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 1998-2006 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_JVMTIEXPORT_H_ |
duke@435 | 26 | #define _JAVA_JVMTIEXPORT_H_ |
duke@435 | 27 | |
duke@435 | 28 | // Forward declarations |
duke@435 | 29 | |
duke@435 | 30 | class JvmtiEventControllerPrivate; |
duke@435 | 31 | class JvmtiManageCapabilities; |
duke@435 | 32 | class JvmtiEnv; |
duke@435 | 33 | class JvmtiThreadState; |
duke@435 | 34 | class AttachOperation; |
duke@435 | 35 | |
duke@435 | 36 | #ifndef JVMTI_KERNEL |
duke@435 | 37 | #define JVMTI_SUPPORT_FLAG(key) \ |
duke@435 | 38 | private: \ |
duke@435 | 39 | static bool _##key; \ |
duke@435 | 40 | public: \ |
duke@435 | 41 | inline static void set_##key(bool on) { _##key = (on != 0); } \ |
duke@435 | 42 | inline static bool key() { return _##key; } |
duke@435 | 43 | #else // JVMTI_KERNEL |
duke@435 | 44 | #define JVMTI_SUPPORT_FLAG(key) \ |
duke@435 | 45 | private: \ |
duke@435 | 46 | const static bool _##key = false; \ |
duke@435 | 47 | public: \ |
duke@435 | 48 | inline static void set_##key(bool on) { report_unsupported(on); } \ |
duke@435 | 49 | inline static bool key() { return _##key; } |
duke@435 | 50 | #endif // JVMTI_KERNEL |
duke@435 | 51 | |
duke@435 | 52 | |
duke@435 | 53 | // This class contains the JVMTI interface for the rest of hotspot. |
duke@435 | 54 | // |
duke@435 | 55 | class JvmtiExport : public AllStatic { |
duke@435 | 56 | private: |
duke@435 | 57 | static int _field_access_count; |
duke@435 | 58 | static int _field_modification_count; |
duke@435 | 59 | |
duke@435 | 60 | static bool _can_access_local_variables; |
duke@435 | 61 | static bool _can_examine_or_deopt_anywhere; |
duke@435 | 62 | static bool _can_hotswap_or_post_breakpoint; |
duke@435 | 63 | static bool _can_modify_any_class; |
duke@435 | 64 | static bool _can_walk_any_space; |
duke@435 | 65 | |
duke@435 | 66 | JVMTI_SUPPORT_FLAG(can_get_source_debug_extension) |
duke@435 | 67 | JVMTI_SUPPORT_FLAG(can_maintain_original_method_order) |
duke@435 | 68 | JVMTI_SUPPORT_FLAG(can_post_interpreter_events) |
duke@435 | 69 | JVMTI_SUPPORT_FLAG(can_post_exceptions) |
duke@435 | 70 | JVMTI_SUPPORT_FLAG(can_post_breakpoint) |
duke@435 | 71 | JVMTI_SUPPORT_FLAG(can_post_field_access) |
duke@435 | 72 | JVMTI_SUPPORT_FLAG(can_post_field_modification) |
duke@435 | 73 | JVMTI_SUPPORT_FLAG(can_post_method_entry) |
duke@435 | 74 | JVMTI_SUPPORT_FLAG(can_post_method_exit) |
duke@435 | 75 | JVMTI_SUPPORT_FLAG(can_pop_frame) |
duke@435 | 76 | JVMTI_SUPPORT_FLAG(can_force_early_return) |
duke@435 | 77 | |
duke@435 | 78 | friend class JvmtiEventControllerPrivate; // should only modify these flags |
duke@435 | 79 | JVMTI_SUPPORT_FLAG(should_post_single_step) |
duke@435 | 80 | JVMTI_SUPPORT_FLAG(should_post_field_access) |
duke@435 | 81 | JVMTI_SUPPORT_FLAG(should_post_field_modification) |
duke@435 | 82 | JVMTI_SUPPORT_FLAG(should_post_class_load) |
duke@435 | 83 | JVMTI_SUPPORT_FLAG(should_post_class_prepare) |
duke@435 | 84 | JVMTI_SUPPORT_FLAG(should_post_class_unload) |
duke@435 | 85 | JVMTI_SUPPORT_FLAG(should_post_native_method_bind) |
duke@435 | 86 | JVMTI_SUPPORT_FLAG(should_post_compiled_method_load) |
duke@435 | 87 | JVMTI_SUPPORT_FLAG(should_post_compiled_method_unload) |
duke@435 | 88 | JVMTI_SUPPORT_FLAG(should_post_dynamic_code_generated) |
duke@435 | 89 | JVMTI_SUPPORT_FLAG(should_post_monitor_contended_enter) |
duke@435 | 90 | JVMTI_SUPPORT_FLAG(should_post_monitor_contended_entered) |
duke@435 | 91 | JVMTI_SUPPORT_FLAG(should_post_monitor_wait) |
duke@435 | 92 | JVMTI_SUPPORT_FLAG(should_post_monitor_waited) |
duke@435 | 93 | JVMTI_SUPPORT_FLAG(should_post_data_dump) |
duke@435 | 94 | JVMTI_SUPPORT_FLAG(should_post_garbage_collection_start) |
duke@435 | 95 | JVMTI_SUPPORT_FLAG(should_post_garbage_collection_finish) |
duke@435 | 96 | |
duke@435 | 97 | // ------ the below maybe don't have to be (but are for now) |
duke@435 | 98 | // fixed conditions here ------------ |
duke@435 | 99 | // any events can be enabled |
duke@435 | 100 | JVMTI_SUPPORT_FLAG(should_post_thread_life) |
duke@435 | 101 | JVMTI_SUPPORT_FLAG(should_post_object_free) |
duke@435 | 102 | JVMTI_SUPPORT_FLAG(should_post_resource_exhausted) |
duke@435 | 103 | |
duke@435 | 104 | // we are holding objects on the heap - need to talk to GC - e.g. |
duke@435 | 105 | // breakpoint info |
duke@435 | 106 | JVMTI_SUPPORT_FLAG(should_clean_up_heap_objects) |
duke@435 | 107 | JVMTI_SUPPORT_FLAG(should_post_vm_object_alloc) |
duke@435 | 108 | |
duke@435 | 109 | // If flag cannot be implemented, give an error if on=true |
duke@435 | 110 | static void report_unsupported(bool on); |
duke@435 | 111 | |
duke@435 | 112 | // these should only be called by the friend class |
duke@435 | 113 | friend class JvmtiManageCapabilities; |
duke@435 | 114 | inline static void set_can_examine_or_deopt_anywhere(bool on) { _can_examine_or_deopt_anywhere = (on != 0); } |
duke@435 | 115 | inline static void set_can_modify_any_class(bool on) { _can_modify_any_class = (on != 0); } |
duke@435 | 116 | inline static void set_can_access_local_variables(bool on) { _can_access_local_variables = (on != 0); } |
duke@435 | 117 | inline static void set_can_hotswap_or_post_breakpoint(bool on) { _can_hotswap_or_post_breakpoint = (on != 0); } |
duke@435 | 118 | inline static void set_can_walk_any_space(bool on) { _can_walk_any_space = (on != 0); } |
duke@435 | 119 | |
duke@435 | 120 | enum { |
duke@435 | 121 | JVMTI_VERSION_MASK = 0x70000000, |
duke@435 | 122 | JVMTI_VERSION_VALUE = 0x30000000, |
duke@435 | 123 | JVMDI_VERSION_VALUE = 0x20000000 |
duke@435 | 124 | }; |
duke@435 | 125 | |
duke@435 | 126 | static void post_field_modification(JavaThread *thread, methodOop method, address location, |
duke@435 | 127 | KlassHandle field_klass, Handle object, jfieldID field, |
duke@435 | 128 | char sig_type, jvalue *value); |
duke@435 | 129 | |
duke@435 | 130 | |
duke@435 | 131 | private: |
duke@435 | 132 | // CompiledMethodUnload events are reported from the VM thread so they |
duke@435 | 133 | // are collected in lists (of jmethodID/addresses) and the events are posted later |
duke@435 | 134 | // from threads posting CompieldMethodLoad or DynamicCodeGenerated events. |
duke@435 | 135 | static bool _have_pending_compiled_method_unload_events; |
duke@435 | 136 | static GrowableArray<jmethodID>* _pending_compiled_method_unload_method_ids; |
duke@435 | 137 | static GrowableArray<const void *>* _pending_compiled_method_unload_code_begins; |
duke@435 | 138 | static JavaThread* _current_poster; |
duke@435 | 139 | |
duke@435 | 140 | // tests if there are CompiledMethodUnload events pending |
duke@435 | 141 | inline static bool have_pending_compiled_method_unload_events() { |
duke@435 | 142 | return _have_pending_compiled_method_unload_events; |
duke@435 | 143 | } |
duke@435 | 144 | |
duke@435 | 145 | // posts any pending CompiledMethodUnload events. |
duke@435 | 146 | static void post_pending_compiled_method_unload_events(); |
duke@435 | 147 | |
duke@435 | 148 | // posts a DynamicCodeGenerated event (internal/private implementation). |
duke@435 | 149 | // The public post_dynamic_code_generated* functions make use of the |
duke@435 | 150 | // internal implementation. |
duke@435 | 151 | static void post_dynamic_code_generated_internal(const char *name, const void *code_begin, const void *code_end) KERNEL_RETURN; |
duke@435 | 152 | |
duke@435 | 153 | |
duke@435 | 154 | // GenerateEvents support to allow posting of CompiledMethodLoad and |
duke@435 | 155 | // DynamicCodeGenerated events for a given environment. |
duke@435 | 156 | friend class JvmtiCodeBlobEvents; |
duke@435 | 157 | |
duke@435 | 158 | static void post_compiled_method_load(JvmtiEnv* env, const jmethodID method, const jint length, |
duke@435 | 159 | const void *code_begin, const jint map_length, |
duke@435 | 160 | const jvmtiAddrLocationMap* map) KERNEL_RETURN; |
duke@435 | 161 | static void post_dynamic_code_generated(JvmtiEnv* env, const char *name, const void *code_begin, |
duke@435 | 162 | const void *code_end) KERNEL_RETURN; |
duke@435 | 163 | |
duke@435 | 164 | // The RedefineClasses() API breaks some invariants in the "regular" |
duke@435 | 165 | // system. For example, there are sanity checks when GC'ing nmethods |
duke@435 | 166 | // that require the containing class to be unloading. However, when a |
duke@435 | 167 | // method is redefined, the old method and nmethod can become GC'able |
duke@435 | 168 | // without the containing class unloading. The state of becoming |
duke@435 | 169 | // GC'able can be asynchronous to the RedefineClasses() call since |
duke@435 | 170 | // the old method may still be running and cannot be GC'ed until |
duke@435 | 171 | // after all old invocations have finished. Additionally, a method |
duke@435 | 172 | // that has not been redefined may have an nmethod that depends on |
duke@435 | 173 | // the redefined method. The dependent nmethod will get deopted in |
duke@435 | 174 | // this case and may also be GC'able without the containing class |
duke@435 | 175 | // being unloaded. |
duke@435 | 176 | // |
duke@435 | 177 | // This flag indicates whether RedefineClasses() has ever redefined |
duke@435 | 178 | // one or more classes during the lifetime of the VM. The flag should |
duke@435 | 179 | // only be set by the friend class and can be queried by other sub |
duke@435 | 180 | // systems as needed to relax invariant checks. |
duke@435 | 181 | static bool _has_redefined_a_class; |
duke@435 | 182 | friend class VM_RedefineClasses; |
duke@435 | 183 | inline static void set_has_redefined_a_class() { |
duke@435 | 184 | _has_redefined_a_class = true; |
duke@435 | 185 | } |
duke@435 | 186 | |
duke@435 | 187 | // Flag to indicate if the compiler has recorded all dependencies. When the |
duke@435 | 188 | // can_redefine_classes capability is enabled in the OnLoad phase then the compiler |
duke@435 | 189 | // records all dependencies from startup. However if the capability is first |
duke@435 | 190 | // enabled some time later then the dependencies recorded by the compiler |
duke@435 | 191 | // are incomplete. This flag is used by RedefineClasses to know if the |
duke@435 | 192 | // dependency information is complete or not. |
duke@435 | 193 | static bool _all_dependencies_are_recorded; |
duke@435 | 194 | |
duke@435 | 195 | public: |
duke@435 | 196 | inline static bool has_redefined_a_class() { |
duke@435 | 197 | return _has_redefined_a_class; |
duke@435 | 198 | } |
duke@435 | 199 | |
duke@435 | 200 | inline static bool all_dependencies_are_recorded() { |
duke@435 | 201 | return _all_dependencies_are_recorded; |
duke@435 | 202 | } |
duke@435 | 203 | |
duke@435 | 204 | inline static void set_all_dependencies_are_recorded(bool on) { |
duke@435 | 205 | _all_dependencies_are_recorded = (on != 0); |
duke@435 | 206 | } |
duke@435 | 207 | |
duke@435 | 208 | |
duke@435 | 209 | // let JVMTI know that the JVM_OnLoad code is running |
duke@435 | 210 | static void enter_onload_phase(); |
duke@435 | 211 | |
duke@435 | 212 | // let JVMTI know that the VM isn't up yet (and JVM_OnLoad code isn't running) |
duke@435 | 213 | static void enter_primordial_phase(); |
duke@435 | 214 | |
duke@435 | 215 | // let JVMTI know that the VM isn't up yet but JNI is live |
duke@435 | 216 | static void enter_start_phase(); |
duke@435 | 217 | |
duke@435 | 218 | // let JVMTI know that the VM is fully up and running now |
duke@435 | 219 | static void enter_live_phase(); |
duke@435 | 220 | |
duke@435 | 221 | // ------ can_* conditions (below) are set at OnLoad and never changed ------------ |
duke@435 | 222 | inline static bool can_examine_or_deopt_anywhere() { return _can_examine_or_deopt_anywhere; } |
duke@435 | 223 | inline static bool can_modify_any_class() { return _can_modify_any_class; } |
duke@435 | 224 | inline static bool can_access_local_variables() { return _can_access_local_variables; } |
duke@435 | 225 | inline static bool can_hotswap_or_post_breakpoint() { return _can_hotswap_or_post_breakpoint; } |
duke@435 | 226 | inline static bool can_walk_any_space() { return _can_walk_any_space; } |
duke@435 | 227 | |
duke@435 | 228 | // field access management |
duke@435 | 229 | static address get_field_access_count_addr(); |
duke@435 | 230 | |
duke@435 | 231 | // field modification management |
duke@435 | 232 | static address get_field_modification_count_addr(); |
duke@435 | 233 | |
duke@435 | 234 | // ----------------- |
duke@435 | 235 | |
duke@435 | 236 | static bool is_jvmti_version(jint version) { return (version & JVMTI_VERSION_MASK) == JVMTI_VERSION_VALUE; } |
duke@435 | 237 | static bool is_jvmdi_version(jint version) { return (version & JVMTI_VERSION_MASK) == JVMDI_VERSION_VALUE; } |
duke@435 | 238 | static jint get_jvmti_interface(JavaVM *jvm, void **penv, jint version); |
duke@435 | 239 | |
duke@435 | 240 | // single stepping management methods |
duke@435 | 241 | static void at_single_stepping_point(JavaThread *thread, methodOop method, address location) KERNEL_RETURN; |
duke@435 | 242 | static void expose_single_stepping(JavaThread *thread) KERNEL_RETURN; |
duke@435 | 243 | static bool hide_single_stepping(JavaThread *thread) KERNEL_RETURN_(return false;); |
duke@435 | 244 | |
duke@435 | 245 | // Methods that notify the debugger that something interesting has happened in the VM. |
duke@435 | 246 | static void post_vm_start (); |
duke@435 | 247 | static void post_vm_initialized (); |
duke@435 | 248 | static void post_vm_death (); |
duke@435 | 249 | |
duke@435 | 250 | static void post_single_step (JavaThread *thread, methodOop method, address location) KERNEL_RETURN; |
duke@435 | 251 | static void post_raw_breakpoint (JavaThread *thread, methodOop method, address location) KERNEL_RETURN; |
duke@435 | 252 | |
duke@435 | 253 | static void post_exception_throw (JavaThread *thread, methodOop method, address location, oop exception) KERNEL_RETURN; |
duke@435 | 254 | static void notice_unwind_due_to_exception (JavaThread *thread, methodOop method, address location, oop exception, bool in_handler_frame) KERNEL_RETURN; |
duke@435 | 255 | |
duke@435 | 256 | static oop jni_GetField_probe (JavaThread *thread, jobject jobj, |
duke@435 | 257 | oop obj, klassOop klass, jfieldID fieldID, bool is_static) |
duke@435 | 258 | KERNEL_RETURN_(return NULL;); |
duke@435 | 259 | static oop jni_GetField_probe_nh (JavaThread *thread, jobject jobj, |
duke@435 | 260 | oop obj, klassOop klass, jfieldID fieldID, bool is_static) |
duke@435 | 261 | KERNEL_RETURN_(return NULL;); |
duke@435 | 262 | static void post_field_access_by_jni (JavaThread *thread, oop obj, |
duke@435 | 263 | klassOop klass, jfieldID fieldID, bool is_static) KERNEL_RETURN; |
duke@435 | 264 | static void post_field_access (JavaThread *thread, methodOop method, |
duke@435 | 265 | address location, KlassHandle field_klass, Handle object, jfieldID field) KERNEL_RETURN; |
duke@435 | 266 | static oop jni_SetField_probe (JavaThread *thread, jobject jobj, |
duke@435 | 267 | oop obj, klassOop klass, jfieldID fieldID, bool is_static, char sig_type, |
duke@435 | 268 | jvalue *value) KERNEL_RETURN_(return NULL;); |
duke@435 | 269 | static oop jni_SetField_probe_nh (JavaThread *thread, jobject jobj, |
duke@435 | 270 | oop obj, klassOop klass, jfieldID fieldID, bool is_static, char sig_type, |
duke@435 | 271 | jvalue *value) KERNEL_RETURN_(return NULL;); |
duke@435 | 272 | static void post_field_modification_by_jni(JavaThread *thread, oop obj, |
duke@435 | 273 | klassOop klass, jfieldID fieldID, bool is_static, char sig_type, |
duke@435 | 274 | jvalue *value); |
duke@435 | 275 | static void post_raw_field_modification(JavaThread *thread, methodOop method, |
duke@435 | 276 | address location, KlassHandle field_klass, Handle object, jfieldID field, |
duke@435 | 277 | char sig_type, jvalue *value) KERNEL_RETURN; |
duke@435 | 278 | |
duke@435 | 279 | static void post_method_entry (JavaThread *thread, methodOop method, frame current_frame) KERNEL_RETURN; |
duke@435 | 280 | static void post_method_exit (JavaThread *thread, methodOop method, frame current_frame) KERNEL_RETURN; |
duke@435 | 281 | |
duke@435 | 282 | static void post_class_load (JavaThread *thread, klassOop klass) KERNEL_RETURN; |
duke@435 | 283 | static void post_class_unload (klassOop klass) KERNEL_RETURN; |
duke@435 | 284 | static void post_class_prepare (JavaThread *thread, klassOop klass) KERNEL_RETURN; |
duke@435 | 285 | |
duke@435 | 286 | static void post_thread_start (JavaThread *thread) KERNEL_RETURN; |
duke@435 | 287 | static void post_thread_end (JavaThread *thread) KERNEL_RETURN; |
duke@435 | 288 | |
duke@435 | 289 | // Support for java.lang.instrument agent loading. |
duke@435 | 290 | static bool _should_post_class_file_load_hook; |
duke@435 | 291 | inline static void set_should_post_class_file_load_hook(bool on) { _should_post_class_file_load_hook = on; } |
duke@435 | 292 | inline static bool should_post_class_file_load_hook() { return _should_post_class_file_load_hook; } |
duke@435 | 293 | static void post_class_file_load_hook(symbolHandle h_name, Handle class_loader, |
duke@435 | 294 | Handle h_protection_domain, |
duke@435 | 295 | unsigned char **data_ptr, unsigned char **end_ptr, |
duke@435 | 296 | unsigned char **cached_data_ptr, |
duke@435 | 297 | jint *cached_length_ptr); |
duke@435 | 298 | static void post_native_method_bind(methodOop method, address* function_ptr) KERNEL_RETURN; |
duke@435 | 299 | static void post_compiled_method_load(nmethod *nm) KERNEL_RETURN; |
duke@435 | 300 | static void post_dynamic_code_generated(const char *name, const void *code_begin, const void *code_end) KERNEL_RETURN; |
duke@435 | 301 | |
duke@435 | 302 | // used at a safepoint to post a CompiledMethodUnload event |
duke@435 | 303 | static void post_compiled_method_unload_at_safepoint(jmethodID mid, const void *code_begin) KERNEL_RETURN; |
duke@435 | 304 | |
duke@435 | 305 | // similiar to post_dynamic_code_generated except that it can be used to |
duke@435 | 306 | // post a DynamicCodeGenerated event while holding locks in the VM. Any event |
duke@435 | 307 | // posted using this function is recorded by the enclosing event collector |
duke@435 | 308 | // -- JvmtiDynamicCodeEventCollector. |
duke@435 | 309 | static void post_dynamic_code_generated_while_holding_locks(const char* name, address code_begin, address code_end) KERNEL_RETURN; |
duke@435 | 310 | |
duke@435 | 311 | static void post_garbage_collection_finish() KERNEL_RETURN; |
duke@435 | 312 | static void post_garbage_collection_start() KERNEL_RETURN; |
duke@435 | 313 | static void post_data_dump() KERNEL_RETURN; |
duke@435 | 314 | static void post_monitor_contended_enter(JavaThread *thread, ObjectMonitor *obj_mntr) KERNEL_RETURN; |
duke@435 | 315 | static void post_monitor_contended_entered(JavaThread *thread, ObjectMonitor *obj_mntr) KERNEL_RETURN; |
duke@435 | 316 | static void post_monitor_wait(JavaThread *thread, oop obj, jlong timeout) KERNEL_RETURN; |
duke@435 | 317 | static void post_monitor_waited(JavaThread *thread, ObjectMonitor *obj_mntr, jboolean timed_out) KERNEL_RETURN; |
duke@435 | 318 | static void post_object_free(JvmtiEnv* env, jlong tag) KERNEL_RETURN; |
duke@435 | 319 | static void post_resource_exhausted(jint resource_exhausted_flags, const char* detail) KERNEL_RETURN; |
duke@435 | 320 | static void record_vm_internal_object_allocation(oop object) KERNEL_RETURN; |
duke@435 | 321 | // Post objects collected by vm_object_alloc_event_collector. |
duke@435 | 322 | static void post_vm_object_alloc(JavaThread *thread, oop object) KERNEL_RETURN; |
duke@435 | 323 | // Collects vm internal objects for later event posting. |
duke@435 | 324 | inline static void vm_object_alloc_event_collector(oop object) { |
duke@435 | 325 | if (should_post_vm_object_alloc()) { |
duke@435 | 326 | record_vm_internal_object_allocation(object); |
duke@435 | 327 | } |
duke@435 | 328 | } |
duke@435 | 329 | |
duke@435 | 330 | static void cleanup_thread (JavaThread* thread) KERNEL_RETURN; |
duke@435 | 331 | |
duke@435 | 332 | static void oops_do(OopClosure* f) KERNEL_RETURN; |
duke@435 | 333 | |
duke@435 | 334 | static void transition_pending_onload_raw_monitors() KERNEL_RETURN; |
duke@435 | 335 | |
duke@435 | 336 | #ifndef SERVICES_KERNEL |
duke@435 | 337 | // attach support |
duke@435 | 338 | static jint load_agent_library(AttachOperation* op, outputStream* out); |
duke@435 | 339 | #endif // SERVICES_KERNEL |
duke@435 | 340 | |
duke@435 | 341 | // SetNativeMethodPrefix support |
duke@435 | 342 | static char** get_all_native_method_prefixes(int* count_ptr); |
duke@435 | 343 | |
duke@435 | 344 | // call after CMS has completed referencing processing |
duke@435 | 345 | static void cms_ref_processing_epilogue() KERNEL_RETURN; |
duke@435 | 346 | }; |
duke@435 | 347 | |
duke@435 | 348 | // Support class used by JvmtiDynamicCodeEventCollector and others. It |
duke@435 | 349 | // describes a single code blob by name and address range. |
duke@435 | 350 | class JvmtiCodeBlobDesc : public CHeapObj { |
duke@435 | 351 | private: |
duke@435 | 352 | char _name[64]; |
duke@435 | 353 | address _code_begin; |
duke@435 | 354 | address _code_end; |
duke@435 | 355 | |
duke@435 | 356 | public: |
duke@435 | 357 | JvmtiCodeBlobDesc(const char *name, address code_begin, address code_end) { |
duke@435 | 358 | assert(name != NULL, "all code blobs must be named"); |
duke@435 | 359 | strncpy(_name, name, sizeof(_name)); |
duke@435 | 360 | _name[sizeof(_name)-1] = '\0'; |
duke@435 | 361 | _code_begin = code_begin; |
duke@435 | 362 | _code_end = code_end; |
duke@435 | 363 | } |
duke@435 | 364 | char* name() { return _name; } |
duke@435 | 365 | address code_begin() { return _code_begin; } |
duke@435 | 366 | address code_end() { return _code_end; } |
duke@435 | 367 | }; |
duke@435 | 368 | |
duke@435 | 369 | // JvmtiEventCollector is a helper class to setup thread for |
duke@435 | 370 | // event collection. |
duke@435 | 371 | class JvmtiEventCollector : public StackObj { |
duke@435 | 372 | private: |
duke@435 | 373 | JvmtiEventCollector* _prev; // Save previous one to support nested event collector. |
duke@435 | 374 | |
duke@435 | 375 | public: |
duke@435 | 376 | void setup_jvmti_thread_state(); // Set this collector in current thread. |
duke@435 | 377 | void unset_jvmti_thread_state(); // Reset previous collector in current thread. |
duke@435 | 378 | virtual bool is_dynamic_code_event() { return false; } |
duke@435 | 379 | virtual bool is_vm_object_alloc_event(){ return false; } |
duke@435 | 380 | JvmtiEventCollector *get_prev() { return _prev; } |
duke@435 | 381 | }; |
duke@435 | 382 | |
duke@435 | 383 | // A JvmtiDynamicCodeEventCollector is a helper class for the JvmtiExport |
duke@435 | 384 | // interface. It collects "dynamic code generated" events that are posted |
duke@435 | 385 | // while holding locks. When the event collector goes out of scope the |
duke@435 | 386 | // events will be posted. |
duke@435 | 387 | // |
duke@435 | 388 | // Usage :- |
duke@435 | 389 | // |
duke@435 | 390 | // { |
duke@435 | 391 | // JvmtiDynamicCodeEventCollector event_collector; |
duke@435 | 392 | // : |
duke@435 | 393 | // { MutexLocker ml(...) |
duke@435 | 394 | // : |
duke@435 | 395 | // JvmtiExport::post_dynamic_code_generated_while_holding_locks(...) |
duke@435 | 396 | // } |
duke@435 | 397 | // // event collector goes out of scope => post events to profiler. |
duke@435 | 398 | // } |
duke@435 | 399 | |
duke@435 | 400 | class JvmtiDynamicCodeEventCollector : public JvmtiEventCollector { |
duke@435 | 401 | private: |
duke@435 | 402 | GrowableArray<JvmtiCodeBlobDesc*>* _code_blobs; // collected code blob events |
duke@435 | 403 | |
duke@435 | 404 | friend class JvmtiExport; |
duke@435 | 405 | void register_stub(const char* name, address start, address end); |
duke@435 | 406 | |
duke@435 | 407 | public: |
duke@435 | 408 | JvmtiDynamicCodeEventCollector() KERNEL_RETURN; |
duke@435 | 409 | ~JvmtiDynamicCodeEventCollector() KERNEL_RETURN; |
duke@435 | 410 | bool is_dynamic_code_event() { return true; } |
duke@435 | 411 | |
duke@435 | 412 | }; |
duke@435 | 413 | |
duke@435 | 414 | // Used to record vm internally allocated object oops and post |
duke@435 | 415 | // vm object alloc event for objects visible to java world. |
duke@435 | 416 | // Constructor enables JvmtiThreadState flag and all vm allocated |
duke@435 | 417 | // objects are recorded in a growable array. When destructor is |
duke@435 | 418 | // called the vm object alloc event is posted for each objects |
duke@435 | 419 | // visible to java world. |
duke@435 | 420 | // See jvm.cpp file for its usage. |
duke@435 | 421 | // |
duke@435 | 422 | class JvmtiVMObjectAllocEventCollector : public JvmtiEventCollector { |
duke@435 | 423 | private: |
duke@435 | 424 | GrowableArray<oop>* _allocated; // field to record vm internally allocated object oop. |
duke@435 | 425 | bool _enable; // This flag is enabled in constructor and disabled |
duke@435 | 426 | // in destructor before posting event. To avoid |
duke@435 | 427 | // collection of objects allocated while running java code inside |
duke@435 | 428 | // agent post_vm_object_alloc() event handler. |
duke@435 | 429 | |
duke@435 | 430 | //GC support |
duke@435 | 431 | void oops_do(OopClosure* f); |
duke@435 | 432 | |
duke@435 | 433 | friend class JvmtiExport; |
duke@435 | 434 | // Record vm allocated object oop. |
duke@435 | 435 | inline void record_allocation(oop obj); |
duke@435 | 436 | |
duke@435 | 437 | //GC support |
duke@435 | 438 | static void oops_do_for_all_threads(OopClosure* f); |
duke@435 | 439 | |
duke@435 | 440 | public: |
duke@435 | 441 | JvmtiVMObjectAllocEventCollector() KERNEL_RETURN; |
duke@435 | 442 | ~JvmtiVMObjectAllocEventCollector() KERNEL_RETURN; |
duke@435 | 443 | bool is_vm_object_alloc_event() { return true; } |
duke@435 | 444 | |
duke@435 | 445 | bool is_enabled() { return _enable; } |
duke@435 | 446 | void set_enabled(bool on) { _enable = on; } |
duke@435 | 447 | }; |
duke@435 | 448 | |
duke@435 | 449 | |
duke@435 | 450 | |
duke@435 | 451 | // Marker class to disable the posting of VMObjectAlloc events |
duke@435 | 452 | // within its scope. |
duke@435 | 453 | // |
duke@435 | 454 | // Usage :- |
duke@435 | 455 | // |
duke@435 | 456 | // { |
duke@435 | 457 | // NoJvmtiVMObjectAllocMark njm; |
duke@435 | 458 | // : |
duke@435 | 459 | // // VMObjAlloc event will not be posted |
duke@435 | 460 | // JvmtiExport::vm_object_alloc_event_collector(obj); |
duke@435 | 461 | // : |
duke@435 | 462 | // } |
duke@435 | 463 | |
duke@435 | 464 | class NoJvmtiVMObjectAllocMark : public StackObj { |
duke@435 | 465 | private: |
duke@435 | 466 | // enclosing collector if enabled, NULL otherwise |
duke@435 | 467 | JvmtiVMObjectAllocEventCollector *_collector; |
duke@435 | 468 | |
duke@435 | 469 | bool was_enabled() { return _collector != NULL; } |
duke@435 | 470 | |
duke@435 | 471 | public: |
duke@435 | 472 | NoJvmtiVMObjectAllocMark() KERNEL_RETURN; |
duke@435 | 473 | ~NoJvmtiVMObjectAllocMark() KERNEL_RETURN; |
duke@435 | 474 | }; |
duke@435 | 475 | |
duke@435 | 476 | |
duke@435 | 477 | // Base class for reporting GC events to JVMTI. |
duke@435 | 478 | class JvmtiGCMarker : public StackObj { |
duke@435 | 479 | private: |
duke@435 | 480 | bool _full; // marks a "full" GC |
duke@435 | 481 | unsigned int _invocation_count; // GC invocation count |
duke@435 | 482 | protected: |
duke@435 | 483 | JvmtiGCMarker(bool full) KERNEL_RETURN; // protected |
duke@435 | 484 | ~JvmtiGCMarker() KERNEL_RETURN; // protected |
duke@435 | 485 | }; |
duke@435 | 486 | |
duke@435 | 487 | |
duke@435 | 488 | // Support class used to report GC events to JVMTI. The class is stack |
duke@435 | 489 | // allocated and should be placed in the doit() implementation of all |
duke@435 | 490 | // vm operations that do a stop-the-world GC for failed allocation. |
duke@435 | 491 | // |
duke@435 | 492 | // Usage :- |
duke@435 | 493 | // |
duke@435 | 494 | // void VM_GenCollectForAllocation::doit() { |
duke@435 | 495 | // JvmtiGCForAllocationMarker jgcm; |
duke@435 | 496 | // : |
duke@435 | 497 | // } |
duke@435 | 498 | // |
duke@435 | 499 | // If jvmti is not enabled the constructor and destructor is essentially |
duke@435 | 500 | // a no-op (no overhead). |
duke@435 | 501 | // |
duke@435 | 502 | class JvmtiGCForAllocationMarker : public JvmtiGCMarker { |
duke@435 | 503 | public: |
duke@435 | 504 | JvmtiGCForAllocationMarker() : JvmtiGCMarker(false) { |
duke@435 | 505 | } |
duke@435 | 506 | }; |
duke@435 | 507 | |
duke@435 | 508 | // Support class used to report GC events to JVMTI. The class is stack |
duke@435 | 509 | // allocated and should be placed in the doit() implementation of all |
duke@435 | 510 | // vm operations that do a "full" stop-the-world GC. This class differs |
duke@435 | 511 | // from JvmtiGCForAllocationMarker in that this class assumes that a |
duke@435 | 512 | // "full" GC will happen. |
duke@435 | 513 | // |
duke@435 | 514 | // Usage :- |
duke@435 | 515 | // |
duke@435 | 516 | // void VM_GenCollectFull::doit() { |
duke@435 | 517 | // JvmtiGCFullMarker jgcm; |
duke@435 | 518 | // : |
duke@435 | 519 | // } |
duke@435 | 520 | // |
duke@435 | 521 | class JvmtiGCFullMarker : public JvmtiGCMarker { |
duke@435 | 522 | public: |
duke@435 | 523 | JvmtiGCFullMarker() : JvmtiGCMarker(true) { |
duke@435 | 524 | } |
duke@435 | 525 | }; |
duke@435 | 526 | |
duke@435 | 527 | |
duke@435 | 528 | // JvmtiHideSingleStepping is a helper class for hiding |
duke@435 | 529 | // internal single step events. |
duke@435 | 530 | class JvmtiHideSingleStepping : public StackObj { |
duke@435 | 531 | private: |
duke@435 | 532 | bool _single_step_hidden; |
duke@435 | 533 | JavaThread * _thread; |
duke@435 | 534 | |
duke@435 | 535 | public: |
duke@435 | 536 | JvmtiHideSingleStepping(JavaThread * thread) { |
duke@435 | 537 | assert(thread != NULL, "sanity check"); |
duke@435 | 538 | |
duke@435 | 539 | _single_step_hidden = false; |
duke@435 | 540 | _thread = thread; |
duke@435 | 541 | if (JvmtiExport::should_post_single_step()) { |
duke@435 | 542 | _single_step_hidden = JvmtiExport::hide_single_stepping(_thread); |
duke@435 | 543 | } |
duke@435 | 544 | } |
duke@435 | 545 | |
duke@435 | 546 | ~JvmtiHideSingleStepping() { |
duke@435 | 547 | if (_single_step_hidden) { |
duke@435 | 548 | JvmtiExport::expose_single_stepping(_thread); |
duke@435 | 549 | } |
duke@435 | 550 | } |
duke@435 | 551 | }; |
duke@435 | 552 | |
duke@435 | 553 | #endif /* _JAVA_JVMTIEXPORT_H_ */ |