_prochandle*) p_ps_prochandle; | |
926 return (Pstate(prochandle) == PS_DEAD) ? Pgetauxval(prochandle, AT_PAGESZ) | |
927 : getpagesize(); | |
928 | |
929 So even though core may have been generated with a different page size settings, for now | |
930 call getpagesize. | |
931 */ | |
932 | |
933 return getpagesize(); | |
934 } | |
935 | |
936 /* | |
937 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
938 * Method: getThreadIntegerRegisterSet0 | |
939 * Signature: (J)[J | |
940 * Description: get gregset for a given thread specified by thread id | |
941 */ | |
942 JNIEXPORT jlongArray JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getThreadIntegerRegisterSet0 | |
943 (JNIEnv *env, jobject this_obj, jlong tid) { | |
944 // map the thread id to thread handle | |
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 | |
947 td_thragent_t* p_td_thragent_t = (td_thragent_t*) env->GetLongField(this_obj, p_td_thragent_t_ID); | |
948 if (p_td_thragent_t == 0) { | |
949 return 0; | |
950 } | |
951 | |
952 td_thrhandle_t thr_handle; | |
953 if (p_td_ta_map_id2thr(p_td_thragent_t, (thread_t) tid, &thr_handle) != TD_OK) { | |
954 THROW_NEW_DEBUGGER_EXCEPTION_("can't map thread id to thread handle!", 0); | |
955 } | |
956 | |
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 prgregset_t gregs; | |
959 p_td_thr_getgregs(&thr_handle, gregs); | |
960 | |
961 jlongArray res = env->NewLongArray(NPRGREG); | |
962 CHECK_EXCEPTION_(0); | |
963 jboolean isCopy; | |
964 jlong* ptr = env->GetLongArrayElements(res, &isCopy); | |
965 for (int i = 0; i < NPRGREG; i++) { | |
966 ptr[i] = (jlong) (uintptr_t) gregs[i]; | |
967 } | |
968 env->ReleaseLongArrayElements(res, ptr, JNI_COMMIT); | |
969 return res; | |
970 } | |
971 | |
972 /* | |
973 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
974 * Method: fillThreadList0 | |
975 * Signature: (Ljava/util/List;)V | |
976 * Description: fills thread list of the debuggee process/core | |
977 */ | |
978 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_fillThreadList0 | |
979 (JNIEnv *env, jobject this_obj, jobject list) { | |
980 | |
981 td_thragent_t* p_td_thragent_t = (td_thragent_t*) env->GetLongField(this_obj, p_td_thragent_t_ID); | |
982 if (p_td_thragent_t == 0) { | |
983 return; | |
984 } | |
985 | |
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 | |
988 DebuggerWithObject dbgo; | |
989 dbgo.env = env; | |
990 dbgo.this_obj = this_obj; | |
991 dbgo.obj = list; | |
992 | |
993 p_td_ta_thr_iter(p_td_thragent_t, fill_thread_list, &dbgo, | |
994 TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); | |
995 } | |
996 | |
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997 #ifndef SOLARIS_11_B159_OR_LATER |
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998 // building on Nevada-B158 or earlier so more hoops to jump through |
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999 static bool has_newer_Pstack_iter = false; // older version by default |
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1000 #endif |
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1001 |
0 | 1002 /* |
1003 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1004 * Method: fillCFrameList0 | |
1005 * Signature: ([J)Lsun/jvm/hotspot/debugger/proc/ProcCFrame; | |
1006 * Description: fills CFrame list for a given thread | |
1007 */ | |
1008 JNIEXPORT jobject JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_fillCFrameList0 | |
1009 (JNIEnv *env, jobject this_obj, jlongArray regsArray) { | |
1010 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
1011 | |
1012 DebuggerWith2Objects dbgo2; | |
1013 dbgo2.env = env; | |
1014 dbgo2.this_obj = this_obj; | |
1015 dbgo2.obj = NULL; | |
1016 dbgo2.obj2 = NULL; | |
1017 | |
1018 jboolean isCopy; | |
1019 jlong* ptr = env->GetLongArrayElements(regsArray, &isCopy); | |
1020 CHECK_EXCEPTION_(0); | |
1021 | |
1022 prgregset_t gregs; | |
1023 for (int i = 0; i < NPRGREG; i++) { | |
1024 gregs[i] = (uintptr_t) ptr[i]; | |
1025 } | |
1026 | |
1027 env->ReleaseLongArrayElements(regsArray, ptr, JNI_ABORT); | |
1028 CHECK_EXCEPTION_(0); | |
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1029 |
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1030 #ifdef SOLARIS_11_B159_OR_LATER |
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1031 // building on Nevada-B159 or later so use the new callback |
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1032 Pstack_iter((struct ps_prochandle*) p_ps_prochandle, gregs, |
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1033 wrapper_fill_cframe_list, &dbgo2); |
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1034 #else |
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1035 // building on Nevada-B158 or earlier so figure out which callback to use |
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1036 |
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1037 if (has_newer_Pstack_iter) { |
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1038 // Since we're building on Nevada-B158 or earlier, we have to |
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1039 // cast wrapper_fill_cframe_list to make the compiler happy. |
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1040 Pstack_iter((struct ps_prochandle*) p_ps_prochandle, gregs, |
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1041 (proc_stack_f *)wrapper_fill_cframe_list, &dbgo2); |
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1042 } else { |
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1043 Pstack_iter((struct ps_prochandle*) p_ps_prochandle, gregs, |
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1044 fill_cframe_list, &dbgo2); |
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1045 } |
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1046 #endif // SOLARIS_11_B159_OR_LATER |
0 | 1047 return dbgo2.obj; |
1048 } | |
1049 | |
1050 /* | |
1051 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1052 * Method: fillLoadObjectList0 | |
1053 * Signature: (Ljava/util/List;)V | |
1054 * Description: fills shared objects of the debuggee process/core | |
1055 */ | |
1056 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_fillLoadObjectList0 | |
1057 (JNIEnv *env, jobject this_obj, jobject list) { | |
1058 DebuggerWithObject dbgo; | |
1059 dbgo.env = env; | |
1060 dbgo.this_obj = this_obj; | |
1061 dbgo.obj = list; | |
1062 | |
1063 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
1064 Pobject_iter((struct ps_prochandle*) p_ps_prochandle, fill_load_object_list, &dbgo); | |
1065 } | |
1066 | |
1067 /* | |
1068 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1069 * Method: readBytesFromProcess0 | |
1070 * Signature: (JJ)[B | |
1071 * Description: read bytes from debuggee process/core | |
1072 */ | |
1073 JNIEXPORT jbyteArray JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_readBytesFromProcess0 | |
1074 (JNIEnv *env, jobject this_obj, jlong address, jlong numBytes) { | |
1075 | |
1076 jbyteArray array = env->NewByteArray(numBytes); | |
1077 CHECK_EXCEPTION_(0); | |
1078 jboolean isCopy; | |
1079 jbyte* bufPtr = env->GetByteArrayElements(array, &isCopy); | |
1080 CHECK_EXCEPTION_(0); | |
1081 | |
1082 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
1083 ps_err_e ret = ps_pread((struct ps_prochandle*) p_ps_prochandle, | |
1084 (psaddr_t)address, bufPtr, (size_t)numBytes); | |
1085 | |
1086 if (ret != PS_OK) { | |
1087 // part of the class sharing workaround. try shared heap area | |
1088 int classes_jsa_fd = env->GetIntField(this_obj, classes_jsa_fd_ID); | |
1089 if (classes_jsa_fd != -1 && address != (jlong)0) { | |
1090 print_debug("read failed at 0x%lx, attempting shared heap area\n", (long) address); | |
1091 | |
1092 struct FileMapHeader* pheader = (struct FileMapHeader*) env->GetLongField(this_obj, p_file_map_header_ID); | |
1093 // walk through the shared mappings -- we just have 4 of them. | |
1094 // so, linear walking is okay. | |
1095 for (int m = 0; m < NUM_SHARED_MAPS; m++) { | |
1096 | |
1097 // We can skip the non-read-only maps. These are mapped as MAP_PRIVATE | |
1098 // and hence will be read by libproc. Besides, the file copy may be | |
1099 // stale because the process might have modified those pages. | |
1100 if (pheader->_space[m]._read_only) { | |
1101 jlong baseAddress = (jlong) (uintptr_t) pheader->_space[m]._base; | |
1102 size_t usedSize = pheader->_space[m]._used; | |
1103 if (address >= baseAddress && address < (baseAddress + usedSize)) { | |
1104 // the given address falls in this shared heap area | |
1105 print_debug("found shared map at 0x%lx\n", (long) baseAddress); | |
1106 | |
1107 | |
1108 // If more data is asked than actually mapped from file, we need to zero fill | |
1109 // till the end-of-page boundary. But, java array new does that for us. we just | |
1110 // need to read as much as data available. | |
1111 | |
1112 #define MIN2(x, y) (((x) < (y))? (x) : (y)) | |
1113 | |
1114 jlong diff = address - baseAddress; | |
1115 jlong bytesToRead = MIN2(numBytes, usedSize - diff); | |
1116 off_t offset = pheader->_space[m]._file_offset + off_t(diff); | |
1117 ssize_t bytesRead = pread(classes_jsa_fd, bufPtr, bytesToRead, offset); | |
1118 if (bytesRead != bytesToRead) { | |
1119 env->ReleaseByteArrayElements(array, bufPtr, JNI_ABORT); | |
1120 print_debug("shared map read failed\n"); | |
1121 return jbyteArray(0); | |
1122 } else { | |
1123 print_debug("shared map read succeeded\n"); | |
1124 env->ReleaseByteArrayElements(array, bufPtr, 0); | |
1125 return array; | |
1126 } | |
1127 } // is in current map | |
1128 } // is read only map | |
1129 } // for shared maps | |
1130 } // classes_jsa_fd != -1 | |
1131 env->ReleaseByteArrayElements(array, bufPtr, JNI_ABORT); | |
1132 return jbyteArray(0); | |
1133 } else { | |
1134 env->ReleaseByteArrayElements(array, bufPtr, 0); | |
1135 return array; | |
1136 } | |
1137 } | |
1138 | |
1139 /* | |
1140 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1141 * Method: writeBytesToProcess0 | |
1142 * Signature: (JJ[B)V | |
1143 * Description: write bytes into debugger process | |
1144 */ | |
1145 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_writeBytesToProcess0 | |
1146 (JNIEnv *env, jobject this_obj, jlong address, jlong numBytes, jbyteArray data) { | |
1147 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
1148 jboolean isCopy; | |
1149 jbyte* ptr = env->GetByteArrayElements(data, &isCopy); | |
1150 CHECK_EXCEPTION; | |
1151 | |
1152 if (ps_pwrite((struct ps_prochandle*) p_ps_prochandle, address, ptr, numBytes) != PS_OK) { | |
1153 env->ReleaseByteArrayElements(data, ptr, JNI_ABORT); | |
1154 THROW_NEW_DEBUGGER_EXCEPTION("Process write failed!"); | |
1155 } | |
1156 | |
1157 env->ReleaseByteArrayElements(data, ptr, JNI_ABORT); | |
1158 } | |
1159 | |
1160 /* | |
1161 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1162 * Method: suspend0 | |
1163 * Signature: ()V | |
1164 */ | |
1165 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_suspend0 | |
1166 (JNIEnv *env, jobject this_obj) { | |
1167 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
1168 // for now don't check return value. revisit this again. | |
1169 Pstop((struct ps_prochandle*) p_ps_prochandle, 1000); | |
1170 } | |
1171 | |
1172 /* | |
1173 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1174 * Method: resume0 | |
1175 * Signature: ()V | |
1176 */ | |
1177 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_resume0 | |
1178 (JNIEnv *env, jobject this_obj) { | |
1179 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
1180 // for now don't check return value. revisit this again. | |
1181 Psetrun((struct ps_prochandle*) p_ps_prochandle, 0, PRCFAULT|PRSTOP); | |
1182 } | |
1183 | |
1184 /* | |
1185 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1186 * Method: lookupByName0 | |
1187 * Signature: (Ljava/lang/String;Ljava/lang/String;)J | |
1188 * Description: symbol lookup by name | |
1189 */ | |
1190 JNIEXPORT jlong JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_lookupByName0 | |
1191 (JNIEnv *env, jobject this_obj, jstring objectName, jstring symbolName) { | |
1192 jlong p_ps_prochandle; | |
1193 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
1194 | |
1195 jboolean isCopy; | |
1196 const char* objectName_cstr = NULL; | |
1197 if (objectName != NULL) { | |
1198 objectName_cstr = env->GetStringUTFChars(objectName, &isCopy); | |
1199 CHECK_EXCEPTION_(0); | |
1200 } else { | |
1201 objectName_cstr = PR_OBJ_EVERY; | |
1202 } | |
1203 | |
1204 const char* symbolName_cstr = env->GetStringUTFChars(symbolName, &isCopy); | |
1205 CHECK_EXCEPTION_(0); | |
1206 | |
1207 psaddr_t symbol_addr = (psaddr_t) 0; | |
1208 ps_pglobal_lookup((struct ps_prochandle*) p_ps_prochandle, objectName_cstr, | |
1209 symbolName_cstr, &symbol_addr); | |
1210 | |
1211 if (symbol_addr == 0) { | |
1212 print_debug("lookup for %s in %s failed\n", symbolName_cstr, objectName_cstr); | |
1213 } | |
1214 | |
1215 if (objectName_cstr != PR_OBJ_EVERY) { | |
1216 env->ReleaseStringUTFChars(objectName, objectName_cstr); | |
1217 } | |
1218 env->ReleaseStringUTFChars(symbolName, symbolName_cstr); | |
1219 return (jlong) (uintptr_t) symbol_addr; | |
1220 } | |
1221 | |
1222 /* | |
1223 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1224 * Method: lookupByAddress0 | |
1225 * Signature: (J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol; | |
1226 * Description: lookup symbol name for a given address | |
1227 */ | |
1228 JNIEXPORT jobject JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_lookupByAddress0 | |
1229 (JNIEnv *env, jobject this_obj, jlong address) { | |
1230 jlong p_ps_prochandle; | |
1231 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID); | |
1232 | |
1233 char nameBuf[SYMBOL_BUF_SIZE + 1]; | |
1234 GElf_Sym sym; | |
1235 int res = Plookup_by_addr((struct ps_prochandle*) p_ps_prochandle, (uintptr_t) address, | |
1236 nameBuf, sizeof(nameBuf), &sym); | |
1237 if (res != 0) { // failed | |
1238 return 0; | |
1239 } | |
1240 | |
1241 jstring resSym = env->NewStringUTF(nameBuf); | |
1242 CHECK_EXCEPTION_(0); | |
1243 | |
1244 return env->CallObjectMethod(this_obj, createClosestSymbol_ID, resSym, (address - sym.st_value)); | |
1245 } | |
1246 | |
1247 /* | |
1248 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1249 * Method: demangle0 | |
1250 * Signature: (Ljava/lang/String;)Ljava/lang/String; | |
1251 */ | |
1252 JNIEXPORT jstring JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_demangle0 | |
1253 (JNIEnv *env, jobject this_object, jstring name) { | |
1254 jboolean isCopy; | |
1255 const char* ptr = env->GetStringUTFChars(name, &isCopy); | |
1256 char buf[2*SYMBOL_BUF_SIZE + 1]; | |
1257 jstring res = 0; | |
1258 if (cplus_demangle((char*) ptr, buf, sizeof(buf)) != DEMANGLE_ESPACE) { | |
1259 res = env->NewStringUTF(buf); | |
1260 } else { | |
1261 res = name; | |
1262 } | |
1263 env->ReleaseStringUTFChars(name, ptr); | |
1264 return res; | |
1265 } | |
1266 | |
3306
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1267 #ifndef SOLARIS_11_B159_OR_LATER |
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1268 // Determine if the OS we're running on has the newer version |
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1269 // of libproc's Pstack_iter. |
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1270 // |
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1271 // Set env var PSTACK_ITER_DEBUG=true to debug this logic. |
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1272 // Set env var PSTACK_ITER_DEBUG_RELEASE to simulate a 'release' value. |
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1273 // Set env var PSTACK_ITER_DEBUG_VERSION to simulate a 'version' value. |
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1274 // |
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1275 // frankenputer 'uname -r -v': 5.10 Generic_141445-09 |
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1276 // jurassic 'uname -r -v': 5.11 snv_164 |
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1277 // lonepeak 'uname -r -v': 5.11 snv_127 |
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1278 // |
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1279 static void set_has_newer_Pstack_iter(JNIEnv *env) { |
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1280 static bool done_set = false; |
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1281 |
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1282 if (done_set) { |
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1283 // already set has_newer_Pstack_iter |
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1284 return; |
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|
1285 } |
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|
1286 |
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|
1287 struct utsname name; |
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1288 if (uname(&name) == -1) { |
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1289 THROW_NEW_DEBUGGER_EXCEPTION("uname() failed!"); |
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|
1290 } |
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|
1291 dprintf_2("release='%s' version='%s'\n", name.release, name.version); |
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1292 |
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1293 if (_Pstack_iter_debug) { |
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1294 char *override = getenv("PSTACK_ITER_DEBUG_RELEASE"); |
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1295 if (override != NULL) { |
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1296 strncpy(name.release, override, SYS_NMLN - 1); |
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1297 name.release[SYS_NMLN - 2] = '\0'; |
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1298 dprintf_2("overriding with release='%s'\n", name.release); |
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1299 } |
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1300 override = getenv("PSTACK_ITER_DEBUG_VERSION"); |
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1301 if (override != NULL) { |
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1302 strncpy(name.version, override, SYS_NMLN - 1); |
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1303 name.version[SYS_NMLN - 2] = '\0'; |
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1304 dprintf_2("overriding with version='%s'\n", name.version); |
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1305 } |
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1306 } |
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1307 |
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1308 // the major number corresponds to the old SunOS major number |
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1309 int major = atoi(name.release); |
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1310 if (major >= 6) { |
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1311 dprintf_2("release is SunOS 6 or later\n"); |
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|
1312 has_newer_Pstack_iter = true; |
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1313 done_set = true; |
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1314 return; |
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|
1315 } |
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1316 if (major < 5) { |
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1317 dprintf_2("release is SunOS 4 or earlier\n"); |
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1318 done_set = true; |
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1319 return; |
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|
1320 } |
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1321 |
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1322 // some SunOS 5.* build so now check for Solaris versions |
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1323 char *dot = strchr(name.release, '.'); |
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1324 int minor = 0; |
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1325 if (dot != NULL) { |
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1326 // release is major.minor format |
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1327 *dot = NULL; |
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1328 minor = atoi(dot + 1); |
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1329 } |
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|
1330 |
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1331 if (minor <= 10) { |
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1332 dprintf_2("release is Solaris 10 or earlier\n"); |
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1333 done_set = true; |
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1334 return; |
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1335 } else if (minor >= 12) { |
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1336 dprintf_2("release is Solaris 12 or later\n"); |
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1337 has_newer_Pstack_iter = true; |
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1338 done_set = true; |
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1339 return; |
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|
1340 } |
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1341 |
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1342 // some Solaris 11 build so now check for internal build numbers |
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1343 if (strncmp(name.version, "snv_", 4) != 0) { |
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|
1344 dprintf_2("release is Solaris 11 post-GA or later\n"); |
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|
1345 has_newer_Pstack_iter = true; |
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|
1346 done_set = true; |
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|
1347 return; |
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|
1348 } |
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|
1349 |
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1350 // version begins with "snv_" so a pre-GA build of Solaris 11 |
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|
1351 int build = atoi(&name.version[4]); |
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|
1352 if (build >= 159) { |
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|
1353 dprintf_2("release is Nevada-B159 or later\n"); |
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changeset
|
1354 has_newer_Pstack_iter = true; |
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|
1355 } else { |
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changeset
|
1356 dprintf_2("release is Nevada-B158 or earlier\n"); |
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|
1357 } |
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|
1358 |
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|
1359 done_set = true; |
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1360 } |
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1361 #endif // !SOLARIS_11_B159_OR_LATER |
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1362 |
0 | 1363 /* |
1364 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal | |
1365 * Method: initIDs | |
1366 * Signature: ()V | |
1367 * Description: get JNI ids for fields and methods of ProcDebuggerLocal class | |
1368 */ | |
1369 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_initIDs | |
1370 (JNIEnv *env, jclass clazz) { | |
1371 _libsaproc_debug = getenv("LIBSAPROC_DEBUG") != NULL; | |
1372 if (_libsaproc_debug) { | |
1373 // propagate debug mode to libproc.so | |
1374 static const char* var = "LIBPROC_DEBUG=1"; | |
1375 putenv((char*)var); | |
1376 } | |
1377 | |
1378 void* libproc_handle = dlopen("libproc.so", RTLD_LAZY | RTLD_GLOBAL); | |
1379 if (libproc_handle == 0) | |
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 | |
3306
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1382 #ifndef SOLARIS_11_B159_OR_LATER |
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1383 _Pstack_iter_debug = getenv("PSTACK_ITER_DEBUG") != NULL; |
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1384 |
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1385 set_has_newer_Pstack_iter(env); |
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1386 CHECK_EXCEPTION; |
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1387 dprintf_2("has_newer_Pstack_iter=%d\n", has_newer_Pstack_iter); |
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1388 #endif |
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1389 |
0 | 1390 p_ps_prochandle_ID = env->GetFieldID(clazz, "p_ps_prochandle", "J"); |
1391 CHECK_EXCEPTION; | |
1392 | |
1393 libthread_db_handle_ID = env->GetFieldID(clazz, "libthread_db_handle", "J"); | |
1394 CHECK_EXCEPTION; | |
1395 | |
1396 p_td_thragent_t_ID = env->GetFieldID(clazz, "p_td_thragent_t", "J"); | |
1397 CHECK_EXCEPTION; | |
1398 | |
1399 p_td_init_ID = env->GetFieldID(clazz, "p_td_init", "J"); | |
1400 CHECK_EXCEPTION; | |
1401 | |
1402 p_td_ta_new_ID = env->GetFieldID(clazz, "p_td_ta_new", "J"); | |
1403 CHECK_EXCEPTION; | |
1404 | |
1405 p_td_ta_delete_ID = env->GetFieldID(clazz, "p_td_ta_delete", "J"); | |
1406 CHECK_EXCEPTION; | |
1407 | |
1408 p_td_ta_thr_iter_ID = env->GetFieldID(clazz, "p_td_ta_thr_iter", "J"); | |
1409 CHECK_EXCEPTION; | |
1410 | |
1411 p_td_thr_get_info_ID = env->GetFieldID(clazz, "p_td_thr_get_info", "J"); | |
1412 CHECK_EXCEPTION; | |
1413 | |
1414 p_td_ta_map_id2thr_ID = env->GetFieldID(clazz, "p_td_ta_map_id2thr", "J"); | |
1415 CHECK_EXCEPTION; | |
1416 | |
1417 p_td_thr_getgregs_ID = env->GetFieldID(clazz, "p_td_thr_getgregs", "J"); | |
1418 CHECK_EXCEPTION; | |
1419 | |
1420 getThreadForThreadId_ID = env->GetMethodID(clazz, | |
1421 "getThreadForThreadId", "(J)Lsun/jvm/hotspot/debugger/ThreadProxy;"); | |
1422 CHECK_EXCEPTION; | |
1423 | |
1424 pcRegIndex_ID = env->GetFieldID(clazz, "pcRegIndex", "I"); | |
1425 CHECK_EXCEPTION; | |
1426 | |
1427 fpRegIndex_ID = env->GetFieldID(clazz, "fpRegIndex", "I"); | |
1428 CHECK_EXCEPTION; | |
1429 | |
1430 createSenderFrame_ID = env->GetMethodID(clazz, | |
1431 "createSenderFrame", "(Lsun/jvm/hotspot/debugger/proc/ProcCFrame;JJ)Lsun/jvm/hotspot/debugger/proc/ProcCFrame;"); | |
1432 CHECK_EXCEPTION; | |
1433 | |
1434 createLoadObject_ID = env->GetMethodID(clazz, | |
1435 "createLoadObject", "(Ljava/lang/String;JJ)Lsun/jvm/hotspot/debugger/cdbg/LoadObject;"); | |
1436 CHECK_EXCEPTION; | |
1437 | |
1438 createClosestSymbol_ID = env->GetMethodID(clazz, | |
1439 "createClosestSymbol", "(Ljava/lang/String;J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol;"); | |
1440 CHECK_EXCEPTION; | |
1441 | |
1442 listAdd_ID = env->GetMethodID(env->FindClass("java/util/List"), "add", "(Ljava/lang/Object;)Z"); | |
1443 CHECK_EXCEPTION; | |
1444 | |
1445 // part of the class sharing workaround | |
1446 classes_jsa_fd_ID = env->GetFieldID(clazz, "classes_jsa_fd", "I"); | |
1447 CHECK_EXCEPTION; | |
1448 p_file_map_header_ID = env->GetFieldID(clazz, "p_file_map_header", "J"); | |
1449 CHECK_EXCEPTION; | |
1450 } |