Mercurial > hg > truffle
annotate src/share/vm/prims/jvmtiExport.hpp @ 17467:55fb97c4c58d hs25-b65
8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013
Summary: Copyright year updated for files modified during 2013
Reviewed-by: twisti, iveresov
| author | mikael |
|---|---|
| date | Tue, 24 Dec 2013 11:48:39 -0800 |
| parents | 825e6cb66923 |
| children | 016b6a289fc4 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_PRIMS_JVMTIEXPORT_HPP |
| 26 #define SHARE_VM_PRIMS_JVMTIEXPORT_HPP | |
| 27 | |
| 28 #include "jvmtifiles/jvmti.h" | |
| 29 #include "memory/allocation.hpp" | |
| 30 #include "memory/iterator.hpp" | |
| 31 #include "oops/oop.hpp" | |
| 32 #include "oops/oopsHierarchy.hpp" | |
| 33 #include "runtime/frame.hpp" | |
| 34 #include "runtime/handles.hpp" | |
| 35 #include "utilities/globalDefinitions.hpp" | |
| 36 #include "utilities/growableArray.hpp" | |
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37 #include "utilities/macros.hpp" |
| 0 | 38 |
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39 // Must be included after jvmti.h. |
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40 #include "code/jvmticmlr.h" |
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41 |
| 0 | 42 // Forward declarations |
| 43 | |
| 44 class JvmtiEventControllerPrivate; | |
| 45 class JvmtiManageCapabilities; | |
| 46 class JvmtiEnv; | |
| 47 class JvmtiThreadState; | |
| 48 class AttachOperation; | |
| 49 | |
| 50 #define JVMTI_SUPPORT_FLAG(key) \ | |
| 51 private: \ | |
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52 static bool _##key; \ |
| 0 | 53 public: \ |
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54 inline static void set_##key(bool on) { \ |
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55 JVMTI_ONLY(_##key = (on != 0)); \ |
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56 NOT_JVMTI(report_unsupported(on)); \ |
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57 } \ |
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58 inline static bool key() { \ |
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59 JVMTI_ONLY(return _##key); \ |
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60 NOT_JVMTI(return false); \ |
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61 } |
| 0 | 62 |
| 63 | |
| 64 // This class contains the JVMTI interface for the rest of hotspot. | |
| 65 // | |
| 66 class JvmtiExport : public AllStatic { | |
| 3939 | 67 friend class VMStructs; |
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68 friend class CompileReplay; |
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69 |
| 0 | 70 private: |
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71 |
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72 #if INCLUDE_JVMTI |
| 0 | 73 static int _field_access_count; |
| 74 static int _field_modification_count; | |
| 75 | |
| 76 static bool _can_access_local_variables; | |
| 77 static bool _can_hotswap_or_post_breakpoint; | |
| 78 static bool _can_modify_any_class; | |
| 79 static bool _can_walk_any_space; | |
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80 #endif // INCLUDE_JVMTI |
| 0 | 81 |
| 82 JVMTI_SUPPORT_FLAG(can_get_source_debug_extension) | |
| 83 JVMTI_SUPPORT_FLAG(can_maintain_original_method_order) | |
| 84 JVMTI_SUPPORT_FLAG(can_post_interpreter_events) | |
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85 JVMTI_SUPPORT_FLAG(can_post_on_exceptions) |
| 0 | 86 JVMTI_SUPPORT_FLAG(can_post_breakpoint) |
| 87 JVMTI_SUPPORT_FLAG(can_post_field_access) | |
| 88 JVMTI_SUPPORT_FLAG(can_post_field_modification) | |
| 89 JVMTI_SUPPORT_FLAG(can_post_method_entry) | |
| 90 JVMTI_SUPPORT_FLAG(can_post_method_exit) | |
| 91 JVMTI_SUPPORT_FLAG(can_pop_frame) | |
| 92 JVMTI_SUPPORT_FLAG(can_force_early_return) | |
| 93 | |
| 94 friend class JvmtiEventControllerPrivate; // should only modify these flags | |
| 95 JVMTI_SUPPORT_FLAG(should_post_single_step) | |
| 96 JVMTI_SUPPORT_FLAG(should_post_field_access) | |
| 97 JVMTI_SUPPORT_FLAG(should_post_field_modification) | |
| 98 JVMTI_SUPPORT_FLAG(should_post_class_load) | |
| 99 JVMTI_SUPPORT_FLAG(should_post_class_prepare) | |
| 100 JVMTI_SUPPORT_FLAG(should_post_class_unload) | |
| 101 JVMTI_SUPPORT_FLAG(should_post_native_method_bind) | |
| 102 JVMTI_SUPPORT_FLAG(should_post_compiled_method_load) | |
| 103 JVMTI_SUPPORT_FLAG(should_post_compiled_method_unload) | |
| 104 JVMTI_SUPPORT_FLAG(should_post_dynamic_code_generated) | |
| 105 JVMTI_SUPPORT_FLAG(should_post_monitor_contended_enter) | |
| 106 JVMTI_SUPPORT_FLAG(should_post_monitor_contended_entered) | |
| 107 JVMTI_SUPPORT_FLAG(should_post_monitor_wait) | |
| 108 JVMTI_SUPPORT_FLAG(should_post_monitor_waited) | |
| 109 JVMTI_SUPPORT_FLAG(should_post_data_dump) | |
| 110 JVMTI_SUPPORT_FLAG(should_post_garbage_collection_start) | |
| 111 JVMTI_SUPPORT_FLAG(should_post_garbage_collection_finish) | |
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112 JVMTI_SUPPORT_FLAG(should_post_on_exceptions) |
| 0 | 113 |
| 114 // ------ the below maybe don't have to be (but are for now) | |
| 115 // fixed conditions here ------------ | |
| 116 // any events can be enabled | |
| 117 JVMTI_SUPPORT_FLAG(should_post_thread_life) | |
| 118 JVMTI_SUPPORT_FLAG(should_post_object_free) | |
| 119 JVMTI_SUPPORT_FLAG(should_post_resource_exhausted) | |
| 120 | |
| 121 // we are holding objects on the heap - need to talk to GC - e.g. | |
| 122 // breakpoint info | |
| 123 JVMTI_SUPPORT_FLAG(should_clean_up_heap_objects) | |
| 124 JVMTI_SUPPORT_FLAG(should_post_vm_object_alloc) | |
| 125 | |
| 126 // If flag cannot be implemented, give an error if on=true | |
| 127 static void report_unsupported(bool on); | |
| 128 | |
| 129 // these should only be called by the friend class | |
| 130 friend class JvmtiManageCapabilities; | |
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131 inline static void set_can_modify_any_class(bool on) { |
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132 JVMTI_ONLY(_can_modify_any_class = (on != 0);) |
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133 } |
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134 inline static void set_can_access_local_variables(bool on) { |
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135 JVMTI_ONLY(_can_access_local_variables = (on != 0);) |
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136 } |
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137 inline static void set_can_hotswap_or_post_breakpoint(bool on) { |
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138 JVMTI_ONLY(_can_hotswap_or_post_breakpoint = (on != 0);) |
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139 } |
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140 inline static void set_can_walk_any_space(bool on) { |
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141 JVMTI_ONLY(_can_walk_any_space = (on != 0);) |
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142 } |
| 0 | 143 |
| 144 enum { | |
| 145 JVMTI_VERSION_MASK = 0x70000000, | |
| 146 JVMTI_VERSION_VALUE = 0x30000000, | |
| 147 JVMDI_VERSION_VALUE = 0x20000000 | |
| 148 }; | |
| 149 | |
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150 static void post_field_modification(JavaThread *thread, Method* method, address location, |
| 0 | 151 KlassHandle field_klass, Handle object, jfieldID field, |
| 152 char sig_type, jvalue *value); | |
| 153 | |
| 154 | |
| 155 // posts a DynamicCodeGenerated event (internal/private implementation). | |
| 156 // The public post_dynamic_code_generated* functions make use of the | |
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157 // internal implementation. Also called from JvmtiDeferredEvent::post() |
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158 static void post_dynamic_code_generated_internal(const char *name, const void *code_begin, const void *code_end) NOT_JVMTI_RETURN; |
| 0 | 159 |
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160 private: |
| 0 | 161 |
| 162 // GenerateEvents support to allow posting of CompiledMethodLoad and | |
| 163 // DynamicCodeGenerated events for a given environment. | |
| 164 friend class JvmtiCodeBlobEvents; | |
| 165 | |
| 166 static void post_compiled_method_load(JvmtiEnv* env, const jmethodID method, const jint length, | |
| 167 const void *code_begin, const jint map_length, | |
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168 const jvmtiAddrLocationMap* map) NOT_JVMTI_RETURN; |
| 0 | 169 static void post_dynamic_code_generated(JvmtiEnv* env, const char *name, const void *code_begin, |
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170 const void *code_end) NOT_JVMTI_RETURN; |
| 0 | 171 |
| 172 // The RedefineClasses() API breaks some invariants in the "regular" | |
| 173 // system. For example, there are sanity checks when GC'ing nmethods | |
| 174 // that require the containing class to be unloading. However, when a | |
| 175 // method is redefined, the old method and nmethod can become GC'able | |
| 176 // without the containing class unloading. The state of becoming | |
| 177 // GC'able can be asynchronous to the RedefineClasses() call since | |
| 178 // the old method may still be running and cannot be GC'ed until | |
| 179 // after all old invocations have finished. Additionally, a method | |
| 180 // that has not been redefined may have an nmethod that depends on | |
| 181 // the redefined method. The dependent nmethod will get deopted in | |
| 182 // this case and may also be GC'able without the containing class | |
| 183 // being unloaded. | |
| 184 // | |
| 185 // This flag indicates whether RedefineClasses() has ever redefined | |
| 186 // one or more classes during the lifetime of the VM. The flag should | |
| 187 // only be set by the friend class and can be queried by other sub | |
| 188 // systems as needed to relax invariant checks. | |
| 189 static bool _has_redefined_a_class; | |
| 190 friend class VM_RedefineClasses; | |
| 191 inline static void set_has_redefined_a_class() { | |
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192 JVMTI_ONLY(_has_redefined_a_class = true;) |
| 0 | 193 } |
| 194 // Flag to indicate if the compiler has recorded all dependencies. When the | |
| 195 // can_redefine_classes capability is enabled in the OnLoad phase then the compiler | |
| 196 // records all dependencies from startup. However if the capability is first | |
| 197 // enabled some time later then the dependencies recorded by the compiler | |
| 198 // are incomplete. This flag is used by RedefineClasses to know if the | |
| 199 // dependency information is complete or not. | |
| 200 static bool _all_dependencies_are_recorded; | |
| 201 | |
| 202 public: | |
| 203 inline static bool has_redefined_a_class() { | |
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204 JVMTI_ONLY(return _has_redefined_a_class); |
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205 NOT_JVMTI(return false); |
| 0 | 206 } |
| 207 | |
| 208 inline static bool all_dependencies_are_recorded() { | |
| 209 return _all_dependencies_are_recorded; | |
| 210 } | |
| 211 | |
| 212 inline static void set_all_dependencies_are_recorded(bool on) { | |
| 213 _all_dependencies_are_recorded = (on != 0); | |
| 214 } | |
| 215 | |
| 216 | |
| 217 // let JVMTI know that the JVM_OnLoad code is running | |
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218 static void enter_onload_phase() NOT_JVMTI_RETURN; |
| 0 | 219 |
| 220 // let JVMTI know that the VM isn't up yet (and JVM_OnLoad code isn't running) | |
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221 static void enter_primordial_phase() NOT_JVMTI_RETURN; |
| 0 | 222 |
| 223 // let JVMTI know that the VM isn't up yet but JNI is live | |
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224 static void enter_start_phase() NOT_JVMTI_RETURN; |
| 0 | 225 |
| 226 // let JVMTI know that the VM is fully up and running now | |
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227 static void enter_live_phase() NOT_JVMTI_RETURN; |
| 0 | 228 |
| 229 // ------ can_* conditions (below) are set at OnLoad and never changed ------------ | |
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230 inline static bool can_modify_any_class() { |
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231 JVMTI_ONLY(return _can_modify_any_class); |
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232 NOT_JVMTI(return false); |
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233 } |
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234 inline static bool can_access_local_variables() { |
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235 JVMTI_ONLY(return _can_access_local_variables); |
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236 NOT_JVMTI(return false); |
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237 } |
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238 inline static bool can_hotswap_or_post_breakpoint() { |
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239 JVMTI_ONLY(return _can_hotswap_or_post_breakpoint); |
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240 NOT_JVMTI(return false); |
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241 } |
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242 inline static bool can_walk_any_space() { |
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243 JVMTI_ONLY(return _can_walk_any_space); |
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244 NOT_JVMTI(return false); |
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245 } |
| 0 | 246 |
| 247 // field access management | |
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248 static address get_field_access_count_addr() NOT_JVMTI_RETURN_(0); |
| 0 | 249 |
| 250 // field modification management | |
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251 static address get_field_modification_count_addr() NOT_JVMTI_RETURN_(0); |
| 0 | 252 |
| 253 // ----------------- | |
| 254 | |
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255 static bool is_jvmti_version(jint version) { |
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256 JVMTI_ONLY(return (version & JVMTI_VERSION_MASK) == JVMTI_VERSION_VALUE); |
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257 NOT_JVMTI(return false); |
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258 } |
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259 static bool is_jvmdi_version(jint version) { |
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260 JVMTI_ONLY(return (version & JVMTI_VERSION_MASK) == JVMDI_VERSION_VALUE); |
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261 NOT_JVMTI(return false); |
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262 } |
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263 static jint get_jvmti_interface(JavaVM *jvm, void **penv, jint version) NOT_JVMTI_RETURN_(0); |
| 1121 | 264 static void decode_version_values(jint version, int * major, int * minor, |
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265 int * micro) NOT_JVMTI_RETURN; |
| 0 | 266 |
| 267 // single stepping management methods | |
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268 static void at_single_stepping_point(JavaThread *thread, Method* method, address location) NOT_JVMTI_RETURN; |
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269 static void expose_single_stepping(JavaThread *thread) NOT_JVMTI_RETURN; |
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270 static bool hide_single_stepping(JavaThread *thread) NOT_JVMTI_RETURN_(false); |
| 0 | 271 |
| 272 // Methods that notify the debugger that something interesting has happened in the VM. | |
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273 static void post_vm_start () NOT_JVMTI_RETURN; |
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274 static void post_vm_initialized () NOT_JVMTI_RETURN; |
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275 static void post_vm_death () NOT_JVMTI_RETURN; |
| 0 | 276 |
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277 static void post_single_step (JavaThread *thread, Method* method, address location) NOT_JVMTI_RETURN; |
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278 static void post_raw_breakpoint (JavaThread *thread, Method* method, address location) NOT_JVMTI_RETURN; |
| 0 | 279 |
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280 static void post_exception_throw (JavaThread *thread, Method* method, address location, oop exception) NOT_JVMTI_RETURN; |
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281 static void notice_unwind_due_to_exception (JavaThread *thread, Method* method, address location, oop exception, bool in_handler_frame) NOT_JVMTI_RETURN; |
| 0 | 282 |
| 283 static oop jni_GetField_probe (JavaThread *thread, jobject jobj, | |
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284 oop obj, Klass* klass, jfieldID fieldID, bool is_static) |
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285 NOT_JVMTI_RETURN_(NULL); |
| 0 | 286 static oop jni_GetField_probe_nh (JavaThread *thread, jobject jobj, |
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287 oop obj, Klass* klass, jfieldID fieldID, bool is_static) |
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288 NOT_JVMTI_RETURN_(NULL); |
| 0 | 289 static void post_field_access_by_jni (JavaThread *thread, oop obj, |
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290 Klass* klass, jfieldID fieldID, bool is_static) NOT_JVMTI_RETURN; |
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291 static void post_field_access (JavaThread *thread, Method* method, |
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292 address location, KlassHandle field_klass, Handle object, jfieldID field) NOT_JVMTI_RETURN; |
| 0 | 293 static oop jni_SetField_probe (JavaThread *thread, jobject jobj, |
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294 oop obj, Klass* klass, jfieldID fieldID, bool is_static, char sig_type, |
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295 jvalue *value) NOT_JVMTI_RETURN_(NULL); |
| 0 | 296 static oop jni_SetField_probe_nh (JavaThread *thread, jobject jobj, |
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297 oop obj, Klass* klass, jfieldID fieldID, bool is_static, char sig_type, |
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298 jvalue *value) NOT_JVMTI_RETURN_(NULL); |
| 0 | 299 static void post_field_modification_by_jni(JavaThread *thread, oop obj, |
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300 Klass* klass, jfieldID fieldID, bool is_static, char sig_type, |
| 0 | 301 jvalue *value); |
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302 static void post_raw_field_modification(JavaThread *thread, Method* method, |
| 0 | 303 address location, KlassHandle field_klass, Handle object, jfieldID field, |
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304 char sig_type, jvalue *value) NOT_JVMTI_RETURN; |
| 0 | 305 |
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306 static void post_method_entry (JavaThread *thread, Method* method, frame current_frame) NOT_JVMTI_RETURN; |
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307 static void post_method_exit (JavaThread *thread, Method* method, frame current_frame) NOT_JVMTI_RETURN; |
| 0 | 308 |
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309 static void post_class_load (JavaThread *thread, Klass* klass) NOT_JVMTI_RETURN; |
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310 static void post_class_unload (Klass* klass) NOT_JVMTI_RETURN; |
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311 static void post_class_prepare (JavaThread *thread, Klass* klass) NOT_JVMTI_RETURN; |
| 0 | 312 |
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313 static void post_thread_start (JavaThread *thread) NOT_JVMTI_RETURN; |
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314 static void post_thread_end (JavaThread *thread) NOT_JVMTI_RETURN; |
| 0 | 315 |
| 316 // Support for java.lang.instrument agent loading. | |
| 317 static bool _should_post_class_file_load_hook; | |
| 318 inline static void set_should_post_class_file_load_hook(bool on) { _should_post_class_file_load_hook = on; } | |
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319 inline static bool should_post_class_file_load_hook() { |
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320 JVMTI_ONLY(return _should_post_class_file_load_hook); |
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321 NOT_JVMTI(return false;) |
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322 } |
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323 static void post_class_file_load_hook(Symbol* h_name, Handle class_loader, |
| 0 | 324 Handle h_protection_domain, |
| 325 unsigned char **data_ptr, unsigned char **end_ptr, | |
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326 JvmtiCachedClassFileData **cache_ptr) NOT_JVMTI_RETURN; |
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327 static void post_native_method_bind(Method* method, address* function_ptr) NOT_JVMTI_RETURN; |
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328 static void post_compiled_method_load(nmethod *nm) NOT_JVMTI_RETURN; |
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329 static void post_dynamic_code_generated(const char *name, const void *code_begin, const void *code_end) NOT_JVMTI_RETURN; |
| 0 | 330 |
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331 // used to post a CompiledMethodUnload event |
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332 static void post_compiled_method_unload(jmethodID mid, const void *code_begin) NOT_JVMTI_RETURN; |
| 0 | 333 |
| 334 // similiar to post_dynamic_code_generated except that it can be used to | |
| 335 // post a DynamicCodeGenerated event while holding locks in the VM. Any event | |
| 336 // posted using this function is recorded by the enclosing event collector | |
| 337 // -- JvmtiDynamicCodeEventCollector. | |
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338 static void post_dynamic_code_generated_while_holding_locks(const char* name, address code_begin, address code_end) NOT_JVMTI_RETURN; |
| 0 | 339 |
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340 static void post_garbage_collection_finish() NOT_JVMTI_RETURN; |
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341 static void post_garbage_collection_start() NOT_JVMTI_RETURN; |
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342 static void post_data_dump() NOT_JVMTI_RETURN; |
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343 static void post_monitor_contended_enter(JavaThread *thread, ObjectMonitor *obj_mntr) NOT_JVMTI_RETURN; |
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344 static void post_monitor_contended_entered(JavaThread *thread, ObjectMonitor *obj_mntr) NOT_JVMTI_RETURN; |
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345 static void post_monitor_wait(JavaThread *thread, oop obj, jlong timeout) NOT_JVMTI_RETURN; |
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346 static void post_monitor_waited(JavaThread *thread, ObjectMonitor *obj_mntr, jboolean timed_out) NOT_JVMTI_RETURN; |
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347 static void post_object_free(JvmtiEnv* env, jlong tag) NOT_JVMTI_RETURN; |
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348 static void post_resource_exhausted(jint resource_exhausted_flags, const char* detail) NOT_JVMTI_RETURN; |
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349 static void record_vm_internal_object_allocation(oop object) NOT_JVMTI_RETURN; |
| 0 | 350 // Post objects collected by vm_object_alloc_event_collector. |
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351 static void post_vm_object_alloc(JavaThread *thread, oop object) NOT_JVMTI_RETURN; |
| 0 | 352 // Collects vm internal objects for later event posting. |
| 353 inline static void vm_object_alloc_event_collector(oop object) { | |
| 354 if (should_post_vm_object_alloc()) { | |
| 355 record_vm_internal_object_allocation(object); | |
| 356 } | |
| 357 } | |
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358 inline static void post_array_size_exhausted() { |
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359 if (should_post_resource_exhausted()) { |
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360 post_resource_exhausted(JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR, |
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361 "Requested array size exceeds VM limit"); |
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362 } |
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363 } |
| 0 | 364 |
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365 static void cleanup_thread (JavaThread* thread) NOT_JVMTI_RETURN; |
| 0 | 366 |
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367 static void oops_do(OopClosure* f) NOT_JVMTI_RETURN; |
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368 static void weak_oops_do(BoolObjectClosure* b, OopClosure* f) NOT_JVMTI_RETURN; |
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369 static void gc_epilogue() NOT_JVMTI_RETURN; |
| 0 | 370 |
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371 static void transition_pending_onload_raw_monitors() NOT_JVMTI_RETURN; |
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372 |
| 0 | 373 // attach support |
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374 static jint load_agent_library(AttachOperation* op, outputStream* out) NOT_JVMTI_RETURN_(JNI_ERR); |
| 0 | 375 |
| 376 // SetNativeMethodPrefix support | |
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377 static char** get_all_native_method_prefixes(int* count_ptr) NOT_JVMTI_RETURN_(NULL); |
| 0 | 378 }; |
| 379 | |
| 380 // Support class used by JvmtiDynamicCodeEventCollector and others. It | |
| 381 // describes a single code blob by name and address range. | |
| 6197 | 382 class JvmtiCodeBlobDesc : public CHeapObj<mtInternal> { |
| 0 | 383 private: |
| 384 char _name[64]; | |
| 385 address _code_begin; | |
| 386 address _code_end; | |
| 387 | |
| 388 public: | |
| 389 JvmtiCodeBlobDesc(const char *name, address code_begin, address code_end) { | |
| 390 assert(name != NULL, "all code blobs must be named"); | |
| 391 strncpy(_name, name, sizeof(_name)); | |
| 392 _name[sizeof(_name)-1] = '\0'; | |
| 393 _code_begin = code_begin; | |
| 394 _code_end = code_end; | |
| 395 } | |
| 396 char* name() { return _name; } | |
| 397 address code_begin() { return _code_begin; } | |
| 398 address code_end() { return _code_end; } | |
| 399 }; | |
| 400 | |
| 401 // JvmtiEventCollector is a helper class to setup thread for | |
| 402 // event collection. | |
| 403 class JvmtiEventCollector : public StackObj { | |
| 404 private: | |
| 405 JvmtiEventCollector* _prev; // Save previous one to support nested event collector. | |
| 406 | |
| 407 public: | |
| 408 void setup_jvmti_thread_state(); // Set this collector in current thread. | |
| 409 void unset_jvmti_thread_state(); // Reset previous collector in current thread. | |
| 410 virtual bool is_dynamic_code_event() { return false; } | |
| 411 virtual bool is_vm_object_alloc_event(){ return false; } | |
| 412 JvmtiEventCollector *get_prev() { return _prev; } | |
| 413 }; | |
| 414 | |
| 415 // A JvmtiDynamicCodeEventCollector is a helper class for the JvmtiExport | |
| 416 // interface. It collects "dynamic code generated" events that are posted | |
| 417 // while holding locks. When the event collector goes out of scope the | |
| 418 // events will be posted. | |
| 419 // | |
| 420 // Usage :- | |
| 421 // | |
| 422 // { | |
| 423 // JvmtiDynamicCodeEventCollector event_collector; | |
| 424 // : | |
| 425 // { MutexLocker ml(...) | |
| 426 // : | |
| 427 // JvmtiExport::post_dynamic_code_generated_while_holding_locks(...) | |
| 428 // } | |
| 429 // // event collector goes out of scope => post events to profiler. | |
| 430 // } | |
| 431 | |
| 432 class JvmtiDynamicCodeEventCollector : public JvmtiEventCollector { | |
| 433 private: | |
| 434 GrowableArray<JvmtiCodeBlobDesc*>* _code_blobs; // collected code blob events | |
| 435 | |
| 436 friend class JvmtiExport; | |
| 437 void register_stub(const char* name, address start, address end); | |
| 438 | |
| 439 public: | |
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440 JvmtiDynamicCodeEventCollector() NOT_JVMTI_RETURN; |
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441 ~JvmtiDynamicCodeEventCollector() NOT_JVMTI_RETURN; |
| 0 | 442 bool is_dynamic_code_event() { return true; } |
| 443 | |
| 444 }; | |
| 445 | |
| 446 // Used to record vm internally allocated object oops and post | |
| 447 // vm object alloc event for objects visible to java world. | |
| 448 // Constructor enables JvmtiThreadState flag and all vm allocated | |
| 449 // objects are recorded in a growable array. When destructor is | |
| 450 // called the vm object alloc event is posted for each objects | |
| 451 // visible to java world. | |
| 452 // See jvm.cpp file for its usage. | |
| 453 // | |
| 454 class JvmtiVMObjectAllocEventCollector : public JvmtiEventCollector { | |
| 455 private: | |
| 456 GrowableArray<oop>* _allocated; // field to record vm internally allocated object oop. | |
| 457 bool _enable; // This flag is enabled in constructor and disabled | |
| 458 // in destructor before posting event. To avoid | |
| 459 // collection of objects allocated while running java code inside | |
| 460 // agent post_vm_object_alloc() event handler. | |
| 461 | |
| 462 //GC support | |
| 463 void oops_do(OopClosure* f); | |
| 464 | |
| 465 friend class JvmtiExport; | |
| 466 // Record vm allocated object oop. | |
| 467 inline void record_allocation(oop obj); | |
| 468 | |
| 469 //GC support | |
| 470 static void oops_do_for_all_threads(OopClosure* f); | |
| 471 | |
| 472 public: | |
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473 JvmtiVMObjectAllocEventCollector() NOT_JVMTI_RETURN; |
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474 ~JvmtiVMObjectAllocEventCollector() NOT_JVMTI_RETURN; |
| 0 | 475 bool is_vm_object_alloc_event() { return true; } |
| 476 | |
| 477 bool is_enabled() { return _enable; } | |
| 478 void set_enabled(bool on) { _enable = on; } | |
| 479 }; | |
| 480 | |
| 481 | |
| 482 | |
| 483 // Marker class to disable the posting of VMObjectAlloc events | |
| 484 // within its scope. | |
| 485 // | |
| 486 // Usage :- | |
| 487 // | |
| 488 // { | |
| 489 // NoJvmtiVMObjectAllocMark njm; | |
| 490 // : | |
| 491 // // VMObjAlloc event will not be posted | |
| 492 // JvmtiExport::vm_object_alloc_event_collector(obj); | |
| 493 // : | |
| 494 // } | |
| 495 | |
| 496 class NoJvmtiVMObjectAllocMark : public StackObj { | |
| 497 private: | |
| 498 // enclosing collector if enabled, NULL otherwise | |
| 499 JvmtiVMObjectAllocEventCollector *_collector; | |
| 500 | |
| 501 bool was_enabled() { return _collector != NULL; } | |
| 502 | |
| 503 public: | |
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504 NoJvmtiVMObjectAllocMark() NOT_JVMTI_RETURN; |
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505 ~NoJvmtiVMObjectAllocMark() NOT_JVMTI_RETURN; |
| 0 | 506 }; |
| 507 | |
| 508 | |
| 509 // Base class for reporting GC events to JVMTI. | |
| 510 class JvmtiGCMarker : public StackObj { | |
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511 public: |
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512 JvmtiGCMarker() NOT_JVMTI_RETURN; |
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513 ~JvmtiGCMarker() NOT_JVMTI_RETURN; |
| 0 | 514 }; |
| 515 | |
| 516 // JvmtiHideSingleStepping is a helper class for hiding | |
| 517 // internal single step events. | |
| 518 class JvmtiHideSingleStepping : public StackObj { | |
| 519 private: | |
| 520 bool _single_step_hidden; | |
| 521 JavaThread * _thread; | |
| 522 | |
| 523 public: | |
| 524 JvmtiHideSingleStepping(JavaThread * thread) { | |
| 525 assert(thread != NULL, "sanity check"); | |
| 526 | |
| 527 _single_step_hidden = false; | |
| 528 _thread = thread; | |
| 529 if (JvmtiExport::should_post_single_step()) { | |
| 530 _single_step_hidden = JvmtiExport::hide_single_stepping(_thread); | |
| 531 } | |
| 532 } | |
| 533 | |
| 534 ~JvmtiHideSingleStepping() { | |
| 535 if (_single_step_hidden) { | |
| 536 JvmtiExport::expose_single_stepping(_thread); | |
| 537 } | |
| 538 } | |
| 539 }; | |
| 540 | |
| 1972 | 541 #endif // SHARE_VM_PRIMS_JVMTIEXPORT_HPP |