Systems, methods, and computer-readable media for using immutable and copy-on-write data semantics to optimize record and replay frameworks

Patent metadata

Field	Value
Publication number	US-10268567-B2
Application number	US-201715485458-A
Country	US
Kind code	B2
Filing date	Apr 12, 2017
Priority date	Apr 12, 2017
Publication date	Apr 23, 2019
Grant date	Apr 23, 2019

Abstract

Systems, methods, and computer-readable media are disclosed for using managed runtime environment semantics to optimize record and replay frameworks. One method includes: executing, by the computing system, a managed runtime component; interacting, by the computing system, with another system during the execution of the managed runtime component; determining, by the computing system, whether a non-deterministic event is to be logged in event logs during the execution of the managed runtime component; determining, by the computing system when the non-deterministic event is to be logged, whether semantics of the non-deterministic event to be logged includes a predetermined semantic, wherein the predetermined semantic includes one or more of optimistic zero copy actions; and logging, by the computing system when the semantics of the non-deterministic event includes the predetermined semantic, a copy of contents of the non-deterministic event in event logs during the execution of the managed runtime component.

First claim

What is claimed is:

1. A computer-implemented method for using managed runtime environment semantics to optimize record and replay frameworks, the method comprising:
executing, by a computing system, a managed runtime component;
interacting, by the computing system, with another system during the execution of the managed runtime component;
determining, by the computing system, whether a non-deterministic event is to be logged in event logs during the execution of the managed runtime component;
determining, by the computing system when the non-deterministic event is to be logged, whether semantics of the non-deterministic event to be logged include a predetermined semantic, wherein the predetermined semantic includes one or more of optimistic zero copy actions; and
logging, by the computing system when the semantics of the non-deterministic event include the predetermined semantic, a copy of contents of the non-deterministic event in the event logs during the execution of the managed runtime component.

2. The method according to claim 1 , wherein the one or more of optimistic zero copy actions includes an immutable semantic pointer save.

3. The method according to claim 1 , wherein the one or more of optimistic zero copy actions includes a copy-on-write (“COW”) semantic pointer save.

4. The method according to claim 1 , wherein when the non-deterministic event having the semantics that include the one or more optimistic zero copy actions is on demand, values of the contents of the non-deterministic event are, on demand, copied into the event logs for storage or transmission.

5. The method according to claim 1 , further comprising:
recording, by the computing system, a sequence of snapshots of the managed runtime environment during the execution of the managed runtime component.

6. The method according to claim 5 , further comprising:
performing, by the computing system, time travel debugging by replaying at least a portion of the execution of the managed runtime component based at least in part on a snapshot from the sequence of snapshots and at least a portion of the event logs.

7. The method according to claim 5 , further comprising:
performing, by the computing system, automated failure root-cause analysis by replaying at least a portion of the execution of the managed runtime component based at least in part on a snapshot from the sequence of snapshots and at least a portion of the event logs.

8. The method according to claim 5 , further comprising:
performing, by the computing system, memory use analysis by replaying at least a portion of the execution of the managed runtime component based at least in part on a snapshot from the sequence of snapshots and at least a portion of the event logs.

9. A computing system for using managed runtime environment semantics to optimize record and replay frameworks, the system comprising:
at least one processor; and
memory comprising a managed runtime environment executable by the at least one processor, wherein the managed runtime environment, when executed by the at least one processor:
executes a managed runtime component;
interacts with another system during the execution of the managed runtime component;
determines whether a non-deterministic event is to be logged in event logs during the execution of the managed runtime component;
determines, when the non-deterministic event is to be logged, whether semantics of the non-deterministic event to be logged include a predetermined semantic, wherein the predetermined semantic includes one or more of optimistic zero copy actions; and
logs, when the semantics of the non-deterministic event include the predetermined semantic, a copy of contents of the non-deterministic event in the event logs during the execution of the managed runtime component.

10. The system according to claim 9 , wherein the one or more of optimistic zero copy actions includes an immutable semantic pointer save.

11. The system according to claim 9 , wherein the one or more of optimistic zero copy actions includes a copy-on-write (“COW”) semantic pointer save.

12. The system according to claim 9 , wherein when the non-deterministic event having the semantics that include the one or more optimistic zero copy actions is on demand, values of the contents of the non-deterministic event are, on demand, copied into the event logs for storage or transmission.

13. The system according to claim 9 , wherein the managed runtime environment, when executed by the at least one processor further:
records a sequence of snapshots of the managed runtime environment during the execution of the managed runtime component.

14. The system according to claim 13 , wherein the managed runtime environment, when executed by the at least one processor further:
performs time travel debugging by replaying at least a portion of the execution of the managed runtime component based at least in part on a snapshot from the sequence of snapshots and at least a portion of the event logs.

15. The system according to claim 13 , wherein the managed runtime environment, when executed by the at least one processor further:
performs automated failure root-cause analysis by replaying at least a portion of the execution of the managed runtime component based at least in part on a snapshot from the sequence of snapshots and at least a portion of the event logs.

16. The system according to claim 13 , wherein the managed runtime environment, when executed by the at least one processor further:
performs memory use analysis by replaying at least a portion of the execution of the managed runtime component based at least in part on a snapshot from the sequence of snapshots and at least a portion of the event logs.

17. A non-transitory computer-readable medium storing instructions that, when executed by a computing system, cause the computing system to perform a method for using managed runtime environment semantics to optimize record and replay frameworks, the method including:
executing, by the computing system, a managed runtime component;
interacting, by the computing system, with another system during the execution of the managed runtime component;
determining, by the computing system, whether a non-deterministic event is to be logged in event logs during the execution of the managed runtime component;
determining, by the computing system when the non-deterministic event is to be logged, whether semantics of the non-deterministic event to be logged include a predetermined semantic, wherein the predetermined semantic includes one or more of optimistic zero copy actions; and
logging, by the computing system when the semantics of the non-deterministic event include the predetermined semantic, a copy of contents of the non-deterministic event in the event logs during the execution of the managed runtime component.

18. The computer-readable medium of claim 17 , wherein the one or more of optimistic zero copy actions includes an immutable semantic pointer save.

19. The computer-readable medium of claim 17 , wherein the one or more of optimistic zero copy actions includes a copy-on-write (“COW”) semantic pointer save.

20. The computer-readable medium of claim 17 , wherein when the non-deterministic event having the semantics that include the one or more optimistic zero copy actions is on demand, values of the contents of the non-deterministic event are, on demand, copied into the event logs for storage or transmission.

Assignees

• Microsoft Technology Licensing Llc

Inventors

• Marron Mark

Classifications

• G06F11/079

  Root cause analysis, i.e. error or fault diagnosis (in a hardware test environment G06F11/22; in a software test environment G06F11/36) · CPC title

• G06F11/3628 Primary

  of optimised code (optimisation G06F8/443) · CPC title

• G06F11/3414

  Workload generation, e.g. scripts, playback · CPC title

• G06F11/0778 Primary

  Dumping, i.e. gathering error/state information after a fault for later diagnosis · CPC title