Oracle International Corporation

Christian Humer

Daniele Bonetta

Hassan Chafi

Laurent Daynes

Matthias Brantner

Alexander Jordan

Matthias Neugschwandtner

Bastian Hossbach

Jakub Chaloupka

Jacob Kreindl

Jürgen Christ

Domain specific inlining for interpreters includes obtaining an interpreter source code including compiler directives. A host compilation is performed on the interpreter source code to obtain a compiled interpreter. Performing host compilation includes inlining code blocks based on the plurality of compiler directives. The compiled interpreter is outputted.

Domain specific inlining for interpreters

A method may include generating, by a source isolate, an external object reference, passing, by the source isolate, the external object reference to a target isolate, storing, by the source isolate and in an exported reference table, an entry that maps the external object reference to an object stored in a heap of the source isolate, performing, by the target isolate, a task that accesses the object using the external object reference, receiving, by the source isolate and from a finalizer of the external object reference, a notification that the external object reference has become unreferenced, and in response to the notification, removing, by the source isolate, the entry from the exported reference table.

Securely connecting isolated managed heaps

A method may include determining that a non-constant value of a variable corresponding to a variable node of the abstract syntax tree flows into an operator node in the abstract syntax tree. The method may further include adding, to the abstract syntax tree, a check taint node including functionality to: make a taint status determination that the non-constant value is tainted, and return the non-constant value to the operator node. The operator node generates a result value by executing an operator using the non-constant value. The method may further include adding, to the abstract syntax tree, a set taint node that stores, based on the taint status determination, the result value in a second tainted object, and performing, using the abstract syntax tree, a taint analysis of the source code to identify a vulnerability in the source code.

Dynamic taint tracking in abstract syntax tree interpreters

Computer-implemented techniques described herein provide efficient data decoding using runtime specialization. In an embodiment, a method comprises a virtual machine executing a body of code of a dynamically typed language, wherein executing the body of code includes: querying a relational database, and in response to the query, receiving table metadata indicating data types of one or more columns of a first table in the relational database. In response to receiving the table metadata: for a first column of the one or more columns, generating decoding machine code to decode the first column based on the data type of the first column, and executing the decoding machine code to decode the first column of the one or more columns.

Efficient data decoding using runtime specialization

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Zurich, Switzerland

Christian Humer