System for inserting constructs into compiled code, defining scoping of common blocks and dynamically binding common blocks to tasks

DETAILED DESCRIPTION We claim: 1.
A computer implemented method performed within a multi-processing, multi-programming computer environment for reducing conflict among tasks concurrently accessing COMMON BLOCKs in code sequences compiled within said environment from a FORTRAN like language system, and for reducing the memory used in the storing of private copies of said COMMON BLOCKs, activations of tasks being nestable, comprising the computer implemented steps of: at compile time of: (a) inserting constructs into the compiled code sequences by a FORTRAN compiler portion of said language system defining the scoping of one or more COMMON BLOCKs among concurrent tasks of subtasks at execution time; and at the execution time of: (b) responsive to each inserted construct in the compiled code sequences by dynamically binding the COMMON BLOCKs to the tasks, and (c) scoping the binding so that it lies within a dynamic nesting of the tasks.
2.
A computer implemented method performed within a multi-processing, multi-programming computer environment for reducing conflict among tasks concurrently accessing COMMON BLOCKs in code sequences compiled within said environment from a FORTRAN like language system, and for reducing the memory used in the storing of private copies of said COMMON BLOCKs, activations of these tasks being nestable, said COMMON BLOCKs including data such as variables and arrays, tasks involved as a consequence of executing the compiled code sequences include the capability of calling other tasks or sub-tasks, comprising the computer implemented steps of: a compile time: (a) inserting constructs into the compiled code sequences by a FORTRAN compiler portion of said language system defining the scoping of one or more COMMON BLOCKs to be processed among concurrent tasks or subtasks at execution time; and at execution time: (b) responsive to each inserted construct in the compiled code sequences as invoked by dynamically binding at least one COMMON BLOCK to a sub-task at the time of initial sub-tasks invocation as specified by a superior task including recording a pointer to said COMMON BLOCK in the sub-task description; and (c) updating pointers in the sub-tasks to the location of the copy of the COMMON BLOCK known to the invoking superior task