multithreading - Thread priority in Python -


for music sampler, have 2 main threads (using threading) :

  • thread #1 reads sound files from disk, in real-time, when needed (example: when press c#3 on midi keyboard, need play c#3.wav possible!) or ram if sound has been loaded in ram,

  • thread #2 preloads files ram, 1 after another.

thread #2 should done in background, during free time, should not prevent thread #1 job quickly.

in short, thread #1 should have higher priority thread #2.

how threading or other python thread managament module? or possible pthread_setschedparam? how?

i'm not big expert i'll handle problem this:

#!/usr/bin/python2.7 # coding: utf-8  import threading, time  class foo:      def __init__(self):          self.allow_thread1=true         self.allow_thread2=true         self.important_task=false          threading.thread(target=self.thread1).start()         threading.thread(target=self.thread2).start()       def thread1(self):          loops=0         while self.allow_thread1:               in range(10):                 print ' thread1'                 time.sleep(0.5)               self.important_task=true              in range(10):                 print 'thread1 important task'                 time.sleep(0.5)              self.important_task=false               loops+=1              if loops >= 2:                 self.exit()               time.sleep(0.5)       def thread2(self):         while self.allow_thread2:             if not self.important_task:                 print ' thread2'              time.sleep(0.5)      def exit(self):         self.allow_thread2=false         self.allow_thread1=false         print 'bye bye'         exit()   if __name__ == '__main__':      foo()

in few words, i'll handle thread2 thread1. if thread1 busy, pause thread2.

note added loops kill thread in example, in real case exit function called when closing program. ( if threads running in background)


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