Anil A Gupta

US Patent:

58389776, Nov 17, 1998

Filed:

Jun 7, 1995

Appl. No.:

8/473610

Inventors:

Anil Gupta - Dallas TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G06F 945

US Classification:

395705

Abstract:

The dbX persistent programming language model solves the problem of seamlessly providing an unfragmented, persistible, complex object heap space that extends beyond virtual memory to a program in a host programming language X. It does so without rewriting a compiler for X and without operating system or hardware dependencies. It uses a memory pointer as a pointer to a persistible object, with the lvalue of the pointer providing a hook to the OID of the object. The lvalues of pointers to persistible objects, their associated OIDs and other information about persistible objects are maintained in a global data structure. Unresolved pointers to persistible objects point to an unusable area of memory, and dereferencing them triggers object faulting. A keyword and an overloaded allocation operator are used to identify statically and dynamically allocated pieces of memory respectively as persistible. A preprocessor processes occurrences of the keyword and operator, and some operations on pointers to persistible objects in a dbX program and generates X code.

US Patent:

58225900, Oct 13, 1998

Filed:

Oct 31, 1991

Appl. No.:

7/785961

Inventors:

Anil Gupta - Dallas TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G06F 944

US Classification:

395705

Abstract:

The dbX persistent programming language model solves the problem of seamlessly providing an unfragmented, persistible, complex object heap space that extends beyond virtual memory to a program in a host programming language X. It does so without rewriting a compiler for X and without operating system or hardware dependencies. It uses a memory pointer as a pointer to a persistible object, with the lvalue of the pointer providing a hook to the OID of the object. The lvalues of pointers to persistible objects, their associated OIDs and other information about persistible objects are maintained in a global data structure. Unresolved pointers to persistible objects point to an unusable area of memory, and dereferencing them triggers object faulting. A keyword and an overloaded allocation operator are used to identify statically and dynamically allocated pieces of memory respectively as persistible. A preprocessor processes occurrences of the keyword and operator, and some operations on pointers to persistible objects in a dbX program and generates X code.