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   2 
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   5  DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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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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  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="nanos" name="timeout" label="Park Timeout" />
  44     <Field type="long" contentType="epochmillis" name="until" label="Park Until" />
  45     <Field type="ulong" contentType="address" name="address" label="Address of Object Parked" relation="JavaMonitorAddress" />
  46   </Event>
  47 
  48   <Event name="JavaMonitorEnter" category="Java Application" label="Java Monitor Blocked" thread="true" stackTrace="true">
  49     <Field type="Class" name="monitorClass" label="Monitor Class" />
  50     <Field type="Thread" name="previousOwner" label="Previous Monitor Owner" />
  51     <Field type="ulong" contentType="address" name="address" label="Monitor Address" relation="JavaMonitorAddress" />
  52   </Event>
  53 
  54   <Event name="JavaMonitorWait" category="Java Application" label="Java Monitor Wait" description="Waiting on a Java monitor" thread="true" stackTrace="true">
  55     <Field type="Class" name="monitorClass" label="Monitor Class" description="Class of object waited on" />
  56     <Field type="Thread" name="notifier" label="Notifier Thread" description="Notifying Thread" />
  57     <Field type="long" contentType="millis" name="timeout" label="Timeout" description="Maximum wait time" />
  58     <Field type="boolean" name="timedOut" label="Timed Out" description="Wait has been timed out" />
  59     <Field type="ulong" contentType="address" name="address" label="Monitor Address" description="Address of object waited on" relation="JavaMonitorAddress" />
  60   </Event>
  61 
  62   <Event name="JavaMonitorInflate" category="Java Application" label="Java Monitor Inflated" thread="true" stackTrace="true">
  63     <Field type="Class" name="monitorClass" label="Monitor Class" />
  64     <Field type="ulong" contentType="address" name="address" label="Monitor Address" relation="JavaMonitorAddress" />
  65     <Field type="InflateCause" name="cause" label="Monitor Inflation Cause" description="Cause of inflation" />
  66   </Event>
  67 
  68   <Event name="BiasedLockRevocation" category="Java Virtual Machine, Runtime" label="Biased Lock Revocation" description="Revoked bias of object" thread="true"
  69     stackTrace="true">
  70     <Field type="Class" name="lockClass" label="Lock Class" description="Class of object whose biased lock was revoked" />
  71     <Field type="ulong" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
  72     <Field type="Thread" name="previousOwner" label="Previous Owner" description="Thread owning the bias before revocation" />
  73   </Event>
  74 
  75   <Event name="BiasedLockSelfRevocation" category="Java Virtual Machine, Runtime" label="Biased Lock Self Revocation" description="Revoked bias of object biased towards own thread"
  76     thread="true" stackTrace="true">
  77     <Field type="Class" name="lockClass" label="Lock Class" description="Class of object whose biased lock was revoked" />
  78   </Event>
  79 
  80   <Event name="BiasedLockClassRevocation" category="Java Virtual Machine, Runtime" label="Biased Lock Class Revocation" description="Revoked biases for all instances of a class"
  81     thread="true" stackTrace="true">
  82     <Field type="Class" name="revokedClass" label="Revoked Class" description="Class whose biased locks were revoked" />
  83     <Field type="boolean" name="disableBiasing" label="Disable Further Biasing" description="Whether further biasing for instances of this class will be allowed" />
  84     <Field type="ulong" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
  85   </Event>
  86 
  87   <Event name="ReservedStackActivation" category="Java Virtual Machine, Runtime" label="Reserved Stack Activation"
  88     description="Activation of Reserved Stack Area caused by stack overflow with ReservedStackAccess annotated method in call stack" thread="true" stackTrace="true"
  89     startTime="false">
  90     <Field type="Method" name="method" label="Java Method" />
  91   </Event>
  92 
  93   <Event name="ClassLoad" category="Java Virtual Machine, Class Loading" label="Class Load" thread="true" stackTrace="true">
  94     <Field type="Class" name="loadedClass" label="Loaded Class" />
  95     <Field type="ClassLoader" name="definingClassLoader" label="Defining Class Loader" />
  96     <Field type="ClassLoader" name="initiatingClassLoader" label="Initiating Class Loader" />
  97   </Event>
  98 
  99   <Event name="ClassDefine" category="Java Virtual Machine, Class Loading" label="Class Define" thread="true" stackTrace="true" startTime="false">
 100     <Field type="Class" name="definedClass" label="Defined Class" />
 101     <Field type="ClassLoader" name="definingClassLoader" label="Defining Class Loader" />
 102   </Event>
 103 
 104   <Event name="ClassUnload" category="Java Virtual Machine, Class Loading" label="Class Unload" thread="true" startTime="false">
 105     <Field type="Class" name="unloadedClass" label="Unloaded Class" />
 106     <Field type="ClassLoader" name="definingClassLoader" label="Defining Class Loader" />
 107   </Event>
 108 
 109   <Event name="IntFlagChanged" category="Java Virtual Machine, Flag" label="Int Flag Changed" startTime="false">
 110     <Field type="string" name="name" label="Name" />
 111     <Field type="int" name="oldValue" label="Old Value" />
 112     <Field type="int" name="newValue" label="New Value" />
 113     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 114   </Event>
 115 
 116   <Event name="UnsignedIntFlagChanged" category="Java Virtual Machine, Flag" label="Unsigned Int Flag Changed" startTime="false">
 117     <Field type="string" name="name" label="Name" />
 118     <Field type="uint" name="oldValue" label="Old Value" />
 119     <Field type="uint" name="newValue" label="New Value" />
 120     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 121   </Event>
 122 
 123   <Event name="LongFlagChanged" category="Java Virtual Machine, Flag" label="Long Flag Changed" startTime="false">
 124     <Field type="string" name="name" label="Name" />
 125     <Field type="long" name="oldValue" label="Old Value" />
 126     <Field type="long" name="newValue" label="New Value" />
 127     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 128   </Event>
 129 
 130   <Event name="UnsignedLongFlagChanged" category="Java Virtual Machine, Flag" label="Unsigned Long Flag Changed" startTime="false">
 131     <Field type="string" name="name" label="Name" />
 132     <Field type="ulong" name="oldValue" label="Old Value" />
 133     <Field type="ulong" name="newValue" label="New Value" />
 134     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 135   </Event>
 136 
 137   <Event name="DoubleFlagChanged" category="Java Virtual Machine, Flag" label="Double Flag Changed" startTime="false">
 138     <Field type="string" name="name" label="Name" />
 139     <Field type="double" name="oldValue" label="Old Value" />
 140     <Field type="double" name="newValue" label="New Value" />
 141     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 142   </Event>
 143 
 144   <Event name="BooleanFlagChanged" category="Java Virtual Machine, Flag" label="Boolean Flag Changed" startTime="false">
 145     <Field type="string" name="name" label="Name" />
 146     <Field type="boolean" name="oldValue" label="Old Value" />
 147     <Field type="boolean" name="newValue" label="New Value" />
 148     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 149   </Event>
 150 
 151   <Event name="StringFlagChanged" category="Java Virtual Machine, Flag" label="String Flag Changed" startTime="false">
 152     <Field type="string" name="name" label="Name" />
 153     <Field type="string" name="oldValue" label="Old Value" />
 154     <Field type="string" name="newValue" label="New Value" />
 155     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 156   </Event>
 157  
 158   <Type name="VirtualSpace">
 159     <Field type="ulong" contentType="address" name="start" label="Start Address" description="Start address of the virtual space" />
 160     <Field type="ulong" contentType="address" name="committedEnd" label="Committed End Address" description="End address of the committed memory for the virtual space" />
 161     <Field type="ulong" contentType="bytes" name="committedSize" label="Committed Size" description="Size of the committed memory for the virtual space" />
 162     <Field type="ulong" contentType="address" name="reservedEnd" label="Reserved End Address" description="End address of the reserved memory for the virtual space" />
 163     <Field type="ulong" contentType="bytes" name="reservedSize" label="Reserved Size" description="Size of the reserved memory for the virtual space" />
 164   </Type>
 165   
 166   <Type name="ObjectSpace">
 167     <Field type="ulong" contentType="address" name="start" label="Start Address" description="Start address of the space" />
 168     <Field type="ulong" contentType="address" name="end" label="End Address" description="End address of the space" />
 169     <Field type="ulong" contentType="bytes" name="used" label="Used" description="Bytes allocated by objects in the space" />
 170     <Field type="ulong" contentType="bytes" name="size" label="Size" description="Size of the space" />
 171   </Type>
 172   
 173   <Event name="GCHeapSummary" category="Java Virtual Machine, GC, Heap" label="Heap Summary" startTime="false">
 174     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 175     <Field type="GCWhen" name="when" label="When" />
 176     <Field type="VirtualSpace" struct="true" name="heapSpace" label="Heap Space" />
 177     <Field type="ulong" contentType="bytes" name="heapUsed" label="Heap Used" description="Bytes allocated by objects in the heap" />
 178   </Event>
 179  
 180   <Type name="MetaspaceSizes">
 181     <Field type="ulong" contentType="bytes" name="committed" label="Committed" description="Committed memory for this space" />
 182     <Field type="ulong" contentType="bytes" name="used" label="Used" description="Bytes allocated by objects in the space" />
 183     <Field type="ulong" contentType="bytes" name="reserved" label="Reserved" description="Reserved memory for this space" />
 184   </Type>
 185  
 186   <Event name="MetaspaceSummary" category="Java Virtual Machine, GC, Heap" label="Metaspace Summary" startTime="false">
 187     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 188     <Field type="GCWhen" name="when" label="When" />
 189     <Field type="ulong" contentType="bytes" name="gcThreshold" label="GC Threshold" />
 190     <Field type="MetaspaceSizes" struct="true" name="metaspace" label="Total" />
 191     <Field type="MetaspaceSizes" struct="true" name="dataSpace" label="Data" />
 192     <Field type="MetaspaceSizes" struct="true" name="classSpace" label="Class" />
 193   </Event>
 194 
 195   <Event name="MetaspaceGCThreshold" category="Java Virtual Machine, GC, Metaspace" label="Metaspace GC Threshold" startTime="false">
 196     <Field type="ulong" contentType="bytes" name="oldValue" label="Old Value" />
 197     <Field type="ulong" contentType="bytes" name="newValue" label="New Value" />
 198     <Field type="GCThresholdUpdater" name="updater" label="Updater" />
 199   </Event>
 200 
 201   <Event name="MetaspaceAllocationFailure" category="Java Virtual Machine, GC, Metaspace" label="Metaspace Allocation Failure" startTime="false"
 202     stackTrace="true">
 203     <Field type="ClassLoader" name="classLoader" label="Class Loader" />
 204     <Field type="boolean" name="unsafeAnonymousClassLoader" label="Unsafe Anonymous Class Loader" />
 205     <Field type="ulong" contentType="bytes" name="size" label="Size" />
 206     <Field type="MetadataType" name="metadataType" label="Metadata Type" />
 207     <Field type="MetaspaceObjectType" name="metaspaceObjectType" label="Metaspace Object Type" />
 208   </Event>
 209 
 210   <Event name="MetaspaceOOM" category="Java Virtual Machine, GC, Metaspace" label="Metaspace Out of Memory" startTime="false" stackTrace="true">
 211     <Field type="ClassLoader" name="classLoader" label="Class Loader" />
 212     <Field type="boolean" name="unsafeAnonymousClassLoader" label="Unsafe Anonymous Class Loader" />
 213     <Field type="ulong" contentType="bytes" name="size" label="Size" />
 214     <Field type="MetadataType" name="metadataType" label="Metadata Type" />
 215     <Field type="MetaspaceObjectType" name="metaspaceObjectType" label="Metaspace Object Type" />
 216   </Event>
 217 
 218   <Event name="MetaspaceChunkFreeListSummary" category="Java Virtual Machine, GC, Metaspace" label="Metaspace Chunk Free List Summary" startTime="false">
 219     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 220     <Field type="GCWhen" name="when" label="When" />
 221     <Field type="MetadataType" name="metadataType" label="Metadata Type" />
 222     <Field type="ulong" name="specializedChunks" label="Specialized Chunks" />
 223     <Field type="ulong" contentType="bytes" name="specializedChunksTotalSize" label="Specialized Chunks Total Size" />
 224     <Field type="ulong" name="smallChunks" label="Small Chunks" />
 225     <Field type="ulong" contentType="bytes" name="smallChunksTotalSize" label="Small Chunks Total Size" />
 226     <Field type="ulong" name="mediumChunks" label="Medium Chunks" />
 227     <Field type="ulong" contentType="bytes" name="mediumChunksTotalSize" label="Medium Chunks Total Size" />
 228     <Field type="ulong" name="humongousChunks" label="Humongous Chunks" />
 229     <Field type="ulong" contentType="bytes" name="humongousChunksTotalSize" label="Humongous Chunks Total Size" />
 230   </Event>
 231 
 232   <Event name="PSHeapSummary" category="Java Virtual Machine, GC, Heap" label="Parallel Scavenge Heap Summary" startTime="false">
 233     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 234     <Field type="GCWhen" name="when" label="When" />
 235     <Field type="VirtualSpace" struct="true" name="oldSpace" label="Old Space" />
 236     <Field type="ObjectSpace" struct="true" name="oldObjectSpace" label="Old Object Space" />
 237     <Field type="VirtualSpace" struct="true" name="youngSpace" label="Young Space" />
 238     <Field type="ObjectSpace" struct="true" name="edenSpace" label="Eden Space" />
 239     <Field type="ObjectSpace" struct="true" name="fromSpace" label="From Space" />
 240     <Field type="ObjectSpace" struct="true" name="toSpace" label="To Space" />
 241   </Event>
 242 
 243   <Event name="G1HeapSummary" category="Java Virtual Machine, GC, Heap" label="G1 Heap Summary" startTime="false">
 244     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 245     <Field type="GCWhen" name="when" label="When" />
 246     <Field type="ulong" contentType="bytes" name="edenUsedSize" label="Eden Used Size" />
 247     <Field type="ulong" contentType="bytes" name="edenTotalSize" label="Eden Total Size" />
 248     <Field type="ulong" contentType="bytes" name="survivorUsedSize" label="Survivor Used Size" />
 249     <Field type="uint" name="numberOfRegions" label="Number of Regions" />
 250   </Event>
 251 
 252   <Event name="GarbageCollection" category="Java Virtual Machine, GC, Collector" label="Garbage Collection" description="Garbage collection performed by the JVM">
 253     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 254     <Field type="GCName" name="name" label="Name" description="The name of the Garbage Collector" />
 255     <Field type="GCCause" name="cause" label="Cause" description="The reason for triggering this Garbage Collection" />
 256     <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" />
 257     <Field type="Tickspan" name="longestPause" label="Longest Pause" description="Longest individual pause during the garbage collection" />
 258   </Event>
 259 
 260   <Event name="ParallelOldGarbageCollection" category="Java Virtual Machine, GC, Collector" label="Parallel Old Garbage Collection"
 261     description="Extra information specific to Parallel Old Garbage Collections">
 262     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 263     <Field type="ulong" contentType="address" name="densePrefix" label="Dense Prefix" description="The address of the dense prefix, used when compacting" />
 264   </Event>
 265 
 266   <Event name="YoungGarbageCollection" category="Java Virtual Machine, GC, Collector" label="Young Garbage Collection" description="Extra information specific to Young Garbage Collections">
 267     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 268     <Field type="uint" name="tenuringThreshold" label="Tenuring Threshold" />
 269   </Event>
 270 
 271   <Event name="OldGarbageCollection" category="Java Virtual Machine, GC, Collector" label="Old Garbage Collection" description="Extra information specific to Old Garbage Collections">
 272     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 273   </Event>
 274 
 275   <Event name="G1GarbageCollection" category="Java Virtual Machine, GC, Collector" label="G1 Garbage Collection" description="Extra information specific to G1 Garbage Collections">
 276     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 277     <Field type="G1YCType" name="type" label="Type" />
 278   </Event>
 279 
 280   <Event name="G1MMU" category="Java Virtual Machine, GC, Detailed" label="G1 MMU Information" startTime="false">
 281     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 282     <Field type="long" contentType="millis" name="timeSlice" label="Time Slice" description="Time slice used to calculate MMU" />
 283     <Field type="long" contentType="millis" name="gcTime" label="GC Time" description="Time stopped because of GC during last time slice" />
 284     <Field type="long" contentType="millis" name="pauseTarget" label="Pause Target" description="Max time allowed to be spent on GC during last time slice" />
 285   </Event>
 286 
 287   <Event name="EvacuationInformation" category="Java Virtual Machine, GC, Detailed" label="Evacuation Information" startTime="false">
 288     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 289     <Field type="uint" name="cSetRegions" label="Collection Set Regions" />
 290     <Field type="ulong" contentType="bytes" name="cSetUsedBefore" label="Collection Set Before" description="Memory usage before GC in the collection set regions" />
 291     <Field type="ulong" contentType="bytes" name="cSetUsedAfter" label="Collection Set After" description="Memory usage after GC in the collection set regions" />
 292     <Field type="uint" name="allocationRegions" label="Allocation Regions" description="Regions chosen as allocation regions during evacuation (includes survivors and old space regions)" />
 293     <Field type="ulong" contentType="bytes" name="allocationRegionsUsedBefore" label="Allocation Regions Before" description="Memory usage before GC in allocation regions" />
 294     <Field type="ulong" contentType="bytes" name="allocationRegionsUsedAfter" label="Allocation Regions After" description="Memory usage after GC in allocation regions" />
 295     <Field type="ulong" contentType="bytes" name="bytesCopied" label="Bytes Copied" />
 296     <Field type="uint" name="regionsFreed" label="Regions Freed" />
 297   </Event>
 298 
 299   <Event name="GCReferenceStatistics" category="Java Virtual Machine, GC, Reference" label="GC Reference Statistics" startTime="false"
 300     description="Total count of processed references during GC">
 301     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 302     <Field type="ReferenceType" name="type" label="Type" />
 303     <Field type="ulong" name="count" label="Total Count" />
 304   </Event>
 305 
 306   <Type name="CopyFailed">
 307     <Field type="ulong" name="objectCount" label="Object Count" />
 308     <Field type="ulong" contentType="bytes" name="firstSize" label="First Failed Object Size" />
 309     <Field type="ulong" contentType="bytes" name="smallestSize" label="Smallest Failed Object Size" />
 310     <Field type="ulong" contentType="bytes" name="totalSize" label="Total Object Size" />
 311   </Type>
 312 
 313   <Event name="ObjectCountAfterGC" category="Java Virtual Machine, GC, Detailed" startTime="false" label="Object Count after GC">
 314     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 315     <Field type="Class" name="objectClass" label="Object Class" />
 316     <Field type="long" name="count" label="Count" />
 317     <Field type="ulong" contentType="bytes" name="totalSize" label="Total Size" />
 318   </Event>
 319 
 320   <Type name="G1EvacuationStatistics">
 321     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 322     <Field type="ulong" contentType="bytes" name="allocated" label="Allocated" description="Total memory allocated by PLABs" />
 323     <Field type="ulong" contentType="bytes" name="wasted" label="Wasted" description="Total memory wasted within PLABs due to alignment or refill" />
 324     <Field type="ulong" contentType="bytes" name="used" label="Used" description="Total memory occupied by objects within PLABs" />
 325     <Field type="ulong" contentType="bytes" name="undoWaste" label="Undo Wasted" description="Total memory wasted due to allocation undo within PLABs" />
 326     <Field type="ulong" contentType="bytes" name="regionEndWaste" label="Region End Wasted" description="Total memory wasted at the end of regions due to refill" />
 327     <Field type="uint" contentType="bytes" name="regionsRefilled" label="Region Refills" description="Total memory wasted at the end of regions due to refill" />
 328     <Field type="ulong" contentType="bytes" name="directAllocated" label="Allocated (direct)" description="Total memory allocated using direct allocation outside of PLABs" />
 329     <Field type="ulong" contentType="bytes" name="failureUsed" label="Used (failure)" description="Total memory occupied by objects in regions where evacuation failed" />
 330     <Field type="ulong" contentType="bytes" name="failureWaste" label="Wasted (failure)" description="Total memory left unused in regions where evacuation failed" />
 331   </Type>
 332 
 333   <Event name="G1EvacuationYoungStatistics" category="Java Virtual Machine, GC, Detailed" label="G1 Evacuation Statistics for Young" startTime="false"
 334     description="Memory related evacuation statistics during GC for the young generation">
 335     <Field type="G1EvacuationStatistics" struct="true" name="statistics" label="Evacuation Statistics" />
 336   </Event>
 337 
 338   <Event name="G1EvacuationOldStatistics" category="Java Virtual Machine, GC, Detailed" label="G1 Evacuation Memory Statistics for Old" startTime="false"
 339     description="Memory related evacuation statistics during GC for the old generation">
 340     <Field type="G1EvacuationStatistics" struct="true" name="statistics" label="Evacuation Statistics" />
 341   </Event>
 342 
 343   <Event name="G1BasicIHOP" category="Java Virtual Machine, GC, Detailed" label="G1 Basic IHOP Statistics" startTime="false"
 344     description="Basic statistics related to current IHOP calculation">
 345     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 346     <Field type="ulong" contentType="bytes" name="threshold" label="Current IHOP Threshold" description="Current IHOP threshold" />
 347     <Field type="float" contentType="percentage" name="thresholdPercentage" label="Current IHOP Threshold" description="Current IHOP threshold in percent of old generation" />
 348     <Field type="ulong" contentType="bytes" name="targetOccupancy" label="Target Occupancy" description="Target old generation occupancy to reach at the start of mixed GC" />
 349     <Field type="ulong" contentType="bytes" name="currentOccupancy" label="Current Occupancy" description="Current old generation occupancy" />
 350     <Field type="ulong" contentType="bytes" name="recentMutatorAllocationSize" label="Recent Mutator Allocation Size"
 351       description="Mutator allocation during mutator operation in the most recent interval" />
 352     <Field type="long" contentType="millis" name="recentMutatorDuration" label="Recent Mutator Duration" description="Time the mutator ran in the most recent interval" />
 353     <Field type="double" contentType="bytes-per-second" name="recentAllocationRate" label="Recent Allocation Rate" description="Allocation rate of the mutator in the most recent interval in bytes/second" />
 354     <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" />
 355   </Event>
 356 
 357   <Event name="G1AdaptiveIHOP" category="Java Virtual Machine, GC, Detailed" label="G1 Adaptive IHOP Statistics" startTime="false"
 358     description="Statistics related to current adaptive IHOP calculation">
 359     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 360     <Field type="ulong" contentType="bytes" name="threshold" label="Threshold" description="Current IHOP Threshold" />
 361     <Field type="float" contentType="percentage" name="thresholdPercentage" label="Threshold" description="Current IHOP threshold in percent of the internal target occupancy" />
 362     <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" />
 363     <Field type="ulong" contentType="bytes" name="currentOccupancy" label="Current Occupancy" description="Current old generation occupancy" />
 364     <Field type="ulong" contentType="bytes" name="additionalBufferSize" label="Additional Buffer" description="Additional buffer size" experimental="true" />
 365     <Field type="double" contentType="bytes-per-second" name="predictedAllocationRate" label="Predicted Allocation Rate" description="Current predicted allocation rate for the mutator in bytes/second" />
 366     <Field type="long" contentType="millis" name="predictedMarkingDuration" label="Predicted Marking Duration"
 367       description="Current predicted time from the end of the last initial mark to the first mixed GC" />
 368     <Field type="boolean" name="predictionActive" label="Prediction Active" description="Indicates whether the adaptive IHOP prediction is active" />
 369   </Event>
 370 
 371   <Event name="PromoteObjectInNewPLAB" category="Java Virtual Machine, GC, Detailed" label="Promotion in new PLAB"
 372     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."
 373     thread="true" stackTrace="false" startTime="false">
 374     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" description="Identifier signifying GC during which the object was promoted" />
 375     <Field type="Class" name="objectClass" label="Object Class" description="Class of promoted object" />
 376     <Field type="ulong" contentType="bytes" name="objectSize" label="Object Size" description="Size of promoted object" />
 377     <Field type="uint" name="tenuringAge" label="Object Tenuring Age"
 378       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." />
 379     <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" />
 380     <Field type="ulong" contentType="bytes" name="plabSize" label="PLAB Size" description="Size of the allocated PLAB to which the object was copied" />
 381   </Event>
 382 
 383   <Event name="PromoteObjectOutsidePLAB" category="Java Virtual Machine, GC, Detailed" label="Promotion outside PLAB"
 384     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."
 385     thread="true" stackTrace="false" startTime="false">
 386     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" description="Identifier signifying GC during which the object was promoted" />
 387     <Field type="Class" name="objectClass" label="Object Class" description="Class of promoted object" />
 388     <Field type="ulong" contentType="bytes" name="objectSize" label="Object Size" description="Size of promoted object" />
 389     <Field type="uint" name="tenuringAge" label="Object Tenuring Age"
 390       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." />
 391     <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" />
 392   </Event>
 393 
 394   <Event name="PromotionFailed" category="Java Virtual Machine, GC, Detailed" label="Promotion Failed" startTime="false" description="Promotion of an object failed">
 395     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 396     <Field type="CopyFailed" struct="true" name="promotionFailed" label="Promotion Failed Data" />
 397     <Field type="Thread" name="thread" label="Running thread" />
 398   </Event>
 399 
 400   <Event name="EvacuationFailed" category="Java Virtual Machine, GC, Detailed" label="Evacuation Failed" startTime="false" description="Evacuation of an object failed">
 401     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 402     <Field type="CopyFailed" struct="true" name="evacuationFailed" label="Evacuation Failed Data" />
 403   </Event>
 404 
 405   <Event name="ConcurrentModeFailure" category="Java Virtual Machine, GC, Detailed" label="Concurrent Mode Failure" startTime="false" description="Concurrent Mode failed">
 406     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 407   </Event>
 408 
 409   <Event name="GCPhasePause" category="Java Virtual Machine, GC, Phases" label="GC Phase Pause" thread="true">
 410     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 411     <Field type="string" name="name" label="Name" />
 412   </Event>
 413 
 414   <Event name="GCPhasePauseLevel1" category="Java Virtual Machine, GC, Phases" label="GC Phase Pause Level 1" thread="true">
 415     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 416     <Field type="string" name="name" label="Name" />
 417   </Event>
 418 
 419   <Event name="GCPhasePauseLevel2" category="Java Virtual Machine, GC, Phases" label="GC Phase Pause Level 2" thread="true">
 420     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 421     <Field type="string" name="name" label="Name" />
 422   </Event>
 423 
 424   <Event name="GCPhasePauseLevel3" category="Java Virtual Machine, GC, Phases" label="GC Phase Pause Level 3" thread="true">
 425     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 426     <Field type="string" name="name" label="Name" />
 427   </Event>
 428 
 429   <Event name="GCPhasePauseLevel4" category="Java Virtual Machine, GC, Phases" label="GC Phase Pause Level 4" thread="true">
 430     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 431     <Field type="string" name="name" label="Name" />
 432   </Event>
 433 
 434   <Event name="GCPhaseConcurrent" category="Java Virtual Machine, GC, Phases" label="GC Phase Concurrent" thread="true">
 435     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 436     <Field type="string" name="name" label="Name" />
 437   </Event>
 438 
 439   <Event name="GCPhaseParallel" category="Java Virtual Machine, GC, Phases" label="GC Phase Parallel"
 440          startTime="true" thread="true" description="GC phases for parallel workers">
 441     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId"/>
 442     <Field type="uint" name="gcWorkerId" label="GC Worker Identifier" />
 443     <Field type="string" name="name" label="Name" />
 444   </Event>
 445   
 446   <Event name="AllocationRequiringGC" category="Java Virtual Machine, GC, Detailed" label="Allocation Requiring GC" thread="true" stackTrace="true"
 447     startTime="false">
 448     <Field type="uint" name="gcId" label="Pending GC Identifier" relation="GcId" />
 449     <Field type="ulong" contentType="bytes" name="size" label="Allocation Size" />
 450   </Event>
 451 
 452   <Event name="TenuringDistribution" category="Java Virtual Machine, GC, Detailed" label="Tenuring Distribution" startTime="false">
 453     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 454     <Field type="uint" name="age" label="Age" />
 455     <Field type="ulong" contentType="bytes" name="size" label="Size" />
 456   </Event>
 457 
 458   <Event name="G1HeapRegionTypeChange" category="Java Virtual Machine, GC, Detailed" label="G1 Heap Region Type Change" description="Information about a G1 heap region type change"
 459     startTime="false">
 460     <Field type="uint" name="index" label="Index" />
 461     <Field type="G1HeapRegionType" name="from" label="From" />
 462     <Field type="G1HeapRegionType" name="to" label="To" />
 463     <Field type="ulong" contentType="address" name="start" label="Start" />
 464     <Field type="ulong" contentType="bytes" name="used" label="Used" />
 465   </Event>
 466 
 467   <Event name="Compilation" category="Java Virtual Machine, Compiler" label="Compilation" thread="true">
 468     <Field type="Method" name="method" label="Java Method" />
 469     <Field type="uint" name="compileId" label="Compilation Identifier" relation="CompileId" />
 470     <Field type="ushort" name="compileLevel" label="Compilation Level" />
 471     <Field type="boolean" name="succeded" label="Succeeded" />
 472     <Field type="boolean" name="isOsr" label="On Stack Replacement" />
 473     <Field type="ulong" contentType="bytes" name="codeSize" label="Compiled Code Size" />
 474     <Field type="ulong" contentType="bytes" name="inlinedBytes" label="Inlined Code Size" />
 475   </Event>
 476 
 477   <Event name="CompilerPhase" category="Java Virtual Machine, Compiler" label="Compiler Phase" thread="true" >
 478     <Field type="CompilerPhaseType" name="phase" label="Compile Phase" />
 479     <Field type="uint" name="compileId" label="Compilation Identifier" relation="CompileId" />
 480     <Field type="ushort" name="phaseLevel" label="Phase Level" />
 481   </Event>
 482 
 483   <Event name="CompilationFailure" category="Java Virtual Machine, Compiler" label="Compilation Failure" thread="true"  startTime="false">
 484     <Field type="string" name="failureMessage" label="Failure Message" />
 485     <Field type="uint" name="compileId" label="Compilation Identifier" relation="CompileId" />
 486   </Event>
 487   
 488   <Type name="CalleeMethod">
 489     <Field type="string" name="type" label="Class" />
 490     <Field type="string" name="name" label="Method Name" />
 491     <Field type="string" name="descriptor" label="Method Descriptor" />
 492   </Type>
 493 
 494   <Event name="CompilerInlining" category="Java Virtual Machine, Compiler, Optimization" label="Method Inlining" thread="true" startTime="false">
 495     <Field type="uint" name="compileId" label="Compilation Identifier" relation="CompileId" />
 496     <Field type="Method" name="caller" label="Caller Method" />
 497     <Field type="CalleeMethod" name="callee" struct="true" label="Callee Method" />
 498     <Field type="boolean" name="succeeded" label="Succeeded" />
 499     <Field type="string" name="message" label="Message" />
 500     <Field type="int" name="bci" label="Byte Code Index" />
 501   </Event>
 502 
 503   <Event name="SweepCodeCache" category="Java Virtual Machine, Code Sweeper" label="Sweep Code Cache" thread="true" >
 504     <Field type="int" name="sweepId" label="Sweep Identifier" relation="SweepId" />
 505     <Field type="uint" name="sweptCount" label="Methods Swept" />
 506     <Field type="uint" name="flushedCount" label="Methods Flushed" />
 507     <Field type="uint" name="zombifiedCount" label="Methods Zombified" />
 508   </Event>
 509 
 510   <Event name="CodeCacheFull" category="Java Virtual Machine, Code Cache" label="Code Cache Full" thread="true" startTime="false">
 511     <Field type="CodeBlobType" name="codeBlobType" label="Code Heap" />
 512     <Field type="ulong" contentType="address" name="startAddress" label="Start Address" />
 513     <Field type="ulong" contentType="address" name="commitedTopAddress" label="Commited Top" />
 514     <Field type="ulong" contentType="address" name="reservedTopAddress" label="Reserved Top" />
 515     <Field type="int" name="entryCount" label="Entries" />
 516     <Field type="int" name="methodCount" label="Methods" />
 517     <Field type="int" name="adaptorCount" label="Adaptors" />
 518     <Field type="ulong" contentType="bytes" name="unallocatedCapacity" label="Unallocated" />
 519     <Field type="int" name="fullCount" label="Full Count" />
 520   </Event>
 521 
 522   <Event name="SafepointBegin" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint Begin" description="Safepointing begin" thread="true">
 523     <Field type="ulong" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
 524     <Field type="int" name="totalThreadCount" label="Total Threads" description="The total number of threads at the start of safe point" />
 525     <Field type="int" name="jniCriticalThreadCount" label="JNI Critical Threads" description="The number of threads in JNI critical sections" />
 526   </Event>
 527 
 528   <Event name="SafepointStateSynchronization" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint State Synchronization" description="Synchronize run state of threads"
 529     thread="true">
 530     <Field type="ulong" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
 531     <Field type="int" name="initialThreadCount" label="Initial Threads" description="The number of threads running at the beginning of state check" />
 532     <Field type="int" name="runningThreadCount" label="Running Threads" description="The number of threads still running" />
 533     <Field type="int" name="iterations" label="Iterations" description="Number of state check iterations" />
 534   </Event>
 535 
 536   <Event name="SafepointWaitBlocked" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint Wait Blocked" description="Safepointing begin waiting on running threads to block"
 537     thread="true">
 538     <Field type="ulong" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
 539     <Field type="int" name="runningThreadCount" label="Running Threads" description="The number running of threads wait for safe point" />
 540   </Event>
 541 
 542   <Event name="SafepointCleanup" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint Cleanup" description="Safepointing begin running cleanup tasks"
 543     thread="true">
 544     <Field type="ulong" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
 545   </Event>
 546 
 547   <Event name="SafepointCleanupTask" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint Cleanup Task" description="Safepointing begin running cleanup tasks"
 548     thread="true">
 549     <Field type="ulong" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
 550     <Field type="string" name="name" label="Task Name" description="The task name" />
 551   </Event>
 552 
 553   <Event name="SafepointEnd" category="Java Virtual Machine, Runtime, Safepoint" label="Safepoint End" description="Safepointing end" thread="true">
 554     <Field type="ulong" name="safepointId" label="Safepoint Identifier" relation="SafepointId" />
 555   </Event>
 556 
 557   <Event name="ExecuteVMOperation" category="Java Virtual Machine, Runtime" label="VM Operation" description="Execution of a VM Operation" thread="true">
 558     <Field type="VMOperationType" name="operation" label="Operation" />
 559     <Field type="boolean" name="safepoint" label="At Safepoint" description="If the operation occured at a safepoint" />
 560     <Field type="boolean" name="blocking" label="Caller Blocked" description="If the calling thread was blocked until the operation was complete" />
 561     <Field type="Thread" name="caller" label="Caller" transition="from"
 562       description="Thread requesting operation. If non-blocking, will be set to 0 indicating thread is unknown" />
 563     <Field type="ulong" name="safepointId" label="Safepoint Identifier" description="The safepoint (if any) under which this operation was completed"
 564       relation="SafepointId" />
 565   </Event>
 566 
 567   <Event name="Shutdown" category="Java Virtual Machine, Runtime" label="JVM Shutdown" description="JVM shutting down" thread="true" stackTrace="true"
 568     startTime="false">
 569     <Field type="string" name="reason" label="Reason" description="Reason for JVM shutdown" />
 570   </Event>
 571 
 572   <Event name="ObjectAllocationInNewTLAB" category="Java Application" label="Allocation in new TLAB" description="Allocation in new Thread Local Allocation Buffer"
 573     thread="true" stackTrace="true" startTime="false">
 574     <Field type="Class" name="objectClass" label="Object Class" description="Class of allocated object" />
 575     <Field type="ulong" contentType="bytes" name="allocationSize" label="Allocation Size" />
 576     <Field type="ulong" contentType="bytes" name="tlabSize" label="TLAB Size" />
 577   </Event>
 578 
 579   <Event name="ObjectAllocationOutsideTLAB" category="Java Application" label="Allocation outside TLAB" description="Allocation outside Thread Local Allocation Buffers"
 580     thread="true" stackTrace="true" startTime="false">
 581     <Field type="Class" name="objectClass" label="Object Class" description="Class of allocated object" />
 582     <Field type="ulong" contentType="bytes" name="allocationSize" label="Allocation Size" />
 583   </Event>
 584 
 585   <Event name="OldObjectSample" category="Java Virtual Machine, Profiling" label="Old Object Sample" description="A potential memory leak" stackTrace="true" thread="true"
 586     startTime="false" cutoff="true">
 587     <Field type="Ticks" name="allocationTime" label="Allocation Time" />
 588     <Field type="ulong" contentType="bytes" name="lastKnownHeapUsage" label="Last Known Heap Usage" />
 589     <Field type="OldObject" name="object" label="Object" />
 590     <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" />
 591     <Field type="OldObjectGcRoot" name="root" label="GC Root" />
 592   </Event>
 593 
 594   <Event name="DumpReason" category="Flight Recorder" label="Recording Reason" 
 595          description="Who requested the recording and why" 
 596          startTime="false">
 597     <Field type="string" name="reason" label="Reason" description="Reason for writing recording data to disk" />
 598     <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" />
 599   </Event>
 600 
 601   <Event name="DataLoss" category="Flight Recorder" label="Data Loss" 
 602          description="Data could not be copied out from a buffer, typically because of contention"
 603          startTime="false">
 604     <Field type="ulong" contentType="bytes" name="amount" label="Amount" description="Amount lost data" />
 605     <Field type="ulong" contentType="bytes" name="total" label="Total" description="Total lost amount for thread" />
 606   </Event>
 607 
 608   <Event name="JVMInformation" category="Java Virtual Machine" label="JVM Information" 
 609          description="Description of JVM and the Java application"
 610          period="endChunk">
 611     <Field type="string" name="jvmName" label="JVM Name" />
 612     <Field type="string" name="jvmVersion" label="JVM Version" />
 613     <Field type="string" name="jvmArguments" label="JVM Command Line Arguments" />
 614     <Field type="string" name="jvmFlags" label="JVM Settings File Arguments" />
 615     <Field type="string" name="javaArguments" label="Java Application Arguments" />
 616     <Field type="long" contentType="epochmillis" name="jvmStartTime" label="JVM Start Time" />
 617     <Field type="long" name="pid" label="Process Identifier" />
 618      </Event>
 619 
 620   <Event name="OSInformation" category="Operating System" label="OS Information" period="endChunk">
 621     <Field type="string" name="osVersion" label="OS Version" />
 622   </Event>
 623 
 624   <Event name="InitialSystemProperty" category="Java Virtual Machine" label="Initial System Property" description="System Property at JVM start" period="endChunk">
 625     <Field type="string" name="key" label="Key" />
 626     <Field type="string" name="value" label="Value" />
 627   </Event>
 628 
 629   <Event name="InitialEnvironmentVariable" category="Operating System" label="Initial Environment Variable" period="endChunk">
 630     <Field type="string" name="key" label="Key" />
 631     <Field type="string" name="value" label="Value" />
 632   </Event>
 633 
 634   <Event name="SystemProcess" category="Operating System" label="System Process" period="endChunk">
 635     <Field type="string" name="pid" label="Process Identifier" />
 636     <Field type="string" name="commandLine" label="Command Line" />
 637   </Event>
 638 
 639   <Event name="CPUInformation" category="Operating System, Processor" label="CPU Information" period="endChunk">
 640     <Field type="string" name="cpu" label="Type" />
 641     <Field type="string" name="description" label="Description" />
 642     <Field type="uint" name="sockets" label="Sockets" />
 643     <Field type="uint" name="cores" label="Cores" />
 644     <Field type="uint" name="hwThreads" label="Hardware Threads" />
 645   </Event>
 646 
 647   <Event name="CPUTimeStampCounter" category="Operating System, Processor" label="CPU Time Stamp Counter" period="endChunk">
 648     <Field type="boolean" name="fastTimeEnabled" label="Fast Time" />
 649     <Field type="boolean" name="fastTimeAutoEnabled" label="Trusted Platform" />
 650     <Field type="long" contentType="hertz" name="osFrequency" label="OS Frequency" />
 651     <Field type="long" contentType="hertz" name="fastTimeFrequency" label="Fast Time Frequency" />
 652   </Event>
 653 
 654   <Event name="CPULoad" category="Operating System, Processor" label="CPU Load" description="OS CPU Load" period="everyChunk">
 655     <Field type="float" contentType="percentage" name="jvmUser" label="JVM User" />
 656     <Field type="float" contentType="percentage" name="jvmSystem" label="JVM System" />
 657     <Field type="float" contentType="percentage" name="machineTotal" label="Machine Total" />
 658   </Event>
 659 
 660   <Event name="ThreadCPULoad" category="Operating System, Processor" label="Thread CPU Load" period="everyChunk" thread="true">
 661     <Field type="float" contentType="percentage" name="user" label="User Mode CPU Load" description="User mode thread CPU load" />
 662     <Field type="float" contentType="percentage" name="system" label="System Mode CPU Load" description="System mode thread CPU load" />
 663   </Event>
 664 
 665   <Event name="ThreadContextSwitchRate" category="Operating System, Processor" label="Thread Context Switch Rate" period="everyChunk">
 666     <Field type="float" contentType="hertz" name="switchRate" label="Switch Rate" description="Number of context switches per second" />
 667   </Event>
 668 
 669   <Event name="NetworkUtilization" category="Operating System, Network" label="Network Utilization" period="everyChunk">
 670     <Field type="NetworkInterfaceName" name="networkInterface" label="Network Interface" description="Network Interface Name"/>
 671     <Field type="long" contentType="bits-per-second" name="readRate" label="Read Rate" description="Number of incoming bits per second"/>
 672     <Field type="long" contentType="bits-per-second" name="writeRate" label="Write Rate" description="Number of outgoing bits per second"/>
 673   </Event>
 674 
 675   <Event name="JavaThreadStatistics" category="Java Application, Statistics" label="Java Thread Statistics" period="everyChunk">
 676     <Field type="long" name="activeCount" label="Active Threads" description="Number of live active threads including both daemon and non-daemon threads" />
 677     <Field type="long" name="daemonCount" label="Daemon Threads" description="Number of live daemon threads" />
 678     <Field type="long" name="accumulatedCount" label="Accumulated Threads" description="Number of threads created and also started since JVM start" />
 679     <Field type="long" name="peakCount" label="Peak Threads" description="Peak live thread count since JVM start or when peak count was reset" />
 680   </Event>
 681 
 682   <Event name="ClassLoadingStatistics" category="Java Application, Statistics" label="Class Loading Statistics" period="everyChunk">
 683     <Field type="long" name="loadedClassCount" label="Loaded Class Count" description="Number of classes loaded since JVM start" />
 684     <Field type="long" name="unloadedClassCount" label="Unloaded Class Count" description="Number of classes unloaded since JVM start" />
 685   </Event>
 686 
 687   <Event name="ClassLoaderStatistics" category="Java Application, Statistics" label="Class Loader Statistics" period="everyChunk">
 688     <Field type="ClassLoader" name="classLoader" label="Class Loader" />
 689     <Field type="ClassLoader" name="parentClassLoader" label="Parent Class Loader" />
 690     <Field type="ulong" contentType="address" name="classLoaderData" label="ClassLoaderData Pointer" description="Pointer to the ClassLoaderData structure in the JVM" />
 691     <Field type="long" name="classCount" label="Classes" description="Number of loaded classes" />
 692     <Field type="ulong" contentType="bytes" name="chunkSize" label="Total Chunk Size" description="Total size of all allocated metaspace chunks (each chunk has several blocks)" />
 693     <Field type="ulong" contentType="bytes" name="blockSize" label="Total Block Size" description="Total size of all allocated metaspace blocks (each chunk has several blocks)" />
 694     <Field type="long" name="unsafeAnonymousClassCount" label="Unsafe Anonymous Classes" description="Number of loaded classes to support invokedynamic" />
 695     <Field type="ulong" contentType="bytes" name="unsafeAnonymousChunkSize" label="Total Unsafe Anonymous Classes Chunk Size"
 696       description="Total size of all allocated metaspace chunks for unsafe anonymous classes (each chunk has several blocks)" />
 697     <Field type="ulong" contentType="bytes" name="unsafeAnonymousBlockSize" label="Total Unsafe Anonymous Classes Block Size"
 698       description="Total size of all allocated metaspace blocks for unsafe anonymous classes (each chunk has several blocks)" />
 699   </Event>
 700 
 701   <Event name="ThreadAllocationStatistics" category="Java Application, Statistics" label="Thread Allocation Statistics" period="everyChunk">
 702     <Field type="ulong" contentType="bytes" name="allocated" label="Allocated" description="Approximate number of bytes allocated since thread start" />
 703     <Field type="Thread" name="thread" label="Thread" />
 704   </Event>
 705 
 706   <Event name="PhysicalMemory" category="Operating System, Memory" label="Physical Memory" description="OS Physical Memory" period="everyChunk">
 707     <Field type="ulong" contentType="bytes" name="totalSize" label="Total Size" description="Total amount of physical memory available to OS" />
 708     <Field type="ulong" contentType="bytes" name="usedSize" label="Used Size" description="Total amount of physical memory in use" />
 709   </Event>
 710 
 711   <Event name="ExecutionSample" category="Java Virtual Machine, Profiling" label="Method Profiling Sample" description="Snapshot of a threads state"
 712     period="everyChunk">
 713     <Field type="Thread" name="sampledThread" label="Thread" />
 714     <Field type="StackTrace" name="stackTrace" label="Stack Trace" />
 715     <Field type="ThreadState" name="state" label="Thread State" />
 716   </Event>
 717 
 718   <Event name="NativeMethodSample" category="Java Virtual Machine, Profiling" label="Method Profiling Sample Native" description="Snapshot of a threads state when in native"
 719     period="everyChunk">
 720     <Field type="Thread" name="sampledThread" label="Thread" />
 721     <Field type="StackTrace" name="stackTrace" label="Stack Trace" />
 722     <Field type="ThreadState" name="state" label="Thread State" />
 723   </Event>
 724 
 725   <Event name="ThreadDump" category="Java Virtual Machine, Runtime" label="Thread Dump" period="everyChunk">
 726     <Field type="string" name="result" label="Thread Dump" />
 727   </Event>
 728 
 729   <Event name="NativeLibrary" category="Java Virtual Machine, Runtime" label="Native Library" period="everyChunk">
 730     <Field type="string" name="name" label="Name" />
 731     <Field type="ulong" contentType="address" name="baseAddress" label="Base Address" description="Starting address of the module" />
 732     <Field type="ulong" contentType="address" name="topAddress" label="Top Address" description="Ending address of the module" />
 733   </Event>
 734 
 735   <Event name="ModuleRequire" category="Java Virtual Machine, Runtime, Modules" label="Module Require" thread="false" period="everyChunk"
 736     description="A directed edge representing a dependency">
 737     <Field type="Module" name="source" label="Source Module" />
 738     <Field type="Module" name="requiredModule" label="Required Module" />
 739   </Event>
 740 
 741   <Event name="ModuleExport" category="Java Virtual Machine, Runtime, Modules" label="Module Export" thread="false" period="everyChunk">
 742     <Field type="Package" name="exportedPackage" label="Exported Package" />
 743     <Field type="Module" name="targetModule" label="Target Module"
 744       description="Module to which the package is qualifiedly exported. If null or N/A, the package is unqualifiedly exported" />
 745   </Event>
 746 
 747   <Event name="CompilerStatistics" category="Java Virtual Machine, Compiler" label="Compiler Statistics" thread="false" period="everyChunk" startTime="false">
 748     <Field type="int" name="compileCount" label="Compiled Methods" />
 749     <Field type="int" name="bailoutCount" label="Bailouts" />
 750     <Field type="int" name="invalidatedCount" label="Invalidated Compilations" />
 751     <Field type="int" name="osrCompileCount" label="OSR Compilations" />
 752     <Field type="int" name="standardCompileCount" label="Standard Compilations" />
 753     <Field type="ulong" contentType="bytes" name="osrBytesCompiled" label="OSR Bytes Compiled" />
 754     <Field type="ulong" contentType="bytes" name="standardBytesCompiled" label="Standard Bytes Compiled" />
 755     <Field type="ulong" contentType="bytes" name="nmetodsSize" label="Compilation Resulting Size" />
 756     <Field type="ulong" contentType="bytes" name="nmetodCodeSize" label="Compilation Resulting Code Size" />
 757     <Field type="long" contentType="millis" name="peakTimeSpent" label="Peak Time" />
 758     <Field type="long" contentType="millis" name="totalTimeSpent" label="Total time" />
 759   </Event>
 760 
 761   <Event name="CompilerConfiguration" category="Java Virtual Machine, Compiler" label="Compiler Configuration" thread="false" period="endChunk" startTime="false">
 762     <Field type="int" name="threadCount" label="Thread Count" />
 763     <Field type="boolean" name="tieredCompilation" label="Tiered Compilation" />
 764   </Event>
 765 
 766   <Event name="CodeCacheStatistics" category="Java Virtual Machine, Code Cache" label="Code Cache Statistics" thread="false" period="everyChunk" startTime="false">
 767     <Field type="CodeBlobType" name="codeBlobType" label="Code Heap" />
 768     <Field type="ulong" contentType="address" name="startAddress" label="Start Address" />
 769     <Field type="ulong" contentType="address" name="reservedTopAddress" label="Reserved Top" />
 770     <Field type="int" name="entryCount" label="Entries" />
 771     <Field type="int" name="methodCount" label="Methods" />
 772     <Field type="int" name="adaptorCount" label="Adaptors" />
 773     <Field type="ulong" contentType="bytes" name="unallocatedCapacity" label="Unallocated" />
 774     <Field type="int" name="fullCount" label="Full Count" />
 775   </Event>
 776 
 777   <Event name="CodeCacheConfiguration" category="Java Virtual Machine, Code Cache" label="Code Cache Configuration" thread="false" period="endChunk" startTime="false">
 778     <Field type="ulong" contentType="bytes" name="initialSize" label="Initial Size" />
 779     <Field type="ulong" contentType="bytes" name="reservedSize" label="Reserved Size" />
 780     <Field type="ulong" contentType="bytes" name="nonNMethodSize" label="Non-nmethod Size" />
 781     <Field type="ulong" contentType="bytes" name="profiledSize" label="Profiled Size" />
 782     <Field type="ulong" contentType="bytes" name="nonProfiledSize" label="Non-profiled Size" />
 783     <Field type="ulong" contentType="bytes" name="expansionSize" label="Expansion size" />
 784     <Field type="ulong" contentType="bytes" name="minBlockLength" label="Minimum Block Length" />
 785     <Field type="ulong" contentType="address" name="startAddress" label="Start Address" />
 786     <Field type="ulong" contentType="address" name="reservedTopAddress" label="Reserved Top" />
 787   </Event>
 788 
 789   <Event name="CodeSweeperStatistics" category="Java Virtual Machine, Code Sweeper" label="Code Sweeper Statistics" thread="false" period="everyChunk" startTime="false">
 790     <Field type="int" name="sweepCount" label="Sweeps" />
 791     <Field type="int" name="methodReclaimedCount" label="Methods Reclaimed" />
 792     <Field type="Tickspan" name="totalSweepTime" label="Time Spent Sweeping" />
 793     <Field type="Tickspan" name="peakFractionTime" label="Peak Time Fraction Sweep" />
 794     <Field type="Tickspan" name="peakSweepTime" label="Peak Time Full Sweep" />
 795   </Event>
 796 
 797   <Event name="CodeSweeperConfiguration" category="Java Virtual Machine, Code Sweeper" label="Code Sweeper Configuration" thread="false" period="endChunk" startTime="false">
 798     <Field type="boolean" name="sweeperEnabled" label="Code Sweeper Enabled" />
 799     <Field type="boolean" name="flushingEnabled" label="Code Cache Flushing Enabled" />
 800   </Event>
 801 
 802   <Event name="IntFlag" category="Java Virtual Machine, Flag" period="endChunk" label="Int Flag">
 803     <Field type="string" name="name" label="Name" />
 804     <Field type="int" name="value" label="Value" />
 805     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 806   </Event>
 807 
 808   <Event name="UnsignedIntFlag" category="Java Virtual Machine, Flag" period="endChunk" label="Unsigned Int Flag">
 809     <Field type="string" name="name" label="Name" />
 810     <Field type="uint" name="value" label="Value" />
 811     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 812   </Event>
 813 
 814   <Event name="LongFlag" category="Java Virtual Machine, Flag" period="endChunk" label="Long Flag">
 815     <Field type="string" name="name" label="Name" />
 816     <Field type="long" name="value" label="Value" />
 817     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 818   </Event>
 819 
 820   <Event name="UnsignedLongFlag" category="Java Virtual Machine, Flag" period="endChunk" label="Unsigned Long Flag">
 821     <Field type="string" name="name" label="Name" />
 822     <Field type="ulong" name="value" label="Value" />
 823     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 824   </Event>
 825 
 826   <Event name="DoubleFlag" category="Java Virtual Machine, Flag" period="endChunk" label="Double Flag">
 827     <Field type="string" name="name" label="Name" />
 828     <Field type="double" name="value" label="Value" />
 829     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 830   </Event>
 831 
 832   <Event name="BooleanFlag" category="Java Virtual Machine, Flag" period="endChunk" label="Boolean Flag">
 833     <Field type="string" name="name" label="Name" />
 834     <Field type="boolean" name="value" label="Value" />
 835     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 836   </Event>
 837 
 838   <Event name="StringFlag" category="Java Virtual Machine, Flag" period="endChunk" label="String Flag">
 839     <Field type="string" name="name" label="Name" />
 840     <Field type="string" name="value" label="Value" />
 841     <Field type="FlagValueOrigin" name="origin" label="Origin" />
 842   </Event>
 843 
 844   <Event name="ObjectCount" category="Java Virtual Machine, GC, Detailed" startTime="false" period="everyChunk" label="Object Count">
 845     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId" />
 846     <Field type="Class" name="objectClass" label="Object Class" />
 847     <Field type="long" name="count" label="Count" />
 848     <Field type="ulong" contentType="bytes" name="totalSize" label="Total Size" />
 849   </Event>
 850 
 851   <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"
 852     period="everyChunk">
 853     <Field type="uint" name="index" label="Index" />
 854     <Field type="G1HeapRegionType" name="type" label="Type" />
 855     <Field type="ulong" contentType="address" name="start" label="Start" />
 856     <Field type="ulong" contentType="bytes" name="used" label="Used" />
 857   </Event>
 858 
 859   <Event name="GCConfiguration" category="Java Virtual Machine, GC, Configuration" label="GC Configuration" description="The configuration of the garbage collector"
 860     period="endChunk">
 861     <Field type="GCName" name="youngCollector" label="Young Garbage Collector" description="The garbage collector used for the young generation" />
 862     <Field type="GCName" name="oldCollector" label="Old Garbage Collector" description="The garbage collector used for the old generation" />
 863     <Field type="uint" name="parallelGCThreads" label="Parallel GC Threads" description="Number of parallel threads to use for garbage collection" />
 864     <Field type="uint" name="concurrentGCThreads" label="Concurrent GC Threads" description="Number of concurrent threads to use for garbage collection" />
 865     <Field type="boolean" name="usesDynamicGCThreads" label="Uses Dynamic GC Threads" description="Whether a dynamic number of GC threads are used or not" />
 866     <Field type="boolean" name="isExplicitGCConcurrent" label="Concurrent Explicit GC" description="Whether System.gc() is concurrent or not" />
 867     <Field type="boolean" name="isExplicitGCDisabled" label="Disabled Explicit GC" description="Whether System.gc() will cause a garbage collection or not" />
 868     <Field type="long" contentType="millis" name="pauseTarget" label="Pause Target" description="Target for GC pauses" />
 869     <Field type="uint" name="gcTimeRatio" label="GC Time Ratio" description="Target for runtime vs garbage collection time" />
 870   </Event>
 871 
 872   <Event name="GCSurvivorConfiguration" category="Java Virtual Machine, GC, Configuration" label="GC Survivor Configuration"
 873     description="The configuration of the survivors of garbage collection" period="endChunk">
 874     <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" />
 875     <Field type="ubyte" name="initialTenuringThreshold" label="Initial Tenuring Threshold" description="Initial age limit for how old objects to keep in survivor area" />
 876   </Event>
 877 
 878   <Event name="GCTLABConfiguration" category="Java Virtual Machine, GC, Configuration" label="TLAB Configuration"
 879     description="The configuration of the Thread Local Allocation Buffers (TLABs)" period="endChunk">
 880     <Field type="boolean" name="usesTLABs" label="TLABs Used" description="If Thread Local Allocation Buffers (TLABs) are in use" />
 881     <Field type="ulong" contentType="bytes" name="minTLABSize" label="Minimum TLAB Size" />
 882     <Field type="ulong" contentType="bytes" name="tlabRefillWasteLimit" label="TLAB Refill Waste Limit" />
 883   </Event>
 884 
 885   <Event name="GCHeapConfiguration" category="Java Virtual Machine, GC, Configuration" label="GC Heap Configuration" description="The configuration of the garbage collected heap"
 886     period="endChunk">
 887     <Field type="ulong" contentType="bytes" name="minSize" label="Minimum Heap Size" />
 888     <Field type="ulong" contentType="bytes" name="maxSize" label="Maximum Heap Size" />
 889     <Field type="ulong" contentType="bytes" name="initialSize" label="Initial Heap Size" />
 890     <Field type="boolean" name="usesCompressedOops" label="If Compressed Oops Are Used" description="If compressed Oops (Ordinary Object Pointers) are enabled" />
 891     <Field type="NarrowOopMode" name="compressedOopsMode" label="Compressed Oops Mode" description="The kind of compressed oops being used" />
 892     <Field type="ulong" contentType="bytes" name="objectAlignment" label="Object Alignment" description="Object alignment (in bytes) on the heap" />
 893     <Field type="ubyte" name="heapAddressBits" label="Heap Address Size" description="Heap Address Size (in bits)" />
 894   </Event>
 895 
 896   <Event name="YoungGenerationConfiguration" category="Java Virtual Machine, GC, Configuration" label="Young Generation Configuration"
 897     description="The configuration of the young generation of the garbage collected heap" period="endChunk">
 898     <Field type="ulong" contentType="bytes" name="minSize" label="Minimum Young Generation Size" />
 899     <Field type="ulong" contentType="bytes" name="maxSize" label="Maximum Young Generation Size" />
 900     <Field type="uint" name="newRatio" label="New Ratio" description="The size of the young generation relative to the tenured generation" />
 901   </Event>
 902 
 903   <Event name="ZPageAllocation" category="Java Virtual Machine, GC, Detailed" label="ZPage Allocation" description="Allocation of a ZPage" thread="true" stackTrace="false" experimental="true">
 904      <Field type="ulong" contentType="bytes" name="pageSize" label="Page Size" />
 905      <Field type="ulong" contentType="bytes" name="usedAfter" label="Used After" />
 906      <Field type="ulong" contentType="bytes" name="freeAfter" label="Free After" />
 907      <Field type="ulong" contentType="bytes" name="inCacheAfter" label="In Cache After" />
 908      <Field type="boolean" name="nonBlocking" label="Non-blocking" />
 909      <Field type="boolean" name="noReserve" label="No Reserve" />
 910   </Event>
 911 
 912   <Event name="ZThreadPhase" category="Java Virtual Machine, GC, Detailed" label="ZGC Thread Phase" thread="true" experimental="true">
 913     <Field type="uint" name="gcId" label="GC Identifier" relation="GcId"/>
 914     <Field type="string" name="name" label="Name" />
 915   </Event>
 916 
 917   <Event name="ZStatisticsCounter" category="Java Virtual Machine, GC, Detailed" label="Z Statistics Counter" thread="true" experimental="true" >
 918     <Field type="ZStatisticsCounterType" name="id" label="Id" />
 919     <Field type="ulong" name="increment" label="Increment" />
 920     <Field type="ulong" name="value" label="Value" />
 921   </Event>
 922 
 923   <Event name="ZStatisticsSampler" category="Java Virtual Machine, GC, Detailed" label="Z Statistics Sampler" thread="true" experimental="true">
 924     <Field type="ZStatisticsSamplerType" name="id" label="Id" />
 925     <Field type="ulong" name="value" label="Value" />
 926   </Event>
 927 
 928   <Type name="ZStatisticsCounterType" label="Z Statistics Counter">
 929     <Field type="string" name="counter" label="Counter" />
 930   </Type>
 931 
 932   <Type name="ZStatisticsSamplerType" label="Z Statistics Sampler">
 933     <Field type="string" name="sampler" label="Sampler" />
 934   </Type>
 935 
 936   <Type name="NetworkInterfaceName" label="Network Interface">
 937     <Field type="string" name="networkInterface" label="Network Interface" description="Network Interface Name" />
 938   </Type>
 939 
 940   <Type name="Thread" label="Thread">
 941     <Field type="string" name="osName" label="OS Thread Name" />
 942     <Field type="long" name="osThreadId" label="OS Thread Id" />
 943     <Field type="string" name="javaName" label="Java Thread Name" />
 944     <Field type="long" name="javaThreadId" label="Java Thread Id" />
 945     <Field type="ThreadGroup" name="group" label="Java Thread Group" />
 946   </Type>
 947 
 948   <Type name="ThreadGroup" label="Thread Group">
 949     <Field type="ThreadGroup" name="parent" label="Parent" />
 950     <Field type="string" name="name" label="Name" />
 951   </Type>
 952 
 953   <Type name="Class" label="Java Class">
 954     <Field type="ClassLoader" name="classLoader" label="Class Loader" />
 955     <Field type="Symbol" name="name" label="Name" />
 956     <Field type="Package" name="package" label="Package" />
 957     <Field type="int" name="modifiers" label="Access Modifiers" />
 958   </Type>
 959 
 960   <Type name="ClassLoader" label="Java Class Loader">
 961     <Field type="Class" name="type" label="Type" />
 962     <Field type="Symbol" name="name" label="Name" />
 963   </Type>
 964 
 965   <Type name="Method" label="Java Method">
 966     <Field type="Class" name="type" label="Type" />
 967     <Field type="Symbol" name="name" label="Name" />
 968     <Field type="Symbol" name="descriptor" label="Descriptor" />
 969     <Field type="int" name="modifiers" label="Access Modifiers" />
 970     <Field type="boolean" name="hidden" label="Hidden" />
 971   </Type>
 972 
 973   <Type name="Symbol" label="Symbol">
 974     <Field type="string" name="string" label="String" />
 975   </Type>
 976 
 977   <Type name="ThreadState" label="Java Thread State">
 978     <Field type="string" name="name" label="Name" />
 979   </Type>
 980 
 981   <Type name="GCName" label="GC Name">
 982     <Field type="string" name="name" label="Name" />
 983   </Type>
 984 
 985   <Type name="GCCause" label="GC Cause">
 986     <Field type="string" name="cause" label="Cause" />
 987   </Type>
 988 
 989   <Type name="GCWhen" label="GC When">
 990     <Field type="string" name="when" label="When" />
 991   </Type>
 992 
 993   <Type name="G1HeapRegionType" label="G1 Heap Region Type">
 994     <Field type="string" name="type" label="Type" />
 995   </Type>
 996 
 997   <Type name="G1YCType" label="G1 YC Type">
 998     <Field type="string" name="type" label="Type" />
 999   </Type>
1000 
1001   <Type name="GCThresholdUpdater" label="GC Threshold Updater">
1002     <Field type="string" name="updater" label="Updater" />
1003   </Type>
1004 
1005   <Type name="ReferenceType" label="Reference Type">
1006     <Field type="string" name="type" label="Type" />
1007   </Type>
1008 
1009   <Type name="MetadataType" label="Metadata Type">
1010     <Field type="string" name="type" label="Type" />
1011   </Type>
1012 
1013   <Type name="MetaspaceObjectType" label="Metaspace Object Type">
1014     <Field type="string" name="type" label="Type" />
1015   </Type>
1016 
1017   <Type name="NarrowOopMode" label="Narrow Oop Mode">
1018     <Field type="string" name="mode" label="Mode" />
1019   </Type>
1020 
1021   <Type name="VMOperationType" label="VM Operation Type">
1022     <Field type="string" name="type" label="Type" />
1023   </Type>
1024 
1025   <Type name="CompilerPhaseType" label="Compiler Phase Type">
1026     <Field type="string" name="phase" label="Phase" />
1027   </Type>
1028 
1029   <Type name="FlagValueOrigin" label="Flag Value Origin">
1030     <Field type="string" name="origin" label="Origin" />
1031   </Type>
1032 
1033   <Type name="CodeBlobType" label="Code Blob Type">
1034     <Field type="string" name="type" label="Type" />
1035   </Type>
1036 
1037   <Type name="InflateCause" label="Inflation Cause">
1038     <Field type="string" name="cause" label="Cause" />
1039   </Type>
1040 
1041   <Type name="Module" label="Module">
1042     <Field type="Symbol" name="name" label="Name" />
1043     <Field type="Symbol" name="version" label="Version" />
1044     <Field type="Symbol" name="location" label="Location" />
1045     <Field type="ClassLoader" name="classLoader" label="Class Loader" />
1046   </Type>
1047 
1048   <Type name="Package" label="Package">
1049     <Field type="Symbol" name="name" label="Name" />
1050     <Field type="Module" name="module" label="Module" />
1051     <Field type="boolean" name="exported" label="Exported" />
1052   </Type>
1053 
1054   <Type name="StackTrace" label="Stacktrace">
1055     <Field type="boolean" name="truncated" label="Truncated" />
1056     <Field type="StackFrame" array="true" struct="true" name="frames" label="Stack Frames" />
1057   </Type>
1058 
1059   <Type name="FrameType" label="Frame type">
1060     <Field type="string" name="description" label="Description" />
1061   </Type>
1062 
1063   <Type name="OldObjectRootSystem" label="GC Root System">
1064     <Field type="string" name="system" label="System" />
1065   </Type>
1066 
1067   <Type name="OldObjectRootType" label="GC Root Type">
1068     <Field type="string" name="type" label="Type" />
1069   </Type>
1070 
1071   <Type name="OldObjectGcRoot" label="GC Root">
1072     <Field type="string" name="description" label="Root Description" description="Root information" />
1073     <Field type="OldObjectRootSystem" name="system" label="System" description="The subsystem of origin for the root" />
1074     <Field type="OldObjectRootType" name="type" label="Type" description="The root type" />
1075   </Type>
1076 
1077   <Type name="OldObjectArray" label="Old Object Array">
1078     <Field type="int" name="size" label="Array Size" description="Size of array" />
1079     <Field type="int" name="index" label="Index" description="Index in the array" />
1080   </Type>
1081 
1082   <Type name="OldObjectField" label="Old Object Field">
1083     <Field type="string" name="name" label="Field" description="Name of field" />
1084     <Field type="short" name="modifiers" label="Field Modifiers" description="Field modifiers" />
1085   </Type>
1086 
1087   <Type name="OldObject" label="Old Object">
1088     <Field type="ulong" contentType="address" name="address" label="Memory Address" />
1089     <Field type="Class" name="type" label="Java Class" />
1090     <Field type="string" name="description" label="Object Description" description="Object description" />
1091     <Field type="Reference" name="referrer" label="Referrer Object" description="Object referencing this object" />
1092   </Type>
1093 
1094   <Type name="Reference" label="Reference">
1095     <Field type="OldObjectArray" name="array" label="Array Information" description="Array or null if it is not an array" />
1096     <Field type="OldObjectField" name="field" label="Field Information" description="Field or null if it is an array" />
1097     <Field type="OldObject" name="object" label="Object" description="Object holder for this reference" />
1098     <Field type="int" name="skip" label="Skip Value" description="The object is this many hops away" />
1099   </Type>
1100 
1101   <Type name="StackFrame">
1102     <Field type="Method" name="method" label="Java Method" />
1103     <Field type="int" name="lineNumber" label="Line Number" />
1104     <Field type="int" name="bytecodeIndex" label="Bytecode Index" />
1105     <Field type="FrameType" name="type" label="Frame Type" />
1106   </Type>
1107  
1108   <Relation name="JavaMonitorAddress"/>
1109   <Relation name="SafepointId"/>
1110   <Relation name="GcId"/>
1111   <Relation name="CompileId" />
1112   <Relation name="SweepId"/>
1113  
1114   <XmlType name="Package" parameterType="const PackageEntry*" fieldType="const PackageEntry*"/> 
1115   <XmlType name="Class" javaType="java.lang.Class" parameterType="const Klass*" fieldType="const Klass*"/> 
1116   <XmlType name="Module"  parameterType="const ModuleEntry*" fieldType="const ModuleEntry*"/> 
1117   <XmlType name="ClassLoader" parameterType="const ClassLoaderData*" fieldType="const ClassLoaderData*"/> 
1118   <XmlType name="Method" parameterType="const Method*" fieldType="const Method*"/> 
1119   <XmlType name="Thread" javaType="java.lang.Thread" parameterType="u8" fieldType="u8"/> 
1120   <XmlType name="Tickspan" contentType="tickspan" javaType="long" parameterType="const Tickspan&amp;" fieldType="Tickspan"/> 
1121   <XmlType name="Ticks" contentType="tickstamp" javaType="long" parameterType="const Ticks&amp;" fieldType="Ticks"/> 
1122   <XmlType name="ulong" javaType="long" unsigned="true" parameterType="u8" fieldType="u8"/> 
1123   <XmlType name="uint" javaType="int" unsigned="true" parameterType="unsigned" fieldType="unsigned"/> 
1124   <XmlType name="ushort" javaType="short" unsigned="true" parameterType="u2" fieldType="u2"/> 
1125   <XmlType name="ubyte" javaType="byte" unsigned="true" parameterType="u1" fieldType="u1"/> 
1126   <XmlType name="long" javaType="long" parameterType="s8" fieldType="s8"/> 
1127   <XmlType name="int" javaType="int" parameterType="s4" fieldType="s4"/> 
1128   <XmlType name="short" javaType="short" parameterType="s2" fieldType="s2"/> 
1129   <XmlType name="byte" javaType="byte"  parameterType="s1" fieldType="s1"/> 
1130   <XmlType name="double" javaType="double" parameterType="double" fieldType="double"/> 
1131   <XmlType name="float" javaType="float"  parameterType="float" fieldType="float"/> 
1132   <XmlType name="boolean" javaType="boolean" parameterType="bool" fieldType="bool"/> 
1133   <XmlType name="char" javaType="char" parameterType="char" fieldType="char"/> 
1134   <XmlType name="string" javaType="java.lang.String" parameterType="const char*" fieldType="const char*"/> 
1135  
1136   <XmlContentType name="bytes" annotation="jdk.jfr.DataAmount(BYTES)" />
1137   <XmlContentType name="tickstamp" annotation="jdk.jfr.Timestamp(TICKS)" />
1138   <XmlContentType name="epochmillis" annotation="jdk.jfr.Timestamp(MILLISECONDS_SINCE_EPOCH)" />
1139   <XmlContentType name="tickspan" annotation="jdk.jfr.Timespan(TICKS)" />
1140   <XmlContentType name="address" annotation="jdk.jfr.MemoryAddress" />
1141   <XmlContentType name="percentage" annotation="jdk.jfr.Percentage" />
1142   <XmlContentType name="millis" annotation="jdk.jfr.Timespan(MILLISECONDS)" />
1143   <XmlContentType name="nanos" annotation="jdk.jfr.Timespan(NANOSECONDS)" />
1144   <XmlContentType name="hertz" annotation="jdk.jfr.Frequency" />
1145   <XmlContentType name="bytes-per-second" annotation="jdk.jfr.DataAmount(BYTES), jdk.jfr.Frequency" />
1146   <XmlContentType name="bits-per-second" annotation="jdk.jfr.DataAmount(BITS), jdk.jfr.Frequency" />
1147  
1148 </Metadata>