Package org.jctools.queues.atomic
Class JavaParsingAtomicLinkedQueueGenerator
java.lang.Object
com.github.javaparser.ast.visitor.VoidVisitorAdapter<Void>
org.jctools.queues.atomic.JavaParsingAtomicQueueGenerator
org.jctools.queues.atomic.JavaParsingAtomicLinkedQueueGenerator
- All Implemented Interfaces:
com.github.javaparser.ast.visitor.VoidVisitor<Void>
,JCToolsGenerator
- Direct Known Subclasses:
JavaParsingAtomicUnpaddedLinkedQueueGenerator
This generator takes in an JCTools 'LinkedQueue' Java source file and patches
Unsafe
accesses into
atomic AtomicLongFieldUpdater
. It outputs a Java source file with these patches.
An 'LinkedQueue' is one that is backed by a linked list and use a producerNode
and a
consumerNode
field to track the positions of each.
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Field Summary
FieldsFields inherited from class org.jctools.queues.atomic.JavaParsingAtomicQueueGenerator
GEN_DIRECTIVE_CLASS_CONTAINS_ORDERED_FIELD_ACCESSORS, GEN_DIRECTIVE_METHOD_IGNORE, sourceFileName
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionprivate String
private com.github.javaparser.ast.type.ClassOrInterfaceType
atomicRefArrayType
(com.github.javaparser.ast.type.ArrayType in) private com.github.javaparser.ast.body.FieldDeclaration
declareRefFieldUpdater
(String className, String variableName) Generates something likeprivate static final AtomicReferenceFieldUpdater
P_NODE_UPDATER = AtomicReferenceFieldUpdater.newUpdater(MpmcAtomicArrayQueueProducerNodeField.class, "producerNode"); (package private) String
fieldUpdaterFieldName
(String fieldName) private com.github.javaparser.ast.stmt.BlockStmt
fieldUpdaterGetAndSet
(String fieldUpdaterFieldName, String newValueName) Generates something likereturn P_INDEX_UPDATER.getAndSet(this, newValue)
static void
private com.github.javaparser.ast.expr.MethodCallExpr
newAtomicRefFieldUpdater
(String className, String variableName) private void
patchAtomicFieldUpdaterAccessorMethods
(com.github.javaparser.ast.body.ClassOrInterfaceDeclaration n) For each method accessor to a field, add in the calls necessary to AtomicFieldUpdaters.(package private) void
processSpecialNodeTypes
(com.github.javaparser.ast.nodeTypes.NodeWithType<?, com.github.javaparser.ast.type.Type> node, String name) Given a variable declaration of some sort, check it's name and type and if it looks like any of the key type changes between unsafe and atomic queues, perform the conversion to change it's type.void
void
void
void
void
Methods inherited from class org.jctools.queues.atomic.JavaParsingAtomicQueueGenerator
capitalise, classType, cleanupComments, declareLongFieldUpdater, fieldAssignment, fieldDeclarationWithInitialiser, fieldUpdaterCompareAndSet, fieldUpdaterLazySet, isCommentPresent, isRefArray, isRefType, methodCallExpr, newAtomicLongFieldUpdater, organiseImports, outputPackage, patchAtomicFieldUpdaterAccessorMethod, queueClassNamePrefix, removeStaticFieldsAndInitialisers, replaceParentClassesForAtomics, returnField, simpleParametricType, staticImportDeclaration, translateQueueName, visit, visit, visit
Methods inherited from class com.github.javaparser.ast.visitor.VoidVisitorAdapter
visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface org.jctools.queues.util.JCToolsGenerator
visit
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Field Details
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mpscLinkedQueueName
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Constructor Details
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JavaParsingAtomicLinkedQueueGenerator
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Method Details
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main
- Throws:
Exception
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visit
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atomicQueueName
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visit
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visit
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visit
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visit
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fieldUpdaterFieldName
- Specified by:
fieldUpdaterFieldName
in classJavaParsingAtomicQueueGenerator
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processSpecialNodeTypes
void processSpecialNodeTypes(com.github.javaparser.ast.nodeTypes.NodeWithType<?, com.github.javaparser.ast.type.Type> node, String name) Given a variable declaration of some sort, check it's name and type and if it looks like any of the key type changes between unsafe and atomic queues, perform the conversion to change it's type.- Specified by:
processSpecialNodeTypes
in classJavaParsingAtomicQueueGenerator
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patchAtomicFieldUpdaterAccessorMethods
private void patchAtomicFieldUpdaterAccessorMethods(com.github.javaparser.ast.body.ClassOrInterfaceDeclaration n) For each method accessor to a field, add in the calls necessary to AtomicFieldUpdaters. Only methods start with so/cas/sv/lv/lp/sp/xchg followed by the field name are processed. Clearlylv
,
lp
and
sv
are simple field accesses with only
so and
cas
using the AtomicFieldUpdaters.
- Parameters:
n
- the AST node for the containing class
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fieldUpdaterGetAndSet
private com.github.javaparser.ast.stmt.BlockStmt fieldUpdaterGetAndSet(String fieldUpdaterFieldName, String newValueName) Generates something likereturn P_INDEX_UPDATER.getAndSet(this, newValue)
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declareRefFieldUpdater
private com.github.javaparser.ast.body.FieldDeclaration declareRefFieldUpdater(String className, String variableName) Generates something likeprivate static final AtomicReferenceFieldUpdater
P_NODE_UPDATER = AtomicReferenceFieldUpdater.newUpdater(MpmcAtomicArrayQueueProducerNodeField.class, "producerNode"); -
newAtomicRefFieldUpdater
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atomicRefArrayType
private com.github.javaparser.ast.type.ClassOrInterfaceType atomicRefArrayType(com.github.javaparser.ast.type.ArrayType in)
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