Mercurial > hg > truffle
annotate src/share/vm/prims/jvmtiEnvBase.hpp @ 14694:58cf34613a72
8036976: PPC64: implement the template interpreter
Reviewed-by: kvn, coleenp
Contributed-by: axel.siebenborn@sap.com, martin.doerr@sap.com
author | goetz |
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date | Mon, 10 Mar 2014 12:58:02 +0100 |
parents | 0d8d78c0329a |
children | 92aa6797d639 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2014, 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 | |
1972 | 25 #ifndef SHARE_VM_PRIMS_JVMTIENVBASE_HPP |
26 #define SHARE_VM_PRIMS_JVMTIENVBASE_HPP | |
27 | |
28 #include "classfile/classLoader.hpp" | |
29 #include "prims/jvmtiEnvThreadState.hpp" | |
30 #include "prims/jvmtiEventController.hpp" | |
31 #include "prims/jvmtiThreadState.hpp" | |
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32 #include "prims/jvmtiThreadState.inline.hpp" |
1972 | 33 #include "runtime/fieldDescriptor.hpp" |
34 #include "runtime/frame.hpp" | |
35 #include "runtime/handles.inline.hpp" | |
36 #include "runtime/thread.hpp" | |
37 #include "runtime/vm_operations.hpp" | |
38 #include "utilities/growableArray.hpp" | |
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39 #include "utilities/macros.hpp" |
0 | 40 |
41 // | |
42 // Forward Declarations | |
43 // | |
44 | |
45 class JvmtiEnv; | |
46 class JvmtiThreadState; | |
47 class JvmtiRawMonitor; // for jvmtiEnv.hpp | |
48 class JvmtiEventControllerPrivate; | |
49 class JvmtiTagMap; | |
50 | |
51 | |
52 | |
53 // One JvmtiEnv object is created per jvmti attachment; | |
54 // done via JNI GetEnv() call. Multiple attachments are | |
55 // allowed in jvmti. | |
56 | |
6197 | 57 class JvmtiEnvBase : public CHeapObj<mtInternal> { |
0 | 58 |
59 private: | |
60 | |
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61 #if INCLUDE_JVMTI |
0 | 62 static JvmtiEnvBase* _head_environment; // head of environment list |
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63 #endif // INCLUDE_JVMTI |
0 | 64 |
65 static bool _globally_initialized; | |
66 static jvmtiPhase _phase; | |
67 static volatile int _dying_thread_env_iteration_count; | |
68 | |
69 public: | |
70 | |
71 enum { | |
72 JDK15_JVMTI_VERSION = JVMTI_VERSION_1_0 + 33, /* version: 1.0.33 */ | |
1988 | 73 JDK16_JVMTI_VERSION = JVMTI_VERSION_1_1 + 102, /* version: 1.1.102 */ |
6919 | 74 JDK17_JVMTI_VERSION = JVMTI_VERSION_1_2 + 2 /* version: 1.2.2 */ |
0 | 75 }; |
76 | |
77 static jvmtiPhase get_phase() { return _phase; } | |
78 static void set_phase(jvmtiPhase phase) { _phase = phase; } | |
79 static bool is_vm_live() { return _phase == JVMTI_PHASE_LIVE; } | |
80 | |
81 static void entering_dying_thread_env_iteration() { ++_dying_thread_env_iteration_count; } | |
82 static void leaving_dying_thread_env_iteration() { --_dying_thread_env_iteration_count; } | |
83 static bool is_inside_dying_thread_env_iteration(){ return _dying_thread_env_iteration_count > 0; } | |
84 | |
85 private: | |
86 | |
87 enum { | |
88 JVMTI_MAGIC = 0x71EE, | |
89 DISPOSED_MAGIC = 0xDEFC, | |
90 BAD_MAGIC = 0xDEAD | |
91 }; | |
92 | |
93 jvmtiEnv _jvmti_external; | |
94 jint _magic; | |
1121 | 95 jint _version; // version value passed to JNI GetEnv() |
0 | 96 JvmtiEnvBase* _next; |
97 bool _is_retransformable; | |
98 const void *_env_local_storage; // per env agent allocated data. | |
99 jvmtiEventCallbacks _event_callbacks; | |
100 jvmtiExtEventCallbacks _ext_event_callbacks; | |
101 JvmtiTagMap* _tag_map; | |
102 JvmtiEnvEventEnable _env_event_enable; | |
103 jvmtiCapabilities _current_capabilities; | |
104 jvmtiCapabilities _prohibited_capabilities; | |
105 volatile bool _class_file_load_hook_ever_enabled; | |
106 static volatile bool _needs_clean_up; | |
107 char** _native_method_prefixes; | |
108 int _native_method_prefix_count; | |
109 | |
110 protected: | |
1121 | 111 JvmtiEnvBase(jint version); |
0 | 112 ~JvmtiEnvBase(); |
113 void dispose(); | |
114 void env_dispose(); | |
115 | |
116 void set_env_local_storage(const void* data) { _env_local_storage = data; } | |
117 const void* get_env_local_storage() { return _env_local_storage; } | |
118 | |
119 void record_class_file_load_hook_enabled(); | |
120 void record_first_time_class_file_load_hook_enabled(); | |
121 | |
122 char** get_native_method_prefixes() { return _native_method_prefixes; } | |
123 int get_native_method_prefix_count() { return _native_method_prefix_count; } | |
124 jvmtiError set_native_method_prefixes(jint prefix_count, char** prefixes); | |
125 | |
126 private: | |
127 friend class JvmtiEventControllerPrivate; | |
128 void initialize(); | |
129 void set_event_callbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks); | |
130 static void globally_initialize(); | |
131 static void periodic_clean_up(); | |
132 | |
133 friend class JvmtiEnvIterator; | |
134 JvmtiEnv* next_environment() { return (JvmtiEnv*)_next; } | |
135 void set_next_environment(JvmtiEnvBase* env) { _next = env; } | |
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136 static JvmtiEnv* head_environment() { |
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137 JVMTI_ONLY(return (JvmtiEnv*)_head_environment); |
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138 NOT_JVMTI(return NULL); |
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139 } |
0 | 140 |
141 public: | |
142 | |
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143 bool is_valid(); |
0 | 144 |
1121 | 145 bool use_version_1_0_semantics(); // agent asked for version 1.0 |
146 bool use_version_1_1_semantics(); // agent asked for version 1.1 | |
1988 | 147 bool use_version_1_2_semantics(); // agent asked for version 1.2 |
1121 | 148 |
0 | 149 bool is_retransformable() { return _is_retransformable; } |
150 | |
151 static ByteSize jvmti_external_offset() { | |
152 return byte_offset_of(JvmtiEnvBase, _jvmti_external); | |
153 }; | |
154 | |
155 static JvmtiEnv* JvmtiEnv_from_jvmti_env(jvmtiEnv *env) { | |
156 return (JvmtiEnv*)((intptr_t)env - in_bytes(jvmti_external_offset())); | |
157 }; | |
158 | |
159 jvmtiCapabilities *get_capabilities() { return &_current_capabilities; } | |
160 | |
161 jvmtiCapabilities *get_prohibited_capabilities() { return &_prohibited_capabilities; } | |
162 | |
163 static char** get_all_native_method_prefixes(int* count_ptr); | |
164 | |
165 // This test will answer true when all environments have been disposed and some have | |
166 // not yet been deallocated. As a result, this test should only be used as an | |
167 // optimization for the no environment case. | |
168 static bool environments_might_exist() { | |
169 return head_environment() != NULL; | |
170 } | |
171 | |
172 static void check_for_periodic_clean_up(); | |
173 | |
174 JvmtiEnvEventEnable *env_event_enable() { | |
175 return &_env_event_enable; | |
176 } | |
177 | |
178 jvmtiError allocate(jlong size, unsigned char** mem_ptr) { | |
179 if (size < 0) { | |
180 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
181 } | |
182 if (size == 0) { | |
183 *mem_ptr = NULL; | |
184 } else { | |
6197 | 185 *mem_ptr = (unsigned char *)os::malloc((size_t)size, mtInternal); |
0 | 186 if (*mem_ptr == NULL) { |
187 return JVMTI_ERROR_OUT_OF_MEMORY; | |
188 } | |
189 } | |
190 return JVMTI_ERROR_NONE; | |
191 } | |
192 | |
193 jvmtiError deallocate(unsigned char* mem) { | |
194 if (mem != NULL) { | |
6197 | 195 os::free(mem, mtInternal); |
0 | 196 } |
197 return JVMTI_ERROR_NONE; | |
198 } | |
199 | |
200 | |
201 // Memory functions | |
202 unsigned char* jvmtiMalloc(jlong size); // don't use this - call allocate | |
203 | |
204 // method to create a local handle | |
205 jobject jni_reference(Handle hndl) { | |
206 return JNIHandles::make_local(hndl()); | |
207 } | |
208 | |
209 // method to create a local handle. | |
210 // This function allows caller to specify which | |
211 // threads local handle table to use. | |
212 jobject jni_reference(JavaThread *thread, Handle hndl) { | |
213 return JNIHandles::make_local(thread, hndl()); | |
214 } | |
215 | |
216 // method to destroy a local handle | |
217 void destroy_jni_reference(jobject jobj) { | |
218 JNIHandles::destroy_local(jobj); | |
219 } | |
220 | |
221 // method to destroy a local handle. | |
222 // This function allows caller to specify which | |
223 // threads local handle table to use although currently it is | |
224 // not used. | |
225 void destroy_jni_reference(JavaThread *thread, jobject jobj) { | |
226 destroy_jni_reference(jobj); | |
227 } | |
228 | |
229 jvmtiEnv* jvmti_external() { return &_jvmti_external; }; | |
230 | |
231 // Event Dispatch | |
232 | |
233 bool has_callback(jvmtiEvent event_type) { | |
234 assert(event_type >= JVMTI_MIN_EVENT_TYPE_VAL && | |
235 event_type <= JVMTI_MAX_EVENT_TYPE_VAL, "checking"); | |
236 return ((void**)&_event_callbacks)[event_type-JVMTI_MIN_EVENT_TYPE_VAL] != NULL; | |
237 } | |
238 | |
239 jvmtiEventCallbacks* callbacks() { | |
240 return &_event_callbacks; | |
241 } | |
242 | |
243 jvmtiExtEventCallbacks* ext_callbacks() { | |
244 return &_ext_event_callbacks; | |
245 } | |
246 | |
247 void set_tag_map(JvmtiTagMap* tag_map) { | |
248 _tag_map = tag_map; | |
249 } | |
250 | |
251 JvmtiTagMap* tag_map() { | |
252 return _tag_map; | |
253 } | |
254 | |
255 | |
256 // return true if event is enabled globally or for any thread | |
257 // True only if there is a callback for it. | |
258 bool is_enabled(jvmtiEvent event_type) { | |
259 return _env_event_enable.is_enabled(event_type); | |
260 } | |
261 | |
262 // Random Utilities | |
263 | |
264 protected: | |
265 // helper methods for creating arrays of global JNI Handles from local Handles | |
266 // allocated into environment specific storage | |
267 jobject * new_jobjectArray(int length, Handle *handles); | |
268 jthread * new_jthreadArray(int length, Handle *handles); | |
269 jthreadGroup * new_jthreadGroupArray(int length, Handle *handles); | |
270 | |
271 // convert from JNIHandle to JavaThread * | |
272 JavaThread * get_JavaThread(jthread jni_thread); | |
273 | |
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274 // convert to a jni jclass from a non-null Klass* |
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275 jclass get_jni_class_non_null(Klass* k); |
0 | 276 |
277 jint count_locked_objects(JavaThread *java_thread, Handle hobj); | |
278 jvmtiError get_locked_objects_in_frame(JavaThread *calling_thread, | |
279 JavaThread* java_thread, | |
280 javaVFrame *jvf, | |
281 GrowableArray<jvmtiMonitorStackDepthInfo*>* owned_monitors_list, | |
282 jint depth); | |
283 vframe* vframeFor(JavaThread* java_thread, jint depth); | |
284 | |
285 public: | |
286 // get a field descriptor for the specified class and field | |
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287 static bool get_field_descriptor(Klass* k, jfieldID field, fieldDescriptor* fd); |
0 | 288 // test for suspend - most (all?) of these should go away |
289 static bool is_thread_fully_suspended(JavaThread *thread, | |
290 bool wait_for_suspend, | |
291 uint32_t *bits); | |
292 | |
293 | |
294 // JVMTI API helper functions which are called at safepoint or thread is suspended. | |
295 jvmtiError get_frame_count(JvmtiThreadState *state, jint *count_ptr); | |
296 jvmtiError get_frame_location(JavaThread* java_thread, jint depth, | |
297 jmethodID* method_ptr, jlocation* location_ptr); | |
298 jvmtiError get_object_monitor_usage(JavaThread *calling_thread, | |
299 jobject object, jvmtiMonitorUsage* info_ptr); | |
300 jvmtiError get_stack_trace(JavaThread *java_thread, | |
301 jint stack_depth, jint max_count, | |
302 jvmtiFrameInfo* frame_buffer, jint* count_ptr); | |
303 jvmtiError get_current_contended_monitor(JavaThread *calling_thread, | |
304 JavaThread *java_thread, | |
305 jobject *monitor_ptr); | |
306 jvmtiError get_owned_monitors(JavaThread *calling_thread, JavaThread* java_thread, | |
307 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list); | |
308 jvmtiError check_top_frame(JavaThread* current_thread, JavaThread* java_thread, | |
309 jvalue value, TosState tos, Handle* ret_ob_h); | |
310 jvmtiError force_early_return(JavaThread* java_thread, jvalue value, TosState tos); | |
311 }; | |
312 | |
313 // This class is the only safe means of iterating through environments. | |
314 // Note that this iteratation includes invalid environments pending | |
315 // deallocation -- in fact, some uses depend on this behavior. | |
316 | |
317 class JvmtiEnvIterator : public StackObj { | |
318 private: | |
319 bool _entry_was_marked; | |
320 public: | |
321 JvmtiEnvIterator() { | |
322 if (Threads::number_of_threads() == 0) { | |
323 _entry_was_marked = false; // we are single-threaded, no need | |
324 } else { | |
325 Thread::current()->entering_jvmti_env_iteration(); | |
326 _entry_was_marked = true; | |
327 } | |
328 } | |
329 ~JvmtiEnvIterator() { | |
330 if (_entry_was_marked) { | |
331 Thread::current()->leaving_jvmti_env_iteration(); | |
332 } | |
333 } | |
334 JvmtiEnv* first() { return JvmtiEnvBase::head_environment(); } | |
335 JvmtiEnv* next(JvmtiEnvBase* env) { return env->next_environment(); } | |
336 }; | |
337 | |
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338 // VM operation to update for pop top frame. |
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339 class VM_UpdateForPopTopFrame : public VM_Operation { |
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340 private: |
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341 JvmtiThreadState* _state; |
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342 jvmtiError _result; |
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343 |
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344 public: |
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345 VM_UpdateForPopTopFrame(JvmtiThreadState* state) { |
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346 _state = state; |
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347 _result = JVMTI_ERROR_NONE; |
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348 } |
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349 VMOp_Type type() const { return VMOp_UpdateForPopTopFrame; } |
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350 jvmtiError result() { return _result; } |
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351 void doit() { |
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352 JavaThread* jt = _state->get_thread(); |
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353 if (Threads::includes(jt) && !jt->is_exiting() && jt->threadObj() != NULL) { |
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354 _state->update_for_pop_top_frame(); |
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355 } else { |
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356 _result = JVMTI_ERROR_THREAD_NOT_ALIVE; |
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357 } |
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358 } |
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359 }; |
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360 |
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361 // VM operation to set frame pop. |
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362 class VM_SetFramePop : public VM_Operation { |
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363 private: |
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364 JvmtiEnv *_env; |
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365 JvmtiThreadState* _state; |
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366 jint _depth; |
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367 jvmtiError _result; |
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368 |
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369 public: |
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370 VM_SetFramePop(JvmtiEnv *env, JvmtiThreadState* state, jint depth) { |
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371 _env = env; |
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372 _state = state; |
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373 _depth = depth; |
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374 _result = JVMTI_ERROR_NONE; |
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375 } |
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376 // Nested operation must be allowed for the VM_EnterInterpOnlyMode that is |
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377 // called from the JvmtiEventControllerPrivate::recompute_thread_enabled. |
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378 bool allow_nested_vm_operations() const { return true; } |
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379 VMOp_Type type() const { return VMOp_SetFramePop; } |
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380 jvmtiError result() { return _result; } |
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381 void doit() { |
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382 JavaThread* jt = _state->get_thread(); |
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383 if (Threads::includes(jt) && !jt->is_exiting() && jt->threadObj() != NULL) { |
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384 int frame_number = _state->count_frames() - _depth; |
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385 _state->env_thread_state((JvmtiEnvBase*)_env)->set_frame_pop(frame_number); |
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386 } else { |
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387 _result = JVMTI_ERROR_THREAD_NOT_ALIVE; |
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388 } |
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389 } |
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390 }; |
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391 |
0 | 392 |
393 // VM operation to get monitor information with stack depth. | |
394 class VM_GetOwnedMonitorInfo : public VM_Operation { | |
395 private: | |
396 JvmtiEnv *_env; | |
397 JavaThread* _calling_thread; | |
398 JavaThread *_java_thread; | |
399 jvmtiError _result; | |
400 GrowableArray<jvmtiMonitorStackDepthInfo*> *_owned_monitors_list; | |
401 | |
402 public: | |
403 VM_GetOwnedMonitorInfo(JvmtiEnv* env, JavaThread* calling_thread, | |
404 JavaThread* java_thread, | |
405 GrowableArray<jvmtiMonitorStackDepthInfo*>* owned_monitor_list) { | |
406 _env = env; | |
407 _calling_thread = calling_thread; | |
408 _java_thread = java_thread; | |
409 _owned_monitors_list = owned_monitor_list; | |
410 _result = JVMTI_ERROR_NONE; | |
411 } | |
412 VMOp_Type type() const { return VMOp_GetOwnedMonitorInfo; } | |
413 void doit() { | |
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414 _result = JVMTI_ERROR_THREAD_NOT_ALIVE; |
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415 if (Threads::includes(_java_thread) && !_java_thread->is_exiting() |
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416 && _java_thread->threadObj() != NULL) { |
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417 _result = ((JvmtiEnvBase *)_env)->get_owned_monitors(_calling_thread, _java_thread, |
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418 _owned_monitors_list); |
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419 } |
0 | 420 } |
421 jvmtiError result() { return _result; } | |
422 }; | |
423 | |
424 | |
425 // VM operation to get object monitor usage. | |
426 class VM_GetObjectMonitorUsage : public VM_Operation { | |
427 private: | |
428 JvmtiEnv *_env; | |
429 jobject _object; | |
430 JavaThread* _calling_thread; | |
431 jvmtiMonitorUsage* _info_ptr; | |
432 jvmtiError _result; | |
433 | |
434 public: | |
435 VM_GetObjectMonitorUsage(JvmtiEnv *env, JavaThread* calling_thread, jobject object, jvmtiMonitorUsage* info_ptr) { | |
436 _env = env; | |
437 _object = object; | |
438 _calling_thread = calling_thread; | |
439 _info_ptr = info_ptr; | |
440 } | |
441 VMOp_Type type() const { return VMOp_GetObjectMonitorUsage; } | |
442 jvmtiError result() { return _result; } | |
443 void doit() { | |
444 _result = ((JvmtiEnvBase*) _env)->get_object_monitor_usage(_calling_thread, _object, _info_ptr); | |
445 } | |
446 | |
447 }; | |
448 | |
449 // VM operation to get current contended monitor. | |
450 class VM_GetCurrentContendedMonitor : public VM_Operation { | |
451 private: | |
452 JvmtiEnv *_env; | |
453 JavaThread *_calling_thread; | |
454 JavaThread *_java_thread; | |
455 jobject *_owned_monitor_ptr; | |
456 jvmtiError _result; | |
457 | |
458 public: | |
459 VM_GetCurrentContendedMonitor(JvmtiEnv *env, JavaThread *calling_thread, JavaThread *java_thread, jobject *mon_ptr) { | |
460 _env = env; | |
461 _calling_thread = calling_thread; | |
462 _java_thread = java_thread; | |
463 _owned_monitor_ptr = mon_ptr; | |
464 } | |
465 VMOp_Type type() const { return VMOp_GetCurrentContendedMonitor; } | |
466 jvmtiError result() { return _result; } | |
467 void doit() { | |
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468 _result = JVMTI_ERROR_THREAD_NOT_ALIVE; |
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469 if (Threads::includes(_java_thread) && !_java_thread->is_exiting() && |
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470 _java_thread->threadObj() != NULL) { |
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471 _result = ((JvmtiEnvBase *)_env)->get_current_contended_monitor(_calling_thread,_java_thread,_owned_monitor_ptr); |
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472 } |
0 | 473 } |
474 }; | |
475 | |
476 // VM operation to get stack trace at safepoint. | |
477 class VM_GetStackTrace : public VM_Operation { | |
478 private: | |
479 JvmtiEnv *_env; | |
480 JavaThread *_java_thread; | |
481 jint _start_depth; | |
482 jint _max_count; | |
483 jvmtiFrameInfo *_frame_buffer; | |
484 jint *_count_ptr; | |
485 jvmtiError _result; | |
486 | |
487 public: | |
488 VM_GetStackTrace(JvmtiEnv *env, JavaThread *java_thread, | |
489 jint start_depth, jint max_count, | |
490 jvmtiFrameInfo* frame_buffer, jint* count_ptr) { | |
491 _env = env; | |
492 _java_thread = java_thread; | |
493 _start_depth = start_depth; | |
494 _max_count = max_count; | |
495 _frame_buffer = frame_buffer; | |
496 _count_ptr = count_ptr; | |
497 } | |
498 jvmtiError result() { return _result; } | |
499 VMOp_Type type() const { return VMOp_GetStackTrace; } | |
500 void doit() { | |
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501 _result = JVMTI_ERROR_THREAD_NOT_ALIVE; |
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502 if (Threads::includes(_java_thread) && !_java_thread->is_exiting() |
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503 && _java_thread->threadObj() != NULL) { |
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504 _result = ((JvmtiEnvBase *)_env)->get_stack_trace(_java_thread, |
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505 _start_depth, _max_count, |
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506 _frame_buffer, _count_ptr); |
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507 } |
0 | 508 } |
509 }; | |
510 | |
511 // forward declaration | |
512 struct StackInfoNode; | |
513 | |
514 // VM operation to get stack trace at safepoint. | |
515 class VM_GetMultipleStackTraces : public VM_Operation { | |
516 private: | |
517 JvmtiEnv *_env; | |
518 jint _max_frame_count; | |
519 jvmtiStackInfo *_stack_info; | |
520 jvmtiError _result; | |
521 int _frame_count_total; | |
522 struct StackInfoNode *_head; | |
523 | |
524 JvmtiEnvBase *env() { return (JvmtiEnvBase *)_env; } | |
525 jint max_frame_count() { return _max_frame_count; } | |
526 struct StackInfoNode *head() { return _head; } | |
527 void set_head(StackInfoNode *head) { _head = head; } | |
528 | |
529 protected: | |
530 void set_result(jvmtiError result) { _result = result; } | |
531 void fill_frames(jthread jt, JavaThread *thr, oop thread_oop); | |
532 void allocate_and_fill_stacks(jint thread_count); | |
533 | |
534 public: | |
535 VM_GetMultipleStackTraces(JvmtiEnv *env, jint max_frame_count) { | |
536 _env = env; | |
537 _max_frame_count = max_frame_count; | |
538 _frame_count_total = 0; | |
539 _head = NULL; | |
540 _result = JVMTI_ERROR_NONE; | |
541 } | |
542 VMOp_Type type() const { return VMOp_GetMultipleStackTraces; } | |
543 jvmtiStackInfo *stack_info() { return _stack_info; } | |
544 jvmtiError result() { return _result; } | |
545 }; | |
546 | |
547 | |
548 // VM operation to get stack trace at safepoint. | |
549 class VM_GetAllStackTraces : public VM_GetMultipleStackTraces { | |
550 private: | |
551 JavaThread *_calling_thread; | |
552 jint _final_thread_count; | |
553 | |
554 public: | |
555 VM_GetAllStackTraces(JvmtiEnv *env, JavaThread *calling_thread, | |
556 jint max_frame_count) | |
557 : VM_GetMultipleStackTraces(env, max_frame_count) { | |
558 _calling_thread = calling_thread; | |
559 } | |
560 VMOp_Type type() const { return VMOp_GetAllStackTraces; } | |
561 void doit(); | |
562 jint final_thread_count() { return _final_thread_count; } | |
563 }; | |
564 | |
565 // VM operation to get stack trace at safepoint. | |
566 class VM_GetThreadListStackTraces : public VM_GetMultipleStackTraces { | |
567 private: | |
568 jint _thread_count; | |
569 const jthread* _thread_list; | |
570 | |
571 public: | |
572 VM_GetThreadListStackTraces(JvmtiEnv *env, jint thread_count, const jthread* thread_list, jint max_frame_count) | |
573 : VM_GetMultipleStackTraces(env, max_frame_count) { | |
574 _thread_count = thread_count; | |
575 _thread_list = thread_list; | |
576 } | |
577 VMOp_Type type() const { return VMOp_GetThreadListStackTraces; } | |
578 void doit(); | |
579 }; | |
580 | |
581 | |
582 // VM operation to count stack frames at safepoint. | |
583 class VM_GetFrameCount : public VM_Operation { | |
584 private: | |
585 JvmtiEnv *_env; | |
586 JvmtiThreadState *_state; | |
587 jint *_count_ptr; | |
588 jvmtiError _result; | |
589 | |
590 public: | |
591 VM_GetFrameCount(JvmtiEnv *env, JvmtiThreadState *state, jint *count_ptr) { | |
592 _env = env; | |
593 _state = state; | |
594 _count_ptr = count_ptr; | |
595 } | |
596 VMOp_Type type() const { return VMOp_GetFrameCount; } | |
597 jvmtiError result() { return _result; } | |
598 void doit() { | |
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599 _result = JVMTI_ERROR_THREAD_NOT_ALIVE; |
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600 JavaThread* jt = _state->get_thread(); |
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601 if (Threads::includes(jt) && !jt->is_exiting() && jt->threadObj() != NULL) { |
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602 _result = ((JvmtiEnvBase*)_env)->get_frame_count(_state, _count_ptr); |
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603 } |
0 | 604 } |
605 }; | |
606 | |
607 // VM operation to frame location at safepoint. | |
608 class VM_GetFrameLocation : public VM_Operation { | |
609 private: | |
610 JvmtiEnv *_env; | |
611 JavaThread* _java_thread; | |
612 jint _depth; | |
613 jmethodID* _method_ptr; | |
614 jlocation* _location_ptr; | |
615 jvmtiError _result; | |
616 | |
617 public: | |
618 VM_GetFrameLocation(JvmtiEnv *env, JavaThread* java_thread, jint depth, | |
619 jmethodID* method_ptr, jlocation* location_ptr) { | |
620 _env = env; | |
621 _java_thread = java_thread; | |
622 _depth = depth; | |
623 _method_ptr = method_ptr; | |
624 _location_ptr = location_ptr; | |
625 } | |
626 VMOp_Type type() const { return VMOp_GetFrameLocation; } | |
627 jvmtiError result() { return _result; } | |
628 void doit() { | |
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629 _result = JVMTI_ERROR_THREAD_NOT_ALIVE; |
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630 if (Threads::includes(_java_thread) && !_java_thread->is_exiting() && |
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631 _java_thread->threadObj() != NULL) { |
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632 _result = ((JvmtiEnvBase*)_env)->get_frame_location(_java_thread, _depth, |
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633 _method_ptr, _location_ptr); |
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634 } |
0 | 635 } |
636 }; | |
637 | |
638 | |
639 // ResourceTracker | |
640 // | |
641 // ResourceTracker works a little like a ResourceMark. All allocates | |
642 // using the resource tracker are recorded. If an allocate using the | |
643 // resource tracker fails the destructor will free any resources | |
644 // that were allocated using the tracker. | |
645 // The motive for this class is to avoid messy error recovery code | |
646 // in situations where multiple allocations are done in sequence. If | |
647 // the second or subsequent allocation fails it avoids any code to | |
648 // release memory allocated in the previous calls. | |
649 // | |
650 // Usage :- | |
651 // ResourceTracker rt(env); | |
652 // : | |
653 // err = rt.allocate(1024, &ptr); | |
654 | |
655 class ResourceTracker : public StackObj { | |
656 private: | |
657 JvmtiEnv* _env; | |
658 GrowableArray<unsigned char*> *_allocations; | |
659 bool _failed; | |
660 public: | |
661 ResourceTracker(JvmtiEnv* env); | |
662 ~ResourceTracker(); | |
663 jvmtiError allocate(jlong size, unsigned char** mem_ptr); | |
664 unsigned char* allocate(jlong size); | |
665 char* strdup(const char* str); | |
666 }; | |
667 | |
668 | |
669 // Jvmti monitor closure to collect off stack monitors. | |
670 class JvmtiMonitorClosure: public MonitorClosure { | |
671 private: | |
672 JavaThread *_java_thread; | |
673 JavaThread *_calling_thread; | |
674 GrowableArray<jvmtiMonitorStackDepthInfo*> *_owned_monitors_list; | |
675 jvmtiError _error; | |
676 JvmtiEnvBase *_env; | |
677 | |
678 public: | |
679 JvmtiMonitorClosure(JavaThread* thread, JavaThread *calling_thread, | |
680 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors, | |
681 JvmtiEnvBase *env) { | |
682 _java_thread = thread; | |
683 _calling_thread = calling_thread; | |
684 _owned_monitors_list = owned_monitors; | |
685 _error = JVMTI_ERROR_NONE; | |
686 _env = env; | |
687 } | |
688 void do_monitor(ObjectMonitor* mon); | |
689 jvmtiError error() { return _error;} | |
690 }; | |
691 | |
1972 | 692 #endif // SHARE_VM_PRIMS_JVMTIENVBASE_HPP |