sc::ThreadGrp(3)

NAME
sc::ThreadGrp - The ThreadGrp abstract class provides a means to manage separate threads of control.

SYNOPSIS

#include <thread.h>

Inherits sc::DescribedClass.

Inherited by sc::ProcThreadGrp, sc::PthreadThreadGrp, and sc::PumaThreadGrp.

  Public Member Functions
ThreadGrp (const Ref< KeyVal > &)
ThreadGrp (const ThreadGrp &, int nthread=-1)
virtual void add_thread (int threadnum, Thread *thread)
Assigns a Thread object to each thread.
virtual void add_thread (int threadnum, Thread *thread, int priority)
Like add_thread(threadnum, thread), but assign a priority that the thread is to use.
int nthread () const
The number of threads that will be run by start_thread.
void delete_threads ()
virtual int start_threads ()=0
Starts the threads running.
virtual int wait_threads ()=0
Wait for all the threads to complete.
virtual Ref< ThreadLock > new_lock ()=0
Return a local object.
virtual ThreadGrp * clone (int nthread=-1)
Create a ThreadGrp like the current one.

  Static Public Member Functions
static void set_default_threadgrp (const Ref< ThreadGrp > &)
static ThreadGrp * get_default_threadgrp ()
static ThreadGrp * initial_threadgrp (int &argc, char **argv)

  Protected Attributes
Thread ** threads_
int nthread_

Detailed Description

The ThreadGrp abstract class provides a means to manage separate threads of control.

Member Function Documentation

  virtual void sc::ThreadGrp::add_thread (int threadnum, Thread * thread) [virtual]

Assigns a Thread object to each thread.

If 0 is assigned to a thread, then that thread will be skipped.

Reimplemented in sc::PthreadThreadGrp.

  virtual void sc::ThreadGrp::add_thread (int threadnum, Thread * thread, int priority) [virtual]

Like add_thread(threadnum, thread), but assign a priority that the thread is to use.

The member is primarily for experimentation, the priority argument is currently not well defined and ignored.

Reimplemented in sc::PthreadThreadGrp.

  virtual int sc::ThreadGrp::start_threads () [pure virtual]

Starts the threads running.

Thread 0 will be run by the thread that calls start_threads.

Implemented in sc::PthreadThreadGrp, sc::PumaThreadGrp, and sc::ProcThreadGrp.

  virtual int sc::ThreadGrp::wait_threads () [pure virtual]

Wait for all the threads to complete.

This must be called before start_threads is called again or the object is destroyed.

Implemented in sc::PthreadThreadGrp, sc::PumaThreadGrp, and sc::ProcThreadGrp.

  virtual ThreadGrp* sc::ThreadGrp::clone (int nthread = -1) [virtual]

Create a ThreadGrp like the current one.

If nthread is given, the new ThreadGrp will attempt to support that number of threads, but the actual number supported may be less. If nthread is -1, the number of threads in the current group will be used.

Reimplemented in sc::PthreadThreadGrp, and sc::ProcThreadGrp.

Author

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