Difference between revisions of "User:AlexVinS/Packages"

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==Some ideas on library [[packages]] design==
+
== Delphi style ==
* New system ''lib''.  
+
=== Platform dependent ===
** os independent, but depends on CPU. Example targets i386-lib ia640-linux
+
* [[packages|Described here]]
 +
=== Semi-crossplatform ===
 +
* New system ''crossplatform''.  
 +
** os independent, but depends on CPU. Example targets i386-crossplatform ia64-crossplatform
 
* OOP interface (ojpas interfaces based) between host executable and package RTL, extensible to communicate with concrete packages.
 
* OOP interface (ojpas interfaces based) between host executable and package RTL, extensible to communicate with concrete packages.
 
* Host executable memory manager shared with package libs.
 
* Host executable memory manager shared with package libs.
 
* Package binary file format.  
 
* Package binary file format.  
 
** Require to be fully portable (not depends of target system and cpu)
 
** Require to be fully portable (not depends of target system and cpu)
*
 
  
== Questions ==
+
==== Questions ====
 
* How exceptions objects should be transfered between executable and packages?
 
* How exceptions objects should be transfered between executable and packages?
 
* The package binary format (ELF, FatELF based?)
 
* The package binary format (ELF, FatELF based?)
* The package main source file format (lpk?)
 
 
* Can RTTI help to access objects from exe by package and vice versa? Use only interfaces or macpas external objects?
 
* Can RTTI help to access objects from exe by package and vice versa? Use only interfaces or macpas external objects?
  
== Known issues ==
+
==== Known issues ====
=== win32 ===
+
; win32  
* manually loaded binary must (of this restriction could be circumvented?) be copied to another location to mark memory executable.
+
* manually loaded binary must be copied to another location to mark memory executable. On XP SP2+ Vista SP1+ & win7 file mapping object could be created with execute permission.
 +
 
 +
==== Links ====
 +
* [http://www.mikekohn.net/file_formats/magic_elf.php Magic ELF] ELF Loader (should run on win32 too)
 +
 
 +
=== Full crossplatform ===
 +
* some kind of byte code, like Java, CLR, LLVM
 +
 
 +
== C++ style ==
 +
* Executable and its plugins shares same rtl in statically linked library (memory manager shared so classes and longstrings can be passed between modules).
 +
* Classes can be imported from dynamic library. It means that macpas extension should be enabled for "normal" classes and objects.
 +
* library should be shipped with set of include files, wich defines interface of exported symbols as .h files in c/c++ do.
 +
 
 +
[[Category:Proposals|Packages]]

Latest revision as of 20:05, 24 January 2011

Delphi style

Platform dependent

Semi-crossplatform

  • New system crossplatform.
    • os independent, but depends on CPU. Example targets i386-crossplatform ia64-crossplatform
  • OOP interface (ojpas interfaces based) between host executable and package RTL, extensible to communicate with concrete packages.
  • Host executable memory manager shared with package libs.
  • Package binary file format.
    • Require to be fully portable (not depends of target system and cpu)

Questions

  • How exceptions objects should be transfered between executable and packages?
  • The package binary format (ELF, FatELF based?)
  • Can RTTI help to access objects from exe by package and vice versa? Use only interfaces or macpas external objects?

Known issues

win32
  • manually loaded binary must be copied to another location to mark memory executable. On XP SP2+ Vista SP1+ & win7 file mapping object could be created with execute permission.

Links

  • Magic ELF ELF Loader (should run on win32 too)

Full crossplatform

  • some kind of byte code, like Java, CLR, LLVM

C++ style

  • Executable and its plugins shares same rtl in statically linked library (memory manager shared so classes and longstrings can be passed between modules).
  • Classes can be imported from dynamic library. It means that macpas extension should be enabled for "normal" classes and objects.
  • library should be shipped with set of include files, wich defines interface of exported symbols as .h files in c/c++ do.