What exactly is a critical section?
c++, critical-section
Solution
Critical section is a code chunk. If any thread entered it, no other thread can enter until it's free. If 1 and 2 are different critical sections (i.e. handled by a different semaphore), someone can enter 2 if 1 is occupied.
Problem
Just want a little clarity on the this. Imagine I use the windows api of EnterCriticalSection. I call all of them with `EnterCriticalSection(&criticalsection);` This is the thread function that is multi threaded ``` void thread (){ //enter critical section (part 1) data //leave critical section ///more data 1 //entercritical section (part 2) //more data 2 //leave critical section } ``` Once a thread enters the critical (part 1), other threads cannot enter that section regardless of whether more data 1 actually has any shared data or not right? Also during that time other threads also cannot enter part 2 of the critical section either.