wait()and
signal()operations in semaphores, but that is not possible in multiprocessor systems. In fact, a busy wait (or
spinlock), can be useful, especially in multiprocessor systems, when the wait is expected to be short (as with
wait()and
signal()), because no context switch is required when a process must wait on the lock.
_ A process is waiting for an event to occur and it does so by executing instructions. _ A process is waiting for an event to occur in some waiting queue (e.g., I/O, semaphore) and it does so without having the CPU assigned to it. _ Busy waiting cannot be avoided altogether.
Be more patient, could be busy.
"Busy waiting" is the act of actively waiting for some condition to change. In programming microcontrollers, one might want to wait for a pin to become high or low before continuing with the program. A "busy waiting loop" in C would look like this: ... while(PIN1 != HIGH) ; ... This essentially does nothing but check the value of "PIN1" time after time, waiting for it to become "HIGH". Now, if PIN1 were to become "HIGH", the processor "breaks out" of this busy-waiting loop and continues with the program.
while(test-and-set(1)) { //access critical section } busy waiting is constantally checking for a condition for true if it does not again and again check the condition upto condition becomes true
Busy waiting vs. Blocking Busy waiting is preferable when: Scheduling overhead is larger than expected wait time. Process resources are not needed for another tasks Schedule -based blocking is inappropriate (e.g in OS kernel)
The repeated execution of a loop of code while waiting for an event to occur is called busy-waiting. The CPU is not engaged in any real productive activity during this period, and the process does not progress toward completion.
in operating system
advantage small code ais busy waiting
Jesus is comming and we are waiting for that great day.
The Whig Party's platform completely avoided addressing the issue of slavery in the years leading up to the Civil War. They focused more on economic issues and internal improvements rather than taking a stance on the divisive issue of slavery.
She was there to help watch the kids while atticus was busy with the trial
it was to keep the soldiers busy durning the long waiting periods between flighting.