System and method for using execution contexts in block diagram modeling

In a time-based block diagram environment, a method, comprising the steps of:

• creating an execution context, said execution context being a data structure associated with a subsystem of a time-based block diagram, said data structure controlling execution of said subsystem based on the satisfaction of a pre-condition;
• identifying at least one element capable of inheriting said execution context in said time-based block diagram;
• propagating programmatically said execution context to said at least one element capable of inheriting said execution context;
• and
• executing said subsystem after the fulfillment of the pre-condition indicated by said execution context.

In a time-based block diagram environment, a method, comprising the steps of:

• creating an execution context, said execution context being a data structure associated with a conditional output port of a block in a time-based block diagram, said data structure controlling generation of signal values on said conditional output port based on the satisfaction of a pre-condition;
• identifying at least one element capable of inheriting said execution context in said time-based block diagram;
• propagating programmatically said execution context to said at least one element capable of inheriting said execution context;
• and
• executing said at least one element of said time-based diagram after the fulfillment of said execution context pre-condition.

In a time-based block diagram environment, a method, comprising the steps of:

• creating an execution context, said execution context being a data structure associated with a conditional input port of a block in a time-based block diagram, said conditional input port connected to at least one element external to said block and reading signal values only upon the satisfaction of a specified pre-condition;
• identifying at least one element capable of inheriting said execution context in said time-based block diagram;
• propagating programmatically said execution context to said at least one element capable of inheriting said execution context;
• and
• executing said at least one element of said time-based diagram after the fulfillment of said execution context pre-condition.

In a block diagram environment, a method, comprising the steps of:

• creating an execution context, said execution context being a data structure associated with at least one element of a block diagram, said data structure controlling the conditional execution of said at least one element of said block diagram;
• determining the occurrence of a pre-condition specified by said execution context during the execution of said block diagram;
• and
• executing said at least one element of a block diagram based on the fulfillment of said execution context pre-condition.

In a block diagram environment, a medium holding computer-executable steps for a method, said method comprising the steps of:

• creating an execution context, said execution context being a data structure associated with at least one element of a time-based block diagram, said data structure controlling execution of said at least one element of said time-based block diagram based on the satisfaction of a pre-condition;
• identifying at least one element capable of inheriting said execution context in said time-based block diagram;
• propagating programmatically said execution context to said at least one element capable of inheriting said execution context;
• and
• executing said at least one element of said time-based diagram after the fulfillment of said execution context pre-condition.