Program to time your app?

[Mongrel]

Does anyone know of a good (freeware pref.) program to find out in which functions your app spends the most time?

Edit: Forgot to mention that I need one for Win2k

[Tertiary]

Well, if you are prepared to use Dev-C++, you can use gprof which comes with it. I have never used gprof before, but seeing your post I just recompiled world.exe with Dev-C++ with profiling enabled ( -pg option to compiler and linker). Here is the sort of output it gives you:

http://www.rama.demon.co.uk/worldprof.txt

[Trumpcard]

gprof is also in gcc if you use linux, it along with kprof (a KDE visual front end) , and valgrind, kcachegrind, and leaktracer have been some of my favorite tools recently.

Under MS compilers, I really dont know much other than the commerical ones. Numega tools are AWESOME..

[Mongrel]

Finally got my app working under dev-cpp, but the profiling doesn't seem to work.

First I tried it manually by adding a -pg to the c++ compiler options like the manual says. But then the linker yelled at me that it can't find "mcount" (unresolved external). A quick search revealed that both "libgmon.a" and "libuser32.a" contain a "mcount".
libuser doesn't work though, but after linking to libgmon the game compiles fine.

Only problem is: There's no output! :(

The menu entry "profile analysis" does ... well ... something, but after running there's no .txt either.

What am I doing wrong?

[Tertiary]

You need to put -pg in the linker parameters as well, i.e. Under project/project options/parameters, specify -pg in both the C++ compiler and the linker boxes. I just tested and omitting it from the linker options does give you the unresolved references to mcount.

[Eglin]

Numega tools are AWESOME..Absolutely positively undoubtedly so. Matty P. is fully worthy of idolization.

[Mongrel]

You need to put -pg in the linker parameters as well
Ok, gonna try that tonight after work. Thanks.

Trumpcard wrote:
Numega tools are AWESOME..
Absolutely positively undoubtedly so. Matty P. is fully worthy of idolization.

I wanted to try them out, but all that blah blah with the phone calls,etc... just to get a trial was too much for me. I realize that they want to protect their work, but for me that's too much of an annoyance.
So I'll stick to gprof for now :)

[BLOOD_kane]

WinXP has a feature that shows which program you use the most...mine says:

EverQuest
Photoshop
Ad-Aware
Dreamweaver MX
Flash MX
(for some odd reason) Notepad
Microsoft Word

now are you talking about which programs you use the longest or what?

[Mongrel]

Nah, a program that tells me which parts of my own programs consume the most time.

[Trumpcard]

Its a performance profiler for code...

Have 3 functions, A , B and C.

It will tell you when the program executes it spent 5% of its time executing A, 90% B, and 5% C.

Helps you to find code bottlenecks..

[Mongrel]

Yay, it works!

Well, more or less, gprof itself says that the output is invalid, but dev-c++ has no problems with it, which is good enough for me (for now at least).

75% of the time spent in the same function ... doh!

[Tertiary]

Yay, it works!

Well, more or less, gprof itself says that the output is invalid

Not sure what your problem might be. What command are you typing and what exact error are you getting ?

When I tested it, I CDed to the directory where my exe and gmon.out where, and then did c:\dev-cpp\bin\gprof <myprog>.exe
and it worked fine.

[Mongrel]

hmmmm, you have to run gprof on the .exe? Never tried that.

"gprof gmon.out" gives me the "not in a.out format" message. Will try it again tonight with the exe.

[Trumpcard]

gprof will automaticlly grab the gmon file, you have to specify the binary.. I made the same mistake initially, I assumed it just needed to read the output file...