SIMULATING SYNCHRONOUS EXECUTION OF ASYNCHRONOUS OPERATIONS

• US 20140115024A1
• Filed: 10/24/2012
• Published: 04/24/2014
• Est. Priority Date: 10/24/2012
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola Mobility LLC (Lenovo Group Ltd.)
• Inventors: Kriesing, Wolfram
• Granted Patent: US 9,317,322 B2
• Time in Patent Office: Days
• US Class Current: 709/201
• CPC Class Codes: G06F 9/45512 Command shells
• CPC Class Codes: G06F 9/4843 by program, e.g. task dispatcher, supervisor, operating system

Abstract

A computer-implemented method is presented here. The method obtains a script to be executed, wherein the script includes instructions for an asynchronous operation, and wherein the asynchronous operation includes a request calling for a result. The method continues by performing a provisional iteration of the script, wherein the provisional iteration of the script is associated with at least a portion of the script, and wherein the provisional iteration of the script obtains and saves the result as a cached result. Thereafter, a final iteration of the script is performed using the cached result.

Claims

1. A computer-implemented method comprising:

obtaining a script to be executed, the script comprising instructions for an asynchronous operation, wherein the asynchronous operation includes a request calling for a result;

performing a provisional iteration of the script, wherein the provisional iteration of the script is associated with at least a portion of the script, and wherein the provisional iteration of the script obtains and saves the result as a cached result; and

thereafter, performing a final iteration of the script using the cached result.

2. The computer-implemented method of claim 1, wherein the script further comprises instructions for at least one synchronous operation.

3. The computer-implemented method of claim 1, wherein:

the asynchronous operation includes a request calling for a corresponding result generated by a remote computing device.

4. The computer-implemented method of claim 1, wherein:

the script to be executed comprises sequential lines of code;

the asynchronous operation is defined by a respective one of the lines of code;

each provisional iteration of the script is performed sequentially in accordance with the sequential lines of code; and

the final iteration of the script is performed sequentially in accordance with the sequential lines of code.

5. The computer-implemented method of claim 1, wherein:

the script to be executed comprises sequential lines of code;

the asynchronous operation is defined by a respective one of the lines of code;

each provisional iteration of the script begins at a beginning line of code of the sequential lines of code; and

the final iteration of the script begins with the beginning line of code.

6. The computer-implemented method of claim 1, wherein, for each provisional iteration of the script, the method comprises:

sequentially executing the script until arriving at an instruction for a first asynchronous operation;

determining whether the corresponding result for the first asynchronous operation is already saved as a first cached result;

when the corresponding result for the first asynchronous operation is already saved as a first cached result, retrieving and using the first cached result without issuing another request for the first cached result; and

when the corresponding result for the first asynchronous operation is not already saved as a first cached result, performing the first asynchronous operation and issuing a request for the corresponding result.

7. The computer-implemented method of claim 1, wherein, for each provisional iteration of the script, the method comprises:

sequentially executing the script until arriving at an instruction for a first asynchronous operation; and

when the corresponding result for the first asynchronous operation is not already saved as a first cached result, terminating execution of the script.

8. The computer-implemented method of claim 7, further comprising, when the corresponding result for the first asynchronous operation is not already saved as a first cached result:

receiving a requested result corresponding to the first asynchronous operation; and

caching the requested result for use as the first cached result during either a subsequent provisional iteration of the script or the final iteration of the script.

9. A non-transitory computer-readable storage medium with executable instructions stored thereon, wherein the executable instructions instruct a processor to manage a script having a plurality of asynchronous operations including at least a first asynchronous operation and a second asynchronous operation, wherein each of the asynchronous operations calls for a corresponding result such that completion of the script is associated with a plurality of results, and wherein the executable instructions instruct the processor to perform a method comprising:

performing a first provisional iteration of the script to execute the first asynchronous operation and issue a first request calling for a first result;

terminating execution of the first provisional iteration of the script;

receiving the first result in response to issuing the first request;

caching the received first result to obtain a cached first result;

thereafter, performing a second provisional iteration of the script, wherein the second provisional iteration of the script uses the cached first result, executes the second asynchronous operation, and issues a second request for a second result;

terminating execution of the second provisional iteration of the script;

receiving the second result in response to issuing the second request;

caching the received second result to obtain a cached second result; and

thereafter, performing a final iteration of the script using the cached first result and the cached second result.

10. The non-transitory computer-readable storage medium of claim 9, wherein the script further comprises a synchronous operation.

11. The non-transitory computer-readable storage medium of claim 10, wherein:

performing the first provisional iteration of the script executes the synchronous operation.

12. The non-transitory computer-readable storage medium of claim 10, wherein:

performing the second provisional iteration of the script executes the synchronous operation.

13. The non-transitory computer-readable storage medium of claim 9, wherein:

the script comprises sequential lines of code;

each of the asynchronous operations is defined by a respective one of the lines of code;

each provisional iteration of the script is performed sequentially in accordance with the sequential lines of code; and

the final iteration of the script is performed sequentially in accordance with the sequential lines of code.

14. The non-transitory computer-readable storage medium of claim 9, wherein:

the script comprises sequential lines of code;

each of the asynchronous operations is defined by a respective one of the lines of code;

each provisional iteration of the script begins at a beginning line of code of the sequential lines of code; and

the final iteration of the script begins with the beginning line of code.

15. The non-transitory computer-readable storage medium of claim 9, wherein the second provisional iteration of the script uses the cached first result without issuing another request for the first result.

16. The non-transitory computer-readable storage medium of claim 9, wherein the final iteration of the script uses the cached first result without issuing another request for the first result, and uses the cached second result without issuing another request for the second result.

17. A computer-implemented method of simulating synchronous execution of asynchronous operations, the method comprising:

obtaining an executable script comprising sequential operations beginning with an initial operation and including at least a first asynchronous operation and a second asynchronous operation;

performing a first provisional iteration of the script to execute at least some of the sequential operations, beginning with the initial operation and continuing until execution of the first asynchronous operation;

terminating the first provisional iteration of the script in response to execution of the first asynchronous operation;

caching a first result generated in response to execution of the first asynchronous operation;

thereafter, performing a second provisional iteration of the script to execute at least some of the sequential operations, beginning with the initial operation and continuing until execution of the second asynchronous operation;

terminating the second provisional iteration of the script in response to execution of the second asynchronous operation; and

caching a second result generated in response to execution of the second asynchronous operation.

18. The method of claim 17, further comprising:

performing a final iteration of the script after caching the second result, wherein performing the final iteration of the script begins with the initial operation and uses the cached first result and the cached second result.

19. The method of claim 17, wherein performing the second provisional iteration of the script uses the cached first result without re-executing the first asynchronous operation.

20. The method of claim 17, wherein:

the first asynchronous operation is executed at a first computing device to issue a request to a second computing device;

the method further comprises the first computing device receiving the first result from the second computing device in response to issuing the request; and

caching the first result comprises caching the first result received from the second computing device.