Ad:

C Discussion Thread
Unsolved
Views: 1576

Apr 26th, 2007

Performance Issue

Expand Post »

Hi Friends,
Can any of you pls tell me (in detail) which of the following options will be faster?

Option 1:

C Syntax (Toggle Plain Text)
int fun()
{
    if( !cm_aObject )
         return -1;
    return cm_aObject->getNum();
}
int fun()
{
    if( !cm_aObject )
         return -1;
    return cm_aObject->getNum();
}

Option 2:

C Syntax (Toggle Plain Text)
int fun()
{
    try{
          return cm_aObject->getNum();
    }catch(...){
          return -1;
    }
}
int fun()
{
    try{
          return cm_aObject->getNum();
    }catch(...){
          return -1;
    }
}

Thanx,
Amit

Similar Threads

recommended reading on Novell? in Networking
urgently need help regarding performance issue of WinServer 2003 & dual core procesor in Windows NT / 2000 / XP
regarding Win Server 2003 & dual core processors performance issue in Windows NT / 2000 / XP
Performance issue encountered need another approach in Oracle

amt_muk

Reputation Points: 14

Solved Threads: 3

Light Poster

Offline

48 posts
since May 2005

Permalink

Apr 26th, 2007

Re: Performance Issue

Option 2 is slower because there is a lot more code to be executed.

Ancient Dragon

Sponsor

Team Colleague

Featured Poster

Reputation Points: 5608

Solved Threads: 2283

Retired and Enjoying Life

Offline

21,963 posts
since Aug 2005

Permalink

Apr 26th, 2007

Re: Performance Issue

That doesn't mean you should avoid exception handling; in fact the performance loss is so minimal, it's hardly worth taking that into account when trying to decide when and where to use exception handling. Option 2 is by far the most robust.

John A

Team Colleague

Reputation Points: 2240

Solved Threads: 338

Vampirical Lurker

Offline

5,055 posts
since Apr 2006

Permalink

Apr 27th, 2007

Re: Performance Issue

Thanx to both of you.

Amit

amt_muk

Reputation Points: 14

Solved Threads: 3

Light Poster

Offline

48 posts
since May 2005

Permalink

Apr 27th, 2007

Re: Performance Issue

Click to Expand / Collapse Quote originally posted by joeprogrammer ...

in fact the performance loss is so minimal, it's hardly worth taking that into account when trying to decide when and where to use exception handling.

not true. exceptions are designed with the idea that
a. you do not have to pay a high performance penalty in the event of there being no error
b. if there is an error, you are willing to spend time recovering from it.
c. exceptions, as the name suggests, are used to indicate exceptional conditions that do not occur in the normal course of events.

Ancient Dragon's statement is accurate; the easiest way to check it out is
a. generate the assembly code for both versions and have a look at it.
b. write a test driver and time the performance on your implementation.

vijayan121

Reputation Points: 1159

Solved Threads: 285

Posting Virtuoso

Offline

1,606 posts
since Dec 2006

This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.

Previous Thread in C Forum Timeline: C array I/O

Next Thread in C Forum Timeline: Np-complete array generator

DaniWeb Message

Cancel Changes

User Name
Password