Module heap_dump

Sub records contained in crate::HeapDumpSegment records.

Performance

Since sub records do not have a length prefix like records do, they cannot be almost entirely lazily parsed – the contents of the sub record must be parsed to know how long a sub record is. That said, it is still reasonably fast at approximately 1GiB/s per core, and there is room to make parsing lazier should the need arise.

Structs

Class

Analogous to a java.lang.Class object.

FieldDescriptor

The name and type of an instance field.

FieldDescriptors

Iterator over FieldDescriptors.

GcRootBusyMonitor

GcRootJavaStackFrame

GcRootJniGlobal

GcRootJniLocalRef

GcRootNativeStack

GcRootSystemClass

GcRootThreadBlock

GcRootThreadObj

GcRootUnknown

Instance

An instance of a reference type (i.e. not a primitive).

NullableIds

Iterator over object ids that may be null, represented as Option<Id>.

ObjectArray

An array of anything other than a primitive type.

PrimitiveArray

An array of JVM primitive types (int, long, and so forth).

StaticFieldEntries

Iterator over StaticFieldEntry for a Class.

StaticFieldEntry

The field type and value for a static field in a Class.

Enums

FieldType

FieldValue

PrimitiveArrayType

SubRecord