OS Abstractor

Section description:

What is OS Abstractor and Cross OS Development Platform
Can I start developing my application with the OS Abstractor APIs without a RTOS?
Why not use an in-house abstraction?
Why develop portable code?
Why use a standardized OS interface?
Why support multiple operating systems?
Why should I use OS Abstractor with my proprietary OS?
How do you support Process Model?
Could you give one example of target OS which gives hardware protection & true process and which does not provide?
Could you give any key difference between software process model and hardware assisted model as supported by OS abstraction layer? Please also give details of any key difference vs Linux process model
How do you support Memory Management - VM, Shared Library, demand paging etc? If yes, is it "arm-linux-eabi" complaint?
Could you give more details of support levels for "Shared Library" & "demand paging" in the OS Abstraction layer?
How do you support Linux Extensions like - SysV IPC/cgroups/inotiy/futext/readahead/udev etc?
Is it possible for Mapusoft to check feasibility to implement these features at the OS Abstraction layer?
Do you support extensions to include TCP/IP stack which may not be provided as part of underlying RTOS?
Do you support necessary WiFI, BT kernel Interfaces, so that native OS Connectivity frameworks can be reused? Ex: BlueZ, Connman etc.
How do you schedule process in multi-process application? Does this depend on target OS?
Are there possible software modes where function or performance would be anomalous? If so, how does the software enter such modes?
How would you classify the OS Abstractor version of Linux? For example, do these versions have significant code reuse when compared to previous versions? Or, can they be considered child or rehosted versions of a mature product?
Do you have safety data that you can provide us with? Examples include but are not limited to: Traceability matrix, Code review records, Functional Testing Results, Stress Testing Results, Stability Testing Results, Condition/Decision Coverage
I generated source code for Windows XP as the target in AppCOE, compiled, and executed the program in VC++. Are the resultant tasks scheduled by the Windows scheduler?
If I select µITRON as a target OS, who schedules the task? Do the AppCOE libraries call µITRON dispatcher?
What is the default maximum stack size for QNX in the main thread?
If three same priority processes, A, B and C are created, which process starts execution first? When will it switch to another process?
If a task is created with priority 100, and it is changed to priority 50, then will the created task start executing? Is it not possible to set higher priority than the parent process?
There are three processes, A, B and C, created of the same priority and are in ready state. If process A create new task D, with a priority higher than other three processes, then will Process D start first? If priority D is lower, then will process A keep executing? If priority D is equal to other processes, will the application execution be in this series: A -> B -> C -> D -> A,,,, ?
OS Abstractor document says that we can use target OS native IO functions if I set MAP_OS_ANSI_IO to OS_FALSE. Does this mean that I can also call other target OS APIs from application program?
If target OS is uITRON, can I call set_tim (set system time API)?
How about sig_sem (signal semaphore)?
If target OS is uITRON and it has Windows compatible file system and TCP/IP which support BSD Socket, then can the developer use open, close, read, write functions for file related operation?
If target OS is uITRON and it has Windows compatible file system and TCP/IP which support BSD Socket, can the developer use socket functions such as socket, accept, listen., etc by calling native OS system call?
What do I do if I get OS_ERR_RESOURCE error code when creating the OS Abstractor resources?
What do I do if I get OS_ERR_NOT_OWNER error code when using any OS Abstractor resources?
I see some functions inside the OS Abstractor library that starts with “INT_”. Can we also use these functions in our applications?
Is all access to a memory pool serialized among all threads (tasks)? Does each thread lock the memory pool when allocating or deallocating from that memory pool?
What happens if a memory pool is deleted while there are still open handles to that memory pool? Or what happens to the memory behind the pointers that are still held?
Does the application have direct access to OS Abstractor control blocks?
Does OS Abstractor dynamically allocate memory at run-time?
Can I set up a memory pool at a specific physical address and share it across multiple process and processors?
What are the important design goals of OS Abstractor?
Does OS Abstractor support DLL calls?
How can I use the process feature within a single or multiple executable images?
How can I pass parameters (such as void *, Char *, etc.) to task functions?
How is memory defragmentation handled in the OS Abstractor product on Linux and VxWorks?
Since I do not have a source code for OS Abstractor, it is difficult to understand your products. Is it possible to send me the full source code?
Which latest Linux kernel version do you support?
Do you provide any NAND flash based file systems?
What kind of security abstraction features are supported in the OS Abstraction layer ? Ex: SMACK, SELinux, DAC etc

Find quick answers to your questions about OS Abstractor product

Does OS Abstractor support DLL calls?

Yes, under certain target OS that normally does not provide DLL support. DLL support is not packaged with the OS Abstractor release. If you need specific DLL support for your target environment, pleas...
How can I use the process feature within a single or multiple executable images?

If it is a single image, then you can use OS_Create_Process() function to create new processes and this way you can break down your single application to run as many individual processes. In case of m...
How can I pass parameters (such as void *, Char *, etc.) to task functions?

OS Abstractor task accepts a parameter type UNSIGNED. If you need to pass any pointer, you can assign the pointer value to a variable of type UNSIGNED and pass that to the task routine. You will then ...
How is memory defragmentation handled in the OS Abstractor product on Linux and VxWorks?

OS Abstractor always prefers to use the OS defrag methods for pools created using OS_Create_Memory_Pool API. Under VxWorks, the pool management and defrag is handled by the OS itself. Under Linux, we ...
Since I do not have a source code for OS Abstractor, it is difficult to understand your products. Is it possible to send me the full source code?

Yes, you can generate source code for all the Mapusoft products if you have the required License. For more information on our OS Abstractor manual and/or for an overview of our licensing please contac...
Which latest Linux kernel version do you support?

We basically support every version and distribution out there for Linux...
Do you provide any NAND flash based file systems?

We provide ANSI interface to various file systems offered by the RTOS vendors...
What kind of security abstraction features are supported in the OS Abstraction layer ? Ex: SMACK, SELinux, DAC etc

We do not have any encryption support. Access to objects contained in shared memory are restricted only when they are accessed using our APIs....