Fri, 10 Jul 2009 11:10:00 -0700
6857194: Add hotspot perf counters to aid class loading performance measurement
Summary: Add new jvmstat counters to measure detailed class loading time
Reviewed-by: acorn, kamg
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 2003-2006 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | #ifndef _JAVA_JVMTIENVBASE_H_ |
duke@435 | 26 | #define _JAVA_JVMTIENVBASE_H_ |
duke@435 | 27 | |
duke@435 | 28 | // |
duke@435 | 29 | // Forward Declarations |
duke@435 | 30 | // |
duke@435 | 31 | |
duke@435 | 32 | class JvmtiEnv; |
duke@435 | 33 | class JvmtiThreadState; |
duke@435 | 34 | class JvmtiRawMonitor; // for jvmtiEnv.hpp |
duke@435 | 35 | class JvmtiEventControllerPrivate; |
duke@435 | 36 | class JvmtiTagMap; |
duke@435 | 37 | |
duke@435 | 38 | |
duke@435 | 39 | |
duke@435 | 40 | // One JvmtiEnv object is created per jvmti attachment; |
duke@435 | 41 | // done via JNI GetEnv() call. Multiple attachments are |
duke@435 | 42 | // allowed in jvmti. |
duke@435 | 43 | |
duke@435 | 44 | class JvmtiEnvBase : public CHeapObj { |
duke@435 | 45 | |
duke@435 | 46 | private: |
duke@435 | 47 | |
duke@435 | 48 | static JvmtiEnvBase* _head_environment; // head of environment list |
duke@435 | 49 | |
duke@435 | 50 | static bool _globally_initialized; |
duke@435 | 51 | static jvmtiPhase _phase; |
duke@435 | 52 | static volatile int _dying_thread_env_iteration_count; |
duke@435 | 53 | |
duke@435 | 54 | public: |
duke@435 | 55 | |
duke@435 | 56 | enum { |
duke@435 | 57 | JDK15_JVMTI_VERSION = JVMTI_VERSION_1_0 + 33, /* version: 1.0.33 */ |
duke@435 | 58 | JDK16_JVMTI_VERSION = JVMTI_VERSION_1_1 + 102 /* version: 1.1.102 */ |
duke@435 | 59 | }; |
duke@435 | 60 | |
duke@435 | 61 | static jvmtiPhase get_phase() { return _phase; } |
duke@435 | 62 | static void set_phase(jvmtiPhase phase) { _phase = phase; } |
duke@435 | 63 | static bool is_vm_live() { return _phase == JVMTI_PHASE_LIVE; } |
duke@435 | 64 | |
duke@435 | 65 | static void entering_dying_thread_env_iteration() { ++_dying_thread_env_iteration_count; } |
duke@435 | 66 | static void leaving_dying_thread_env_iteration() { --_dying_thread_env_iteration_count; } |
duke@435 | 67 | static bool is_inside_dying_thread_env_iteration(){ return _dying_thread_env_iteration_count > 0; } |
duke@435 | 68 | |
duke@435 | 69 | private: |
duke@435 | 70 | |
duke@435 | 71 | enum { |
duke@435 | 72 | JVMTI_MAGIC = 0x71EE, |
duke@435 | 73 | DISPOSED_MAGIC = 0xDEFC, |
duke@435 | 74 | BAD_MAGIC = 0xDEAD |
duke@435 | 75 | }; |
duke@435 | 76 | |
duke@435 | 77 | jvmtiEnv _jvmti_external; |
duke@435 | 78 | jint _magic; |
duke@435 | 79 | JvmtiEnvBase* _next; |
duke@435 | 80 | bool _is_retransformable; |
duke@435 | 81 | const void *_env_local_storage; // per env agent allocated data. |
duke@435 | 82 | jvmtiEventCallbacks _event_callbacks; |
duke@435 | 83 | jvmtiExtEventCallbacks _ext_event_callbacks; |
duke@435 | 84 | JvmtiTagMap* _tag_map; |
duke@435 | 85 | JvmtiEnvEventEnable _env_event_enable; |
duke@435 | 86 | jvmtiCapabilities _current_capabilities; |
duke@435 | 87 | jvmtiCapabilities _prohibited_capabilities; |
duke@435 | 88 | volatile bool _class_file_load_hook_ever_enabled; |
duke@435 | 89 | static volatile bool _needs_clean_up; |
duke@435 | 90 | char** _native_method_prefixes; |
duke@435 | 91 | int _native_method_prefix_count; |
duke@435 | 92 | |
duke@435 | 93 | protected: |
duke@435 | 94 | JvmtiEnvBase(); |
duke@435 | 95 | ~JvmtiEnvBase(); |
duke@435 | 96 | void dispose(); |
duke@435 | 97 | void env_dispose(); |
duke@435 | 98 | |
duke@435 | 99 | void set_env_local_storage(const void* data) { _env_local_storage = data; } |
duke@435 | 100 | const void* get_env_local_storage() { return _env_local_storage; } |
duke@435 | 101 | |
duke@435 | 102 | void record_class_file_load_hook_enabled(); |
duke@435 | 103 | void record_first_time_class_file_load_hook_enabled(); |
duke@435 | 104 | |
duke@435 | 105 | char** get_native_method_prefixes() { return _native_method_prefixes; } |
duke@435 | 106 | int get_native_method_prefix_count() { return _native_method_prefix_count; } |
duke@435 | 107 | jvmtiError set_native_method_prefixes(jint prefix_count, char** prefixes); |
duke@435 | 108 | |
duke@435 | 109 | private: |
duke@435 | 110 | friend class JvmtiEventControllerPrivate; |
duke@435 | 111 | void initialize(); |
duke@435 | 112 | void set_event_callbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks); |
duke@435 | 113 | static void globally_initialize(); |
duke@435 | 114 | static void periodic_clean_up(); |
duke@435 | 115 | |
duke@435 | 116 | friend class JvmtiEnvIterator; |
duke@435 | 117 | JvmtiEnv* next_environment() { return (JvmtiEnv*)_next; } |
duke@435 | 118 | void set_next_environment(JvmtiEnvBase* env) { _next = env; } |
duke@435 | 119 | static JvmtiEnv* head_environment() { return (JvmtiEnv*)_head_environment; } |
duke@435 | 120 | |
duke@435 | 121 | public: |
duke@435 | 122 | |
dcubed@1046 | 123 | bool is_valid(); |
duke@435 | 124 | |
duke@435 | 125 | bool is_retransformable() { return _is_retransformable; } |
duke@435 | 126 | |
duke@435 | 127 | static ByteSize jvmti_external_offset() { |
duke@435 | 128 | return byte_offset_of(JvmtiEnvBase, _jvmti_external); |
duke@435 | 129 | }; |
duke@435 | 130 | |
duke@435 | 131 | static JvmtiEnv* JvmtiEnv_from_jvmti_env(jvmtiEnv *env) { |
duke@435 | 132 | return (JvmtiEnv*)((intptr_t)env - in_bytes(jvmti_external_offset())); |
duke@435 | 133 | }; |
duke@435 | 134 | |
duke@435 | 135 | jvmtiCapabilities *get_capabilities() { return &_current_capabilities; } |
duke@435 | 136 | |
duke@435 | 137 | jvmtiCapabilities *get_prohibited_capabilities() { return &_prohibited_capabilities; } |
duke@435 | 138 | |
duke@435 | 139 | static char** get_all_native_method_prefixes(int* count_ptr); |
duke@435 | 140 | |
duke@435 | 141 | // This test will answer true when all environments have been disposed and some have |
duke@435 | 142 | // not yet been deallocated. As a result, this test should only be used as an |
duke@435 | 143 | // optimization for the no environment case. |
duke@435 | 144 | static bool environments_might_exist() { |
duke@435 | 145 | return head_environment() != NULL; |
duke@435 | 146 | } |
duke@435 | 147 | |
duke@435 | 148 | static void check_for_periodic_clean_up(); |
duke@435 | 149 | |
duke@435 | 150 | JvmtiEnvEventEnable *env_event_enable() { |
duke@435 | 151 | return &_env_event_enable; |
duke@435 | 152 | } |
duke@435 | 153 | |
duke@435 | 154 | jvmtiError allocate(jlong size, unsigned char** mem_ptr) { |
duke@435 | 155 | if (size < 0) { |
duke@435 | 156 | return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
duke@435 | 157 | } |
duke@435 | 158 | if (size == 0) { |
duke@435 | 159 | *mem_ptr = NULL; |
duke@435 | 160 | } else { |
duke@435 | 161 | *mem_ptr = (unsigned char *)os::malloc((size_t)size); |
duke@435 | 162 | if (*mem_ptr == NULL) { |
duke@435 | 163 | return JVMTI_ERROR_OUT_OF_MEMORY; |
duke@435 | 164 | } |
duke@435 | 165 | } |
duke@435 | 166 | return JVMTI_ERROR_NONE; |
duke@435 | 167 | } |
duke@435 | 168 | |
duke@435 | 169 | jvmtiError deallocate(unsigned char* mem) { |
duke@435 | 170 | if (mem != NULL) { |
duke@435 | 171 | os::free(mem); |
duke@435 | 172 | } |
duke@435 | 173 | return JVMTI_ERROR_NONE; |
duke@435 | 174 | } |
duke@435 | 175 | |
duke@435 | 176 | |
duke@435 | 177 | // Memory functions |
duke@435 | 178 | unsigned char* jvmtiMalloc(jlong size); // don't use this - call allocate |
duke@435 | 179 | |
duke@435 | 180 | // method to create a local handle |
duke@435 | 181 | jobject jni_reference(Handle hndl) { |
duke@435 | 182 | return JNIHandles::make_local(hndl()); |
duke@435 | 183 | } |
duke@435 | 184 | |
duke@435 | 185 | // method to create a local handle. |
duke@435 | 186 | // This function allows caller to specify which |
duke@435 | 187 | // threads local handle table to use. |
duke@435 | 188 | jobject jni_reference(JavaThread *thread, Handle hndl) { |
duke@435 | 189 | return JNIHandles::make_local(thread, hndl()); |
duke@435 | 190 | } |
duke@435 | 191 | |
duke@435 | 192 | // method to destroy a local handle |
duke@435 | 193 | void destroy_jni_reference(jobject jobj) { |
duke@435 | 194 | JNIHandles::destroy_local(jobj); |
duke@435 | 195 | } |
duke@435 | 196 | |
duke@435 | 197 | // method to destroy a local handle. |
duke@435 | 198 | // This function allows caller to specify which |
duke@435 | 199 | // threads local handle table to use although currently it is |
duke@435 | 200 | // not used. |
duke@435 | 201 | void destroy_jni_reference(JavaThread *thread, jobject jobj) { |
duke@435 | 202 | destroy_jni_reference(jobj); |
duke@435 | 203 | } |
duke@435 | 204 | |
duke@435 | 205 | jvmtiEnv* jvmti_external() { return &_jvmti_external; }; |
duke@435 | 206 | |
duke@435 | 207 | // Event Dispatch |
duke@435 | 208 | |
duke@435 | 209 | bool has_callback(jvmtiEvent event_type) { |
duke@435 | 210 | assert(event_type >= JVMTI_MIN_EVENT_TYPE_VAL && |
duke@435 | 211 | event_type <= JVMTI_MAX_EVENT_TYPE_VAL, "checking"); |
duke@435 | 212 | return ((void**)&_event_callbacks)[event_type-JVMTI_MIN_EVENT_TYPE_VAL] != NULL; |
duke@435 | 213 | } |
duke@435 | 214 | |
duke@435 | 215 | jvmtiEventCallbacks* callbacks() { |
duke@435 | 216 | return &_event_callbacks; |
duke@435 | 217 | } |
duke@435 | 218 | |
duke@435 | 219 | jvmtiExtEventCallbacks* ext_callbacks() { |
duke@435 | 220 | return &_ext_event_callbacks; |
duke@435 | 221 | } |
duke@435 | 222 | |
duke@435 | 223 | void set_tag_map(JvmtiTagMap* tag_map) { |
duke@435 | 224 | _tag_map = tag_map; |
duke@435 | 225 | } |
duke@435 | 226 | |
duke@435 | 227 | JvmtiTagMap* tag_map() { |
duke@435 | 228 | return _tag_map; |
duke@435 | 229 | } |
duke@435 | 230 | |
duke@435 | 231 | |
duke@435 | 232 | // return true if event is enabled globally or for any thread |
duke@435 | 233 | // True only if there is a callback for it. |
duke@435 | 234 | bool is_enabled(jvmtiEvent event_type) { |
duke@435 | 235 | return _env_event_enable.is_enabled(event_type); |
duke@435 | 236 | } |
duke@435 | 237 | |
duke@435 | 238 | // Random Utilities |
duke@435 | 239 | |
duke@435 | 240 | protected: |
duke@435 | 241 | // helper methods for creating arrays of global JNI Handles from local Handles |
duke@435 | 242 | // allocated into environment specific storage |
duke@435 | 243 | jobject * new_jobjectArray(int length, Handle *handles); |
duke@435 | 244 | jthread * new_jthreadArray(int length, Handle *handles); |
duke@435 | 245 | jthreadGroup * new_jthreadGroupArray(int length, Handle *handles); |
duke@435 | 246 | |
duke@435 | 247 | // convert from JNIHandle to JavaThread * |
duke@435 | 248 | JavaThread * get_JavaThread(jthread jni_thread); |
duke@435 | 249 | |
duke@435 | 250 | // convert to a jni jclass from a non-null klassOop |
duke@435 | 251 | jclass get_jni_class_non_null(klassOop k); |
duke@435 | 252 | |
duke@435 | 253 | void update_klass_field_access_flag(fieldDescriptor *fd); |
duke@435 | 254 | |
duke@435 | 255 | jint count_locked_objects(JavaThread *java_thread, Handle hobj); |
duke@435 | 256 | jvmtiError get_locked_objects_in_frame(JavaThread *calling_thread, |
duke@435 | 257 | JavaThread* java_thread, |
duke@435 | 258 | javaVFrame *jvf, |
duke@435 | 259 | GrowableArray<jvmtiMonitorStackDepthInfo*>* owned_monitors_list, |
duke@435 | 260 | jint depth); |
duke@435 | 261 | vframe* vframeFor(JavaThread* java_thread, jint depth); |
duke@435 | 262 | |
duke@435 | 263 | public: |
duke@435 | 264 | // get a field descriptor for the specified class and field |
duke@435 | 265 | static bool get_field_descriptor(klassOop k, jfieldID field, fieldDescriptor* fd); |
duke@435 | 266 | // test for suspend - most (all?) of these should go away |
duke@435 | 267 | static bool is_thread_fully_suspended(JavaThread *thread, |
duke@435 | 268 | bool wait_for_suspend, |
duke@435 | 269 | uint32_t *bits); |
duke@435 | 270 | |
duke@435 | 271 | |
duke@435 | 272 | // JVMTI API helper functions which are called at safepoint or thread is suspended. |
duke@435 | 273 | jvmtiError get_frame_count(JvmtiThreadState *state, jint *count_ptr); |
duke@435 | 274 | jvmtiError get_frame_location(JavaThread* java_thread, jint depth, |
duke@435 | 275 | jmethodID* method_ptr, jlocation* location_ptr); |
duke@435 | 276 | jvmtiError get_object_monitor_usage(JavaThread *calling_thread, |
duke@435 | 277 | jobject object, jvmtiMonitorUsage* info_ptr); |
duke@435 | 278 | jvmtiError get_stack_trace(JavaThread *java_thread, |
duke@435 | 279 | jint stack_depth, jint max_count, |
duke@435 | 280 | jvmtiFrameInfo* frame_buffer, jint* count_ptr); |
duke@435 | 281 | jvmtiError get_current_contended_monitor(JavaThread *calling_thread, |
duke@435 | 282 | JavaThread *java_thread, |
duke@435 | 283 | jobject *monitor_ptr); |
duke@435 | 284 | jvmtiError get_owned_monitors(JavaThread *calling_thread, JavaThread* java_thread, |
duke@435 | 285 | GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list); |
duke@435 | 286 | jvmtiError check_top_frame(JavaThread* current_thread, JavaThread* java_thread, |
duke@435 | 287 | jvalue value, TosState tos, Handle* ret_ob_h); |
duke@435 | 288 | jvmtiError force_early_return(JavaThread* java_thread, jvalue value, TosState tos); |
duke@435 | 289 | }; |
duke@435 | 290 | |
duke@435 | 291 | // This class is the only safe means of iterating through environments. |
duke@435 | 292 | // Note that this iteratation includes invalid environments pending |
duke@435 | 293 | // deallocation -- in fact, some uses depend on this behavior. |
duke@435 | 294 | |
duke@435 | 295 | class JvmtiEnvIterator : public StackObj { |
duke@435 | 296 | private: |
duke@435 | 297 | bool _entry_was_marked; |
duke@435 | 298 | public: |
duke@435 | 299 | JvmtiEnvIterator() { |
duke@435 | 300 | if (Threads::number_of_threads() == 0) { |
duke@435 | 301 | _entry_was_marked = false; // we are single-threaded, no need |
duke@435 | 302 | } else { |
duke@435 | 303 | Thread::current()->entering_jvmti_env_iteration(); |
duke@435 | 304 | _entry_was_marked = true; |
duke@435 | 305 | } |
duke@435 | 306 | } |
duke@435 | 307 | ~JvmtiEnvIterator() { |
duke@435 | 308 | if (_entry_was_marked) { |
duke@435 | 309 | Thread::current()->leaving_jvmti_env_iteration(); |
duke@435 | 310 | } |
duke@435 | 311 | } |
duke@435 | 312 | JvmtiEnv* first() { return JvmtiEnvBase::head_environment(); } |
duke@435 | 313 | JvmtiEnv* next(JvmtiEnvBase* env) { return env->next_environment(); } |
duke@435 | 314 | }; |
duke@435 | 315 | |
duke@435 | 316 | |
duke@435 | 317 | // VM operation to get monitor information with stack depth. |
duke@435 | 318 | class VM_GetOwnedMonitorInfo : public VM_Operation { |
duke@435 | 319 | private: |
duke@435 | 320 | JvmtiEnv *_env; |
duke@435 | 321 | JavaThread* _calling_thread; |
duke@435 | 322 | JavaThread *_java_thread; |
duke@435 | 323 | jvmtiError _result; |
duke@435 | 324 | GrowableArray<jvmtiMonitorStackDepthInfo*> *_owned_monitors_list; |
duke@435 | 325 | |
duke@435 | 326 | public: |
duke@435 | 327 | VM_GetOwnedMonitorInfo(JvmtiEnv* env, JavaThread* calling_thread, |
duke@435 | 328 | JavaThread* java_thread, |
duke@435 | 329 | GrowableArray<jvmtiMonitorStackDepthInfo*>* owned_monitor_list) { |
duke@435 | 330 | _env = env; |
duke@435 | 331 | _calling_thread = calling_thread; |
duke@435 | 332 | _java_thread = java_thread; |
duke@435 | 333 | _owned_monitors_list = owned_monitor_list; |
duke@435 | 334 | _result = JVMTI_ERROR_NONE; |
duke@435 | 335 | } |
duke@435 | 336 | VMOp_Type type() const { return VMOp_GetOwnedMonitorInfo; } |
duke@435 | 337 | void doit() { |
duke@435 | 338 | ((JvmtiEnvBase *)_env)->get_owned_monitors(_calling_thread, _java_thread, |
duke@435 | 339 | _owned_monitors_list); |
duke@435 | 340 | } |
duke@435 | 341 | jvmtiError result() { return _result; } |
duke@435 | 342 | }; |
duke@435 | 343 | |
duke@435 | 344 | |
duke@435 | 345 | // VM operation to get object monitor usage. |
duke@435 | 346 | class VM_GetObjectMonitorUsage : public VM_Operation { |
duke@435 | 347 | private: |
duke@435 | 348 | JvmtiEnv *_env; |
duke@435 | 349 | jobject _object; |
duke@435 | 350 | JavaThread* _calling_thread; |
duke@435 | 351 | jvmtiMonitorUsage* _info_ptr; |
duke@435 | 352 | jvmtiError _result; |
duke@435 | 353 | |
duke@435 | 354 | public: |
duke@435 | 355 | VM_GetObjectMonitorUsage(JvmtiEnv *env, JavaThread* calling_thread, jobject object, jvmtiMonitorUsage* info_ptr) { |
duke@435 | 356 | _env = env; |
duke@435 | 357 | _object = object; |
duke@435 | 358 | _calling_thread = calling_thread; |
duke@435 | 359 | _info_ptr = info_ptr; |
duke@435 | 360 | } |
duke@435 | 361 | VMOp_Type type() const { return VMOp_GetObjectMonitorUsage; } |
duke@435 | 362 | jvmtiError result() { return _result; } |
duke@435 | 363 | void doit() { |
duke@435 | 364 | _result = ((JvmtiEnvBase*) _env)->get_object_monitor_usage(_calling_thread, _object, _info_ptr); |
duke@435 | 365 | } |
duke@435 | 366 | |
duke@435 | 367 | }; |
duke@435 | 368 | |
duke@435 | 369 | // VM operation to get current contended monitor. |
duke@435 | 370 | class VM_GetCurrentContendedMonitor : public VM_Operation { |
duke@435 | 371 | private: |
duke@435 | 372 | JvmtiEnv *_env; |
duke@435 | 373 | JavaThread *_calling_thread; |
duke@435 | 374 | JavaThread *_java_thread; |
duke@435 | 375 | jobject *_owned_monitor_ptr; |
duke@435 | 376 | jvmtiError _result; |
duke@435 | 377 | |
duke@435 | 378 | public: |
duke@435 | 379 | VM_GetCurrentContendedMonitor(JvmtiEnv *env, JavaThread *calling_thread, JavaThread *java_thread, jobject *mon_ptr) { |
duke@435 | 380 | _env = env; |
duke@435 | 381 | _calling_thread = calling_thread; |
duke@435 | 382 | _java_thread = java_thread; |
duke@435 | 383 | _owned_monitor_ptr = mon_ptr; |
duke@435 | 384 | } |
duke@435 | 385 | VMOp_Type type() const { return VMOp_GetCurrentContendedMonitor; } |
duke@435 | 386 | jvmtiError result() { return _result; } |
duke@435 | 387 | void doit() { |
duke@435 | 388 | _result = ((JvmtiEnvBase *)_env)->get_current_contended_monitor(_calling_thread,_java_thread,_owned_monitor_ptr); |
duke@435 | 389 | } |
duke@435 | 390 | }; |
duke@435 | 391 | |
duke@435 | 392 | // VM operation to get stack trace at safepoint. |
duke@435 | 393 | class VM_GetStackTrace : public VM_Operation { |
duke@435 | 394 | private: |
duke@435 | 395 | JvmtiEnv *_env; |
duke@435 | 396 | JavaThread *_java_thread; |
duke@435 | 397 | jint _start_depth; |
duke@435 | 398 | jint _max_count; |
duke@435 | 399 | jvmtiFrameInfo *_frame_buffer; |
duke@435 | 400 | jint *_count_ptr; |
duke@435 | 401 | jvmtiError _result; |
duke@435 | 402 | |
duke@435 | 403 | public: |
duke@435 | 404 | VM_GetStackTrace(JvmtiEnv *env, JavaThread *java_thread, |
duke@435 | 405 | jint start_depth, jint max_count, |
duke@435 | 406 | jvmtiFrameInfo* frame_buffer, jint* count_ptr) { |
duke@435 | 407 | _env = env; |
duke@435 | 408 | _java_thread = java_thread; |
duke@435 | 409 | _start_depth = start_depth; |
duke@435 | 410 | _max_count = max_count; |
duke@435 | 411 | _frame_buffer = frame_buffer; |
duke@435 | 412 | _count_ptr = count_ptr; |
duke@435 | 413 | } |
duke@435 | 414 | jvmtiError result() { return _result; } |
duke@435 | 415 | VMOp_Type type() const { return VMOp_GetStackTrace; } |
duke@435 | 416 | void doit() { |
duke@435 | 417 | _result = ((JvmtiEnvBase *)_env)->get_stack_trace(_java_thread, |
duke@435 | 418 | _start_depth, _max_count, |
duke@435 | 419 | _frame_buffer, _count_ptr); |
duke@435 | 420 | } |
duke@435 | 421 | }; |
duke@435 | 422 | |
duke@435 | 423 | // forward declaration |
duke@435 | 424 | struct StackInfoNode; |
duke@435 | 425 | |
duke@435 | 426 | // VM operation to get stack trace at safepoint. |
duke@435 | 427 | class VM_GetMultipleStackTraces : public VM_Operation { |
duke@435 | 428 | private: |
duke@435 | 429 | JvmtiEnv *_env; |
duke@435 | 430 | jint _max_frame_count; |
duke@435 | 431 | jvmtiStackInfo *_stack_info; |
duke@435 | 432 | jvmtiError _result; |
duke@435 | 433 | int _frame_count_total; |
duke@435 | 434 | struct StackInfoNode *_head; |
duke@435 | 435 | |
duke@435 | 436 | JvmtiEnvBase *env() { return (JvmtiEnvBase *)_env; } |
duke@435 | 437 | jint max_frame_count() { return _max_frame_count; } |
duke@435 | 438 | struct StackInfoNode *head() { return _head; } |
duke@435 | 439 | void set_head(StackInfoNode *head) { _head = head; } |
duke@435 | 440 | |
duke@435 | 441 | protected: |
duke@435 | 442 | void set_result(jvmtiError result) { _result = result; } |
duke@435 | 443 | void fill_frames(jthread jt, JavaThread *thr, oop thread_oop); |
duke@435 | 444 | void allocate_and_fill_stacks(jint thread_count); |
duke@435 | 445 | |
duke@435 | 446 | public: |
duke@435 | 447 | VM_GetMultipleStackTraces(JvmtiEnv *env, jint max_frame_count) { |
duke@435 | 448 | _env = env; |
duke@435 | 449 | _max_frame_count = max_frame_count; |
duke@435 | 450 | _frame_count_total = 0; |
duke@435 | 451 | _head = NULL; |
duke@435 | 452 | _result = JVMTI_ERROR_NONE; |
duke@435 | 453 | } |
duke@435 | 454 | VMOp_Type type() const { return VMOp_GetMultipleStackTraces; } |
duke@435 | 455 | jvmtiStackInfo *stack_info() { return _stack_info; } |
duke@435 | 456 | jvmtiError result() { return _result; } |
duke@435 | 457 | }; |
duke@435 | 458 | |
duke@435 | 459 | |
duke@435 | 460 | // VM operation to get stack trace at safepoint. |
duke@435 | 461 | class VM_GetAllStackTraces : public VM_GetMultipleStackTraces { |
duke@435 | 462 | private: |
duke@435 | 463 | JavaThread *_calling_thread; |
duke@435 | 464 | jint _final_thread_count; |
duke@435 | 465 | |
duke@435 | 466 | public: |
duke@435 | 467 | VM_GetAllStackTraces(JvmtiEnv *env, JavaThread *calling_thread, |
duke@435 | 468 | jint max_frame_count) |
duke@435 | 469 | : VM_GetMultipleStackTraces(env, max_frame_count) { |
duke@435 | 470 | _calling_thread = calling_thread; |
duke@435 | 471 | } |
duke@435 | 472 | VMOp_Type type() const { return VMOp_GetAllStackTraces; } |
duke@435 | 473 | void doit(); |
duke@435 | 474 | jint final_thread_count() { return _final_thread_count; } |
duke@435 | 475 | }; |
duke@435 | 476 | |
duke@435 | 477 | // VM operation to get stack trace at safepoint. |
duke@435 | 478 | class VM_GetThreadListStackTraces : public VM_GetMultipleStackTraces { |
duke@435 | 479 | private: |
duke@435 | 480 | jint _thread_count; |
duke@435 | 481 | const jthread* _thread_list; |
duke@435 | 482 | |
duke@435 | 483 | public: |
duke@435 | 484 | VM_GetThreadListStackTraces(JvmtiEnv *env, jint thread_count, const jthread* thread_list, jint max_frame_count) |
duke@435 | 485 | : VM_GetMultipleStackTraces(env, max_frame_count) { |
duke@435 | 486 | _thread_count = thread_count; |
duke@435 | 487 | _thread_list = thread_list; |
duke@435 | 488 | } |
duke@435 | 489 | VMOp_Type type() const { return VMOp_GetThreadListStackTraces; } |
duke@435 | 490 | void doit(); |
duke@435 | 491 | }; |
duke@435 | 492 | |
duke@435 | 493 | |
duke@435 | 494 | // VM operation to count stack frames at safepoint. |
duke@435 | 495 | class VM_GetFrameCount : public VM_Operation { |
duke@435 | 496 | private: |
duke@435 | 497 | JvmtiEnv *_env; |
duke@435 | 498 | JvmtiThreadState *_state; |
duke@435 | 499 | jint *_count_ptr; |
duke@435 | 500 | jvmtiError _result; |
duke@435 | 501 | |
duke@435 | 502 | public: |
duke@435 | 503 | VM_GetFrameCount(JvmtiEnv *env, JvmtiThreadState *state, jint *count_ptr) { |
duke@435 | 504 | _env = env; |
duke@435 | 505 | _state = state; |
duke@435 | 506 | _count_ptr = count_ptr; |
duke@435 | 507 | } |
duke@435 | 508 | VMOp_Type type() const { return VMOp_GetFrameCount; } |
duke@435 | 509 | jvmtiError result() { return _result; } |
duke@435 | 510 | void doit() { |
duke@435 | 511 | _result = ((JvmtiEnvBase*)_env)->get_frame_count(_state, _count_ptr); |
duke@435 | 512 | } |
duke@435 | 513 | }; |
duke@435 | 514 | |
duke@435 | 515 | // VM operation to frame location at safepoint. |
duke@435 | 516 | class VM_GetFrameLocation : public VM_Operation { |
duke@435 | 517 | private: |
duke@435 | 518 | JvmtiEnv *_env; |
duke@435 | 519 | JavaThread* _java_thread; |
duke@435 | 520 | jint _depth; |
duke@435 | 521 | jmethodID* _method_ptr; |
duke@435 | 522 | jlocation* _location_ptr; |
duke@435 | 523 | jvmtiError _result; |
duke@435 | 524 | |
duke@435 | 525 | public: |
duke@435 | 526 | VM_GetFrameLocation(JvmtiEnv *env, JavaThread* java_thread, jint depth, |
duke@435 | 527 | jmethodID* method_ptr, jlocation* location_ptr) { |
duke@435 | 528 | _env = env; |
duke@435 | 529 | _java_thread = java_thread; |
duke@435 | 530 | _depth = depth; |
duke@435 | 531 | _method_ptr = method_ptr; |
duke@435 | 532 | _location_ptr = location_ptr; |
duke@435 | 533 | } |
duke@435 | 534 | VMOp_Type type() const { return VMOp_GetFrameLocation; } |
duke@435 | 535 | jvmtiError result() { return _result; } |
duke@435 | 536 | void doit() { |
duke@435 | 537 | _result = ((JvmtiEnvBase*)_env)->get_frame_location(_java_thread, _depth, |
duke@435 | 538 | _method_ptr, _location_ptr); |
duke@435 | 539 | } |
duke@435 | 540 | }; |
duke@435 | 541 | |
duke@435 | 542 | |
duke@435 | 543 | // ResourceTracker |
duke@435 | 544 | // |
duke@435 | 545 | // ResourceTracker works a little like a ResourceMark. All allocates |
duke@435 | 546 | // using the resource tracker are recorded. If an allocate using the |
duke@435 | 547 | // resource tracker fails the destructor will free any resources |
duke@435 | 548 | // that were allocated using the tracker. |
duke@435 | 549 | // The motive for this class is to avoid messy error recovery code |
duke@435 | 550 | // in situations where multiple allocations are done in sequence. If |
duke@435 | 551 | // the second or subsequent allocation fails it avoids any code to |
duke@435 | 552 | // release memory allocated in the previous calls. |
duke@435 | 553 | // |
duke@435 | 554 | // Usage :- |
duke@435 | 555 | // ResourceTracker rt(env); |
duke@435 | 556 | // : |
duke@435 | 557 | // err = rt.allocate(1024, &ptr); |
duke@435 | 558 | |
duke@435 | 559 | class ResourceTracker : public StackObj { |
duke@435 | 560 | private: |
duke@435 | 561 | JvmtiEnv* _env; |
duke@435 | 562 | GrowableArray<unsigned char*> *_allocations; |
duke@435 | 563 | bool _failed; |
duke@435 | 564 | public: |
duke@435 | 565 | ResourceTracker(JvmtiEnv* env); |
duke@435 | 566 | ~ResourceTracker(); |
duke@435 | 567 | jvmtiError allocate(jlong size, unsigned char** mem_ptr); |
duke@435 | 568 | unsigned char* allocate(jlong size); |
duke@435 | 569 | char* strdup(const char* str); |
duke@435 | 570 | }; |
duke@435 | 571 | |
duke@435 | 572 | |
duke@435 | 573 | // Jvmti monitor closure to collect off stack monitors. |
duke@435 | 574 | class JvmtiMonitorClosure: public MonitorClosure { |
duke@435 | 575 | private: |
duke@435 | 576 | JavaThread *_java_thread; |
duke@435 | 577 | JavaThread *_calling_thread; |
duke@435 | 578 | GrowableArray<jvmtiMonitorStackDepthInfo*> *_owned_monitors_list; |
duke@435 | 579 | jvmtiError _error; |
duke@435 | 580 | JvmtiEnvBase *_env; |
duke@435 | 581 | |
duke@435 | 582 | public: |
duke@435 | 583 | JvmtiMonitorClosure(JavaThread* thread, JavaThread *calling_thread, |
duke@435 | 584 | GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors, |
duke@435 | 585 | JvmtiEnvBase *env) { |
duke@435 | 586 | _java_thread = thread; |
duke@435 | 587 | _calling_thread = calling_thread; |
duke@435 | 588 | _owned_monitors_list = owned_monitors; |
duke@435 | 589 | _error = JVMTI_ERROR_NONE; |
duke@435 | 590 | _env = env; |
duke@435 | 591 | } |
duke@435 | 592 | void do_monitor(ObjectMonitor* mon); |
duke@435 | 593 | jvmtiError error() { return _error;} |
duke@435 | 594 | }; |
duke@435 | 595 | |
duke@435 | 596 | #endif /* _JAVA_JVMTIENVBASE_H_ */ |