metaspace.json

{
  "basic": {
    "version": "JDK11",
    "used": 1234,
    "max": 4567,
    "timestamp": 35783292
  },
  "symbols": [
    {
      "id": 123,
      "value": "foo"
    },
    {
      "id": 125,
      "value": "bar"
    }
  ],
  "cld": [
    {
      "name": "bootstrap",
      "unloading": false,
      "keep_alive": true,
      "classes": [
        11,
        22
      ]
    }
  ],
  "class": [
    {
      "id": 11,
      "name": "java/security/BasicPermissionCollection",
      "super": "java/lang/Object",
      "access_flag": 5,
      "method": [
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        23
      ],
      "interface": [],
      "field": [
        {
          "name": "fd1",
          "signature": "I",
          "init_value": 252
        }
      ],
      "annotation": [],
      "constantpool": [
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      ],
      "vtable_len": 6,
      "itable_len": 5,
      "init_state": 3,
      "init_thread": {},
      "method_ordering": []
    }
  ],
  "method": [
    {
      "id": 11,
      "name": "add",
      "access_flag": 6,
      "descriptor": "(Ljava/security/Permission;)V",
      "max_local": 3,
      "max_stack": 5,
      "max_param": 5,
      "bytecodes": [
        2,
        5,
        9
      ],
      "interal_flag": "force_inline",
      "intrinsic_id": 6,
      "method_data": [],
      "method_counter": [
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      "native_code": [
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        5,
        6,
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        6,
        7,
        8,
        7,
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      ]
    }
  ],
  "constantpool": [
    {
      "id": 22,
      "slot": [
        {
          "tag": "JVM_CONSTANT_Class",
          "data": [
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            5
          ]
        },
        {
          "tag": "JVM_CONSTANT_Integer",
          "data": [
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          ]
        },
        {
          "tag": "JVM_CONSTANT_UTF8",
          "data": [
            2,
            5,
            9,
            8
          ]
        }
      ]
    }
  ],
  "method_counter": [
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      "invocation_counter": 3453,
      "backedge_counter": 6654,
      "rate": 3.65,
      "highest_comp_level": 4
    }
  ],
  "method_data": [/*...*/],
  "annotation": [/*...*/]
}