com.oracle.svm.core.code

Class RuntimeCodeInfoMemory

java.lang.Object

com.oracle.svm.core.code.RuntimeCodeInfoMemory

public class RuntimeCodeInfoMemory
extends Object

Keeps track of CodeInfo structures of runtime-compiled methods (including invalidated and not yet freed ones) and releases their memory on tear-down.

Implementation: linear probing hash table adapted from OpenJDK IdentityHashMap.

All methods in here need to be either uninterruptible or it must be ensured that they are only called by the GC. This is necessary because the GC can invalidate code as well. So, it must be guaranteed that none of these methods is executed when a GC is triggered as we would end up with races between the application and the GC otherwise.

Constructor Summary

Constructors

Constructor and Description
RuntimeCodeInfoMemory()

Method Summary

Modifier and Type	Method and Description
void	add(CodeInfo info)
boolean	remove(CodeInfo info)
boolean	removeDuringGC(CodeInfo info)
static RuntimeCodeInfoMemory	singleton()
void	tearDown()
boolean	walkRuntimeMethods(RuntimeCodeCache.CodeInfoVisitor visitor)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RuntimeCodeInfoMemory

public RuntimeCodeInfoMemory()

Method Detail

singleton

public static RuntimeCodeInfoMemory singleton()

add

public void add(CodeInfo info)

remove

public boolean remove(CodeInfo info)

removeDuringGC

public boolean removeDuringGC(CodeInfo info)

walkRuntimeMethods

public boolean walkRuntimeMethods(RuntimeCodeCache.CodeInfoVisitor visitor)

tearDown

public void tearDown()