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Is Android an RTOS?
- Thread starter Lvenok
- Start date
Ed Zachary
Newbie
It would appear that the answer to your question is "No, Android is not an RTOS."
Android and RTOS together: The dynamic duo for today’s medical devices – Embedded Computing Design
However, there are a lot of people looking at getting Android and RTOS to work together.
Google RTOS Android. You will get a lot of informative links.
Android and RTOS together: The dynamic duo for today’s medical devices – Embedded Computing Design
However, there are a lot of people looking at getting Android and RTOS to work together.
Google RTOS Android. You will get a lot of informative links.
A.Nonymous
Extreme Android User
WTF is RTOS? I hate acronyms.
After "Googling" RTOS Android I got a lot of links, but they don't give precise answer.
Only Android and RTOS together: The dynamic duo for today’s medical devices – Embedded Computing Design give something like answer "No" to my question.
I doubt, but I have reasons to suppose that you're right.
Is my text style very horrible?
Please, tell me about my mistakes.
Only Android and RTOS together: The dynamic duo for today’s medical devices – Embedded Computing Design give something like answer "No" to my question.
I doubt, but I have reasons to suppose that you're right.
Is my text style very horrible?
Please, tell me about my mistakes. No, Android is not a RTOS, because Android isn't deterministic. It doesn't try to be. Running apps have no guarantees about anything. If you need a true RTOS, Android is NOT the right OS to use.
Note that "Realtime" does NOT mean "responsive", as in, "The phone had a fluid and responsive UI". "Realtime" simply means that you, the programmer, can know in advance *exactly* how often your code will run, how long it will take to run, and the conditions under which it will run. You might have to go out of your way to guarantee those specific conditions, but you CAN if you MUST. Under Android, there are NO guarantees, except that nothing is guaranteed.
I cringe whenever I see something like "Realtime Linux" in print, because getting anything that resembles Linux to be truly "realtime" requires replacing so much of the kernel, by the time you're done you're left with little more than "GPL'ed open-source unix-like realtime operating system loosely inspired by the work of Linus Torvalds", in much the same way that Microsoft has realtime variants of Windows CE that share the first 7 letters of their name with a popular desktop operating system published by the same company.
Note that "Realtime" does NOT mean "responsive", as in, "The phone had a fluid and responsive UI". "Realtime" simply means that you, the programmer, can know in advance *exactly* how often your code will run, how long it will take to run, and the conditions under which it will run. You might have to go out of your way to guarantee those specific conditions, but you CAN if you MUST. Under Android, there are NO guarantees, except that nothing is guaranteed.
I cringe whenever I see something like "Realtime Linux" in print, because getting anything that resembles Linux to be truly "realtime" requires replacing so much of the kernel, by the time you're done you're left with little more than "GPL'ed open-source unix-like realtime operating system loosely inspired by the work of Linus Torvalds", in much the same way that Microsoft has realtime variants of Windows CE that share the first 7 letters of their name with a popular desktop operating system published by the same company.
ORLY?
A.Nonymous
Extreme Android User
Five posts and I still don't know what RTOS is. **Goes off to the googles...**
A popular RTOS is VxWorks. Look it up and you will find its RTOS features that a 'normal' OS such as Linux kernel does not have.
Key feature of an RTOS is that an application's interrupt priority can be as high as any of the kernel processes, thus guarantees that the application's request can be processed in an 'immediate' fashion, thus the 'real time', i.e. minimal latency.
This is all good right? Sure but it also makes for hellish debugging of many application processes over-stepping one another's memory allocations, leading to harder to debug intermittent crashes of an application.
Key feature of an RTOS is that an application's interrupt priority can be as high as any of the kernel processes, thus guarantees that the application's request can be processed in an 'immediate' fashion, thus the 'real time', i.e. minimal latency.
This is all good right? Sure but it also makes for hellish debugging of many application processes over-stepping one another's memory allocations, leading to harder to debug intermittent crashes of an application.
Old Member
Android Expert
RTOS=Real Time Operating System