MIGRATION ASSISTANCE USING COMPILER METADATA

• US 20140282439A1
• Filed: 05/02/2013
• Published: 09/18/2014
• Est. Priority Date: 03/14/2013
• Status: Active Grant

• Current Assignee: Red Hat, Inc. (International Business Machines Corporation)
• Original Assignee: Red Hat, Inc. (International Business Machines Corporation)
• Inventors: Kannan, Shakthi
• Granted Patent: US 9,223,570 B2
• Time in Patent Office: Days
• US Class Current: 717/140
• CPC Class Codes: G06F 8/76 Adapting program code to run in a different environment; Porting

Abstract

Systems and methods are migration assistance using compiler metadata. An example system includes a data module that receives data associated with a compiler. The data includes a set of rules associated with the compiler. The example system also includes an extraction module that extracts from the data, compiler metadata including the set of rules associated with the compiler. The example system further includes a database that stores the compiler metadata. The example system also includes a patch module that receives a program including source code, retrieves from the database the compiler metadata, and generates, without compiling the received program, a set of migration patches based on the received program and the compiler metadata. The set of migration patches includes one or more changes to the received program to abide by the set of rules associated with the compiler.

Claims

1. A system for migration assistance using compiler metadata, the system comprising:

a data module that receives data associated with a compiler, wherein the data includes a set of rules associated with the compiler;

an extraction module that extracts from the data, compiler metadata including the set of rules associated with the compiler;

a database that stores the compiler metadata; and

a patch module that receives a program including source code, retrieves from the database the compiler metadata, and generates, without compiling the received program, a set of migration patches based on the received program and the compiler metadata, wherein the set of migration patches includes one or more changes to the received program to abide by the set of rules associated with the compiler.

2. The system of claim 1, further comprising:

a generate module that enables a user to generate a second program by applying one or more migration patches of the first set of migration patches to the first program.

3. The system of claim 1, wherein the generate module enables the user to compile the second program using the compiler to generate a machine representation of the second program, and further enables the user to execute the machine representation of the second program, wherein a result of the compilation of the second program is indicated in the first set of migration patches.

4. The system of claim 1, further comprising:

a second data module that receives second data associated with a second compiler, wherein the second data includes a second set of rules associated with the second compiler;

a second extraction module that extracts from the second data, second compiler metadata including the second set of rules associated with the second compiler, wherein the database stores the second compiler metadata;

a compare module that compares the first and second compiler metadata, identifies one or more differences between the first and second compiler metadata based on the comparison, and stores the one or more differences into the database; and

a second patch module that receives a request for a second set of migration patches that includes one or more changes to the received program to abide by the second set of rules associated with the second compiler,

wherein in response to the request, the second patch module retrieves from the database the one or more differences between the first and second compiler metadata and generates, without compiling the received program, the second set of migration patches based on the received program and the one or more differences between the first and second compiler metadata.

5. The system of claim 4, further comprising:

a host machine that hosts a set of virtual machines including a first virtual machine and a second virtual machine,

wherein the first virtual machine includes the first data module, first extraction module, and first patch module and is coupled to the database, and

the second virtual machine includes the second data module, second extraction module, compare module, and second patch module and is coupled to the database.

6. The system of claim 4, further comprising:

an association module that receives an input specifying the first compiler as a first target compiler and specifying the second compiler as a second target compiler, identifies the first compiler metadata as being associated with the first target compiler, and identifies the second compiler metadata as being associated with the second target compiler.

7. The system of claim 4, wherein the first compiler has previously compiled the received program.

8. The system of claim 4, wherein the first and second compilers are of a common compiler type, and the second compiler is a newer version of the first compiler.

9. The system of claim 4, wherein the second patch module sends the second set of migration patches to a user.

10. The system of claim 4, further comprising:

a generate module that enables the user to generate a second program by applying one or more migration patches of the second set of migration patches to the first program.

11. The system of claim 10, wherein the generate module enables the user to compile the second program using the second compiler, and further enables the user to execute the second program, wherein a result of the compilation of the second program is indicated in the second set migration patches.

12. The system of claim 1, further comprising:

a host machine that hosts a set of virtual machines including a first virtual machine and a second virtual machine,

wherein the first virtual machine includes the first data module, first extraction module, and first patch module and is coupled to the database, and

the second virtual machine is coupled to the database and includes;

a second data module that receives second data associated with a second compiler, wherein the second data includes a second set of rules associated with the second compiler;

a second extraction module that extracts from the second data, second compiler metadata including the second set of rules associated with the second compiler, wherein the database stores the second compiler metadata; and

a second patch module that retrieves from the database the second compiler metadata, and generates, without compiling the received program, a second set of migration patches based on the received program and the second compiler metadata, wherein the second set of migration patches includes one or more changes to the received program to abide by the second set of rules associated with the second compiler.

13. The system of claim 1, wherein one or more changes to the received program avoids one or more warnings based on compilation of the received program using the compiler.

14. The system of claim 1, wherein one or more changes to the received program avoids one or more errors based on compilation of the received program using the compiler.

15. The system of claim 1, wherein the set of rules associated with the compiler are at least one of a set of syntax rules and a set of semantic rules.

16. A method of migration assistance using compiler metadata, the method comprising:

receiving, by one or more processors, data associated with a compiler, the data including a set of rules associated with the compiler;

extracting from the data, compiler metadata including the set of rules associated with the compiler;

storing the compiler metadata in a database;

receiving a program including source code;

retrieving from the database the compiler metadata; and

generating, without compiling the received program, a set of migration patches based on the received program and the compiler metadata, the set of migration patches including one or more changes to the received program to abide by the set of rules associated with the compiler.

17. The method of claim 16, comprising:

enabling a user to generate a second program by applying one or more migration patches of the first set of migration patches to the first program;

enabling the user to compile the second program using the compiler; and

enabling the user to execute the second program, a result of the compilation of the second program being indicated in the first set of migration patches.

18. The method of claim 16, comprising:

receiving second data associated with a second compiler, the second data including a second set of rules associated with the second compiler;

extracting from the second data, second compiler metadata including the second set of rules associated with the second compiler, wherein the database stores the second compiler metadata;

comparing the first and second compiler metadata;

identifying one or more differences between the first and second compiler metadata based on the comparison;

receiving a request for a second set of migration patches that includes one or more changes to the received program to abide by the second set of rules associated with the second compiler; and

generating, without compiling the received program, the second set of migration patches based on the received program and the one or more differences between the first and second compiler metadata.

19. The method of claim 18, further comprising:

enabling a user to generate a second program by applying one or more migration patches of the second set of migration patches to the first program;

enabling the user to compile the second program using the second compiler; and

enabling the user to execute the second program, a result of the compilation of the second program being indicated in the second set migration patches.

20. A non-transitory machine-readable medium comprising a plurality of machine-readable instructions that when executed by one or more processors are adapted to cause the one or more processors to perform a method comprising:

receiving data associated with a compiler, the data including a set of rules associated with the compiler;

extracting from the data, compiler metadata including the set of rules associated with the compiler;

storing the compiler metadata in a database;

receiving a program including source code;

retrieving from the database the compiler metadata; and

generating, without compiling the received program, a set of migration patches based on the received program and the compiler metadata, the set of migration patches including one or more changes to the received program to abide by the set of rules associated with the compiler.