i came across this statement on the internet "java uses Preemtive scheduling?!!!" and i have NO idea what it means.
i found 2 definitions online:
A preemptive operating system allows external interrupts ( such as timers, communication devices, etc.) to cause the task that is running to be preempted by a higher priority task.
In a non-preemptive Operating system . Each task is allow to run until it is ready to give up control (cooperative), or its alotted time expires (time sliced). No preemption is possible.
i have 2 questions
first one :in the definition of non-preemptive os, doesnt alotted time means a timer interrupt ? so its not non preemptive anymore !
second question : so i "preemptive" / "non preemptive" adjective is used for scheduling ways that the OPERATING system uses.
what does it mean to say that java uses preemtive sheduling ?! java is a language , not an operating system that has processes to schedule and run !
thank you in advance for your help.