Method and system for postponed error code checks

• US 9,026,857 B2
• Filed: 10/19/2012
• Issued: 05/05/2015
• Est. Priority Date: 10/19/2012
• Status: Active Grant

• Current Assignee: SAP SE
• Original Assignee: SAP SE
• Inventors: Becker, Philipp, Eble, Markus, Elfner, Tobias, Galkin, Ivan, Gasiunas, Vaidas, Harren, Arne, Kabala, Maciej, Kretzschmar, Klaus
• Primary Examiner(s): SCHELL, JOSEPH O
• Application Number:
  US13/656,091
• Publication Number:
  US 20140115402A1
• Time in Patent Office: 928 Days
• Field of Search: 714/35, 714/38.1, 714/38.13, 717/124, 717/133
• US Class Current: 714/38.1
• CPC Class Codes: G06F 11/0751 Error or fault detection not based on redundancy power supply failures G06F1/30; network fault management H04L41/06
• CPC Class Codes: G06F 11/0793 Remedial or corrective actions recovery from an exception in an instruction pipeline G06F9/3861; by retry G06F11/1402; for recovering from a failure of a protocol instance or entity H04L69/40
• CPC Class Codes: G06F 11/366 using diagnostics G06F11/0703 takes precedence

Abstract

According to some embodiments, a system and method for determining a value for an error code for a program operation; determining whether the operation supports postponing a determination of an occurrence of an error for the operation; proceeding to evaluate a next operation in an instance the operation does support postponing the determination of an occurrence of an error for the operation; and checking the error code for the operation in an instance the operation does not support postponing the determination of an occurrence of an error for the operation.

Claims

1. A computer implemented method, comprising:

determining, by a processor, a value for an error code for an executed program operation, the executed program operation being one of a plurality of processor-executable instructions of a set of program operations;

determining, by the processor, whether the executed program operation supports postponing a determination of an occurrence of an error for the executed program operation, the determining of whether the executed program operation supports postponing of the determination of an occurrence of an error for the executed program operation is based on the executed program operation being side-effect free;

proceeding to evaluate a next executed program operation of the plurality of processor-executable instructions of the set of program operations in an instance the executed program operation supports postponing the determination of an occurrence of an error for the executed program operation; and

checking determining whether the determined value for the error code for the executed program operation indicates an occurrence of a runtime error in an instance the executed program operation does not support postponing the determination of an occurrence of an error for the executed program operation.

2. The method of claim 1, further comprising determining a line associated with the error code.

3. The method of claim 1, wherein the determining of whether the executed program operation supports postponing the determination of an occurrence of an error for the executed program operation is implemented without creating a conditional branch.

4. The method of claim 1, further comprising associating, with the program operation, an indication that the program operation supports postponing a determination of an occurrence of an error for the executed program operation;

and

the determining of whether the executed program operation supports postponing a determination of an occurrence of an error for the executed program operation is based on the indication.

5. The method of claim 1, wherein the executed program operation being side-effect free includes the executed program instruction having a result that is free of having an impact on another operation, including a state of another operation.

6. The method of claim 1, wherein the determining of whether the executed program operation supports postponing a determination of an occurrence of an error for the executed program operation comprises determining whether a variable associated with the executed program operation is accessible to an error handling branch.

7. A system, comprising:

a memory having program instructions of a plurality of program operations of a set of program operations stored therein;

a processor in communication with the processor to execute the program instructions to;

determine, by the processor, a value for an error code for a first executed program operation of the plurality of program operations, the program operations being a processor-executable instruction;

determine, by the processor, whether the first executed program operation supports postponing a determination of an occurrence of an error for the first executed program operation, the determining of whether the executed program operation supports postponing of the determination of an occurrence of an error for the executed program operation is based on the executed program operation being side-effect free;

proceed to evaluate a second executed program operation of the plurality of program operations of the set of program operations in an instance the first executed program operation does support postponing the determination of an occurrence of an error for the first executed program operation; and

checking determining whether the determined value for the error code for the first executed program operation indicates an occurrence of a runtime error in an instance the first executed program operation does not support postponing the determination of an occurrence of an error for the first executed program operation.

8. The system of claim 7, further comprising the processor to determine a line associated with the error code.

9. The system of claim 7, wherein the determining of whether the first executed program operation supports postponing the determination of an occurrence of an error for the first executed program operation for the executed program operation is implemented without creating a conditional branch.

10. The system of claim 7, further comprising the processor to associate, with the first executed program operation, an indication that the first program operation supports postponing a determination of an occurrence of an error for the first executed program operation for the first executed program operation;

and

the determining of whether the first executed program operation supports postponing a determination of an occurrence of an error for the first executed program operation is based on the indication.

11. The system of claim 7, wherein the first executed program operation being side-effect free includes the executed program instruction having a result that is free of having an impact on another operation, including a state of another operation.

12. The system of claim 7, wherein the determining of whether the first executed program operation supports postponing a determination of an occurrence of an error for the first executed operation comprises determining whether a variable associated with the first executed program operation is accessible to an error handling branch.

13. A non-transitory computer-readable medium having program instruction stored thereon, the medium comprising:

instructions to determine a value for an error code for an executed program operation, the program operation being one of a plurality of processor-executable instructions of a set of program operations;

instructions to determine whether the executed program operation supports postponing a determination of an occurrence of an error for the executed program operation, the determining of whether the executed program operation supports postponing of the determination of an occurrence of an error for the executed program operation is based on the executed program operation being side-effect free;

instructions to proceed to evaluate a next executed program operation of the plurality of processor-executable instructions of the set of program operations in an instance the operation does support postponing the determination of an occurrence of an error for the executed program operation; and

instructions to check determine whether the determined value for the error code for the executed program operation indicates an occurrence of a runtime error in an instance the operation does not support postponing the determination of an occurrence of an error for the executed program operation.

14. The medium of claim 13, further comprising instructions to determine a line associated with the error code.

15. The medium of claim 13, wherein the determining of whether the executed program operation supports postponing the determination of an occurrence of an error for the executed program operation is implemented without creating a conditional execution branch.

16. The medium of claim 13, further comprising instructions to associate, with the program operation, an indication that the program operation supports postponing a determination of an occurrence of an error for the executed program operation;

and

the determining of whether the executed program operation supports postponing a determination of an occurrence of an error for the executed program operation is based on the indication.

17. The medium of claim 13, wherein the executed program operation comprises determining the operation being side-effect free includes the executed program instruction having a result that is free of having an impact on another operation, including a state of another operation.

18. The medium of claim 13, wherein the determining of whether the executed program operation supports postponing a determination of an occurrence of an error for the executed program operation comprises determining whether a variable associated with the executed program operation is accessible to an error handling branch.