Method of automatically virtualizing core native libraries of a virtual machine
View Patent ↗A method of automatically virtualizing core native libraries of a virtual machine is disclosed. In an embodiment, the virtual machine is a java virtual machine (JVM). In this technique, the interface between the virtual machine and the core native libraries is controlled, since multiple instances of a core native library are loaded into the same process based on the number of co-located applications. Moreover, the interactions between the core native libraries and the underlying operating system (OS) are controlled so that a single point of contact is presented to the OS. Also, the dependencies the core native libraries may have on the virtual machine are handled.
1. A method of virtualizing a plurality of core native libraries of a virtual machine, said method comprising:
generating a proxy library for controlling an interface between said virtual machine and said plurality of core native libraries and loading multiple instances of a subset of said plurality of core native libraries for each application co-located in a process, and for forwarding function downcalls to a subgroup of said multiple instances; and
generating a forwarding library for each of said multiple instances to forward appropriate operating system calls and appropriate function upcalls from said multiple instances to said virtual machine.
2. The method as recited in claim 1 wherein said virtual machine is a java virtual machine.
3. The method as recited in claim 1 wherein said forwarding function downcalls is based on an application identifier.
4. The method as recited in claim 1 wherein said process is in a Solaris Operating Environment platform.
5. The method as recited in claim 4 wherein generating a proxy library further includes loading said multiple instances using a dlmopen( ) function.
6. The method as recited in claim 1 wherein said proxy library is loaded in the context of the virtual machine.
7. The method as recited in claim 1 wherein said forwarding library associated with each of said multiple instances differs from the forwarding library associated with the remaining instances of said multiple instances.
8. A computer-readable medium comprising computer-executable instructions stored therein for virtualizing a plurality of core native libraries of a virtual machine, said medium comprising:
code to generate a proxy library to control an interface between said virtual machine and said plurality of core native libraries, a first sub-routine to load multiple instances of a subset of said plurality of core native libraries for each application co-located in a process, and a second sub-routine to forward function downcalls to a subgroup of said multiple instances; and
code to create a forwarding library for each of said multiple instances to forward appropriate operating system calls and appropriate function upcalls from said multiple instances to said virtual machine.
9. The computer-readable medium as recited in claim 8 wherein said virtual machine is a java virtual machine.
10. The computer-readable medium as recited in claim 8 wherein said second sub-routine performs downcalls based on an application identifier.
11. The computer-readable medium as recited in claim 8 wherein said process is in a Solaris Operating Environment platform.
12. The computer-readable medium as recited in claim 11 wherein said first sub-routine further includes a routine to load said multiple instances using a dlmopen( ) function.
13. The computer-readable medium as recited in claim 8 wherein said proxy library is loaded in the context of the virtual machine.
14. The computer-readable medium as recited in claim 8 wherein said code to create further includes a routine to associate with each of said multiple instances differs from the forwarding library associated with the remaining instances of said multiple instances.
15. A computer system comprising:
a processor;
a memory device storing computer readable instructions including code to generate a proxy library to control an interface between a virtual machine and a plurality of core native libraries, a first sub-routine to load multiple instances of a subset of said plurality of core native libraries for each anplication co-located in a process, and a second sub-routine to forward function downealls to a subgroup of said multiple instances; and code to create a forwarding library for each of said multiple instances to forward appropriate operating system calls and appropriate function upcalls from said multiple instances to said virtual machine.
16. The computer system as recited in claim 15 wherein said virtual machine is a java virtual machine.
17. The computer system as recited in claim 15 wherein said second sub-routine downcalls based on an application identifier.
18. The computer system as recited in claim 15 wherein said process is in a Solaris Operating Environment platform.
19. The computer system as recited in claim 18 wherein said first sub-routine further includes a routine to load said multiple instances using a dlmopen( ) function.
20. The computer system as recited in claim 15 wherein said proxy library is loaded in the context of the virtual machine.
21. The computer system as recited in claim 15 wherein said code to create further includes a routine to associate with each of said multiple instances differs from the forwarding library associated with the remaining instances of said multiple instances.