System and method for data processing

Patent metadata

Field	Value
Publication number	US-10877899-B2
Application number	US-202016893201-A
Country	US
Kind code	B2
Filing date	Jun 4, 2020
Priority date	Jun 28, 2019
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for data processing are provided. One of the methods includes: obtaining a bytecode compiled from source code comprising one or more input parameters, the source code including an encoding function to encode the one or more input parameters, save the encoded one or more input parameters in a memory segment, and provide a memory location of the memory segment; executing, according to the bytecode, the encoding function to encode the one or more input parameters to obtain the memory location of the memory segment storing the encoded one or more input parameters; and providing the memory location to a function for retrieving and decoding the encoded one or more input parameters to obtain the one or more input parameters.

First claim

The invention claimed is:

1. A computer-implemented method for data processing, comprising:
obtaining, by a virtual machine, bytecode compiled from source code, wherein the source code includes one or more input parameters and an encoding function configured to encode the one or more input parameters, save the encoded one or more input parameters in a memory segment, and provide a memory location of the memory segment, and wherein the memory location comprises an address corresponding to the memory segment;
at the virtual machine, encoding the one or more input parameters, saving the encoded one or more input parameters in the memory segment, and obtaining the memory location of the memory segment storing the encoded one or more input parameters by executing the encoding function according to the bytecode; and
providing, by the virtual machine, the memory location to a function configured to retrieve and decode the encoded one or more input parameters to obtain the one or more input parameters.

2. The method of claim 1 , wherein the address in the bytecode is shifted by the compilation from the source code.

3. The method of claim 2 , further comprising:
restoring, by the virtual machine, the shifted address according to a storage starting location of the virtual machine and an address shift obtained by the virtual machine;
retrieving, by the virtual machine, the encoded one or more input parameters according to the restored address; and
decoding, by the virtual machine, the encoded one or more input parameters to retrieve the one or more input parameters.

4. The method of claim 1 , wherein at least one of the one or more input parameters comprises a pointer type variable.

5. The method of claim 4 , wherein the pointer type variable comprises a multiple indirection type variable.

6. The method of claim 1 , wherein the memory location of the memory segment comprises a pointer corresponding to a starting or ending address of the memory segment and a data length corresponding to the memory segment.

7. The method of claim 1 , wherein the memory location of the memory segment comprises a first pointer corresponding to a starting address of the memory segment and a second pointer corresponding to an ending address of the memory segment.

8. The method of claim 1 , wherein obtaining the bytecode compiled from the source code comprises:
obtaining, from a computing device, the bytecode compiled by a compiler associated with the computing device from the source code.

9. The method of claim 8 , wherein the virtual machine and the compiler have different word sizes.

10. The method of claim 1 , wherein the virtual machine is based on a WebAssembly (WASM) format.

11. The method of claim 1 , further comprising:
invoking a different function based on the one or more input parameters to return one or more output parameters of the different function, wherein the one or more output parameters correspond to a state of a blockchain; and
encoding the one or more output parameters.

12. A non-transitory computer-readable storage medium storing instructions executable by one or more processors, wherein execution of the instructions causes the one or more processors to perform operations comprising:
obtaining, by a virtual machine, bytecode compiled from source code, wherein the source code includes one or more input parameters and an encoding function configured to encode the one or more input parameters, save the encoded one or more input parameters in a memory segment, and provide a memory location of the memory segment, and wherein the memory location comprises an address corresponding to the memory segment;
at the virtual machine, encoding the one or more input parameters, saving the encoded one or more input parameters in the memory segment, and obtaining the memory location of the memory segment storing the encoded one or more input parameters by executing the encoding function according to the bytecode; and
providing, by the virtual machine, the memory location to a function configured to retrieve and decode the encoded one or more input parameters to obtain the one or more input parameters.

13. The non-transitory computer-readable storage medium of claim 12 , wherein the address in the bytecode is shifted by the compilation from the source code.

14. The non-transitory computer-readable storage medium of claim 13 , wherein the operations further comprise:
restoring, by the virtual machine, the shifted address according to a storage starting location of the virtual machine and an address shift obtained by the virtual machine;
retrieving, by the virtual machine, the encoded one or more input parameters according to the restored address; and
decoding, by the virtual machine, the encoded one or more input parameters to retrieve the one or more input parameters.

15. The non-transitory computer-readable storage medium of claim 12 , wherein at least one of the one or more input parameters comprises a pointer type variable.

16. The non-transitory computer-readable storage medium of claim 15 , wherein the pointer type variable comprises a multiple indirection type variable.

17. The non-transitory computer-readable storage medium of claim 12 , wherein the memory location of the memory segment comprises a pointer corresponding to a starting or ending address of the memory segment and a data length corresponding to the memory segment.

18. The non-transitory computer-readable storage medium of claim 12 , wherein the memory location of the memory segment comprises a first pointer corresponding to a starting address of the memory segment and a second pointer corresponding to an ending address of the memory segment.

19. The non-transitory computer-readable storage medium of claim 12 , wherein the virtual machine is based on a WebAssembly (WASM) format.

20. A system, comprising one or more processors and one or more non-transitory computer-readable memories coupled to the one or more processors and configured with instructions executable by the one or more processors to cause the system to perform operations comprising:
obtaining, by a virtual machine, bytecode compiled from source code, wherein the source code includes one or more input parameters and an encoding function configured to encode the one or more input parameters, save the encoded one or more input parameters in a memory segment, and provide a memory location of the memory segment, and wherein the memory location comprises an address corresponding to the memory segment;
at the virtual machine, encoding the one or more input parameters, saving the encoded one or more input parameters in the memory segment, and obtaining the memory location of the memory segment storing the encoded one or more input parameters by executing the encoding function according to the bytecode; and
providing, by the virtual machine, the memory location to a function configured to retrieve and decode the encoded one or more input parameters to obtain the one or more input parameters.

Assignees

• Advanced New Technologies Co Ltd

Inventors

• Li Dongwei

Classifications

• H04L9/50

  using hash chains, e.g. blockchains or hash trees · CPC title

• G06F16/23

  Updating · CPC title

• G06F8/41 Primary

  Compilation · CPC title

• G06F12/10 Primary

  Address translation · CPC title

• G06F9/45533

  Hypervisors; Virtual machine monitors · CPC title