Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #55424

Re: Multiple scripts versus single multi-threaded script

Show all headers | View raw

On Fri, Oct 4, 2013 at 2:41 AM, Roy Smith <roy@panix.com> wrote:
> The downside to threads is that all of of this sharing makes them much
> more complicated to use properly.  You have to be aware of how all the
> threads are interacting, and mediate access to shared resources.  If you
> do that wrong, you get memory corruption, deadlocks, and all sorts of
> (extremely) difficult to debug problems.  A lot of the really hairy
> problems (i.e. things like one thread continuing to use memory which
> another thread has freed) are solved by using a high-level language like
> Python which handles all the memory allocation for you, but you can
> still get deadlocks and data corruption.

With CPython, you don't have any headaches like that; you have one
very simple protection, a Global Interpreter Lock (GIL), which
guarantees that no two threads will execute Python code
simultaneously. No corruption, no deadlocks, no hairy problems.

ChrisA

Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Multiple scripts versus single multi-threaded script JL <lightaiyee@gmail.com> - 2013-10-03 09:01 -0700
  Re: Multiple scripts versus single multi-threaded script Roy Smith <roy@panix.com> - 2013-10-03 12:41 -0400
    Re: Multiple scripts versus single multi-threaded script Chris Angelico <rosuav@gmail.com> - 2013-10-04 02:50 +1000
      Re: Multiple scripts versus single multi-threaded script Roy Smith <roy@panix.com> - 2013-10-03 14:28 -0400
        Re: Multiple scripts versus single multi-threaded script Chris Angelico <rosuav@gmail.com> - 2013-10-04 04:36 +1000
          Re: Multiple scripts versus single multi-threaded script Roy Smith <roy@panix.com> - 2013-10-03 15:53 -0400
            Re: Multiple scripts versus single multi-threaded script Chris Angelico <rosuav@gmail.com> - 2013-10-04 08:22 +1000
    Re: Multiple scripts versus single multi-threaded script Dave Angel <davea@davea.name> - 2013-10-03 18:40 +0000
    Re: Multiple scripts versus single multi-threaded script Jeremy Sanders <jeremy@jeremysanders.net> - 2013-10-04 10:02 +0200
    Re: Multiple scripts versus single multi-threaded script Grant Edwards <invalid@invalid.invalid> - 2013-10-04 16:38 +0000
  Re: Multiple scripts versus single multi-threaded script Chris Angelico <rosuav@gmail.com> - 2013-10-04 02:42 +1000

csiph-web