Threads v/s Connections Post: 35622

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Top Forums UNIX for Dummies Questions & Answers Threads v/s Connections Post 35622 by google on Wednesday 23rd of April 2003 08:39:56 AM

04-23-2003

Registered User

from a quick google search.....
Threads:
All programmers are familiar with writing sequential programs. You've probably written a program that displays "Hello World!" or sorts a list of names or computes a list of prime numbers. These are sequential programs. That is, each has a beginning, an execution sequence, and an end. At any given time during the runtime of the program, there is a single point of execution.
A thread is similar to the sequential programs described previously. A single thread also has a beginning, a sequence, and an end and at any given time during the runtime of the thread, there is a single point of execution. However, a thread itself is not a program; it cannot run on its own. Rather, it runs within a program. There is nothing new in the concept of a single thread. The real hoopla surrounding threads is not about a single sequential thread. Rather, it's about the use of multiple threads in a single program, running at the same time and performing different tasks.

for more tasty tidbits on threads visit --> http://java.sun.com/docs/books/tutor...efinition.html

Connection:

What do you mean when you ask about a connection? There can be many differant interpretations for example: connection to a host (IP Address + Port = Socket) or connection to a database (Oracle, MySQL, Sybase).

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LEARN ABOUT HPUX

pause

pause(2)							System Calls Manual							  pause(2)

NAME

       pause - suspend process until signal

SYNOPSIS

DESCRIPTION

       suspends  the  calling  process	until  it  receives  a	signal.  The signal must be one that is not currently set to be ignored or blocked
       (masked) by the calling process.

       If the signal causes termination of the calling process, does not return.

       If the signal is by the calling process and control is returned from the signal-catching function  (see	signal(5)),  the  calling  process
       resumes execution from the point of suspension; with a return value of -1 from and set to

APPLICATION USAGE

   Threads Considerations
       Signal dispositions (such as catch/default/ignore) are shared by all threads in the process and blocked signal masks are maintained by each
       thread.	Therefore, the signals being waited for should not be ignored by the process or blocked by the calling thread.

       will suspend only the calling thread until it receives a signal.

       If other threads in the process do not block the signal, the signal may be delivered to another thread in the process and the thread in may
       continue waiting.  For this reason, the use of is recommended instead of for multi-threaded applications.

       For more information regarding signals and threads, refer to signal(5).

SEE ALSO

       alarm(2), kill(2), sigwait(2), wait(2), signal(5).

STANDARDS CONFORMANCE

																	  pause(2)

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