Software mechanism for efficient compiling and loading of java server pages (JSPs)

• US 7,093,243 B2
• Filed: 10/09/2002
• Issued: 08/15/2006
• Est. Priority Date: 10/09/2002
• Status: Expired due to Fees

• Current Assignee: LinkedIn Corporation (Microsoft Corporation)
• Original Assignee: International Business Machines Corporation
• Inventors: Smet, Arthur Douglas, Bailey, Byron Lewis
• Primary Examiner(s): Dam, Tuan
• Assistant Examiner(s): RUTTEN, JAMES D
• Application Number:
  US10/267,966
• Publication Number:
  US 20040073552A1
• Time in Patent Office: 1,406 Days
• Field of Search: 717/134, 717165-167, 717/106, 717/148, 717/153, 718/1, 718100-108
• US Class Current: 717/166
• CPC Class Codes: G06F 9/445 Program loading or initiating bootstrapping G06F9/4401; security arrangements for program loading or initiating G06F21/57
• CPC Class Codes: G06F 9/45516 Runtime code conversion or optimisation

Abstract

Method and apparatus for processing java server pages (JSPs) which reduces the delays resulting from a first time invocation of a JSP. One embodiment provides a method for processing JSPs for a java virtual machine (JVM), comprising: selecting one or more JSP files to be processed for the JVM; translating the JSP files to java source code files; inserting quick exit codes to java source code files; compiling java source code files to servlet class files; and loading servlet class files into the JVM.

Claims

1. A method for processing Java®

server pages, comprising;

selecting at least one Java®

server page to be processed, prior to receiving any client requests for the at least one Java®

server page;

translating the at least one Java®

server page into a Java®

source code file;

inserting a quick exit code into the Java®

source code file;

compiling the Java®

source code files to generate a servlet;

loading the servlet into a memory of a virtual machine and

invoking the servlet on the virtual machine, wherein the quick exit code causes the servlet to exit before a service method associated with the servlet is invoked.

2. The method of claim 1, wherein the Java®

server pages are processed during an initialization of a Web application.

3. The method of claim 1, further comprising selecting the at least one Java®

server page by selecting server pages which exceed a size threshold value.

4. The method of claim 1, further comprising generating a direct executable via just in time optimization.

5. The method of claim 1, further comprising spawning a plurality of threads to process the selected Java®

server pages.

6. The method of claim 5, wherein a thread count initialization parameter specifies a number of threads to be spawned.

7. A computer readable medium containing a program which, when executed, performs an operation, comprising:

selecting at least one Java®

server page to be processed;

translating the at least one Java®

server page into a Java®

source code file;

inserting a quick exit code into the Java®

source code file;

compiling the java®

source code files to generate a servlet;

loading the servlet into a memory of a virtual machine; and

invoking the servlet on the virtual machine, wherein the quick exit code causes the servlet to exit before a service method associated with the servlet is invoked.

8. The computer readable medium of claim 7, wherein the operation further comprises selecting the at least one Java®

server page by selecting server pages file which exceed a size threshold value.

9. The computer readable medium of claim 7, wherein the operation further comprises generating a direct executable via just in time optimization.

10. The computer readable medium of claim 7, wherein the operation further comprises spawning a plurality of threads to process the selected Java®

server pages.

11. A computer for processing one or more Java®

server pages, comprising;

an application server computer comprising one or more processors and a memory, the memory containing a Java®

server pages processor and a virtual machine, wherein the Java®

server pages processor is configured to;

select at least one of the Java®

server pages to be processed;

translate the Java®

server page file into a Java®

source code file;

insert quick exit codes into the Java source code file;

compile the Java®

source code file to generate a servlet;

selectively load one or more servlets generated from the one or more Java®

server pages into a memory of the virtual machine prior to a user request for one of the Java®

server pages; and

invoke the servlet on the virtual machine, wherein the quick exit codes cause the servlet to exit before a service method associated with the servlet is invoked.

12. The computer of claim 11, wherein the memory further comprises a servlet engine for initializing a web application which utilizes the one or more Java™

server pages.

13. The computer system of claim 12, wherein the servlet engine is configured to spawn a plurality of threads to process the Java™

server pages.

14. The computer of claim 11, wherein the Java®

server pages processor is further configured to select the Java®

server pages by selecting a server pages which exceed a size threshold value.

15. The computer of claim 11, wherein the Java®

server pages processor is further configured to generate a direct executable via just in time optimization.

16. A method for processing Java®

server pages, comprising;

initializing a web application that includes a virtual machine;

selecting at least one Java®

server pages to be processed for the virtual machine, wherein the at least one Java®

server pages is selected by selecting server pages which exceed a size threshold value;

translating the Java®

server pages into a Java®

source code file;

inserting a quick exit code into the Java®

source code file;

compiling the Java®

source code file to generate a servlet;

loading the servlet into a memory of the virtual machine; and

invoking the servlet on the virtual machine, wherein the quick exit code causes the servlet to exit before a service method associated with the servlet is invoked.

17. The method of claim 16, further comprising generating a direct executable via just in time optimization.

18. The method of claim 16, further comprising spawning a plurality of threads to process the selected Java®

server pages.