# US 8,752,052 B2 · Sub-dispatching application server > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,752,052 B2 - Document ID: US8752052B2 - Status: Granted - Kind: B2 - Application number: 13/566,683 - Filed: 2012-08-03 - Published: 2012-11-22 - Granted: 2014-06-10 - Earliest claimed: 2008-10-02 - Assignees: International Business Machines Corporation - Applicants: Ian J. Mitchell - Inventors: Ian J. Mitchell - Web page: https://patentgrep.com/patent/US8752052B2 ## CPC - G06F 9/5027: {the resource being a machine, e.g. CPUs, Servers, Terminals} - G06F 9/485: {Task life-cycle, e.g. stopping, restarting, resuming execution (G06F9/4881 takes precedence)} - G06F 2209/5018: Thread allocation - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract Multiple sub-dispatched application server threads are provided in a single local process, where the multiple sub-dispatched application server threads carry out their own task dispatching. The multiple sub-dispatched application server threads are linked in the single local process using a distributed programming model. ## Claims ### Claim 1 A method for operating a transaction server with sub-dispatched application server threads comprising: providing multiple sub-dispatched application server threads in a single local process address space, where the multiple sub-dispatched application server threads carry out their own task dispatching; and linking the multiple sub-dispatched application server threads in the single local process address space using a distributed programming model and a scoped shared state memory. ### Claim 2 (depends on 1) The method of claim 1, where the distributed programming model comprises a distributed program link (DPL) component and further comprising, passing, via the DPL component, an application request to a remote sub-dispatched application server thread for execution comprising passing input parameters and receiving output parameters on return, where the parameters passed are self-contained. ### Claim 3 (depends on 1) The method of claim 1, further comprising, via the multiple sub-dispatched application server threads, preventing a single task assignment characteristic and preventing execution of arbitrary code that might suspend. ### Claim 4 (depends on 1) The method of claim 1, where the multiple sub-dispatched application server threads execute code obeying requirements of quasi-reentrant threads, comprising preventing a thread from waiting to use operation system services that would deny other tasks on the thread an opportunity to execute. ### Claim 5 (depends on 1) The method of claim 1, further comprising, via the multiple sub-dispatched application server threads, managing distinct sets of resources and sharing other resources. ### Claim 6 (depends on 1) The method of claim 1, further comprising: determining that a shared memory request is from a local sub-dispatched application server thread; and allocating global memory to the local sub-dispatched application server thread, where scope-aware access by the multiple sub-dispatched application server threads is managed. ### Claim 7 (depends on 1) The method of claim 1, further comprising: determining that a link program request is not locally defined; determining that a local sub-dispatched application server thread is available; and invoking the link program request on the local sub-dispatched application server thread. ### Claim 8 A system, comprising: a scoped shared state memory; and at least one processor programmed to: provide multiple sub-dispatched application server threads in a single local process address space, where each sub-dispatched application server thread is managed by a sub-dispatching component; and link the multiple sub-dispatched application server threads in the single local process address space using a distributed programming model and the scoped shared state memory. ### Claim 9 (depends on 8) The system of claim 8, where the distributed programming model comprises a distributed program link (DPL) component configured to pass an application request to a remote sub-dispatched application server thread for execution comprising passing input parameters and receiving output parameters on return, where the parameters passed are self-contained. ### Claim 10 (depends on 8) The system of claim 8, where the processor is further programmed to, via the multiple sub-dispatched application server threads, prevent a single task assignment characteristic and prevent execution of arbitrary code that might suspend. ### Claim 11 (depends on 8) The system of claim 8, where the multiple sub-dispatched application server threads execute code obeying requirements of quasi-reentrant threads to prevent a thread from waiting to use operation system services that would deny other tasks on the thread an opportunity to execute. ### Claim 12 (depends on 8) The system of claim 8, where the processor is further programmed to, via the multiple sub-dispatched application server threads, manage distinct sets of resources and share other resources. ### Claim 13 (depends on 8) The system of claim 8, where the processor is further programmed to: determine that a shared memory request is from a local sub-dispatched application server thread; and allocate global memory to the local sub-dispatched application server thread, where scope-aware access by the multiple sub-dispatched application server threads is managed. ### Claim 14 (depends on 8) The system of claim 8, where the processor is further programmed to: determine that a link program request is not locally defined; determine that a local sub-dispatched application server thread is available; and invoke the link program request on the local sub-dispatched application server thread. ### Claim 15 A computer program product stored on a computer readable storage device for operating a transaction server with sub-dispatched application server threads, comprising computer readable program code configured to: provide multiple sub-dispatched application server threads in a single local process address space, where the multiple sub-dispatched application server threads carry out their own task dispatching; and link the multiple sub-dispatched application servers threads in the single local process address space using a distributed programming model and a scoped shared state memory. ### Claim 16 (depends on 15) The computer program product of claim 15, where the distributed programming model comprises a distributed program link (DPL) component and further comprising computer readable program code configured to pass, via the DPL component, an application request to a remote sub-dispatched application server thread for execution comprising passing input parameters and receiving output parameters on return, where the parameters passed are self-contained. ### Claim 17 (depends on 15) The computer program product of claim 15, where the computer readable program code configured to provide the multiple sub-dispatched application server threads further comprises computer readable program code configured to provide multiple sub-dispatched program server threads that prevent a single task assignment characteristic and prevent execution of arbitrary code that might suspend. ### Claim 18 (depends on 15) The computer program product of claim 15, where the computer readable program code configured to provide the multiple sub-dispatched application server threads comprises computer readable program code configured to provide multiple sub-dispatched program server threads that execute code obeying requirements of quasi-reentrant threads to prevent a thread from waiting to use operation system services that would deny other tasks on the thread an opportunity to execute. ### Claim 19 (depends on 15) The computer program product of claim 15, where the computer readable program code configured to provide the multiple sub-dispatched application server threads comprises computer readable program code configured to provide multiple sub-dispatched program server threads that manage distinct sets of resources and share other resources. ### Claim 20 (depends on 15) The computer program product of claim 15, further comprising computer readable program code configured to: determine that a shared memory request is from a local sub-dispatched application server thread; and allocate global memory to the local sub-dispatched application server thread, where scope-aware access by the multiple sub-dispatched application server threads is managed. ### Claim 21 (depends on 15) The computer program product of claim 15, further comprising computer readable program code configured to: determine that a link program request is not locally defined; determine that a local sub-dispatched application server thread is available; and invoke the link program request on the local sub-dispatched application server thread.