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From "nadir amra (JIRA)" <>
Subject [jira] Assigned: (AXISCPP-856) Add Platform Services Abstraction Layer
Date Sun, 23 Oct 2005 19:58:11 GMT
     [ ]

nadir amra reassigned AXISCPP-856:

    Assign To: nadir amra  (was: Nadir Amra)

> Add Platform Services Abstraction Layer
> ---------------------------------------
>          Key: AXISCPP-856
>          URL:
>      Project: Axis-C++
>         Type: Improvement
>   Components: Basic Architecture
>  Environment: N/A
>     Reporter: nadir amra
>     Assignee: nadir amra

> I am creating this issue relating to something we talked about months ago in the mailing
list - you can search on "Platform abstraction layer  thoughts" in the axis-c-dev mailing
list.  To summarize and refine the discussion, the goal is to attempt to concentrate as much
as  possible any platform differences in one area - code will be located in the platforms/
directory.  There occasionally will be times when this cannot be done, but hopefully those
occasions will be few and any platform-specific code changes required outside of platforms/
directory will be minimal. 
> I have initially identified several areas that need to be abstracted:  DLL loading, mutex,
socket, and obtaining OS errors.  There may be more (such as event log for FFDC kinds of stuff
- on Unix maybe syslog() will be used, on windows to the event log), but that will be identified
and done 
> later.
> The idea (still to be hashed out) is to have classes for the various platform-specific
stuff.  The header files and default implementation would be in platforms/ directory as follows:
> platforms/AxisPsLibraryLoader.hpp 
> platforms/AxisPsLibraryLoader.cpp
> platforms/AxisPsMutex.hpp
> platforms/AxisPsMutex.cpp
> platforms/AxisPsSocket.hpp
> platforms/AxisPsSocket.cpp
> platforms/AxisPsOSError.hpp
> platforms/AxisPsOSError.cpp
> The default implementation of these classes will be patterned after Unix and packaged
in a DLL/library called, for lack of a better name, axis_platformservices.   The AXIS engine
will need to link to this DLL/library and thus it will need to be created first prior to creating
any other DLLs/libraries.
> The implementation code for other platforms will be in each platform directory.  For
example, OS/400 will need to have its own AxisPsLibraryLoader.cpp file so one will be located
as follows:
> platforms/os400/AxisPsLibraryLoader.cpp
> When building the  axis_platformservices DLL/shared library, which files are build is
dependent on the platform.  For example, OS/400 would build everything in platforms/os400/
and would also build 
> platforms/AxisPsMutex.cpp, platforms/AxisPsSocket.cpp and platforms/AxisPsOSError.cpp.

> The platform abstraction layer a separate library that will be statically linked to other
service programs.
> The abstraction layer can also be used for to possibly simplify tracing support.
> More details later.

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