• Table of contents
• PMH
• Directories description
  • Directories organization
  • Files organization of ddp/pmh
• Use case for external (or not) application
  • Case 1 : I provide data to DCOD infrastructure
  • Case 2 : I access to data from DCOD infrastructure

PMH¶

PMH Stands for Posix Memory Handler. This package should be used to interconnect on the host level all the processes which are needing to put memory in common.

Directories description¶

PMH files can be found in a DCOD workspace under directory ddp/pmh

Directories organization¶

• Some generated directories
  • bin
  • lib
  • obj_*
• src
  • lib
    • used for libbuffers.so
  • main
    • used for the PMH stand alone code
  • soap_server
    • codes used for the PMH stand alone code, generated by :
      • wsdl2aws -f -nostub wsdl/dcod_pmh.wsdl
  • tests
    • contains the tests code for the libbuffers, mailboxes, shared buffers
• wsdl
  • Contains the pmh wsdl contract

Files organization of ddp/pmh¶

• dcod_pmh.css
  • css used by the pmh AWS web server
  • should be moved in an http related directory
• GNUmakefile
  • available build targets :
    • build_tests
    • bin/posix_memory_handler_stand_alone
• GNUmakefile.buffers.mk
  • used to build libbuffers.so
  • provides buffers API
• Project files
  • pmh_standalone.gpr
    • needed to build pmh server
  • tests.gpr
    • needed to build near all tests
  • tests_soap.gpr
    • needed to build pmh_soap_shell

Use case for external (or not) application¶

Case 1 : I provide data to DCOD infrastructure¶

Step 1 : Looking for PMH access
Error : PMH not available

Step 2 : Subscribing as a provider for buffer named NAME
Error : Buffer named NAME already exists in the global system

Step 3 : Providing specific information (buffer size, management politic, ...)

Case 2 : I access to data from DCOD infrastructure¶

Step 1 : Looking for PMH access
Error : PMH not available

Step 2 : Subscribing as a client for buffer named NAME
Error : Buffer named NAME doesn't exists in the global system