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ITP: Pth

Hi *,=20

As I think Pth is a great programming tool and Debian still lacks it=20
I intend to package it. This is the description:

  Pth is a very portable POSIX/ANSI-C based library for Unix platforms
  which provides non-preemptive priority-based scheduling for multiple
  threads of execution ("multithreading") inside server applications.
  All threads run in the same address space of the server application,
  but each thread has it's own individual program-counter, run-time
  stack, signal mask and errno variable.

  The thread scheduling itself is done in a cooperative way, i.e. the
  threads are managed by a priority- and event-based non-preemptive
  scheduler. The intention is that this way one can achieve better
  portability and run-time performance than with preemptive scheduling.
  The event facility allows threads to wait until various types of
  events occur, including pending I/O on filedescriptors, asynchronous
  signals, elapsed timers, pending I/O on message ports, thread and
  process termination, and even customized callback functions.


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