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76bdc726 | 1 | /* Copyright (C) 2021-2023 Free Software Foundation, Inc. |
bb368aad VM |
2 | Contributed by Oracle. |
3 | ||
4 | This file is part of GNU Binutils. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3, or (at your option) | |
9 | any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, 51 Franklin Street - Fifth Floor, Boston, | |
19 | MA 02110-1301, USA. */ | |
20 | ||
21 | #include "config.h" | |
22 | ||
23 | #if defined(GPROFNG_JAVA_PROFILING) | |
24 | #include <alloca.h> | |
25 | #include <dlfcn.h> /* dlsym() */ | |
26 | #include <sys/stat.h> | |
27 | #include <fcntl.h> | |
28 | #include <unistd.h> | |
29 | #include <errno.h> | |
30 | #include <sys/param.h> /* MAXPATHLEN */ | |
31 | ||
32 | #include <jni.h> | |
33 | #include <jvmti.h> | |
34 | ||
35 | #include "gp-defs.h" | |
36 | #include "collector.h" | |
37 | #include "gp-experiment.h" | |
38 | #include "tsd.h" | |
39 | ||
40 | /* TprintfT(<level>,...) definitions. Adjust per module as needed */ | |
41 | #define DBG_LT0 0 // for high-level configuration, unexpected errors/warnings | |
42 | #define DBG_LT1 1 // for configuration details, warnings | |
43 | #define DBG_LT2 2 | |
44 | #define DBG_LT3 3 | |
45 | ||
46 | /* ARCH_STRLEN is defined in dbe, copied here */ | |
47 | #define ARCH_STRLEN(s) ((CALL_UTIL(strlen)(s) + 4 ) & ~0x3) | |
48 | ||
49 | /* call frame */ | |
50 | typedef struct | |
51 | { | |
52 | jint lineno; /* line number in the source file */ | |
53 | jmethodID method_id; /* method executed in this frame */ | |
54 | } JVMPI_CallFrame; | |
55 | ||
56 | /* call trace */ | |
57 | typedef struct | |
58 | { | |
59 | JNIEnv *env_id; /* Env where trace was recorded */ | |
60 | jint num_frames; /* number of frames in this trace */ | |
61 | JVMPI_CallFrame *frames; /* frames */ | |
62 | } JVMPI_CallTrace; | |
63 | ||
64 | extern void __collector_jprofile_enable_synctrace (void); | |
65 | int __collector_jprofile_start_attach (void); | |
66 | static int init_interface (CollectorInterface*); | |
67 | static int open_experiment (const char *); | |
68 | static int close_experiment (void); | |
69 | static int detach_experiment (void); | |
70 | static void jprof_find_asyncgetcalltrace (void); | |
71 | static char *apistr = NULL; | |
72 | ||
73 | static ModuleInterface module_interface = { | |
74 | "*"SP_JCLASSES_FILE, /* description, exempt from limit */ | |
75 | init_interface, /* initInterface */ | |
76 | open_experiment, /* openExperiment */ | |
77 | NULL, /* startDataCollection */ | |
78 | NULL, /* stopDataCollection */ | |
79 | close_experiment, /* closeExperiment */ | |
80 | detach_experiment /* detachExperiment (fork child) */ | |
81 | }; | |
82 | ||
83 | static CollectorInterface *collector_interface = NULL; | |
84 | static CollectorModule jprof_hndl = COLLECTOR_MODULE_ERR; | |
85 | static int __collector_java_attach = 0; | |
86 | static JavaVM *jvm; | |
87 | static jmethodID getResource = NULL; | |
88 | static jmethodID toExternalForm = NULL; | |
89 | ||
90 | /* Java profiling thread specific data */ | |
91 | typedef struct TSD_Entry | |
92 | { | |
93 | JNIEnv *env; | |
94 | hrtime_t tstamp; | |
95 | } TSD_Entry; | |
96 | ||
97 | static unsigned tsd_key = COLLECTOR_TSD_INVALID_KEY; | |
98 | static collector_mutex_t jclasses_lock = COLLECTOR_MUTEX_INITIALIZER; | |
99 | static int java_gc_on = 0; | |
100 | static int java_mem_mode = 0; | |
101 | static int java_sync_mode = 0; | |
102 | static int is_hotspot_vm = 0; | |
103 | static void get_jvm_settings (); | |
104 | static void rwrite (int fd, const void *buf, size_t nbyte); | |
105 | static void addToDynamicArchive (const char* name, const unsigned char* class_data, int class_data_len); | |
106 | static void (*AsyncGetCallTrace)(JVMPI_CallTrace*, jint, ucontext_t*) = NULL; | |
107 | static void (*collector_heap_record)(int, int, void*) = NULL; | |
108 | static void (*collector_jsync_begin)() = NULL; | |
109 | static void (*collector_jsync_end)(hrtime_t, void *) = NULL; | |
110 | ||
111 | #define gethrtime collector_interface->getHiResTime | |
112 | ||
113 | /* | |
114 | * JVMTI declarations | |
115 | */ | |
116 | ||
117 | static jvmtiEnv *jvmti; | |
118 | static void jvmti_VMInit (jvmtiEnv*, JNIEnv*, jthread); | |
119 | static void jvmti_VMDeath (jvmtiEnv*, JNIEnv*); | |
120 | static void jvmti_ThreadStart (jvmtiEnv*, JNIEnv*, jthread); | |
121 | static void jvmti_ThreadEnd (jvmtiEnv*, JNIEnv*, jthread); | |
122 | static void jvmti_CompiledMethodLoad (jvmtiEnv*, jmethodID, jint, const void*, | |
123 | jint, const jvmtiAddrLocationMap*, const void*); | |
124 | static void jvmti_CompiledMethodUnload (jvmtiEnv*, jmethodID, const void*); | |
125 | static void jvmti_DynamicCodeGenerated (jvmtiEnv*, const char*, const void*, jint); | |
126 | static void jvmti_ClassPrepare (jvmtiEnv*, JNIEnv*, jthread, jclass); | |
127 | static void jvmti_ClassLoad (jvmtiEnv*, JNIEnv*, jthread, jclass); | |
128 | //static void jvmti_ClassUnload( jvmtiEnv*, JNIEnv*, jthread, jclass ); | |
129 | static void jvmti_MonitorEnter (jvmtiEnv *, JNIEnv*, jthread, jobject); | |
130 | static void jvmti_MonitorEntered (jvmtiEnv *, JNIEnv*, jthread, jobject); | |
131 | #if 0 | |
132 | static void jvmti_MonitorWait (jvmtiEnv *, JNIEnv*, jthread, jobject, jlong); | |
133 | static void jvmti_MonitorWaited (jvmtiEnv *, JNIEnv*, jthread, jobject, jboolean); | |
134 | #endif | |
135 | static void jvmti_ClassFileLoadHook (jvmtiEnv *jvmti_env, JNIEnv* jni_env, jclass class_being_redefined, | |
136 | jobject loader, const char* name, jobject protection_domain, | |
137 | jint class_data_len, const unsigned char* class_data, | |
138 | jint* new_class_data_len, unsigned char** new_class_data); | |
139 | static void jvmti_GarbageCollectionStart (jvmtiEnv *); | |
140 | static void | |
141 | jvmti_GarbageCollectionFinish (jvmtiEnv *); | |
142 | jvmtiEventCallbacks callbacks = { | |
143 | jvmti_VMInit, // 50 jvmtiEventVMInit; | |
144 | jvmti_VMDeath, // 51 jvmtiEventVMDeath; | |
145 | jvmti_ThreadStart, // 52 jvmtiEventThreadStart; | |
146 | jvmti_ThreadEnd, // 53 jvmtiEventThreadEnd; | |
147 | jvmti_ClassFileLoadHook, // 54 jvmtiEventClassFileLoadHook; | |
148 | jvmti_ClassLoad, // 55 jvmtiEventClassLoad; | |
149 | jvmti_ClassPrepare, // 56 jvmtiEventClassPrepare; | |
150 | NULL, // 57 reserved57; | |
151 | NULL, // 58 jvmtiEventException; | |
152 | NULL, // 59 jvmtiEventExceptionCatch; | |
153 | NULL, // 60 jvmtiEventSingleStep; | |
154 | NULL, // 61 jvmtiEventFramePop; | |
155 | NULL, // 62 jvmtiEventBreakpoint; | |
156 | NULL, // 63 jvmtiEventFieldAccess; | |
157 | NULL, // 64 jvmtiEventFieldModification; | |
158 | NULL, // 65 jvmtiEventMethodEntry; | |
159 | NULL, // 66 jvmtiEventMethodExit; | |
160 | NULL, // 67 jvmtiEventNativeMethodBind; | |
161 | jvmti_CompiledMethodLoad, // 68 jvmtiEventCompiledMethodLoad; | |
162 | jvmti_CompiledMethodUnload, // 69 jvmtiEventCompiledMethodUnload; | |
163 | jvmti_DynamicCodeGenerated, // 70 jvmtiEventDynamicCodeGenerated; | |
164 | NULL, // 71 jvmtiEventDataDumpRequest; | |
165 | NULL, // 72 jvmtiEventDataResetRequest; | |
166 | NULL, /*jvmti_MonitorWait,*/ // 73 jvmtiEventMonitorWait; | |
167 | NULL, /*jvmti_MonitorWaited,*/ // 74 jvmtiEventMonitorWaited; | |
168 | jvmti_MonitorEnter, // 75 jvmtiEventMonitorContendedEnter; | |
169 | jvmti_MonitorEntered, // 76 jvmtiEventMonitorContendedEntered; | |
170 | NULL, // 77 jvmtiEventMonitorContendedExit; | |
171 | NULL, // 78 jvmtiEventReserved; | |
172 | NULL, // 79 jvmtiEventReserved; | |
173 | NULL, // 80 jvmtiEventReserved; | |
174 | jvmti_GarbageCollectionStart, // 81 jvmtiEventGarbageCollectionStart; | |
175 | jvmti_GarbageCollectionFinish, // 82 jvmtiEventGarbageCollectionFinish; | |
176 | NULL, // 83 jvmtiEventObjectFree; | |
177 | NULL // 84 jvmtiEventVMObjectAlloc; | |
178 | }; | |
179 | ||
180 | typedef jint (JNICALL JNI_GetCreatedJavaVMs_t)(JavaVM **, jsize, jsize *); | |
181 | ||
182 | int | |
183 | init_interface (CollectorInterface *_collector_interface) | |
184 | { | |
185 | collector_interface = _collector_interface; | |
186 | return COL_ERROR_NONE; | |
187 | } | |
188 | ||
189 | static int | |
190 | open_experiment (const char *exp) | |
191 | { | |
192 | if (collector_interface == NULL) | |
193 | return COL_ERROR_JAVAINIT; | |
194 | TprintfT (0, "jprofile: open_experiment %s\n", exp); | |
195 | const char *params = collector_interface->getParams (); | |
196 | const char *args = params; | |
197 | while (args) | |
198 | { | |
199 | if (__collector_strStartWith (args, "j:") == 0) | |
200 | { | |
201 | args += 2; | |
202 | break; | |
203 | } | |
204 | args = CALL_UTIL (strchr)(args, ';'); | |
205 | if (args) | |
206 | args++; | |
207 | } | |
208 | if (args == NULL) /* Java profiling not specified */ | |
209 | return COL_ERROR_JAVAINIT; | |
210 | tsd_key = collector_interface->createKey (sizeof ( TSD_Entry), NULL, NULL); | |
211 | if (tsd_key == (unsigned) - 1) | |
212 | { | |
213 | TprintfT (0, "jprofile: TSD key create failed.\n"); | |
214 | collector_interface->writeLog ("<event kind=\"%s\" id=\"%d\">TSD key not created</event>\n", | |
215 | SP_JCMD_CERROR, COL_ERROR_JAVAINIT); | |
216 | return COL_ERROR_JAVAINIT; | |
217 | } | |
218 | else | |
219 | Tprintf (DBG_LT2, "jprofile: TSD key create succeeded %d.\n", tsd_key); | |
220 | ||
221 | args = params; | |
222 | while (args) | |
223 | { | |
224 | if (__collector_strStartWith (args, "H:") == 0) | |
225 | { | |
226 | java_mem_mode = 1; | |
227 | collector_heap_record = (void(*)(int, int, void*))dlsym (RTLD_DEFAULT, "__collector_heap_record"); | |
228 | } | |
229 | #if 0 | |
230 | else if (__collector_strStartWith (args, "s:") == 0) | |
231 | { | |
232 | java_sync_mode = 1; | |
233 | collector_jsync_begin = (void(*)(hrtime_t, void *))dlsym (RTLD_DEFAULT, "__collector_jsync_begin"); | |
234 | collector_jsync_end = (void(*)(hrtime_t, void *))dlsym (RTLD_DEFAULT, "__collector_jsync_end"); | |
235 | } | |
236 | #endif | |
237 | args = CALL_UTIL (strchr)(args, ';'); | |
238 | if (args) | |
239 | args++; | |
240 | } | |
241 | ||
242 | /* synchronization tracing is enabled by the synctrace module, later in initialization */ | |
243 | __collector_java_mode = 1; | |
244 | java_gc_on = 1; | |
245 | return COL_ERROR_NONE; | |
246 | } | |
247 | ||
248 | /* routine called from the syntrace module to enable Java-API synctrace */ | |
249 | void | |
250 | __collector_jprofile_enable_synctrace () | |
251 | { | |
252 | if (__collector_java_mode == 0) | |
253 | { | |
254 | TprintfT (DBG_LT1, "jprofile: not turning on Java synctrace; Java mode not enabled\n"); | |
255 | return; | |
256 | } | |
257 | java_sync_mode = 1; | |
258 | collector_jsync_begin = (void(*)(hrtime_t, void *))dlsym (RTLD_DEFAULT, "__collector_jsync_begin"); | |
259 | collector_jsync_end = (void(*)(hrtime_t, void *))dlsym (RTLD_DEFAULT, "__collector_jsync_end"); | |
260 | TprintfT (DBG_LT1, "jprofile: turning on Java synctrace, and requesting events\n"); | |
261 | } | |
262 | ||
263 | int | |
264 | __collector_jprofile_start_attach (void) | |
265 | { | |
266 | if (!__collector_java_mode || __collector_java_asyncgetcalltrace_loaded) | |
267 | return 0; | |
268 | void *g_sHandle = RTLD_DEFAULT; | |
269 | /* Now get the function addresses */ | |
270 | JNI_GetCreatedJavaVMs_t *pfnGetCreatedJavaVMs; | |
271 | pfnGetCreatedJavaVMs = (JNI_GetCreatedJavaVMs_t *) dlsym (g_sHandle, "JNI_GetCreatedJavaVMs"); | |
272 | if (pfnGetCreatedJavaVMs != NULL) | |
273 | { | |
274 | TprintfT (0, "jprofile attach: pfnGetCreatedJavaVMs is detected.\n"); | |
275 | JavaVM * vmBuf[1]; // XXXX only detect on jvm | |
276 | jsize nVMs = 0; | |
277 | (*pfnGetCreatedJavaVMs)(vmBuf, 1, &nVMs); | |
278 | if (vmBuf[0] != NULL && nVMs > 0) | |
279 | { | |
280 | jvm = vmBuf[0]; | |
281 | JNIEnv* jni_env = NULL; | |
282 | (*jvm)->AttachCurrentThread (jvm, (void **) &jni_env, NULL); | |
283 | Agent_OnLoad (jvm, NULL, NULL); | |
284 | if ((*jvm)->GetEnv (jvm, (void **) &jni_env, JNI_VERSION_1_2) >= 0 && jni_env && jvmti) | |
285 | { | |
286 | jthread thread; | |
287 | (*jvmti)->GetCurrentThread (jvmti, &thread); | |
bb368aad VM |
288 | jvmti_VMInit (jvmti, jni_env, thread); |
289 | (*jvmti)->GenerateEvents (jvmti, JVMTI_EVENT_COMPILED_METHOD_LOAD); | |
290 | (*jvmti)->GenerateEvents (jvmti, JVMTI_EVENT_DYNAMIC_CODE_GENERATED); | |
291 | __collector_java_attach = 1; | |
292 | (*jvm)->DetachCurrentThread (jvm); | |
293 | } | |
294 | } | |
295 | } | |
296 | return 0; | |
297 | } | |
298 | ||
299 | static int | |
300 | close_experiment (void) | |
301 | { | |
302 | /* fixme XXXXX add content here */ | |
303 | /* see detach_experiment() */ | |
304 | __collector_java_mode = 0; | |
305 | __collector_java_asyncgetcalltrace_loaded = 0; | |
306 | __collector_java_attach = 0; | |
307 | java_gc_on = 0; | |
308 | java_mem_mode = 0; | |
309 | java_sync_mode = 0; | |
310 | is_hotspot_vm = 0; | |
311 | __collector_mutex_init (&jclasses_lock); | |
312 | tsd_key = COLLECTOR_TSD_INVALID_KEY; | |
313 | TprintfT (0, "jprofile: experiment closed.\n"); | |
314 | return 0; | |
315 | } | |
316 | ||
317 | static int | |
318 | detach_experiment (void) | |
319 | /* fork child. Clean up state but don't write to experiment */ | |
320 | { | |
321 | __collector_java_mode = 0; | |
322 | java_gc_on = 0; | |
323 | jvm = NULL; | |
324 | java_mem_mode = 0; | |
325 | java_sync_mode = 0; | |
326 | is_hotspot_vm = 0; | |
327 | jvmti = NULL; | |
328 | apistr = NULL; | |
329 | __collector_mutex_init (&jclasses_lock); | |
330 | tsd_key = COLLECTOR_TSD_INVALID_KEY; | |
331 | TprintfT (0, "jprofile: detached from experiment.\n"); | |
332 | return 0; | |
333 | } | |
334 | ||
335 | JNIEXPORT jint JNICALL | |
336 | JVM_OnLoad (JavaVM *vm, char *options, void *reserved) | |
337 | { | |
338 | jvmtiError err; | |
339 | int use_jvmti = 0; | |
340 | if (!__collector_java_mode) | |
341 | { | |
342 | TprintfT (DBG_LT1, "jprofile: JVM_OnLoad invoked with java mode disabled\n"); | |
343 | return JNI_OK; | |
344 | } | |
345 | else | |
346 | TprintfT (DBG_LT1, "jprofile: JVM_OnLoad invoked\n"); | |
347 | jvm = vm; | |
348 | jvmti = NULL; | |
349 | if ((*jvm)->GetEnv (jvm, (void **) &jvmti, JVMTI_VERSION_1_0) >= 0 && jvmti) | |
350 | { | |
351 | TprintfT (DBG_LT1, "jprofile: JVMTI found\n"); | |
352 | use_jvmti = 1; | |
353 | } | |
354 | if (!use_jvmti) | |
355 | { | |
356 | collector_interface->writeLog ("<event kind=\"%s\" id=\"%d\"/>\n", | |
357 | SP_JCMD_CERROR, COL_ERROR_JVMNOTSUPP); | |
358 | return JNI_ERR; | |
359 | } | |
360 | else | |
361 | { | |
362 | Tprintf (DBG_LT0, "\tjprofile: Initializing for JVMTI\n"); | |
363 | apistr = "JVMTI 1.0"; | |
364 | ||
365 | // setup JVMTI | |
366 | jvmtiCapabilities cpblts; | |
367 | err = (*jvmti)->GetPotentialCapabilities (jvmti, &cpblts); | |
368 | if (err == JVMTI_ERROR_NONE) | |
369 | { | |
370 | jvmtiCapabilities cpblts_set; | |
371 | CALL_UTIL (memset)(&cpblts_set, 0, sizeof (cpblts_set)); | |
372 | ||
373 | /* Add only those capabilities that are among potential ones */ | |
374 | cpblts_set.can_get_source_file_name = cpblts.can_get_source_file_name; | |
375 | Tprintf (DBG_LT1, "\tjprofile: adding can_get_source_file_name capability: %u\n", cpblts.can_get_source_file_name); | |
376 | ||
377 | cpblts_set.can_generate_compiled_method_load_events = cpblts.can_generate_compiled_method_load_events; | |
378 | Tprintf (DBG_LT1, "\tjprofile: adding can_generate_compiled_method_load_events capability: %u\n", cpblts.can_generate_compiled_method_load_events); | |
379 | ||
380 | if (java_sync_mode) | |
381 | { | |
382 | cpblts_set.can_generate_monitor_events = cpblts.can_generate_monitor_events; | |
383 | Tprintf (DBG_LT1, "\tjprofile: adding can_generate_monitor_events capability: %u\n", cpblts.can_generate_monitor_events); | |
384 | } | |
385 | if (java_gc_on) | |
386 | { | |
387 | cpblts_set.can_generate_garbage_collection_events = cpblts.can_generate_garbage_collection_events; | |
388 | Tprintf (DBG_LT1, "\tjprofile: adding can_generate_garbage_collection_events capability: %u\n", cpblts.can_generate_garbage_collection_events); | |
389 | } | |
390 | err = (*jvmti)->AddCapabilities (jvmti, &cpblts_set); | |
391 | Tprintf (DBG_LT1, "\tjprofile: AddCapabilities() returns: %d\n", err); | |
392 | } | |
393 | err = (*jvmti)->SetEventCallbacks (jvmti, &callbacks, sizeof ( callbacks)); | |
394 | err = (*jvmti)->SetEventNotificationMode (jvmti, JVMTI_ENABLE, JVMTI_EVENT_VM_INIT, NULL); | |
395 | err = (*jvmti)->SetEventNotificationMode (jvmti, JVMTI_ENABLE, JVMTI_EVENT_VM_DEATH, NULL); | |
396 | err = (*jvmti)->SetEventNotificationMode (jvmti, JVMTI_ENABLE, JVMTI_EVENT_CLASS_PREPARE, NULL); | |
397 | err = (*jvmti)->SetEventNotificationMode (jvmti, JVMTI_ENABLE, JVMTI_EVENT_CLASS_LOAD, NULL); | |
398 | err = (*jvmti)->SetEventNotificationMode (jvmti, JVMTI_ENABLE, JVMTI_EVENT_COMPILED_METHOD_LOAD, NULL); | |
399 | err = (*jvmti)->SetEventNotificationMode (jvmti, JVMTI_ENABLE, JVMTI_EVENT_COMPILED_METHOD_UNLOAD, NULL); | |
400 | err = (*jvmti)->SetEventNotificationMode (jvmti, JVMTI_ENABLE, JVMTI_EVENT_DYNAMIC_CODE_GENERATED, NULL); | |
401 | err = (*jvmti)->SetEventNotificationMode (jvmti, JVMTI_ENABLE, JVMTI_EVENT_THREAD_START, NULL); | |
402 | err = (*jvmti)->SetEventNotificationMode (jvmti, JVMTI_ENABLE, JVMTI_EVENT_THREAD_END, NULL); | |
403 | err = (*jvmti)->SetEventNotificationMode (jvmti, JVMTI_ENABLE, JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, NULL); | |
404 | if (java_gc_on) | |
405 | { | |
406 | err = (*jvmti)->SetEventNotificationMode (jvmti, JVMTI_ENABLE, JVMTI_EVENT_GARBAGE_COLLECTION_START, NULL); | |
407 | err = (*jvmti)->SetEventNotificationMode (jvmti, JVMTI_ENABLE, JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, NULL); | |
408 | } | |
409 | if (java_mem_mode) | |
410 | { | |
411 | // err = (*jvmti)->SetEventNotificationMode( jvmti, JVMTI_ENABLE, <no event for heap tracing> , NULL ); | |
412 | collector_interface->writeLog ("<event kind=\"%s\" id=\"%d\"/>\n", | |
413 | SP_JCMD_CWARN, COL_WARN_NO_JAVA_HEAP); | |
414 | java_mem_mode = 0; | |
415 | } | |
416 | if (java_sync_mode) | |
417 | { | |
418 | err = (*jvmti)->SetEventNotificationMode (jvmti, JVMTI_ENABLE, JVMTI_EVENT_MONITOR_CONTENDED_ENTER, NULL); | |
419 | err = (*jvmti)->SetEventNotificationMode (jvmti, JVMTI_ENABLE, JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, NULL); | |
420 | //err = (*jvmti)->SetEventNotificationMode( jvmti, JVMTI_ENABLE, JVMTI_EVENT_MONITOR_WAIT, NULL ); | |
421 | //err = (*jvmti)->SetEventNotificationMode( jvmti, JVMTI_ENABLE, JVMTI_EVENT_MONITOR_WAITED, NULL ); | |
422 | } | |
423 | Tprintf (DBG_LT0, "\tjprofile: JVMTI initialized\n"); | |
424 | } | |
425 | ||
426 | /* JVM still uses collector API on Solaris to notify us about dynamically generated code. | |
427 | * If we ask it to generate events we'll end up with duplicate entries in the | |
428 | * map file. | |
429 | */ | |
430 | if (use_jvmti) | |
431 | { | |
432 | err = (*jvmti)->GenerateEvents (jvmti, JVMTI_EVENT_DYNAMIC_CODE_GENERATED); | |
433 | err = (*jvmti)->GenerateEvents (jvmti, JVMTI_EVENT_COMPILED_METHOD_LOAD); | |
434 | } | |
435 | Tprintf (DBG_LT1, "\tjprofile: JVM_OnLoad ok\n"); | |
436 | return JNI_OK; | |
437 | } | |
438 | ||
439 | /* This is currently just a placeholder */ | |
440 | JNIEXPORT jint JNICALL | |
441 | Agent_OnLoad (JavaVM *vm, char *options, void *reserved) | |
442 | { | |
443 | return JVM_OnLoad (vm, options, reserved); | |
444 | } | |
445 | ||
446 | static void | |
447 | rwrite (int fd, const void *buf, size_t nbyte) | |
448 | { | |
449 | size_t left = nbyte; | |
450 | size_t res; | |
451 | char *ptr = (char*) buf; | |
452 | while (left > 0) | |
453 | { | |
454 | res = CALL_UTIL (write)(fd, ptr, left); | |
455 | if (res == -1) | |
456 | { | |
457 | /* XXX: we can't write this record, we probably | |
458 | * can't write anything else. Ignore. | |
459 | */ | |
460 | return; | |
461 | } | |
462 | left -= res; | |
463 | ptr += res; | |
464 | } | |
465 | } | |
466 | ||
467 | void | |
468 | get_jvm_settings () | |
469 | { | |
470 | jint res; | |
471 | JNIEnv *jni; | |
472 | jclass jcls; | |
473 | jmethodID jmid; | |
474 | jstring jstrin; | |
475 | jstring jstrout; | |
476 | const char *str; | |
477 | res = (*jvm)->GetEnv (jvm, (void **) &jni, JNI_VERSION_1_2); | |
478 | if (res < 0) | |
479 | return; | |
480 | ||
481 | /* I'm not checking if results are valid as JVM is extremely | |
482 | * sensitive to exceptions that might occur during these JNI calls | |
483 | * and will die with a fatal error later anyway. | |
484 | */ | |
485 | jcls = (*jni)->FindClass (jni, "java/lang/System"); | |
486 | jmid = (*jni)->GetStaticMethodID (jni, jcls, "getProperty", "(Ljava/lang/String;)Ljava/lang/String;"); | |
487 | jstrin = (*jni)->NewStringUTF (jni, "java.class.path"); | |
488 | jstrout = (*jni)->CallStaticObjectMethod (jni, jcls, jmid, jstrin); | |
489 | str = jstrout ? (*jni)->GetStringUTFChars (jni, jstrout, NULL) : NULL; | |
490 | if (str) | |
491 | { | |
492 | collector_interface->writeLog ("<setting %s=\"%s\"/>\n", SP_JCMD_SRCHPATH, str); | |
493 | (*jni)->ReleaseStringUTFChars (jni, jstrout, str); | |
494 | } | |
495 | jstrin = (*jni)->NewStringUTF (jni, "sun.boot.class.path"); | |
496 | jstrout = (*jni)->CallStaticObjectMethod (jni, jcls, jmid, jstrin); | |
497 | str = jstrout ? (*jni)->GetStringUTFChars (jni, jstrout, NULL) : NULL; | |
498 | if (str) | |
499 | { | |
500 | collector_interface->writeLog ("<setting %s=\"%s\"/>\n", SP_JCMD_SRCHPATH, str); | |
501 | (*jni)->ReleaseStringUTFChars (jni, jstrout, str); | |
502 | } | |
503 | jstrin = (*jni)->NewStringUTF (jni, "java.home"); | |
504 | jstrout = (*jni)->CallStaticObjectMethod (jni, jcls, jmid, jstrin); | |
505 | str = jstrout ? (*jni)->GetStringUTFChars (jni, jstrout, NULL) : NULL; | |
506 | if (str) | |
507 | { | |
508 | collector_interface->writeLog ("<setting %s=\"%s/../src.zip\"/>\n", SP_JCMD_SRCHPATH, str); | |
509 | (*jni)->ReleaseStringUTFChars (jni, jstrout, str); | |
510 | } | |
511 | jstrin = (*jni)->NewStringUTF (jni, "java.vm.version"); | |
512 | jstrout = (*jni)->CallStaticObjectMethod (jni, jcls, jmid, jstrin); | |
513 | str = jstrout ? (*jni)->GetStringUTFChars (jni, jstrout, NULL) : NULL; | |
514 | if (str) | |
515 | { | |
516 | (void) collector_interface->writeLog ("<profile name=\"jprofile\" %s=\"%s\" %s=\"%s\"/>\n", | |
517 | SP_JCMD_JVERSION, str, "api", apistr != NULL ? apistr : "N/A"); | |
518 | if (__collector_strStartWith (str, "1.4.2_02") < 0) | |
519 | { | |
520 | (void) collector_interface->writeLog ("<event kind=\"%s\" id=\"%d\"/>\n", | |
521 | SP_JCMD_CWARN, COL_WARN_OLDJAVA); | |
522 | } | |
523 | (*jni)->ReleaseStringUTFChars (jni, jstrout, str); | |
524 | } | |
525 | is_hotspot_vm = 0; | |
526 | jstrin = (*jni)->NewStringUTF (jni, "sun.management.compiler"); | |
527 | jstrout = (*jni)->CallStaticObjectMethod (jni, jcls, jmid, jstrin); | |
528 | str = jstrout ? (*jni)->GetStringUTFChars (jni, jstrout, NULL) : NULL; | |
529 | if (str && __collector_strncmp (str, "HotSpot", 7) == 0) | |
530 | is_hotspot_vm = 1; | |
531 | ||
532 | /* Emulate System.setProperty( "collector.init", "true") */ | |
533 | jmid = (*jni)->GetStaticMethodID (jni, jcls, "setProperty", | |
534 | "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;"); | |
535 | jstrin = (*jni)->NewStringUTF (jni, "collector.init"); | |
536 | jstrout = (*jni)->NewStringUTF (jni, "true"); | |
537 | (*jni)->CallStaticObjectMethod (jni, jcls, jmid, jstrin, jstrout); | |
538 | } | |
539 | ||
540 | /* | |
541 | * JVMTI code | |
542 | */ | |
543 | ||
544 | static void | |
545 | jvmti_VMInit (jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread) | |
546 | { | |
547 | jint class_count = 0; | |
548 | jclass *classes = NULL; | |
549 | int i; | |
550 | TprintfT (DBG_LT1, "jprofile: jvmti_VMInit called\n"); | |
551 | get_jvm_settings (); | |
552 | ||
553 | /* determine loaded classes */ | |
554 | (*jvmti_env)->GetLoadedClasses (jvmti_env, &class_count, &classes); | |
555 | TprintfT (DBG_LT1, "jprofile: jvmti_VMInit initializing %d classes\n", class_count); | |
556 | for (i = 0; i < class_count; i++) | |
557 | { | |
558 | // PushLocalFrame | |
559 | jvmti_ClassPrepare (jvmti_env, jni_env, NULL, classes[i]); | |
560 | // PopLocalFrame | |
561 | // DeleteLocalRef( classes[i] ); | |
562 | } | |
563 | (*jvmti_env)->Deallocate (jvmti_env, (unsigned char*) classes); | |
564 | getResource = (*jni_env)->GetMethodID (jni_env, (*jni_env)->FindClass (jni_env, "java/lang/ClassLoader"), "getResource", "(Ljava/lang/String;)Ljava/net/URL;"); | |
565 | toExternalForm = (*jni_env)->GetMethodID (jni_env, (*jni_env)->FindClass (jni_env, "java/net/URL"), "toExternalForm", "()Ljava/lang/String;"); | |
566 | ||
567 | /* find the stack unwind routine */ | |
568 | jprof_find_asyncgetcalltrace (); | |
569 | } | |
570 | ||
571 | static void | |
572 | jvmti_VMDeath (jvmtiEnv *jvmti_env, JNIEnv* jni_env) | |
573 | { | |
574 | __collector_java_mode = 0; | |
575 | TprintfT (DBG_LT1, "jprofile: jvmti_VMDeath event received\n"); | |
576 | } | |
577 | ||
578 | static void | |
579 | jvmti_ThreadStart (jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread) | |
580 | { | |
581 | jvmtiError err; | |
582 | jvmtiThreadInfo t_info; | |
583 | char *thread_name, *group_name, *parent_name; | |
584 | hrtime_t hrt; | |
585 | collector_thread_t tid; | |
586 | thread_name = group_name = parent_name = NULL; | |
587 | hrt = gethrtime (); | |
588 | tid = __collector_thr_self (); | |
589 | TprintfT (DBG_LT1, "jprofile: jvmti_ThreadStart: thread: %lu jni_env=%p jthread=%p\n", | |
590 | (unsigned long) tid, jni_env, thread); | |
591 | err = (*jvmti_env)->GetThreadInfo (jvmti_env, thread, &t_info); | |
592 | if (err == JVMTI_ERROR_NONE) | |
593 | { | |
594 | jvmtiThreadGroupInfo g_info; | |
595 | thread_name = t_info.name; | |
596 | if (t_info.thread_group) | |
597 | { | |
598 | err = (*jvmti_env)->GetThreadGroupInfo (jvmti_env, t_info.thread_group, &g_info); | |
599 | if (err == JVMTI_ERROR_NONE) | |
600 | { | |
601 | group_name = g_info.name; | |
602 | if (g_info.parent) | |
603 | { | |
604 | jvmtiThreadGroupInfo p_info; | |
605 | err = (*jvmti_env)->GetThreadGroupInfo (jvmti_env, g_info.parent, &p_info); | |
606 | if (err == JVMTI_ERROR_NONE) | |
607 | { | |
608 | parent_name = p_info.name; | |
609 | // DeleteLocalRef( p_info.parent ); | |
610 | } | |
611 | // DeleteLocalRef( g_info.parent ); | |
612 | } | |
613 | } | |
614 | } | |
615 | // DeleteLocalRef( t_info.thread_group ); | |
616 | // DeleteLocalRef( t_info.context_class_loader ); | |
617 | } | |
618 | if (thread_name == NULL) | |
619 | thread_name = ""; | |
620 | if (group_name == NULL) | |
621 | group_name = ""; | |
622 | if (parent_name == NULL) | |
623 | parent_name = ""; | |
624 | collector_interface->writeLog ("<event kind=\"%s\" tstamp=\"%u.%09u\" name=\"%s\" grpname=\"%s\" prntname=\"%s\" tid=\"%lu\" jthr=\"0x%lx\" jenv=\"0x%lx\"/>\n", | |
625 | SP_JCMD_JTHRSTART, | |
626 | (unsigned) (hrt / NANOSEC), (unsigned) (hrt % NANOSEC), | |
627 | thread_name, | |
628 | group_name, | |
629 | parent_name, | |
630 | (unsigned long) tid, | |
631 | thread, | |
632 | jni_env | |
633 | ); | |
634 | TSD_Entry *tsd = collector_interface->getKey (tsd_key); | |
635 | if (tsd) | |
636 | tsd->env = jni_env; | |
637 | } | |
638 | ||
639 | static void | |
640 | jvmti_ThreadEnd (jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread) | |
641 | { | |
642 | hrtime_t hrt = gethrtime (); | |
643 | collector_thread_t tid = __collector_thr_self (); | |
644 | TprintfT (DBG_LT1, "jprofile: jvmti_ThreadEnd: thread: %lu jni_env=%p jthread=%p\n", | |
645 | (unsigned long) tid, jni_env, thread); | |
646 | ||
647 | collector_interface->writeLog ("<event kind=\"%s\" tstamp=\"%u.%09u\" tid=\"%lu\" jthr=\"0x%lx\" jenv=\"0x%lx\"/>\n", | |
648 | SP_JCMD_JTHREND, | |
649 | (unsigned) (hrt / NANOSEC), (unsigned) (hrt % NANOSEC), | |
650 | (unsigned long) tid, | |
651 | thread, | |
652 | jni_env | |
653 | ); | |
654 | TSD_Entry *tsd = collector_interface->getKey (tsd_key); | |
655 | if (tsd) | |
656 | tsd->env = NULL; | |
657 | } | |
658 | ||
659 | /* The following definitions are borrowed from file jvmticmlr.h, part of jdk7 */ | |
660 | typedef enum | |
661 | { | |
662 | JVMTI_CMLR_DUMMY = 1, | |
663 | JVMTI_CMLR_INLINE_INFO = 2 | |
664 | } jvmtiCMLRKind; | |
665 | ||
666 | /* | |
667 | * Record that represents arbitrary information passed through JVMTI | |
668 | * CompiledMethodLoadEvent void pointer. | |
669 | */ | |
670 | typedef struct _jvmtiCompiledMethodLoadRecordHeader | |
671 | { | |
672 | jvmtiCMLRKind kind; /* id for the kind of info passed in the record */ | |
673 | jint majorinfoversion; /* major and minor info version values. Init'ed */ | |
674 | jint minorinfoversion; /* to current version value in jvmtiExport.cpp. */ | |
675 | struct _jvmtiCompiledMethodLoadRecordHeader* next; | |
676 | } jvmtiCompiledMethodLoadRecordHeader; | |
677 | ||
678 | /* | |
679 | * Record that gives information about the methods on the compile-time | |
680 | * stack at a specific pc address of a compiled method. Each element in | |
681 | * the methods array maps to same element in the bcis array. | |
682 | */ | |
683 | typedef struct _PCStackInfo | |
684 | { | |
685 | void* pc; /* the pc address for this compiled method */ | |
686 | jint numstackframes; /* number of methods on the stack */ | |
687 | jmethodID* methods; /* array of numstackframes method ids */ | |
688 | jint* bcis; /* array of numstackframes bytecode indices */ | |
689 | } PCStackInfo; | |
690 | ||
691 | /* | |
692 | * Record that contains inlining information for each pc address of | |
693 | * an nmethod. | |
694 | */ | |
695 | typedef struct _jvmtiCompiledMethodLoadInlineRecord | |
696 | { | |
697 | jvmtiCompiledMethodLoadRecordHeader header; /* common header for casting */ | |
698 | jint numpcs; /* number of pc descriptors in this nmethod */ | |
699 | PCStackInfo* pcinfo; /* array of numpcs pc descriptors */ | |
700 | } jvmtiCompiledMethodLoadInlineRecord; | |
701 | ||
702 | static void | |
703 | jvmti_CompiledMethodLoad (jvmtiEnv *jvmti_env, jmethodID method, | |
704 | jint code_size, const void *code_addr, jint map_length, | |
705 | const jvmtiAddrLocationMap *map, | |
706 | const void *compile_info) | |
707 | { | |
708 | TprintfT (DBG_LT2, "jprofile: jvmti_CompiledMethodLoad: mid=0x%lx addr=%p sz=0x%lu map=%p info=%p\n", | |
709 | (unsigned long) method, code_addr, (long) code_size, map, compile_info); | |
710 | char name[32]; | |
711 | CALL_UTIL (snprintf)(name, sizeof (name), "0x%lx", (unsigned long) method); | |
712 | ||
713 | /* Parse compile_info to get pc -> bci mapping. | |
714 | * Don't interpret compile_info from JVMs other than HotSpot. | |
715 | */ | |
716 | int lntsize = 0; | |
717 | DT_lineno *lntable = NULL; | |
718 | if (compile_info != NULL && is_hotspot_vm) | |
719 | { | |
720 | Tprintf (DBG_LT2, "Mapping from compile_info:\n"); | |
721 | jvmtiCompiledMethodLoadRecordHeader *currec = | |
722 | (jvmtiCompiledMethodLoadRecordHeader*) compile_info; | |
723 | while (currec != NULL) | |
724 | { | |
725 | if (currec->kind == JVMTI_CMLR_INLINE_INFO) | |
726 | { | |
727 | jvmtiCompiledMethodLoadInlineRecord *inrec = | |
728 | (jvmtiCompiledMethodLoadInlineRecord*) currec; | |
729 | if (inrec->numpcs <= 0) | |
730 | break; | |
731 | lntsize = inrec->numpcs; | |
732 | lntable = (DT_lineno*) alloca (lntsize * sizeof (DT_lineno)); | |
733 | PCStackInfo *pcrec = inrec->pcinfo; | |
734 | DT_lineno *lnorec = lntable; | |
735 | for (int i = 0; i < lntsize; ++i) | |
736 | { | |
737 | for (int j = pcrec->numstackframes - 1; j >= 0; --j) | |
738 | if (pcrec->methods[j] == method) | |
739 | { | |
740 | lnorec->offset = (char*) pcrec->pc - (char*) code_addr; | |
741 | lnorec->lineno = pcrec->bcis[j]; | |
742 | Tprintf (DBG_LT2, " pc: 0x%lx bci: 0x%lx\n", | |
743 | (long) lnorec->offset, (long) lnorec->lineno); | |
744 | ++lnorec; | |
745 | break; | |
746 | } | |
747 | ++pcrec; | |
748 | } | |
749 | break; | |
750 | } | |
751 | currec = currec->next; | |
752 | } | |
753 | } | |
754 | else if (map != NULL) | |
755 | { | |
756 | Tprintf (DBG_LT2, "Mapping from jvmtiAddrLocationMap:\n"); | |
757 | lntsize = map_length; | |
758 | lntable = (DT_lineno*) alloca (lntsize * sizeof (DT_lineno)); | |
759 | DT_lineno *lnorec = lntable; | |
760 | for (int i = 0; i < map_length; ++i) | |
761 | { | |
762 | lnorec->offset = (char*) map[i].start_address - (char*) code_addr; | |
763 | lnorec->lineno = (unsigned int) map[i].location; | |
764 | Tprintf (DBG_LT2, " pc: 0x%lx bci: 0x%lx\n", | |
765 | (long) lnorec->offset, (long) lnorec->lineno); | |
766 | ++lnorec; | |
767 | } | |
768 | } | |
769 | __collector_int_func_load (DFUNC_JAVA, name, NULL, (void*) code_addr, | |
770 | code_size, lntsize, lntable); | |
771 | } | |
772 | ||
773 | static void | |
774 | jvmti_CompiledMethodUnload (jvmtiEnv *jvmti_env, jmethodID method, const void* code_addr) | |
775 | { | |
776 | __collector_int_func_unload (DFUNC_API, (void*) code_addr); | |
777 | } | |
778 | ||
779 | static void | |
780 | jvmti_DynamicCodeGenerated (jvmtiEnv *jvmti_env, const char*name, const void *code_addr, jint code_size) | |
781 | { | |
782 | __collector_int_func_load (DFUNC_API, (char*) name, NULL, (void*) code_addr, | |
783 | code_size, 0, NULL); | |
784 | } | |
785 | ||
786 | static void | |
787 | addToDynamicArchive (const char* name, const unsigned char* class_data, int class_data_len) | |
788 | { | |
789 | char path[MAXPATHLEN + 1]; | |
790 | mode_t fmode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH; | |
791 | mode_t dmode = fmode | S_IXUSR | S_IXGRP | S_IXOTH; | |
792 | if (name == NULL) | |
793 | name = ""; | |
794 | const char *expdir = collector_interface->getExpDir (); | |
795 | if (CALL_UTIL (strlen)(expdir) + | |
796 | CALL_UTIL (strlen)(SP_DYNAMIC_CLASSES) + | |
797 | CALL_UTIL (strlen)(name) + 8 > sizeof (path)) | |
798 | return; | |
799 | CALL_UTIL (snprintf)(path, sizeof (path), "%s/%s/%s.class", expdir, SP_DYNAMIC_CLASSES, name); | |
800 | ||
801 | /* Create all path components step by step starting with SP_DYNAMIC_CLASSES */ | |
802 | char *str = path + CALL_UTIL (strlen)(expdir) + 1 + CALL_UTIL (strlen)(SP_DYNAMIC_CLASSES); | |
803 | while (str) | |
804 | { | |
805 | *str = '\0'; | |
806 | if (CALL_UTIL (mkdir)(path, dmode) != 0) | |
807 | { | |
808 | /* Checking for EEXIST is not enough, access() is more reliable */ | |
809 | if (CALL_UTIL (access)(path, F_OK) != 0) | |
810 | { | |
811 | collector_interface->writeLog ("<event kind=\"%s\" id=\"%d\" ec=\"%d\">%s</event>\n", | |
812 | SP_JCMD_CERROR, COL_ERROR_MKDIR, errno, path); | |
813 | return; | |
814 | } | |
815 | } | |
816 | *str++ = '/'; | |
817 | str = CALL_UTIL (strchr)(str, '/'); | |
818 | } | |
819 | ||
820 | int fd = CALL_UTIL (open)(path, O_WRONLY | O_CREAT | O_TRUNC, fmode); | |
821 | if (fd < 0) | |
822 | { | |
823 | collector_interface->writeLog ("<event kind=\"%s\" id=\"%d\" ec=\"%d\">%s</event>\n", | |
824 | SP_JCMD_CERROR, COL_ERROR_OVWOPEN, errno, path); | |
825 | return; | |
826 | } | |
827 | rwrite (fd, class_data, class_data_len); | |
828 | CALL_UTIL (close)(fd); | |
829 | } | |
830 | ||
831 | static void | |
832 | jvmti_ClassFileLoadHook (jvmtiEnv *jvmti_env, JNIEnv* jni_env, jclass class_being_redefined, | |
833 | jobject loader, const char* name, jobject protection_domain, jint class_data_len, | |
834 | const unsigned char* class_data, jint* new_class_data_len, unsigned char** new_class_data) | |
835 | { | |
836 | jclass loaderlass; | |
837 | int err; | |
838 | jvmtiPhase phase_ptr; | |
839 | char *cname = NULL; | |
840 | (*jvmti_env)->GetPhase (jvmti_env, &phase_ptr); | |
841 | ||
842 | /* skip non live phases */ | |
843 | if (phase_ptr != JVMTI_PHASE_LIVE) | |
844 | return; | |
845 | ||
846 | /* skip system class loaders */ | |
847 | if (!loader) | |
848 | return; | |
849 | loaderlass = (*jni_env)->GetObjectClass (jni_env, loader); | |
850 | err = (*jvmti_env)->GetClassSignature (jvmti_env, loaderlass, &cname, NULL); | |
851 | if (err != JVMTI_ERROR_NONE || !cname || *cname == (char) 0) | |
852 | return; | |
853 | ||
854 | /* skip classes loaded with AppClassLoader (java.class.path) */ | |
855 | if (__collector_strcmp (cname, "Lsun/misc/Launcher$AppClassLoader;") == 0) | |
856 | return; | |
857 | addToDynamicArchive (name, class_data, (int) class_data_len); | |
858 | } | |
859 | ||
860 | #define NO_CLASS_NAME "<noname>" | |
861 | #define NO_SOURCE_FILE "<Unknown>" | |
862 | ||
863 | static void | |
864 | record_jclass (uint64_t class_id, hrtime_t hrt, const char *cname, const char *sname) | |
865 | { | |
866 | size_t clen = ARCH_STRLEN (cname); | |
867 | size_t slen = ARCH_STRLEN (sname); | |
868 | size_t sz = sizeof (ARCH_jclass) + clen + slen; | |
869 | ARCH_jclass *jcls = (ARCH_jclass*) alloca (sz); | |
870 | jcls->comm.tsize = sz; | |
871 | jcls->comm.type = ARCH_JCLASS; | |
872 | jcls->class_id = class_id; | |
873 | jcls->tstamp = hrt; | |
874 | char *str = (char*) (jcls + 1); | |
875 | size_t i = CALL_UTIL (strlcpy)(str, cname, clen); | |
876 | str += i; | |
877 | while (i++ < clen) | |
878 | *str++ = (char) 0; /* pad with 0's */ | |
879 | i = CALL_UTIL (strlcpy)(str, sname, slen); | |
880 | str += i; | |
881 | while (i++ < slen) | |
882 | *str++ = (char) 0; /* pad with 0's */ | |
883 | collector_interface->writeDataPacket (jprof_hndl, (CM_Packet*) jcls); | |
884 | } | |
885 | ||
886 | static void | |
887 | record_jmethod (uint64_t class_id, uint64_t method_id, | |
888 | const char *mname, const char *msign) | |
889 | { | |
890 | size_t mnlen = mname ? ARCH_STRLEN (mname) : 0; | |
891 | size_t mslen = msign ? ARCH_STRLEN (msign) : 0; | |
892 | size_t sz = sizeof (ARCH_jmethod) + mnlen + mslen; | |
893 | ARCH_jmethod *jmth = (ARCH_jmethod*) alloca (sz); | |
894 | if (jmth == NULL) | |
895 | { | |
896 | TprintfT (DBG_LT1, "jprofile: record_jmethod ERROR: failed to alloca(%ld)\n", (long) sz); | |
897 | return; | |
898 | } | |
899 | jmth->comm.tsize = sz; | |
900 | jmth->comm.type = ARCH_JMETHOD; | |
901 | jmth->class_id = class_id; | |
902 | jmth->method_id = method_id; | |
903 | char *str = (char*) (jmth + 1); | |
904 | if (mname) | |
905 | { | |
906 | size_t i = CALL_UTIL (strlcpy)(str, mname, mnlen); | |
907 | str += i; | |
908 | while (i++ < mnlen) | |
909 | *str++ = (char) 0; /* pad with 0's */ | |
910 | } | |
911 | if (msign) | |
912 | { | |
913 | size_t i = CALL_UTIL (strlcpy)(str, msign, mslen); | |
914 | str += i; | |
915 | while (i++ < mslen) | |
916 | *str++ = (char) 0; /* pad with 0's */ | |
917 | } | |
918 | collector_interface->writeDataPacket (jprof_hndl, (CM_Packet*) jmth); | |
919 | } | |
920 | ||
921 | static void | |
922 | jvmti_ClassPrepare (jvmtiEnv *jvmti_env, JNIEnv* jni_env, | |
923 | jthread thread, jclass klass) | |
924 | { | |
925 | hrtime_t hrt; | |
926 | jint mnum; | |
927 | jmethodID *mptr; | |
928 | char *cname, *sname; | |
929 | char *str1 = NULL; | |
930 | int err = (*jvmti_env)->GetClassSignature (jvmti_env, klass, &str1, NULL); | |
931 | if (err != JVMTI_ERROR_NONE || str1 == NULL || *str1 == (char) 0) | |
932 | cname = NO_CLASS_NAME; | |
933 | else | |
934 | cname = str1; | |
935 | if (*cname != 'L') | |
936 | { | |
937 | DprintfT (SP_DUMP_JAVA | SP_DUMP_TIME, "jvmti_ClassPrepare: GetClassSignature failed. err=%d cname=%s\n", err, cname); | |
938 | return; | |
939 | } | |
940 | char *str2 = NULL; | |
941 | err = (*jvmti_env)->GetSourceFileName (jvmti_env, klass, &str2); | |
942 | if (err != JVMTI_ERROR_NONE || str2 == NULL || *str2 == (char) 0) | |
943 | sname = NO_SOURCE_FILE; | |
944 | else | |
945 | sname = str2; | |
946 | DprintfT (SP_DUMP_JAVA | SP_DUMP_TIME, "jvmti_ClassPrepare: cname=%s sname=%s\n", STR (cname), STR (sname)); | |
947 | ||
948 | /* Lock the whole file */ | |
949 | __collector_mutex_lock (&jclasses_lock); | |
950 | hrt = gethrtime (); | |
951 | record_jclass ((unsigned long) klass, hrt, cname, sname); | |
952 | (*jvmti_env)->Deallocate (jvmti_env, (unsigned char *) str1); | |
953 | (*jvmti_env)->Deallocate (jvmti_env, (unsigned char *) str2); | |
954 | err = (*jvmti_env)->GetClassMethods (jvmti_env, klass, &mnum, &mptr); | |
955 | if (err == JVMTI_ERROR_NONE) | |
956 | { | |
957 | for (int i = 0; i < mnum; i++) | |
958 | { | |
959 | char *mname, *msign; | |
960 | err = (*jvmti_env)->GetMethodName (jvmti_env, mptr[i], &mname, &msign, NULL); | |
961 | if (err != JVMTI_ERROR_NONE) | |
962 | continue; | |
963 | record_jmethod ((unsigned long) klass, (unsigned long) mptr[i], mname, msign); | |
964 | // DeleteLocalRef( mptr[i] ); | |
965 | } | |
966 | (*jvmti_env)->Deallocate (jvmti_env, (unsigned char*) mptr); | |
967 | } | |
968 | /* Unlock the file */ | |
969 | __collector_mutex_unlock (&jclasses_lock); | |
970 | } | |
971 | ||
972 | /* | |
973 | * The CLASS_LOAD event is enabled to enable AsyncGetCallTrace | |
974 | */ | |
975 | static void | |
976 | jvmti_ClassLoad (jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread, jclass klass) | |
977 | { | |
978 | char *cname; | |
979 | char *str1 = NULL; | |
980 | int err = (*jvmti_env)->GetClassSignature (jvmti_env, klass, &str1, NULL); | |
981 | if (err != JVMTI_ERROR_NONE || str1 == NULL || *str1 == (char) 0) | |
982 | cname = NO_CLASS_NAME; | |
983 | else | |
984 | cname = str1; | |
985 | jstring str = NULL; | |
986 | const char* resourceName; | |
987 | jobject classLoader = NULL; | |
988 | err = (*jvmti)->GetClassLoader (jvmti, klass, &classLoader); | |
989 | DprintfT (SP_DUMP_JAVA | SP_DUMP_TIME, "jprofile: jvmti_ClassLoad err=%d cname=%s\n", err, STR (cname)); | |
990 | if (err == 0) | |
991 | { | |
992 | if (classLoader == NULL) | |
993 | { | |
994 | // bootstrap class loader | |
995 | resourceName = ""; | |
996 | } | |
997 | else | |
998 | { | |
999 | char* name = (char *) alloca ((CALL_UTIL (strlen)(str1) + 32) * sizeof (char)); | |
1000 | CALL_UTIL (strlcpy)(name, str1 + 1, CALL_UTIL (strlen)(str1)); | |
1001 | name[CALL_UTIL (strlen)(name) - 1] = '\0'; // remove the last ';' | |
1002 | char* p; | |
1003 | for (p = name; *p != '\0'; p++) | |
1004 | if (*p == '.') | |
1005 | *p = '/'; | |
1006 | CALL_UTIL (strlcat)(name, ".class", CALL_UTIL (strlen)(name) + CALL_UTIL (strlen)(".class") + 1); | |
1007 | if (getResource == NULL || toExternalForm == NULL) | |
1008 | { | |
1009 | resourceName = ""; | |
1010 | DprintfT (SP_DUMP_JAVA | SP_DUMP_TIME, "jvmti_ClassLoad: class %s failed to get path with method missing\n", STR (cname)); | |
1011 | } | |
1012 | else | |
1013 | { | |
1014 | jobject url = (*jni_env)->CallObjectMethod (jni_env, classLoader, getResource, (*jni_env)->NewStringUTF (jni_env, name)); | |
1015 | if (url == NULL) | |
1016 | { | |
1017 | resourceName = ""; | |
1018 | DprintfT (SP_DUMP_JAVA | SP_DUMP_TIME, "jvmti_ClassLoad: class %s failed to get path\n", STR (cname)); | |
1019 | } | |
1020 | else | |
1021 | { | |
1022 | str = (jstring) (*jni_env)->CallObjectMethod (jni_env, url, toExternalForm); | |
1023 | resourceName = (*jni_env)->GetStringUTFChars (jni_env, str, NULL); | |
1024 | DprintfT (SP_DUMP_JAVA | SP_DUMP_TIME, "jvmti_ClassLoad: ARCH_JCLASS_LOCATION(Ox%x) class_id=0x%lx className='%s' fileName '%s'\n", | |
1025 | (int) ARCH_JCLASS_LOCATION, (unsigned long) klass, STR (cname), STR (resourceName)); | |
1026 | size_t clen = ARCH_STRLEN (cname); | |
1027 | size_t slen = ARCH_STRLEN (resourceName); | |
1028 | size_t sz = sizeof (ARCH_jclass) + clen + slen; | |
1029 | ARCH_jclass_location *jcls = (ARCH_jclass_location*) alloca (sz); | |
1030 | jcls->comm.tsize = sz; | |
1031 | jcls->comm.type = ARCH_JCLASS_LOCATION; | |
1032 | jcls->class_id = (unsigned long) klass; | |
1033 | char *str = (char*) (jcls + 1); | |
1034 | size_t i = CALL_UTIL (strlcpy)(str, cname, clen); | |
1035 | str += i; | |
1036 | while (i++ < clen) | |
1037 | { | |
1038 | *str++ = (char) 0; /* pad with 0's */ | |
1039 | } | |
1040 | i = CALL_UTIL (strlcpy)(str, resourceName, slen); | |
1041 | str += i; | |
1042 | while (i++ < slen) | |
1043 | { | |
1044 | *str++ = (char) 0; /* pad with 0's */ | |
1045 | } | |
1046 | /* Lock the whole file */ | |
1047 | __collector_mutex_lock (&jclasses_lock); | |
1048 | collector_interface->writeDataPacket (jprof_hndl, (CM_Packet*) jcls); | |
1049 | /* Unlock the file */ | |
1050 | __collector_mutex_unlock (&jclasses_lock); | |
1051 | } | |
1052 | } | |
1053 | } | |
1054 | } | |
1055 | } | |
1056 | ||
1057 | static void | |
1058 | jvmti_MonitorEnter (jvmtiEnv *jvmti_env, JNIEnv* jni_env, | |
1059 | jthread thread, jobject object) | |
1060 | { | |
1061 | if (collector_jsync_begin) | |
1062 | collector_jsync_begin (); | |
1063 | TSD_Entry *tsd = collector_interface->getKey (tsd_key); | |
1064 | if (tsd == NULL) | |
1065 | return; | |
1066 | tsd->tstamp = gethrtime (); | |
1067 | } | |
1068 | ||
1069 | static void | |
1070 | jvmti_MonitorEntered (jvmtiEnv *jvmti_env, JNIEnv* jni_env, | |
1071 | jthread thread, jobject object) | |
1072 | { | |
1073 | TSD_Entry *tsd = collector_interface->getKey (tsd_key); | |
1074 | if (tsd == NULL) | |
1075 | return; | |
1076 | if (collector_jsync_end) | |
1077 | collector_jsync_end (tsd->tstamp, object); | |
1078 | } | |
1079 | ||
1080 | static void | |
1081 | jvmti_GarbageCollectionStart (jvmtiEnv *jvmti_env) | |
1082 | { | |
1083 | hrtime_t hrt = gethrtime (); | |
1084 | collector_interface->writeLog ("<event kind=\"%s\" tstamp=\"%u.%09u\"/>\n", | |
1085 | SP_JCMD_GCSTART, | |
1086 | (unsigned) (hrt / NANOSEC), (unsigned) (hrt % NANOSEC) | |
1087 | ); | |
1088 | TprintfT (DBG_LT1, "jprofile: jvmti_GarbageCollectionStart.\n"); | |
1089 | } | |
1090 | ||
1091 | static void | |
1092 | jvmti_GarbageCollectionFinish (jvmtiEnv *jvmti_env) | |
1093 | { | |
1094 | hrtime_t hrt = gethrtime (); | |
1095 | collector_interface->writeLog ("<event kind=\"%s\" tstamp=\"%u.%09u\"/>\n", | |
1096 | SP_JCMD_GCEND, | |
1097 | (unsigned) (hrt / NANOSEC), (unsigned) (hrt % NANOSEC) | |
1098 | ); | |
1099 | TprintfT (DBG_LT1, "jprofile: jvmti_GarbageCollectionFinish.\n"); | |
1100 | } | |
1101 | ||
1102 | #if 0 | |
1103 | static void | |
1104 | jvmti_MonitorWait (jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread, | |
1105 | jobject object, jlong timed_out) | |
1106 | { | |
1107 | if (collector_sync_begin) | |
1108 | collector_sync_begin (); | |
1109 | TSD_Entry *tsd = collector_interface->getKey (tsd_key); | |
1110 | if (tsd == NULL) | |
1111 | return; | |
1112 | tsd->tstamp = gethrtime (); | |
1113 | } | |
1114 | ||
1115 | static void | |
1116 | jvmti_MonitorWaited (jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread, | |
1117 | jobject object, jboolean timed_out) | |
1118 | { | |
1119 | TSD_Entry *tsd = collector_interface->getKey (tsd_key); | |
1120 | if (tsd == NULL) | |
1121 | return; | |
1122 | if (collector_sync_end) | |
1123 | collector_sync_end (tsd->tstamp, object); | |
1124 | } | |
1125 | #endif | |
1126 | ||
1127 | static void | |
1128 | jprof_find_asyncgetcalltrace () | |
1129 | { | |
1130 | void *jvmhandle; | |
1131 | if (__collector_VM_ReadByteInstruction == NULL) | |
1132 | __collector_VM_ReadByteInstruction = (int(*)()) dlsym (RTLD_DEFAULT, "Async_VM_ReadByteInstruction"); | |
1133 | ||
1134 | /* look for stack unwind function using default path */ | |
1135 | AsyncGetCallTrace = (void (*)(JVMPI_CallTrace*, jint, ucontext_t*)) | |
1136 | dlsym (RTLD_DEFAULT, "AsyncGetCallTrace"); | |
1137 | if (AsyncGetCallTrace != NULL) | |
1138 | { | |
1139 | __collector_java_asyncgetcalltrace_loaded = 1; | |
1140 | TprintfT (DBG_LT1, "jprofile: AsyncGetCallTrace found with RTLD_DEFAULT\n"); | |
1141 | } | |
1142 | else | |
1143 | { | |
1144 | /* not found there, find libjvm.so, and ask again */ | |
1145 | jvmhandle = dlopen ("libjvm.so", RTLD_LAZY | RTLD_NOLOAD); | |
1146 | if (jvmhandle != NULL) | |
1147 | { | |
1148 | AsyncGetCallTrace = (void (*)(JVMPI_CallTrace*, jint, ucontext_t*)) | |
1149 | dlsym (jvmhandle, "AsyncGetCallTrace"); | |
1150 | } | |
1151 | } | |
1152 | ||
1153 | if (AsyncGetCallTrace == NULL) | |
1154 | { | |
1155 | /* we could not find it -- write collector error */ | |
1156 | TprintfT (0, "jprofile: ERROR -- AsyncGetCallTrace not found in address space\n"); | |
1157 | char *err = dlerror (); | |
1158 | collector_interface->writeLog ("<event kind=\"%s\" id=\"%d\">%s</event>\n", | |
1159 | SP_JCMD_CERROR, COL_ERROR_JVMNOJSTACK, err ? err : ""); | |
1160 | __collector_java_mode = 0; | |
1161 | } | |
1162 | else | |
1163 | { | |
1164 | __collector_java_asyncgetcalltrace_loaded = 1; | |
1165 | TprintfT (DBG_LT1, "jprofile: AsyncGetCallTrace initialized in jprof_jvmpi_init_done_event\n"); | |
1166 | } | |
1167 | } | |
1168 | ||
1169 | int | |
1170 | __collector_ext_jstack_unwind (char *ptr, int sz, ucontext_t *uc) | |
1171 | { | |
1172 | if (AsyncGetCallTrace == NULL) | |
1173 | { | |
1174 | TprintfT (DBG_LT0, "jprofile: __collector_ext_jstack_unwind: AsyncGetCallTrace is NULL\n"); | |
1175 | return 0; | |
1176 | } | |
1177 | ||
1178 | TSD_Entry *tsd = collector_interface->getKey (tsd_key); | |
1179 | if (tsd == NULL) | |
1180 | { | |
1181 | TprintfT (DBG_LT3, "jprofile: __collector_ext_jstack_unwind: tsd is NULL\n"); | |
1182 | return 0; | |
1183 | } | |
1184 | if (__collector_java_attach && tsd->env == NULL && jvmti != NULL && jvm != NULL) | |
1185 | { | |
1186 | TprintfT (DBG_LT3, "jprofile: __collector_ext_jstack_unwind: tsd->env is NULL under attach\n"); | |
1187 | JNIEnv* jni_env = NULL; | |
1188 | (*jvm)->GetEnv (jvm, (void **) &jni_env, JNI_VERSION_1_2); | |
1189 | tsd->env = jni_env; | |
1190 | } | |
1191 | if (tsd->env == NULL) | |
1192 | { | |
1193 | TprintfT (DBG_LT3, "jprofile: __collector_ext_jstack_unwind: tsd->env is NULL\n"); | |
1194 | return 0; | |
1195 | } | |
1196 | ||
1197 | /* skip the Java stack whenever another signal handler is present */ | |
1198 | if (uc->uc_link) | |
1199 | { | |
1200 | TprintfT (DBG_LT3, "jprofile: __collector_ext_jstack_unwind: uc->uc_link is non-NULL\n"); | |
1201 | return 0; | |
1202 | } | |
1203 | /* we don't expect Java frames in signal handlers, so | |
1204 | * unroll the list of saved contexts to the topmost one | |
1205 | */ | |
1206 | while (uc->uc_link) | |
1207 | uc = uc->uc_link; | |
1208 | Java_info *jinfo = (Java_info*) ptr; | |
1209 | jinfo->kind = JAVA_INFO; | |
1210 | jinfo->hsize = sizeof (Java_info); | |
1211 | ptr += sizeof (Java_info); | |
1212 | sz -= sizeof (Java_info); | |
1213 | ||
1214 | JVMPI_CallTrace jtrace; | |
1215 | jtrace.env_id = tsd->env; | |
1216 | jtrace.frames = (JVMPI_CallFrame*) ptr; | |
1217 | ||
1218 | /* nframes is how many frames we have room for */ | |
1219 | jint nframes = sz / sizeof (JVMPI_CallFrame); | |
1220 | ||
1221 | #if WSIZE(64) | |
1222 | /* bug 6909545: garbage in 64-bit JAVA_INFO */ | |
1223 | CALL_UTIL (memset)(jtrace.frames, 0, nframes * sizeof (JVMPI_CallFrame)); | |
1224 | #endif | |
1225 | ||
1226 | #if ARCH(SPARC) | |
1227 | // 21328946 JDK bug 8129933 causes <no java callstack recorded> on sparc-Linux | |
1228 | // convert from ucontext_t to sigcontext | |
1229 | struct sigcontext sctx; | |
1230 | sctx.sigc_regs.tpc = uc->uc_mcontext.mc_gregs[MC_PC]; | |
1231 | __collector_memcpy (sctx.sigc_regs.u_regs, &uc->uc_mcontext.mc_gregs[3], sizeof (sctx.sigc_regs.u_regs)); | |
1232 | uc = (ucontext_t *) (&sctx); | |
1233 | #endif /* SPARC */ | |
1234 | AsyncGetCallTrace (&jtrace, nframes, uc); | |
1235 | ||
1236 | if (jtrace.num_frames == nframes) | |
1237 | { | |
1238 | JVMPI_CallFrame *last = &jtrace.frames[nframes - 1]; | |
1239 | last->method_id = (jmethodID) SP_TRUNC_STACK_MARKER; | |
1240 | last->lineno = 0; | |
1241 | } | |
1242 | ||
1243 | /* nframes is how many frames we actually got */ | |
1244 | nframes = jtrace.num_frames; | |
1245 | TprintfT (DBG_LT3, "jprofile: __collector_ext_jstack_unwind: AsyncGetCallTrace jtrace.numframes = %d\n", nframes); | |
1246 | if (nframes <= 0) | |
1247 | { | |
1248 | /* negative values are error codes */ | |
1249 | TprintfT (0, "jprofile: __collector_ext_jstack_unwind: AsyncGetCallTrace returned error: jtrace.numframes = %d\n", nframes); | |
1250 | nframes = 1; | |
1251 | JVMPI_CallFrame *err = (JVMPI_CallFrame*) ptr; | |
1252 | err->lineno = jtrace.num_frames; // bci = error code | |
1253 | err->method_id = 0; // artificial method id | |
1254 | } | |
1255 | jinfo->hsize += nframes * sizeof (JVMPI_CallFrame); | |
1256 | return jinfo->hsize; | |
1257 | } | |
1258 | ||
1259 | /* | |
1260 | * Collector Java API implementation | |
1261 | */ | |
1262 | void | |
1263 | Java_com_sun_forte_st_collector_CollectorAPI__1sample(JNIEnv *jEnv, jclass jCls, jstring jName) | |
1264 | { | |
1265 | JNIEnv *jni; | |
1266 | jint res = (*jvm)->GetEnv (jvm, (void **) &jni, JNI_VERSION_1_2); | |
1267 | if (res < 0) | |
1268 | return; | |
1269 | const char *name = jName ? (*jni)->GetStringUTFChars (jni, jName, NULL) : NULL; | |
1270 | __collector_sample ((char*) name); | |
1271 | } | |
1272 | ||
1273 | void | |
1274 | Java_com_sun_forte_st_collector_CollectorAPI__1pause(JNIEnv *jEnv, jclass jCls) | |
1275 | { | |
1276 | __collector_pause_m ("JAPI"); | |
1277 | } | |
1278 | ||
1279 | void | |
1280 | Java_com_sun_forte_st_collector_CollectorAPI__1resume(JNIEnv *jEnv, jclass jCls) | |
1281 | { | |
1282 | __collector_resume (); | |
1283 | } | |
1284 | ||
1285 | void | |
1286 | Java_com_sun_forte_st_collector_CollectorAPI__1terminate(JNIEnv *jEnv, jclass jCls) | |
1287 | { | |
1288 | __collector_terminate_expt (); | |
1289 | } | |
1290 | #endif /* GPROFNG_JAVA_PROFILING */ | |
1291 | ||
1292 | static void init_module () __attribute__ ((constructor)); | |
1293 | static void | |
1294 | init_module () | |
1295 | { | |
1296 | #if defined(GPROFNG_JAVA_PROFILING) | |
1297 | __collector_dlsym_guard = 1; | |
1298 | RegModuleFunc reg_module = (RegModuleFunc) dlsym (RTLD_DEFAULT, "__collector_register_module"); | |
1299 | __collector_dlsym_guard = 0; | |
1300 | if (reg_module) | |
1301 | { | |
1302 | jprof_hndl = reg_module (&module_interface); | |
1303 | TprintfT (0, "jprofile: init_module.\n"); | |
1304 | } | |
1305 | #endif /* GPROFNG_JAVA_PROFILING */ | |
1306 | } | |
1307 | ||
1308 | int __collector_java_mode = 0; | |
1309 | int __collector_java_asyncgetcalltrace_loaded = 0; |