i have been working on multithreaded console applications , wondering how this. use code control amount of threads created application:
foreach(string s in file.readalllines("file.txt")){ while (threads >= maxthreads) ; thread t = new thread(() => { threads++; //thread code - make network request using 's' console.writeline("test"); threads--; thread.currentthread.abort(); }); t.start(); } however, due while loop, console.writeline method in created blocked , not show until next free thread available.
is there way can prevent while loop blocking console.writeline call?
edit - reversed condition in while loop.
update
based on comments...
the line
while (threads >= maxthreads) ; is not way await change in thread state, because cause cpu spin in while statement. instead, use 1 of mechanisms intended thread synchronization, such semaphore.
here's an example of semaphoreslim used similar situation.
class theclub // no door lists! { static semaphoreslim _sem = new semaphoreslim (3); // capacity of 3 static void main() { (int = 1; <= 5; i++) new thread (enter).start (i); } static void enter (object id) { console.writeline (id + " wants enter"); _sem.wait(); console.writeline (id + " in!"); // 3 threads thread.sleep (1000 * (int) id); // can here @ console.writeline (id + " leaving"); // time. _sem.release(); } } 