Runtime Type Verification Metadata Generation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing runtime type verification methods are inefficient as they require repeated examination of static and structural constraints during runtime, which can lead to performance issues and increased computational overhead.
Innovation Solution
The generation and use of verification metadata during an initial verification process, where a class loader verifies runtime types and stores constraints, allowing subsequent verifications to rely on stored metadata to confirm adherence to these constraints without re-examining the types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If runtime type verification repeatedly examines static and structural constraints during runtime, then verification accuracy is maintained, but computational overhead increases and performance decreases
Solution Approach 1:
The patent applies preliminary action by performing verification of static and structural constraints during class loading phase before runtime execution. The class loader verifies constraints and generates verification metadata in advance, so that during runtime, the JVM can directly use the pre-verified metadata without re-examining constraints, thus maintaining verification accuracy while improving runtime performance
Solution Approach 2:
The patent uses copying by creating verification metadata that replicates the results of constraint verification. Instead of repeatedly examining original constraints during runtime, the system copies the verification results into metadata structures that can be quickly accessed and validated during runtime execution
2Manufacturing precision
If runtime type verification performs complete constraint checks during runtime, then verification thoroughness is ensured, but processing time increases
Solution Approach 1:
The patent performs complete constraint verification during the class loading phase before runtime execution. The class loader thoroughly checks static and structural constraints and stores the verification results in metadata, eliminating the need for repeated thorough checks during runtime and significantly reducing verification processing time
Solution Approach 2:
The patent segments the verification process into two distinct phases: (1) class loading phase where complete constraint verification is performed, and (2) runtime phase where pre-verified metadata is used. This segmentation allows thorough verification to be performed once during loading while enabling fast verification during runtime
Data Source
AI summary
Operations include (a) receiving a request to verify a first runtime type loaded based on a first runtime type reference; (b) identifying verification metadata comprising a stored assignable relationship between a second runtime type reference and a third runtime type reference; (c) determining whether an actual assignable relationship between a second runtime type and a third runtime type adheres to the stored assignable relationship between the second runtime type reference and the third runtime type reference; and (d) responsive at least to determining that the actual assignable relationship adheres to the stored assignable relationship, determining that the first runtime type is verified based on the verification metadata.