1 <?xml version="1.0" encoding="utf-8"?>
   2 
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   7  This code is free software; you can redistribute it and/or modify it
   8  under the terms of the GNU General Public License version 2 only, as
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  11  This code is distributed in the hope that it will be useful, but WITHOUT
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  13  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  version 2 for more details (a copy is included in the LICENSE file that
  15  accompanied this code).
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  17  You should have received a copy of the GNU General Public License version
  18  2 along with this work; if not, write to the Free Software Foundation,
  19  Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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  21  Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  or visit www.oracle.com if you need additional information or have any
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  26 
  27 <Metadata>
  28 
  29   <Event name="ThreadStart" category="Java Application" label="Java Thread Start" thread="true" startTime="false">
  30     <Field type="Thread" name="thread" label="Java Thread" />
  31   </Event>
  32 
  33   <Event name="ThreadEnd" category="Java Application" label="Java Thread End" thread="true" startTime="false">
  34     <Field type="Thread" name="thread" label="Java Thread" />
  35   </Event>
  36 
  37   <Event name="ThreadSleep" category="Java Application" label="Java Thread Sleep" thread="true" stackTrace="true">
  38     <Field type="long" contentType="millis" name="time" label="Sleep Time" />
  39   </Event>
  40 
  41   <Event name="ThreadPark" category="Java Application" label="Java Thread Park" thread="true" stackTrace="true">
  42     <Field type="Class" name="parkedClass" label="Class Parked On" />
  43     <Field type="long" contentType="millis" name="timeout" label="Park Timeout" />
  44     <Field type="ulong" contentType="address" name="address" label="Address of Object Parked" relation="JavaMonitorAddress" />
  45   </Event>
  46 
  47   <Event name="JavaMonitorEnter" category="Java Application" label="Java Monitor Blocked" thread="true" stackTrace="true">
  48     <Field type="Class" name="monitorClass" label="Monitor Class" />
  49     <Field type="Thread" name="previousOwner" label="Previous Monitor Owner" />
  50     <Field type="ulong" contentType="address" name="address" label="Monitor Address" relation="JavaMonitorAddress" />
  51   </Event>
  52 
  53   <Event name="JavaMonitorWait" category="Java Application" label="Java Monitor Wait" description="Waiting on a Java monitor" thread="true" stackTrace="true">
  54     <Field type="Class" name="monitorClass" label="Monitor Class" description="Class of object waited on" />
  55     <Field type="Thread" name="notifier" label="Notifier Thread" description="Notifying Thread" />
  56     <Field type="long" contentType="millis" name="timeout" label="Timeout" description="Maximum wait time" />
  57     <Field type="boolean" name="timedOut" label="Timed Out" description="Wait has been timed out" />
  58     <Field type="ulong" contentType="address" name="address" label="Monitor Address" description="Address of object waited on" relation="JavaMonitorAddress" />
  59   </Event>
  60 
  61   <Event name="JavaMonitorInflate" category="Java Application" label="Java Monitor Inflated" thread="true" stackTrace="true">
  62     <Field type="Class" name="monitorClass" label="Monitor Class" />
  63     <Field type="ulong" contentType="address" name="address" label="Monitor Address" relation="JavaMonitorAddress" />
  64     <Field type="InflateCause" name="cause" label="Monitor Inflation Cause" description="Cause of inflation" />
  65   </Event>
  66 
  67   <Event name="BiasedLockRevocation" category="Java Application" label="Biased Lock Revocation" description="Revoked bias of object" thread="true"
  68     stackTrace="true">
  69     <Field type="Class" name="lockClass" label="Lock Class" description="Class of object whose biased lock was revoked" />
  70     <Field type="int" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
  71     <Field type="Thread" name="previousOwner" label="Previous Owner" description="Thread owning the bias before revocation" />
  72   </Event>
  73 
  74   <Event name="BiasedLockSelfRevocation" category="Java Application" label="Biased Lock Self Revocation" description="Revoked bias of object biased towards own thread"
  75     thread="true" stackTrace="true">
  76     <Field type="Class" name="lockClass" label="Lock Class" description="Class of object whose biased lock was revoked" />
  77   </Event>
  78 
  79   <Event name="BiasedLockClassRevocation" category="Java Application" label="Biased Lock Class Revocation" description="Revoked biases for all instances of a class"
  80     thread="true" stackTrace="true">
  81     <Field type="Class" name="revokedClass" label="Revoked Class" description="Class whose biased locks were revoked" />
  82     <Field type="boolean" name="disableBiasing" label="Disable Further Biasing" description="Whether further biasing for instances of this class will be allowed" />
  83     <Field type="int" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
  84   </Event>
  85 
  86   <Event name="ReservedStackActivation" category="Java Virtual Machine, Runtime" label="Reserved Stack Activation"
  87     description="Activation of Reserved Stack Area caused by stack overflow with ReservedStackAccess annotated method in call stack" thread="true" stackTrace="true"
  88     startTime="false">
  89     <Field type="Method" name="method" label="Java Method" />
  90   </Event>
  91 
  92   <Event name="ClassLoad" category="Java Virtual Machine, Class Loading" label="Class Load" thread="true" stackTrace="true">
  93     <Field type="Class" name="loadedClass" label="Loaded Class" />
  94     <Field type="ClassLoader" name="definingClassLoader" label="Defining Class Loader" />
  95     <Field type="ClassLoader" name="initiatingClassLoader" label="Initiating Class Loader" />
  96   </Event>
  97 
  98   <Event name="ClassDefine" category="Java Virtual Machine, Class Loading" label="Class Define" thread="true" stackTrace="true" startTime="false">
  99     <Field type="Class" name="definedClass" label="Defined Class" />
 100     <Field type="ClassLoader" name="definingClassLoader" label="Defining Class Loader" />
 101   </Event>
 102 
 103   <Event name="ClassUnload" category="Java Virtual Machine, Class Loading" label="Class Unload" thread="true" startTime="false">
 104     <Field type="Class" name="unloadedClass" label="Unloaded Class" />
 105     <Field type="ClassLoader" name="definingClassLoader" label="Defining Class Loader" />
 106   </Event>
 107 
 108   <Event name="IntFlagChanged" category="Java Virtual Machine, Flag" label="Int Flag Changed" startTime="false">
 109     <Field type="string" name="name" label="Name" />
 110     <Field type="int" name="oldValue" label="Old Value" />
 111     <Field type="int" name="newValue" label="New Value" />
 112     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 113   </Event>
 114 
 115   <Event name="UnsignedIntFlagChanged" category="Java Virtual Machine, Flag" label="Unsigned Int Flag Changed" startTime="false">
 116     <Field type="string" name="name" label="Name" />
 117     <Field type="uint" name="oldValue" label="Old Value" />
 118     <Field type="uint" name="newValue" label="New Value" />
 119     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 120   </Event>
 121 
 122   <Event name="LongFlagChanged" category="Java Virtual Machine, Flag" label="Long Flag Changed" startTime="false">
 123     <Field type="string" name="name" label="Name" />
 124     <Field type="long" name="oldValue" label="Old Value" />
 125     <Field type="long" name="newValue" label="New Value" />
 126     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 127   </Event>
 128 
 129   <Event name="UnsignedLongFlagChanged" category="Java Virtual Machine, Flag" label="Unsigned Long Flag Changed" startTime="false">
 130     <Field type="string" name="name" label="Name" />
 131     <Field type="ulong" name="oldValue" label="Old Value" />
 132     <Field type="ulong" name="newValue" label="New Value" />
 133     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 134   </Event>
 135 
 136   <Event name="DoubleFlagChanged" category="Java Virtual Machine, Flag" label="Double Flag Changed" startTime="false">
 137     <Field type="string" name="name" label="Name" />
 138     <Field type="double" name="oldValue" label="Old Value" />
 139     <Field type="double" name="newValue" label="New Value" />
 140     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 141   </Event>
 142 
 143   <Event name="BooleanFlagChanged" category="Java Virtual Machine, Flag" label="Boolean Flag Changed" startTime="false">
 144     <Field type="string" name="name" label="Name" />
 145     <Field type="boolean" name="oldValue" label="Old Value" />
 146     <Field type="boolean" name="newValue" label="New Value" />
 147     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 148   </Event>
 149 
 150   <Event name="StringFlagChanged" category="Java Virtual Machine, Flag" label="String Flag Changed" startTime="false">
 151     <Field type="string" name="name" label="Name" />
 152     <Field type="string" name="oldValue" label="Old Value" />
 153     <Field type="string" name="newValue" label="New Value" />
 154     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 155   </Event>
 156  
 157   <Type name="VirtualSpace">
 158     <Field type="ulong" contentType="address" name="start" label="Start Address" description="Start address of the virtual space" />
 159     <Field type="ulong" contentType="address" name="committedEnd" label="Committed End Address" description="End address of the committed memory for the virtual space" />
 160     <Field type="ulong" contentType="bytes" name="committedSize" label="Committed Size" description="Size of the committed memory for the virtual space" />
 161     <Field type="ulong" contentType="address" name="reservedEnd" label="Reserved End Address" description="End address of the reserved memory for the virtual space" />
 162     <Field type="ulong" contentType="bytes" name="reservedSize" label="Reserved Size" description="Size of the reserved memory for the virtual space" />
 163   </Type>
 164   
 165   <Type name="ObjectSpace">
 166     <Field type="ulong" contentType="address" name="start" label="Start Address" description="Start address of the space" />
 167     <Field type="ulong" contentType="address" name="end" label="End Address" description="End address of the space" />
 168     <Field type="ulong" contentType="bytes" name="used" label="Used" description="Bytes allocated by objects in the space" />
 169     <Field type="ulong" contentType="bytes" name="size" label="Size" description="Size of the space" />
 170   </Type>
 171   
 172   <Event name="GCHeapSummary" category="Java Virtual Machine, GC, Heap" label="Heap Summary" startTime="false">
 173     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 174     <Field type="GCWhen" name="when" label="When" />
 175     <Field type="VirtualSpace" struct="true" name="heapSpace" label="Heap Space" />
 176     <Field type="ulong" contentType="bytes" name="heapUsed" label="Heap Used" description="Bytes allocated by objects in the heap" />
 177   </Event>
 178  
 179   <Type name="MetaspaceSizes">
 180     <Field type="ulong" contentType="bytes" name="committed" label="Committed" description="Committed memory for this space" />
 181     <Field type="ulong" contentType="bytes" name="used" label="Used" description="Bytes allocated by objects in the space" />
 182     <Field type="ulong" contentType="bytes" name="reserved" label="Reserved" description="Reserved memory for this space" />
 183   </Type>
 184  
 185   <Event name="MetaspaceSummary" category="Java Virtual Machine, GC, Heap" label="Metaspace Summary" startTime="false">
 186     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 187     <Field type="GCWhen" name="when" label="When" />
 188     <Field type="ulong" contentType="bytes" name="gcThreshold" label="GC Threshold" />
 189     <Field type="MetaspaceSizes" struct="true" name="metaspace" label="Total" />
 190     <Field type="MetaspaceSizes" struct="true" name="dataSpace" label="Data" />
 191     <Field type="MetaspaceSizes" struct="true" name="classSpace" label="Class" />
 192   </Event>
 193 
 194   <Event name="MetaspaceGCThreshold" category="Java Virtual Machine, GC, Metaspace" label="Metaspace GC Threshold" startTime="false">
 195     <Field type="ulong" contentType="bytes" name="oldValue" label="Old Value" />
 196     <Field type="ulong" contentType="bytes" name="newValue" label="New Value" />
 197     <Field type="GCThresholdUpdater" name="updater" label="Updater" />
 198   </Event>
 199 
 200   <Event name="MetaspaceAllocationFailure" category="Java Virtual Machine, GC, Metaspace" label="Metaspace Allocation Failure" startTime="false"
 201     stackTrace="true">
 202     <Field type="ClassLoader" name="classLoader" label="Class Loader" />
 203     <Field type="boolean" name="anonymousClassLoader" label="Anonymous Class Loader" />
 204     <Field type="ulong" contentType="bytes" name="size" label="Size" />
 205     <Field type="MetadataType" name="metadataType" label="Metadata Type" />
 206     <Field type="MetaspaceObjectType" name="metaspaceObjectType" label="Metaspace Object Type" />
 207   </Event>
 208 
 209   <Event name="MetaspaceOOM" category="Java Virtual Machine, GC, Metaspace" label="Metaspace Out of Memory" startTime="false" stackTrace="true">
 210     <Field type="ClassLoader" name="classLoader" label="Class Loader" />
 211     <Field type="boolean" name="anonymousClassLoader" label="Anonymous Class Loader" />
 212     <Field type="ulong" contentType="bytes" name="size" label="Size" />
 213     <Field type="MetadataType" name="metadataType" label="Metadata Type" />
 214     <Field type="MetaspaceObjectType" name="metaspaceObjectType" label="Metaspace Object Type" />
 215   </Event>
 216 
 217   <Event name="MetaspaceChunkFreeListSummary" category="Java Virtual Machine, GC, Metaspace" label="Metaspace Chunk Free List Summary" startTime="false">
 218     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 219     <Field type="GCWhen" name="when" label="When" />
 220     <Field type="MetadataType" name="metadataType" label="Metadata Type" />
 221     <Field type="ulong" name="specializedChunks" label="Specialized Chunks" />
 222     <Field type="ulong" contentType="bytes" name="specializedChunksTotalSize" label="Specialized Chunks Total Size" />
 223     <Field type="ulong" name="smallChunks" label="Small Chunks" />
 224     <Field type="ulong" contentType="bytes" name="smallChunksTotalSize" label="Small Chunks Total Size" />
 225     <Field type="ulong" name="mediumChunks" label="Medium Chunks" />
 226     <Field type="ulong" contentType="bytes" name="mediumChunksTotalSize" label="Medium Chunks Total Size" />
 227     <Field type="ulong" name="humongousChunks" label="Humongous Chunks" />
 228     <Field type="ulong" contentType="bytes" name="humongousChunksTotalSize" label="Humongous Chunks Total Size" />
 229   </Event>
 230 
 231   <Event name="PSHeapSummary" category="Java Virtual Machine, GC, Heap" label="Parallel Scavenge Heap Summary" startTime="false">
 232     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 233     <Field type="GCWhen" name="when" label="When" />
 234     <Field type="VirtualSpace" struct="true" name="oldSpace" label="Old Space" />
 235     <Field type="ObjectSpace" struct="true" name="oldObjectSpace" label="Old Object Space" />
 236     <Field type="VirtualSpace" struct="true" name="youngSpace" label="Young Space" />
 237     <Field type="ObjectSpace" struct="true" name="edenSpace" label="Eden Space" />
 238     <Field type="ObjectSpace" struct="true" name="fromSpace" label="From Space" />
 239     <Field type="ObjectSpace" struct="true" name="toSpace" label="To Space" />
 240   </Event>
 241 
 242   <Event name="G1HeapSummary" category="Java Virtual Machine, GC, Heap" label="G1 Heap Summary" startTime="false">
 243     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 244     <Field type="GCWhen" name="when" label="When" />
 245     <Field type="ulong" contentType="bytes" name="edenUsedSize" label="Eden Used Size" />
 246     <Field type="ulong" contentType="bytes" name="edenTotalSize" label="Eden Total Size" />
 247     <Field type="ulong" contentType="bytes" name="survivorUsedSize" label="Survivor Used Size" />
 248     <Field type="uint" name="numberOfRegions" label="Number of Regions" />
 249   </Event>
 250 
 251   <Event name="GarbageCollection" category="Java Virtual Machine, GC, Collector" label="Garbage Collection" description="Garbage collection performed by the JVM">
 252     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 253     <Field type="GCName" name="name" label="Name" description="The name of the Garbage Collector" />
 254     <Field type="GCCause" name="cause" label="Cause" description="The reason for triggering this Garbage Collection" />
 255     <Field type="Tickspan" name="sumOfPauses" label="Sum of Pauses" description="Sum of all the times in which Java execution was paused during the garbage collection" />
 256     <Field type="Tickspan" name="longestPause" label="Longest Pause" description="Longest individual pause during the garbage collection" />
 257   </Event>
 258 
 259   <Event name="ParallelOldGarbageCollection" category="Java Virtual Machine, GC, Collector" label="Parallel Old Garbage Collection"
 260     description="Extra information specific to Parallel Old Garbage Collections">
 261     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 262     <Field type="ulong" contentType="address" name="densePrefix" label="Dense Prefix" description="The address of the dense prefix, used when compacting" />
 263   </Event>
 264 
 265   <Event name="YoungGarbageCollection" category="Java Virtual Machine, GC, Collector" label="Young Garbage Collection" description="Extra information specific to Young Garbage Collections">
 266     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 267     <Field type="uint" name="tenuringThreshold" label="Tenuring Threshold" />
 268   </Event>
 269 
 270   <Event name="OldGarbageCollection" category="Java Virtual Machine, GC, Collector" label="Old Garbage Collection" description="Extra information specific to Old Garbage Collections">
 271     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 272   </Event>
 273 
 274   <Event name="G1GarbageCollection" category="Java Virtual Machine, GC, Collector" label="G1 Garbage Collection" description="Extra information specific to G1 Garbage Collections">
 275     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 276     <Field type="G1YCType" name="type" label="Type" />
 277   </Event>
 278 
 279   <Event name="G1MMU" category="Java Virtual Machine, GC, Detailed" label="G1 MMU Information" startTime="false">
 280     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 281     <Field type="long" contentType="millis" name="timeSlice" label="Time Slice" description="Time slice used to calculate MMU" />
 282     <Field type="long" contentType="millis" name="gcTime" label="GC Time" description="Time stopped because of GC during last time slice" />
 283     <Field type="long" contentType="millis" name="pauseTarget" label="Pause Target" description="Max time allowed to be spent on GC during last time slice" />
 284   </Event>
 285 
 286   <Event name="EvacuationInformation" category="Java Virtual Machine, GC, Detailed" label="Evacuation Information" startTime="false">
 287     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 288     <Field type="uint" name="cSetRegions" label="Collection Set Regions" />
 289     <Field type="ulong" contentType="bytes" name="cSetUsedBefore" label="Collection Set Before" description="Memory usage before GC in the collection set regions" />
 290     <Field type="ulong" contentType="bytes" name="cSetUsedAfter" label="Collection Set After" description="Memory usage after GC in the collection set regions" />
 291     <Field type="uint" name="allocationRegions" label="Allocation Regions" description="Regions chosen as allocation regions during evacuation (includes survivors and old space regions)" />
 292     <Field type="ulong" contentType="bytes" name="allocationRegionsUsedBefore" label="Allocation Regions Before" description="Memory usage before GC in allocation regions" />
 293     <Field type="ulong" contentType="bytes" name="allocationRegionsUsedAfter" label="Allocation Regions After" description="Memory usage after GC in allocation regions" />
 294     <Field type="ulong" contentType="bytes" name="bytesCopied" label="Bytes Copied" />
 295     <Field type="uint" name="regionsFreed" label="Regions Freed" />
 296   </Event>
 297 
 298   <Event name="GCReferenceStatistics" category="Java Virtual Machine, GC, Reference" label="GC Reference Statistics" startTime="false"
 299     description="Total count of processed references during GC">
 300     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 301     <Field type="ReferenceType" name="type" label="Type" />
 302     <Field type="ulong" name="count" label="Total Count" />
 303   </Event>
 304 
 305   <Type name="CopyFailed">
 306     <Field type="ulong" name="objectCount" label="Object Count" />
 307     <Field type="ulong" contentType="bytes" name="firstSize" label="First Failed Object Size" />
 308     <Field type="ulong" contentType="bytes" name="smallestSize" label="Smallest Failed Object Size" />
 309     <Field type="ulong" contentType="bytes" name="totalSize" label="Total Object Size" />
 310   </Type>
 311 
 312   <Event name="ObjectCountAfterGC" category="Java Virtual Machine, GC, Detailed" startTime="false" label="Object Count after GC">
 313     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 314     <Field type="Class" name="objectClass" label="Object Class" />
 315     <Field type="long" name="count" label="Count" />
 316     <Field type="ulong" contentType="bytes" name="totalSize" label="Total Size" />
 317   </Event>
 318 
 319   <Type name="G1EvacuationStatistics">
 320     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 321     <Field type="ulong" contentType="bytes" name="allocated" label="Allocated" description="Total memory allocated by PLABs" />
 322     <Field type="ulong" contentType="bytes" name="wasted" label="Wasted" description="Total memory wasted within PLABs due to alignment or refill" />
 323     <Field type="ulong" contentType="bytes" name="used" label="Used" description="Total memory occupied by objects within PLABs" />
 324     <Field type="ulong" contentType="bytes" name="undoWaste" label="Undo Wasted" description="Total memory wasted due to allocation undo within PLABs" />
 325     <Field type="ulong" contentType="bytes" name="regionEndWaste" label="Region End Wasted" description="Total memory wasted at the end of regions due to refill" />
 326     <Field type="uint" contentType="bytes" name="regionsRefilled" label="Region Refills" description="Total memory wasted at the end of regions due to refill" />
 327     <Field type="ulong" contentType="bytes" name="directAllocated" label="Allocated (direct)" description="Total memory allocated using direct allocation outside of PLABs" />
 328     <Field type="ulong" contentType="bytes" name="failureUsed" label="Used (failure)" description="Total memory occupied by objects in regions where evacuation failed" />
 329     <Field type="ulong" contentType="bytes" name="failureWaste" label="Wasted (failure)" description="Total memory left unused in regions where evacuation failed" />
 330   </Type>
 331 
 332   <Event name="G1EvacuationYoungStatistics" category="Java Virtual Machine, GC, Detailed" label="G1 Evacuation Statistics for Young" startTime="false"
 333     description="Memory related evacuation statistics during GC for the young generation">
 334     <Field type="G1EvacuationStatistics" struct="true" name="statistics" label="Evacuation Statistics" />
 335   </Event>
 336 
 337   <Event name="G1EvacuationOldStatistics" category="Java Virtual Machine, GC, Detailed" label="G1 Evacuation Memory Statistics for Old" startTime="false"
 338     description="Memory related evacuation statistics during GC for the old generation">
 339     <Field type="G1EvacuationStatistics" struct="true" name="statistics" label="Evacuation Statistics" />
 340   </Event>
 341 
 342   <Event name="G1BasicIHOP" category="Java Virtual Machine, GC, Detailed" label="G1 Basic IHOP Statistics" startTime="false"
 343     description="Basic statistics related to current IHOP calculation">
 344     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 345     <Field type="ulong" contentType="bytes" name="threshold" label="Current IHOP Threshold" description="Current IHOP threshold" />
 346     <Field type="float" contentType="percentage" name="thresholdPercentage" label="Current IHOP Threshold" description="Current IHOP threshold in percent of old generation" />
 347     <Field type="ulong" contentType="bytes" name="targetOccupancy" label="Target Occupancy" description="Target old generation occupancy to reach at the start of mixed GC" />
 348     <Field type="ulong" contentType="bytes" name="currentOccupancy" label="Current Occupancy" description="Current old generation occupancy" />
 349     <Field type="ulong" contentType="bytes" name="recentMutatorAllocationSize" label="Recent Mutator Allocation Size"
 350       description="Mutator allocation during mutator operation in the most recent interval" />
 351     <Field type="long" contentType="millis" name="recentMutatorDuration" label="Recent Mutator Duration" description="Time the mutator ran in the most recent interval" />
 352     <Field type="double" name="recentAllocationRate" label="Recent Allocation Rate" description="Allocation rate of the mutator in the most recent interval in bytes/second" />
 353     <Field type="long" contentType="millis" name="lastMarkingDuration" label="Last Marking Duration" description="Last time from the end of the last initial mark to the first mixed GC" />
 354   </Event>
 355 
 356   <Event name="G1AdaptiveIHOP" category="Java Virtual Machine, GC, Detailed" label="G1 Adaptive IHOP Statistics" startTime="false"
 357     description="Statistics related to current adaptive IHOP calculation">
 358     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 359     <Field type="ulong" contentType="bytes" name="threshold" label="Threshold" description="Current IHOP Threshold" />
 360     <Field type="float" contentType="percentage" name="thresholdPercentage" label="Threshold" description="Current IHOP threshold in percent of the internal target occupancy" />
 361     <Field type="ulong" contentType="bytes" name="ihopTargetOccupancy" label="IHOP Target Occupancy" description="Internal target old generation occupancy to reach at the start of mixed GC" />
 362     <Field type="ulong" contentType="bytes" name="currentOccupancy" label="Current Occupancy" description="Current old generation occupancy" />
 363     <Field type="ulong" contentType="bytes" name="additionalBufferSize" label="Additional Buffer" description="Additional buffer size" experimental="true" />
 364     <Field type="double" name="predictedAllocationRate" label="Predicted Allocation Rate" description="Current predicted allocation rate for the mutator in bytes/second" />
 365     <Field type="long" contentType="millis" name="predictedMarkingDuration" label="Predicted Marking Duration"
 366       description="Current predicted time from the end of the last initial mark to the first mixed GC" />
 367     <Field type="boolean" name="predictionActive" label="Prediction Active" description="Indicates whether the adaptive IHOP prediction is active" />
 368   </Event>
 369 
 370   <Event name="PromoteObjectInNewPLAB" category="Java Virtual Machine, GC, Detailed" label="Promotion in new PLAB"
 371     description="Object survived scavenge and was copied to a new Promotion Local Allocation Buffer (PLAB). Supported GCs are Parallel Scavange, G1 and CMS with Parallel New. Due to promotion being done in parallel an object might be reported multiple times as the GC threads race to copy all objects."
 372     thread="true" stackTrace="false" startTime="false">
 373     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" description="Identifier signifying GC during which the object was promoted" />
 374     <Field type="Class" name="objectClass" label="Object Class" description="Class of promoted object" />
 375     <Field type="ulong" contentType="bytes" name="objectSize" label="Object Size" description="Size of promoted object" />
 376     <Field type="uint" name="tenuringAge" label="Object Tenuring Age"
 377       description="Tenuring age of a surviving object before being copied. The tenuring age of an object is a value between 0-15 and is incremented each scavange the object survives. Newly allocated objects have tenuring age 0." />
 378     <Field type="boolean" name="tenured" label="Tenured" description="True if object was promoted to Old space, otherwise the object was aged and copied to a Survivor space" />
 379     <Field type="ulong" contentType="bytes" name="plabSize" label="PLAB Size" description="Size of the allocated PLAB to which the object was copied" />
 380   </Event>
 381 
 382   <Event name="PromoteObjectOutsidePLAB" category="Java Virtual Machine, GC, Detailed" label="Promotion outside PLAB"
 383     description="Object survived scavenge and was copied directly to the heap. Supported GCs are Parallel Scavange, G1 and CMS with Parallel New. Due to promotion being done in parallel an object might be reported multiple times as the GC threads race to copy all objects."
 384     thread="true" stackTrace="false" startTime="false">
 385     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" description="Identifier signifying GC during which the object was promoted" />
 386     <Field type="Class" name="objectClass" label="Object Class" description="Class of promoted object" />
 387     <Field type="ulong" contentType="bytes" name="objectSize" label="Object Size" description="Size of promoted object" />
 388     <Field type="uint" name="tenuringAge" label="Object Tenuring Age"
 389       description="Tenuring age of a surviving object before being copied. The tenuring age of an object is a value between 0-15 and is incremented each scavange the object survives. Newly allocated objects have tenuring age 0." />
 390     <Field type="boolean" name="tenured" label="Tenured" description="True if object was promoted to Old space, otherwise the object was aged and copied to a Survivor space" />
 391   </Event>
 392 
 393   <Event name="PromotionFailed" category="Java Virtual Machine, GC, Detailed" label="Promotion Failed" startTime="false" description="Promotion of an object failed">
 394     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 395     <Field type="CopyFailed" struct="true" name="promotionFailed" label="Promotion Failed Data" />
 396     <Field type="Thread" name="thread" label="Running thread" />
 397   </Event>
 398 
 399   <Event name="EvacuationFailed" category="Java Virtual Machine, GC, Detailed" label="Evacuation Failed" startTime="false" description="Evacuation of an object failed">
 400     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 401     <Field type="CopyFailed" struct="true" name="evacuationFailed" label="Evacuation Failed Data" />
 402   </Event>
 403 
 404   <Event name="ConcurrentModeFailure" category="Java Virtual Machine, GC, Detailed" label="Concurrent Mode Failure" startTime="false" description="Concurrent Mode failed">
 405     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 406   </Event>
 407 
 408   <Event name="GCPhasePause" category="Java Virtual Machine, GC, Phases" label="GC Phase Pause" thread="true">
 409     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 410     <Field type="string" name="name" label="Name" />
 411   </Event>
 412 
 413   <Event name="GCPhasePauseLevel1" category="Java Virtual Machine, GC, Phases" label="GC Phase Pause Level 1" thread="true">
 414     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 415     <Field type="string" name="name" label="Name" />
 416   </Event>
 417 
 418   <Event name="GCPhasePauseLevel2" category="Java Virtual Machine, GC, Phases" label="GC Phase Pause Level 2" thread="true">
 419     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 420     <Field type="string" name="name" label="Name" />
 421   </Event>
 422 
 423   <Event name="GCPhasePauseLevel3" category="Java Virtual Machine, GC, Phases" label="GC Phase Pause Level 3" thread="true">
 424     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 425     <Field type="string" name="name" label="Name" />
 426   </Event>
 427 
 428   <Event name="GCPhasePauseLevel4" category="Java Virtual Machine, GC, Phases" label="GC Phase Pause Level 4" thread="true">
 429     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 430     <Field type="string" name="name" label="Name" />
 431   </Event>
 432 
 433   <Event name="GCPhaseConcurrent" category="Java Virtual Machine, GC, Phases" label="GC Phase Concurrent" thread="true">
 434     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 435     <Field type="string" name="name" label="Name" />
 436   </Event>
 437 
 438   <Event name="AllocationRequiringGC" category="Java Virtual Machine, GC, Detailed" label="Allocation Requiring GC" thread="true" stackTrace="true"
 439     startTime="false">
 440     <Field type="uint" name="gcId" label="Pending GC Identifier" relation="GcId" />
 441     <Field type="ulong" contentType="bytes" name="size" label="Allocation Size" />
 442   </Event>
 443 
 444   <Event name="TenuringDistribution" category="Java Virtual Machine, GC, Detailed" label="Tenuring Distribution" startTime="false">
 445     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 446     <Field type="uint" name="age" label="Age" />
 447     <Field type="ulong" contentType="bytes" name="size" label="Size" />
 448   </Event>
 449 
 450   <Event name="G1HeapRegionTypeChange" category="Java Virtual Machine, GC, Detailed" label="G1 Heap Region Type Change" description="Information about a G1 heap region type change"
 451     startTime="false">
 452     <Field type="uint" name="index" label="Index" />
 453     <Field type="G1HeapRegionType" name="from" label="From" />
 454     <Field type="G1HeapRegionType" name="to" label="To" />
 455     <Field type="ulong" contentType="address" name="start" label="Start" />
 456     <Field type="ulong" contentType="bytes" name="used" label="Used" />
 457   </Event>
 458 
 459   <Event name="Compilation" category="Java Virtual Machine, Compiler" label="Compilation" thread="true">
 460     <Field type="Method" name="method" label="Java Method" />
 461     <Field type="uint" name="compileId" label="Compilation Identifier" relation="CompileId" />
 462     <Field type="ushort" name="compileLevel" label="Compilation Level" />
 463     <Field type="boolean" name="succeded" label="Succeeded" />
 464     <Field type="boolean" name="isOsr" label="On Stack Replacement" />
 465     <Field type="ulong" contentType="bytes" name="codeSize" label="Compiled Code Size" />
 466     <Field type="ulong" contentType="bytes" name="inlinedBytes" label="Inlined Code Size" />
 467   </Event>
 468 
 469   <Event name="CompilerPhase" category="Java Virtual Machine, Compiler" label="Compiler Phase" thread="true" >
 470     <Field type="CompilerPhaseType" name="phase" label="Compile Phase" />
 471     <Field type="uint" name="compileId" label="Compilation Identifier" relation="CompileId" />
 472     <Field type="ushort" name="phaseLevel" label="Phase Level" />
 473   </Event>
 474 
 475   <Event name="CompilationFailure" category="Java Virtual Machine, Compiler" label="Compilation Failure" thread="true"  startTime="false">
 476     <Field type="string" name="failureMessage" label="Failure Message" />
 477     <Field type="uint" name="compileId" label="Compilation Identifier" relation="CompileId" />
 478   </Event>
 479   
 480   <Type name="CalleeMethod">
 481     <Field type="string" name="type" label="Class" />
 482     <Field type="string" name="name" label="Method Name" />
 483     <Field type="string" name="descriptor" label="Method Descriptor" />
 484   </Type>
 485 
 486   <Event name="CompilerInlining" category="Java Virtual Machine, Compiler, Optimization" label="Method Inlining" thread="true" startTime="false">
 487     <Field type="uint" name="compileId" label="Compilation Identifier" relation="CompileId" />
 488     <Field type="Method" name="caller" label="Caller Method" />
 489     <Field type="CalleeMethod" name="callee" struct="true" label="Callee Method" />
 490     <Field type="boolean" name="succeeded" label="Succeeded" />
 491     <Field type="string" name="message" label="Message" />
 492     <Field type="int" name="bci" label="Byte Code Index" />
 493   </Event>
 494 
 495   <Event name="SweepCodeCache" category="Java Virtual Machine, Code Sweeper" label="Sweep Code Cache" thread="true" >
 496     <Field type="int" name="sweepId" label="Sweep Identifier" relation="SweepId" />
 497     <Field type="uint" name="sweptCount" label="Methods Swept" />
 498     <Field type="uint" name="flushedCount" label="Methods Flushed" />
 499     <Field type="uint" name="zombifiedCount" label="Methods Zombified" />
 500   </Event>
 501 
 502   <Event name="CodeCacheFull" category="Java Virtual Machine, Code Cache" label="Code Cache Full" thread="true" startTime="false">
 503     <Field type="CodeBlobType" name="codeBlobType" label="Code Heap" />
 504     <Field type="ulong" contentType="address" name="startAddress" label="Start Address" />
 505     <Field type="ulong" contentType="address" name="commitedTopAddress" label="Commited Top" />
 506     <Field type="ulong" contentType="address" name="reservedTopAddress" label="Reserved Top" />
 507     <Field type="int" name="entryCount" label="Entries" />
 508     <Field type="int" name="methodCount" label="Methods" />
 509     <Field type="int" name="adaptorCount" label="Adaptors" />
 510     <Field type="ulong" contentType="bytes" name="unallocatedCapacity" label="Unallocated" />
 511     <Field type="int" name="fullCount" label="Full Count" />
 512   </Event>
 513 
 514   <Event name="SafepointBegin" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint Begin" description="Safepointing begin" thread="true">
 515     <Field type="int" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
 516     <Field type="int" name="totalThreadCount" label="Total Threads" description="The total number of threads at the start of safe point" />
 517     <Field type="int" name="jniCriticalThreadCount" label="JNI Critical Threads" description="The number of threads in JNI critical sections" />
 518   </Event>
 519 
 520   <Event name="SafepointStateSynchronization" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint State Synchronization" description="Synchronize run state of threads"
 521     thread="true">
 522     <Field type="int" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
 523     <Field type="int" name="initialThreadCount" label="Initial Threads" description="The number of threads running at the beginning of state check" />
 524     <Field type="int" name="runningThreadCount" label="Running Threads" description="The number of threads still running" />
 525     <Field type="int" name="iterations" label="Iterations" description="Number of state check iterations" />
 526   </Event>
 527 
 528   <Event name="SafepointWaitBlocked" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint Wait Blocked" description="Safepointing begin waiting on running threads to block"
 529     thread="true">
 530     <Field type="int" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
 531     <Field type="int" name="runningThreadCount" label="Running Threads" description="The number running of threads wait for safe point" />
 532   </Event>
 533 
 534   <Event name="SafepointCleanup" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint Cleanup" description="Safepointing begin running cleanup tasks"
 535     thread="true">
 536     <Field type="int" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
 537   </Event>
 538 
 539   <Event name="SafepointCleanupTask" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint Cleanup Task" description="Safepointing begin running cleanup tasks"
 540     thread="true">
 541     <Field type="int" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
 542     <Field type="string" name="name" label="Task Name" description="The task name" />
 543   </Event>
 544 
 545   <Event name="SafepointEnd" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint End" description="Safepointing end" thread="true">
 546     <Field type="int" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
 547   </Event>
 548 
 549   <Event name="ExecuteVMOperation" category="Java Virtual Machine, Runtime" label="VM Operation" description="Execution of a VM Operation" thread="true">
 550     <Field type="VMOperationType" name="operation" label="Operation" />
 551     <Field type="boolean" name="safepoint" label="At Safepoint" description="If the operation occured at a safepoint" />
 552     <Field type="boolean" name="blocking" label="Caller Blocked" description="If the calling thread was blocked until the operation was complete" />
 553     <Field type="Thread" name="caller" label="Caller" transition="from"
 554       description="Thread requesting operation. If non-blocking, will be set to 0 indicating thread is unknown" />
 555     <Field type="int" name="safepointId" label="Safepoint Identifier" description="The safepoint (if any) under which this operation was completed"
 556       relation="SafepointId" />
 557   </Event>
 558 
 559   <Event name="Shutdown" category="Java Virtual Machine, Runtime" label="VM Shutdown" description="VM shutting down" thread="true" stackTrace="true"
 560     startTime="false">
 561     <Field type="string" name="reason" label="Reason" description="Reason for VM shutdown" />
 562   </Event>
 563 
 564   <Event name="ObjectAllocationInNewTLAB" category="Java Application" label="Allocation in new TLAB" description="Allocation in new Thread Local Allocation Buffer"
 565     thread="true" stackTrace="true" startTime="false">
 566     <Field type="Class" name="objectClass" label="Object Class" description="Class of allocated object" />
 567     <Field type="ulong" contentType="bytes" name="allocationSize" label="Allocation Size" />
 568     <Field type="ulong" contentType="bytes" name="tlabSize" label="TLAB Size" />
 569   </Event>
 570 
 571   <Event name="ObjectAllocationOutsideTLAB" category="Java Application" label="Allocation outside TLAB" description="Allocation outside Thread Local Allocation Buffers"
 572     thread="true" stackTrace="true" startTime="false">
 573     <Field type="Class" name="objectClass" label="Object Class" description="Class of allocated object" />
 574     <Field type="ulong" contentType="bytes" name="allocationSize" label="Allocation Size" />
 575   </Event>
 576 
 577   <Event name="OldObjectSample" category="Java Application" label="Old Object Sample" description="A potential memory leak" stackTrace="true" thread="true"
 578     startTime="false" cutoff="true">
 579     <Field type="Ticks" name="allocationTime" label="Allocation Time" />
 580     <Field type="OldObject" name="object" label="Object" />
 581     <Field type="int" name="arrayElements" label="Array Elements" description="If the object is an array, the number of elements, or -1 if it is not an array" />
 582     <Field type="OldObjectGcRoot" name="root" label="GC Root" />
 583   </Event>
 584 
 585   <Event name="DumpReason" category="Flight Recorder" label="Recording Reason" 
 586          description="Who requested the recording and why" 
 587          startTime="false">
 588     <Field type="string" name="reason" label="Reason" description="Reason for writing recording data to disk" />
 589     <Field type="int" name="recordingId" label="Recording Id" description="Id of the recording that triggered the dump, or -1 if it was not related to a recording" />
 590   </Event>
 591 
 592   <Event name="DataLoss" category="Flight Recorder" label="Data Loss" 
 593          description="Data could not be copied out from a buffer, typically because of contention"
 594          startTime="false">
 595     <Field type="ulong" contentType="bytes" name="amount" label="Amount" description="Amount lost data" />
 596     <Field type="ulong" contentType="bytes" name="total" label="Total" description="Total lost amount for thread" />
 597   </Event>
 598 
 599   <Event name="JVMInformation" category="Java Virtual Machine" label="JVM Information" 
 600          description="Description of JVM and the Java application"
 601          period="endChunk">
 602     <Field type="string" name="jvmName" label="JVM Name" />
 603     <Field type="string" name="jvmVersion" label="JVM Version" />
 604     <Field type="string" name="jvmArguments" label="JVM Command Line Arguments" />
 605     <Field type="string" name="jvmFlags" label="JVM Settings File Arguments" />
 606     <Field type="string" name="javaArguments" label="Java Application Arguments" />
 607     <Field type="long" contentType="epochmillis" name="jvmStartTime" label="JVM Start Time" />
 608   </Event>
 609 
 610   <Event name="OSInformation" category="Operating System" label="OS Information" period="endChunk">
 611     <Field type="string" name="osVersion" label="OS Version" />
 612   </Event>
 613 
 614   <Event name="InitialSystemProperty" category="Java Virtual Machine" label="Initial System Property" description="System Property at JVM start" period="endChunk">
 615     <Field type="string" name="key" label="Key" />
 616     <Field type="string" name="value" label="Value" />
 617   </Event>
 618 
 619   <Event name="InitialEnvironmentVariable" category="Operating System" label="Initial Environment Variable" period="endChunk">
 620     <Field type="string" name="key" label="Key" />
 621     <Field type="string" name="value" label="Value" />
 622   </Event>
 623 
 624   <Event name="SystemProcess" category="Operating System" label="System Process" period="endChunk">
 625     <Field type="string" name="pid" label="Process Identifier" />
 626     <Field type="string" name="commandLine" label="Command Line" />
 627   </Event>
 628 
 629   <Event name="CPUInformation" category="Operating System, Processor" label="CPU Information" period="endChunk">
 630     <Field type="string" name="cpu" label="Type" />
 631     <Field type="string" name="description" label="Description" />
 632     <Field type="uint" name="sockets" label="Sockets" />
 633     <Field type="uint" name="cores" label="Cores" />
 634     <Field type="uint" name="hwThreads" label="Hardware Threads" />
 635   </Event>
 636 
 637   <Event name="CPUTimeStampCounter" category="Operating System, Processor" label="CPU Time Stamp Counter" period="endChunk">
 638     <Field type="boolean" name="fastTimeEnabled" label="Fast Time" />
 639     <Field type="boolean" name="fastTimeAutoEnabled" label="Trusted Platform" />
 640     <Field type="long" name="osFrequency" label="OS Frequency Per Second" />
 641     <Field type="long" name="fastTimeFrequency" label="Fast Time Frequency per Second" />
 642   </Event>
 643 
 644   <Event name="CPULoad" category="Operating System, Processor" label="CPU Load" description="OS CPU Load" period="everyChunk">
 645     <Field type="float" contentType="percentage" name="jvmUser" label="JVM User" />
 646     <Field type="float" contentType="percentage" name="jvmSystem" label="JVM System" />
 647     <Field type="float" contentType="percentage" name="machineTotal" label="Machine Total" />
 648   </Event>
 649 
 650   <Event name="ThreadCPULoad" category="Operating System, Processor" label="Thread CPU Load" period="everyChunk" thread="true">
 651     <Field type="float" contentType="percentage" name="user" label="User Mode CPU Load" description="User mode thread CPU load" />
 652     <Field type="float" contentType="percentage" name="system" label="System Mode CPU Load" description="System mode thread CPU load" />
 653   </Event>
 654 
 655   <Event name="ThreadContextSwitchRate" category="Operating System, Processor" label="Thread Context Switch Rate" period="everyChunk">
 656     <Field type="float" name="switchRate" label="Switch Rate" description="Number of context switches per second" />
 657   </Event>
 658 
 659   <Event name="JavaThreadStatistics" category="Java Application, Statistics" label="Java Thread Statistics" period="everyChunk">
 660     <Field type="long" name="activeCount" label="Active Threads" description="Number of live active threads including both daemon and non-daemon threads" />
 661     <Field type="long" name="daemonCount" label="Daemon Threads" description="Number of live daemon threads" />
 662     <Field type="long" name="accumulatedCount" label="Accumulated Threads" description="Number of threads created and also started since JVM start" />
 663     <Field type="long" name="peakCount" label="Peak Threads" description="Peak live thread count since JVM start or when peak count was reset" />
 664   </Event>
 665 
 666   <Event name="ClassLoadingStatistics" category="Java Application, Statistics" label="Class Loading Statistics" period="everyChunk">
 667     <Field type="long" name="loadedClassCount" label="Loaded Class Count" description="Number of classes loaded since JVM start" />
 668     <Field type="long" name="unloadedClassCount" label="Unloaded Class Count" description="Number of classes unloaded since JVM start" />
 669   </Event>
 670 
 671   <Event name="ClassLoaderStatistics" category="Java Application, Statistics" label="Class Loader Statistics" period="everyChunk">
 672     <Field type="ClassLoader" name="classLoader" label="Class Loader" />
 673     <Field type="ClassLoader" name="parentClassLoader" label="Parent Class Loader" />
 674     <Field type="ulong" contentType="address" name="classLoaderData" label="ClassLoaderData pointer" description="Pointer to the ClassLoaderData structure in the JVM" />
 675     <Field type="long" name="classCount" label="Classes" description="Number of loaded classes" />
 676     <Field type="ulong" contentType="bytes" name="chunkSize" label="Total Chunk Size" description="Total size of all allocated metaspace chunks (each chunk has several blocks)" />
 677     <Field type="ulong" contentType="bytes" name="blockSize" label="Total Block Size" description="Total size of all allocated metaspace blocks (each chunk has several blocks)" />
 678     <Field type="long" name="anonymousClassCount" label="Unsafe Anonymous Classes" description="Number of loaded classes to support invokedynamic" />
 679     <Field type="ulong" contentType="bytes" name="anonymousChunkSize" label="Total Unsafe Anonymous Classes Chunk Size"
 680       description="Total size of all allocated metaspace chunks for anonymous classes (each chunk has several blocks)" />
 681     <Field type="ulong" contentType="bytes" name="anonymousBlockSize" label="Total Unsafe Anonymous Classes Block Size"
 682       description="Total size of all allocated metaspace blocks for anonymous classes (each chunk has several blocks)" />
 683   </Event>
 684 
 685   <Event name="ThreadAllocationStatistics" category="Java Application, Statistics" label="Thread Allocation Statistics" period="everyChunk">
 686     <Field type="ulong" contentType="bytes" name="allocated" label="Allocated" description="Approximate number of bytes allocated since thread start" />
 687     <Field type="Thread" name="thread" label="Thread" />
 688   </Event>
 689 
 690   <Event name="PhysicalMemory" category="Operating System, Memory" label="Physical Memory" description="OS Physical Memory" period="everyChunk">
 691     <Field type="ulong" contentType="bytes" name="totalSize" label="Total Size" description="Total amount of physical memory available to OS" />
 692     <Field type="ulong" contentType="bytes" name="usedSize" label="Used Size" description="Total amount of physical memory in use" />
 693   </Event>
 694 
 695   <Event name="ExecutionSample" category="Java Virtual Machine, Profiling" label="Method Profiling Sample" description="Snapshot of a threads state"
 696     period="everyChunk">
 697     <Field type="Thread" name="sampledThread" label="Thread" />
 698     <Field type="StackTrace" name="stackTrace" label="Stack Trace" />
 699     <Field type="ThreadState" name="state" label="Thread State" />
 700   </Event>
 701 
 702   <Event name="NativeMethodSample" category="Java Virtual Machine, Profiling" label="Method Profiling Sample Native" description="Snapshot of a threads state when in native"
 703     period="everyChunk">
 704     <Field type="Thread" name="sampledThread" label="Thread" />
 705     <Field type="StackTrace" name="stackTrace" label="Stack Trace" />
 706     <Field type="ThreadState" name="state" label="Thread State" />
 707   </Event>
 708 
 709   <Event name="ThreadDump" category="Java Virtual Machine, Runtime" label="Thread Dump" period="everyChunk">
 710     <Field type="string" name="result" label="Thread Dump" />
 711   </Event>
 712 
 713   <Event name="NativeLibrary" category="Java Virtual Machine, Runtime" label="Native Library" period="everyChunk">
 714     <Field type="string" name="name" label="Name" />
 715     <Field type="ulong" contentType="address" name="baseAddress" label="Base Address" description="Starting address of the module" />
 716     <Field type="ulong" contentType="address" name="topAddress" label="Top Address" description="Ending address of the module" />
 717   </Event>
 718 
 719   <Event name="ModuleRequire" category="Java Virtual Machine, Runtime, Modules" label="Module Require" thread="false" period="everyChunk"
 720     description="A directed edge representing a dependency">
 721     <Field type="Module" name="source" label="Source Module" />
 722     <Field type="Module" name="requiredModule" label="Required Module" />
 723   </Event>
 724 
 725   <Event name="ModuleExport" category="Java Virtual Machine, Runtime, Modules" label="Module Export" thread="false" period="everyChunk">
 726     <Field type="Package" name="exportedPackage" label="Exported Package" />
 727     <Field type="Module" name="targetModule" label="Target Module"
 728       description="Module to which the package is qualifiedly exported.
 729              If null, the package is unqualifiedly exported" />
 730   </Event>
 731 
 732   <Event name="CompilerStatistics" category="Java Virtual Machine, Compiler" label="Compiler Statistics" thread="false" period="everyChunk" startTime="false">
 733     <Field type="int" name="compileCount" label="Compiled Methods" />
 734     <Field type="int" name="bailoutCount" label="Bailouts" />
 735     <Field type="int" name="invalidatedCount" label="Invalidated Compilations" />
 736     <Field type="int" name="osrCompileCount" label="OSR Compilations" />
 737     <Field type="int" name="standardCompileCount" label="Standard Compilations" />
 738     <Field type="ulong" contentType="bytes" name="osrBytesCompiled" label="OSR Bytes Compiled" />
 739     <Field type="ulong" contentType="bytes" name="standardBytesCompiled" label="Standard Bytes Compiled" />
 740     <Field type="ulong" contentType="bytes" name="nmetodsSize" label="Compilation Resulting Size" />
 741     <Field type="ulong" contentType="bytes" name="nmetodCodeSize" label="Compilation Resulting Code Size" />
 742     <Field type="long" contentType="millis" name="peakTimeSpent" label="Peak Time" />
 743     <Field type="long" contentType="millis" name="totalTimeSpent" label="Total time" />
 744   </Event>
 745 
 746   <Event name="CompilerConfiguration" category="Java Virtual Machine, Compiler" label="Compiler Configuration" thread="false" period="endChunk" startTime="false">
 747     <Field type="int" name="threadCount" label="Thread Count" />
 748     <Field type="boolean" name="tieredCompilation" label="Tiered Compilation" />
 749   </Event>
 750 
 751   <Event name="CodeCacheStatistics" category="Java Virtual Machine, Code Cache" label="Code Cache Statistics" thread="false" period="everyChunk" startTime="false">
 752     <Field type="CodeBlobType" name="codeBlobType" label="Code Heap" />
 753     <Field type="ulong" contentType="address" name="startAddress" label="Start Address" />
 754     <Field type="ulong" contentType="address" name="reservedTopAddress" label="Reserved Top" />
 755     <Field type="int" name="entryCount" label="Entries" />
 756     <Field type="int" name="methodCount" label="Methods" />
 757     <Field type="int" name="adaptorCount" label="Adaptors" />
 758     <Field type="ulong" contentType="bytes" name="unallocatedCapacity" label="Unallocated" />
 759     <Field type="int" name="fullCount" label="Full Count" />
 760   </Event>
 761 
 762   <Event name="CodeCacheConfiguration" category="Java Virtual Machine, Code Cache" label="Code Cache Configuration" thread="false" period="endChunk" startTime="false">
 763     <Field type="ulong" contentType="bytes" name="initialSize" label="Initial Size" />
 764     <Field type="ulong" contentType="bytes" name="reservedSize" label="Reserved Size" />
 765     <Field type="ulong" contentType="bytes" name="nonNMethodSize" label="Non-nmethod Size" />
 766     <Field type="ulong" contentType="bytes" name="profiledSize" label="Profiled Size" />
 767     <Field type="ulong" contentType="bytes" name="nonProfiledSize" label="Non-profiled Size" />
 768     <Field type="ulong" contentType="bytes" name="expansionSize" label="Expansion size" />
 769     <Field type="ulong" contentType="bytes" name="minBlockLength" label="Minimum Block Length" />
 770     <Field type="ulong" contentType="address" name="startAddress" label="Start Address" />
 771     <Field type="ulong" contentType="address" name="reservedTopAddress" label="Reserved Top" />
 772   </Event>
 773 
 774   <Event name="CodeSweeperStatistics" category="Java Virtual Machine, Code Sweeper" label="Code Sweeper Statistics" thread="false" period="everyChunk" startTime="false">
 775     <Field type="int" name="sweepCount" label="Sweeps" />
 776     <Field type="int" name="methodReclaimedCount" label="Methods Reclaimed" />
 777     <Field type="Tickspan" name="totalSweepTime" label="Time Spent Sweeping" />
 778     <Field type="Tickspan" name="peakFractionTime" label="Peak Time Fraction Sweep" />
 779     <Field type="Tickspan" name="peakSweepTime" label="Peak Time Full Sweep" />
 780   </Event>
 781 
 782   <Event name="CodeSweeperConfiguration" category="Java Virtual Machine, Code Sweeper" label="Code Sweeper Configuration" thread="false" period="endChunk" startTime="false">
 783     <Field type="boolean" name="sweeperEnabled" label="Code Sweeper Enabled" />
 784     <Field type="boolean" name="flushingEnabled" label="Code Cache Flushing Enabled" />
 785   </Event>
 786 
 787   <Event name="IntFlag" category="Java Virtual Machine, Flag" period="endChunk" label="Int Flag">
 788     <Field type="string" name="name" label="Name" />
 789     <Field type="int" name="value" label="Value" />
 790     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 791   </Event>
 792 
 793   <Event name="UnsignedIntFlag" category="Java Virtual Machine, Flag" period="endChunk" label="Unsigned Int Flag">
 794     <Field type="string" name="name" label="Name" />
 795     <Field type="uint" name="value" label="Value" />
 796     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 797   </Event>
 798 
 799   <Event name="LongFlag" category="Java Virtual Machine, Flag" period="endChunk" label="Long Flag">
 800     <Field type="string" name="name" label="Name" />
 801     <Field type="long" name="value" label="Value" />
 802     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 803   </Event>
 804 
 805   <Event name="UnsignedLongFlag" category="Java Virtual Machine, Flag" period="endChunk" label="Unsigned Long Flag">
 806     <Field type="string" name="name" label="Name" />
 807     <Field type="ulong" name="value" label="Value" />
 808     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 809   </Event>
 810 
 811   <Event name="DoubleFlag" category="Java Virtual Machine, Flag" period="endChunk" label="Double Flag">
 812     <Field type="string" name="name" label="Name" />
 813     <Field type="double" name="value" label="Value" />
 814     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 815   </Event>
 816 
 817   <Event name="BooleanFlag" category="Java Virtual Machine, Flag" period="endChunk" label="Boolean Flag">
 818     <Field type="string" name="name" label="Name" />
 819     <Field type="boolean" name="value" label="Value" />
 820     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 821   </Event>
 822 
 823   <Event name="StringFlag" category="Java Virtual Machine, Flag" period="endChunk" label="String Flag">
 824     <Field type="string" name="name" label="Name" />
 825     <Field type="string" name="value" label="Value" />
 826     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 827   </Event>
 828 
 829   <Event name="ObjectCount" category="Java Virtual Machine, GC, Detailed" startTime="false" period="everyChunk" label="Object Count">
 830     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 831     <Field type="Class" name="objectClass" label="Object Class" />
 832     <Field type="long" name="count" label="Count" />
 833     <Field type="ulong" contentType="bytes" name="totalSize" label="Total Size" />
 834   </Event>
 835 
 836   <Event name="G1HeapRegionInformation" category="Java Virtual Machine, GC, Detailed" label="G1 Heap Region Information" description="Information about a specific heap region in the G1 GC"
 837     period="everyChunk">
 838     <Field type="uint" name="index" label="Index" />
 839     <Field type="G1HeapRegionType" name="type" label="Type" />
 840     <Field type="ulong" contentType="address" name="start" label="Start" />
 841     <Field type="ulong" contentType="bytes" name="used" label="Used" />
 842   </Event>
 843 
 844   <Event name="GCConfiguration" category="Java Virtual Machine, GC, Configuration" label="GC Configuration" description="The configuration of the garbage collector"
 845     period="endChunk">
 846     <Field type="GCName" name="youngCollector" label="Young Garbage Collector" description="The garbage collector used for the young generation" />
 847     <Field type="GCName" name="oldCollector" label="Old Garbage Collector" description="The garbage collector used for the old generation" />
 848     <Field type="uint" name="parallelGCThreads" label="Parallel GC Threads" description="Number of parallel threads to use for garbage collection" />
 849     <Field type="uint" name="concurrentGCThreads" label="Concurrent GC Threads" description="Number of concurrent threads to use for garbage collection" />
 850     <Field type="boolean" name="usesDynamicGCThreads" label="Uses Dynamic GC Threads" description="Whether a dynamic number of GC threads are used or not" />
 851     <Field type="boolean" name="isExplicitGCConcurrent" label="Concurrent Explicit GC" description="Whether System.gc() is concurrent or not" />
 852     <Field type="boolean" name="isExplicitGCDisabled" label="Disabled Explicit GC" description="Whether System.gc() will cause a garbage collection or not" />
 853     <Field type="long" contentType="millis" name="pauseTarget" label="Pause Target" description="Target for GC pauses" />
 854     <Field type="uint" name="gcTimeRatio" label="GC Time Ratio" description="Target for runtime vs garbage collection time" />
 855   </Event>
 856 
 857   <Event name="GCSurvivorConfiguration" category="Java Virtual Machine, GC, Configuration" label="GC Survivor Configuration"
 858     description="The configuration of the survivors of garbage collection" period="endChunk">
 859     <Field type="ubyte" name="maxTenuringThreshold" label="Maximum Tenuring Threshold" description="Upper limit for the age of how old objects to keep in the survivor area" />
 860     <Field type="ubyte" name="initialTenuringThreshold" label="Initial Tenuring Threshold" description="Initial age limit for how old objects to keep in survivor area" />
 861   </Event>
 862 
 863   <Event name="GCTLABConfiguration" category="Java Virtual Machine, GC, Configuration" label="TLAB Configuration"
 864     description="The configuration of the Thread Local Allocation Buffers (TLABs)" period="endChunk">
 865     <Field type="boolean" name="usesTLABs" label="TLABs Used" description="If Thread Local Allocation Buffers (TLABs) are in use" />
 866     <Field type="ulong" contentType="bytes" name="minTLABSize" label="Minimum TLAB Size" />
 867     <Field type="ulong" contentType="bytes" name="tlabRefillWasteLimit" label="TLAB Refill Waste Limit" />
 868   </Event>
 869 
 870   <Event name="GCHeapConfiguration" category="Java Virtual Machine, GC, Configuration" label="GC Heap Configuration" description="The configuration of the garbage collected heap"
 871     period="endChunk">
 872     <Field type="ulong" contentType="bytes" name="minSize" label="Minimum Heap Size" />
 873     <Field type="ulong" contentType="bytes" name="maxSize" label="Maximum Heap Size" />
 874     <Field type="ulong" contentType="bytes" name="initialSize" label="Initial Heap Size" />
 875     <Field type="boolean" name="usesCompressedOops" label="If Compressed Oops Are Used" description="If compressed Oops (Ordinary Object Pointers) are enabled" />
 876     <Field type="NarrowOopMode" name="compressedOopsMode" label="Compressed Oops Mode" description="The kind of compressed oops being used" />
 877     <Field type="ulong" contentType="bytes" name="objectAlignment" label="Object Alignment" description="Object alignment (in bytes) on the heap" />
 878     <Field type="ubyte" name="heapAddressBits" label="Heap Address Size" description="Heap Address Size (in bits)" />
 879   </Event>
 880 
 881   <Event name="YoungGenerationConfiguration" category="Java Virtual Machine, GC, Configuration" label="Young Generation Configuration"
 882     description="The configuration of the young generation of the garbage collected heap" period="endChunk">
 883     <Field type="ulong" contentType="bytes" name="minSize" label="Minimum Young Generation Size" />
 884     <Field type="ulong" contentType="bytes" name="maxSize" label="Maximum Young Generation Size" />
 885     <Field type="uint" name="newRatio" label="New Ratio" description="The size of the young generation relative to the tenured generation" />
 886   </Event>
 887 
 888   <Type name="Thread" label="Thread">
 889     <Field type="string" name="osName" label="OS Thread Name" />
 890     <Field type="long" name="osThreadId" label="OS Thread Id" />
 891     <Field type="string" name="javaName" label="Java Thread Name" />
 892     <Field type="long" name="javaThreadId" label="Java Thread Id" />
 893     <Field type="ThreadGroup" name="group" label="Java Thread Group" />
 894   </Type>
 895 
 896   <Type name="ThreadGroup" label="Thread Group">
 897     <Field type="ThreadGroup" name="parent" label="Parent" />
 898     <Field type="string" name="name" label="Name" />
 899   </Type>
 900 
 901   <Type name="Class" label="Java Class">
 902     <Field type="ClassLoader" name="classLoader" label="Class Loader" />
 903     <Field type="Symbol" name="name" label="Name" />
 904     <Field type="Package" name="package" label="Package" />
 905     <Field type="int" name="modifiers" label="Access Modifiers" />
 906   </Type>
 907 
 908   <Type name="ClassLoader" label="Java Class Loader">
 909     <Field type="Class" name="type" label="Type" />
 910     <Field type="Symbol" name="name" label="Name" />
 911   </Type>
 912 
 913   <Type name="Method" label="Java Method">
 914     <Field type="Class" name="type" label="Type" />
 915     <Field type="Symbol" name="name" label="Name" />
 916     <Field type="Symbol" name="descriptor" label="Descriptor" />
 917     <Field type="int" name="modifiers" label="Access Modifiers" />
 918     <Field type="boolean" name="hidden" label="Hidden" />
 919   </Type>
 920 
 921   <Type name="Symbol" label="Symbol">
 922     <Field type="string" name="string" label="String" />
 923   </Type>
 924 
 925   <Type name="ThreadState" label="Java Thread State">
 926     <Field type="string" name="name" label="Name" />
 927   </Type>
 928 
 929   <Type name="GCName" label="GC Name">
 930     <Field type="string" name="name" label="Name" />
 931   </Type>
 932 
 933   <Type name="GCCause" label="GC Cause">
 934     <Field type="string" name="cause" label="Cause" />
 935   </Type>
 936 
 937   <Type name="GCWhen" label="GC When">
 938     <Field type="string" name="when" label="When" />
 939   </Type>
 940 
 941   <Type name="G1HeapRegionType" label="G1 Heap Region Type">
 942     <Field type="string" name="type" label="Type" />
 943   </Type>
 944 
 945   <Type name="G1YCType" label="G1 YC Type">
 946     <Field type="string" name="type" label="Type" />
 947   </Type>
 948 
 949   <Type name="GCThresholdUpdater" label="GC Threshold Updater">
 950     <Field type="string" name="updater" label="Updater" />
 951   </Type>
 952 
 953   <Type name="ReferenceType" label="Reference Type">
 954     <Field type="string" name="type" label="Type" />
 955   </Type>
 956 
 957   <Type name="MetadataType" label="Metadata Type">
 958     <Field type="string" name="type" label="Type" />
 959   </Type>
 960 
 961   <Type name="MetaspaceObjectType" label="Metaspace Object Type">
 962     <Field type="string" name="type" label="Type" />
 963   </Type>
 964 
 965   <Type name="NarrowOopMode" label="Narrow Oop Mode">
 966     <Field type="string" name="mode" label="Mode" />
 967   </Type>
 968 
 969   <Type name="VMOperationType" label="VM Operation Type">
 970     <Field type="string" name="type" label="Type" />
 971   </Type>
 972 
 973   <Type name="CompilerPhaseType" label="Compiler Phase Type">
 974     <Field type="string" name="phase" label="Phase" />
 975   </Type>
 976 
 977   <Type name="FlagValueOrigin" label="Flag Value Origin">
 978     <Field type="string" name="origin" label="Origin" />
 979   </Type>
 980 
 981   <Type name="CodeBlobType" label="Code Blob Type">
 982     <Field type="string" name="type" label="Type" />
 983   </Type>
 984 
 985   <Type name="InflateCause" label="Inflation Cause">
 986     <Field type="string" name="cause" label="Cause" />
 987   </Type>
 988 
 989   <Type name="Module" label="Module">
 990     <Field type="Symbol" name="name" label="Name" />
 991     <Field type="Symbol" name="version" label="Version" />
 992     <Field type="Symbol" name="location" label="Location" />
 993     <Field type="ClassLoader" name="classLoader" label="Class Loader" />
 994   </Type>
 995 
 996   <Type name="Package" label="Package">
 997     <Field type="Symbol" name="name" label="Name" />
 998     <Field type="Module" name="module" label="Module" />
 999     <Field type="boolean" name="exported" label="Exported" />
1000   </Type>
1001 
1002   <Type name="StackTrace" label="Stacktrace">
1003     <Field type="boolean" name="truncated" label="Truncated" />
1004     <Field type="StackFrame" array="true" struct="true" name="frames" label="Stack Frames" />
1005   </Type>
1006 
1007   <Type name="FrameType" label="Frame type">
1008     <Field type="string" name="description" label="Description" />
1009   </Type>
1010 
1011   <Type name="OldObjectRootSystem" label="GC Root System">
1012     <Field type="string" name="system" label="System" />
1013   </Type>
1014 
1015   <Type name="OldObjectRootType" label="GC Root Type">
1016     <Field type="string" name="type" label="Type" />
1017   </Type>
1018 
1019   <Type name="OldObjectGcRoot" label="GC Root">
1020     <Field type="string" name="description" label="Root Description" description="Root information" />
1021     <Field type="OldObjectRootSystem" name="system" label="System" description="The subsystem of origin for the root" />
1022     <Field type="OldObjectRootType" name="type" label="Type" description="The root type" />
1023   </Type>
1024 
1025   <Type name="OldObjectArray" label="Old Object Array">
1026     <Field type="int" name="size" label="Array Size" description="Size of array" />
1027     <Field type="int" name="index" label="Index" description="Index in the array" />
1028   </Type>
1029 
1030   <Type name="OldObjectField" label="Old Object Field">
1031     <Field type="string" name="name" label="Field" description="Name of field" />
1032     <Field type="short" name="modifiers" label="Field Modifiers" description="Field modifiers" />
1033   </Type>
1034 
1035   <Type name="OldObject" label="Old Object">
1036     <Field type="ulong" contentType="address" name="address" label="Memory Address" />
1037     <Field type="Class" name="type" label="Java Class" />
1038     <Field type="string" name="description" label="Object Description" description="Object description" />
1039     <Field type="Reference" name="referrer" label="Referrer Object" description="Object referencing this object" />
1040   </Type>
1041 
1042   <Type name="Reference" label="Reference">
1043     <Field type="OldObjectArray" name="array" label="Array Information" description="Array or null if it is not an array" />
1044     <Field type="OldObjectField" name="field" label="Field Information" description="Field or null if it is an array" />
1045     <Field type="OldObject" name="object" label="Object" description="Object holder for this reference" />
1046     <Field type="int" name="skip" label="Skip value" description="The object is this many hops away" />
1047   </Type>
1048 
1049   <Type name="StackFrame">
1050     <Field type="Method" name="method" label="Java Method" />
1051     <Field type="int" name="lineNumber" label="Line Number" />
1052     <Field type="int" name="bytecodeIndex" label="Bytecode Index" />
1053     <Field type="FrameType" name="type" label="Frame Type" />
1054   </Type>
1055  
1056   <Relation name="JavaMonitorAddress"/>
1057   <Relation name="SafepointId"/>
1058   <Relation name="GcId"/>
1059   <Relation name="CompileId" />
1060   <Relation name="SweepId"/>
1061  
1062   <XmlType name="Package" parameterType="const PackageEntry*" fieldType="const PackageEntry*"/> 
1063   <XmlType name="Class" javaType="java.lang.Class" parameterType="const Klass*" fieldType="const Klass*"/> 
1064   <XmlType name="Module"  parameterType="const ModuleEntry*" fieldType="const ModuleEntry*"/> 
1065   <XmlType name="ClassLoader" parameterType="const ClassLoaderData*" fieldType="const ClassLoaderData*"/> 
1066   <XmlType name="Method" parameterType="const Method*" fieldType="const Method*"/> 
1067   <XmlType name="Thread" javaType="java.lang.Thread" parameterType="u8" fieldType="u8"/> 
1068   <XmlType name="Tickspan" contentType="tickspan" javaType="long" parameterType="const Tickspan&amp;" fieldType="Tickspan"/> 
1069   <XmlType name="Ticks" contentType="tickstamp" javaType="long" parameterType="const Ticks&amp;" fieldType="Ticks"/> 
1070   <XmlType name="ulong" javaType="long" unsigned="true" parameterType="u8" fieldType="u8"/> 
1071   <XmlType name="uint" javaType="int" unsigned="true" parameterType="unsigned" fieldType="unsigned"/> 
1072   <XmlType name="ushort" javaType="short" unsigned="true" parameterType="u2" fieldType="u2"/> 
1073   <XmlType name="ubyte" javaType="byte" unsigned="true" parameterType="u1" fieldType="u1"/> 
1074   <XmlType name="long" javaType="long" parameterType="s8" fieldType="s8"/> 
1075   <XmlType name="int" javaType="int" parameterType="s4" fieldType="s4"/> 
1076   <XmlType name="short" javaType="short" parameterType="s2" fieldType="s2"/> 
1077   <XmlType name="byte" javaType="byte"  parameterType="s1" fieldType="s1"/> 
1078   <XmlType name="double" javaType="double" parameterType="double" fieldType="double"/> 
1079   <XmlType name="float" javaType="float"  parameterType="float" fieldType="float"/> 
1080   <XmlType name="boolean" javaType="boolean" parameterType="bool" fieldType="bool"/> 
1081   <XmlType name="char" javaType="char" parameterType="char" fieldType="char"/> 
1082   <XmlType name="string" javaType="java.lang.String" parameterType="const char*" fieldType="const char*"/> 
1083  
1084   <XmlContentType name="bytes" annotationType="jdk.jfr.DataAmount" annotationValue="BYTES" />
1085   <XmlContentType name="tickstamp" annotationType="jdk.jfr.Timestamp" annotationValue="TICKS" />
1086   <XmlContentType name="epochmillis" annotationType="jdk.jfr.Timestamp" annotationValue="MILLISECONDS_SINCE_EPOCH" />
1087   <XmlContentType name="tickspan" annotationType="jdk.jfr.Timespan" annotationValue="TICKS" />
1088   <XmlContentType name="address" annotationType="jdk.jfr.MemoryAddress" />
1089   <XmlContentType name="percentage" annotationType="jdk.jfr.Percentage" />
1090   <XmlContentType name="millis" annotationType="jdk.jfr.Timespan" annotationValue="MILLISECONDS" />
1091 
1092 </Metadata>