A few details about next Core Temp release

Post by **The Coolest** » Wed Apr 30, 2008 11:52 pm

Core Temp will finally implement Shared memory.
I'm going to release source code showing how to read the data using C++.

This brings me to the next item.
I started working on a Vista Gadget, at the time of posting it will only work on Vista 32bit due to some software limitations.
I wanted to make the gadget in .Net for simplicity reasons and this required some engineering to get working as .Net doesn't have native support for shared memory access.
If anyone has expirience with gadgets and wants to help me with the visual design part (.Net user control) feel free to contact me.

I also intend to release the .Net and C++ Dlls which will give the end user a nice little wrapper to access the shared memory and so users will be able to create their own projects even in .Net very easily.

graysky · Post by **graysky** » Thu May 01, 2008 12:30 am

The Coolest wrote:Core Temp will finally implement Shared memory.

What does this mean in layman's terms?

Post by **The Coolest** » Thu May 01, 2008 12:47 am

Shared memory means that external processes (other running programs) can access a part of memory of the sharing process, this is usually impossible as each process's memory is protected and can't be accessed externally.
This means that anyone who wants to access the shared data can do so programmatically without any need of intermediate medium like saving the information to a file.

Orbmu2k · Post by **Orbmu2k** » Fri May 02, 2008 6:43 pm

Ive already done it for Speedfan and it is used by my own gadgets and SFKilla use my lib too.

I just need to have your SharedMemory Structure and the VirtualFilename (for OpenFileMapping()).

Is there any documentation yet for your SharedMemory?

I would like to see it in my Quadcore gadget soon

http://download.orbmu2k.de/download.php?id=32

BTW: For Vista Sidebar gadgets its recommed that your app does not need admin permissions to run, because of UAC. Speedfan f.e. does not need it for the core temp readings, maybe you can handle it too. I think its the dynamic driver installing/loading part wich needs this permissions.
So how about make an installable version of coretemp wich installs the driver by setup and let the driver startup with windows.

Post by **The Coolest** » Fri May 02, 2008 7:41 pm

As this is all still rather new I'm preparing the information in a more orderly fassion.
But here's a quick post of my H file:

Code: Select all

#define CORE_TEMP_MAPPING_OBJECT _T("CoreTempMappingObject")
#define CORE_TEMP_MUTEX_OBJECT _T("CoreTempMutexObject")
typedef struct core_temp_shared_data
{
	unsigned long	ulLoad[256];
	unsigned long	ulTjMax[128];
	unsigned long	ulCoreCnt;
	unsigned long	ulCPUCnt;
	float			fTemp[256];
	float			fVID;
	float			fCPUSpeed;
	float			fFSBSpeed;
	float			flMultipier;	
	char			sCPUName[100];
}CORE_TEMP_SHARED_DATA,*PCORE_TEMP_SHARED_DATA,**PPCORE_TEMP_SHARED_DATA;

Say, is there a way to load a C++ DLL in a gadget without all the multiple registry entries?

Orbmu2k · Post by **Orbmu2k** » Fri May 02, 2008 7:52 pm

Great ... thanks

The Coolest wrote: Say, is there a way to load a C++ DLL in a gadget without all the multiple registry entries?

Not that i know ... but this also applies to .NET libs, you have to register it as ActiveX (COM) Control to make it accessible for the javascript.
But this is no big deal. The advantage of using a .NET lib is you are platform independent, only one lib for x64 and x86.

PS: I already get it running fine. Would you like to have a Sample CoreTemp Gadget?

Post by **The Coolest** » Fri May 02, 2008 8:13 pm

That would be great

I'm not much of a GUI guy, last time I worked with forms was on VB6....
I see that you're using a .Net DLL, is it also the GUI or is that java script?
A pretty sweet tool you should check out is .NET Sidebar Gadget Creator

Orbmu2k · Post by **Orbmu2k** » Fri May 02, 2008 8:17 pm

The GUI is completly HTML and Javascript ... its just obfuscated because of code thiefs wich labeled 99% of my code with its own credits

The .NET Lib will only be loaded by javascript for accessing the data.

Post by **The Coolest** » Fri May 02, 2008 8:26 pm

I see, so how's about that Sample gadget. it'd be great
You should also check out .NET Sidebar Gadget Creator

Orbmu2k · Post by **Orbmu2k** » Fri May 02, 2008 9:22 pm

The Coolest wrote:I see, so how's about that Sample gadget. it'd be great
You should also check out .NET Sidebar Gadget Creator

SampleGadget done ...

http://download.orbmu2k.de/files/CoreTemp.zip

Iam no friend of creating gadgets by wizard

//Edit:

Did you live update the clock speed? This would be a killer feature for gadgets to show the speedstepping correctly like CPU-Z

Post by **The Coolest** » Fri May 02, 2008 10:09 pm

Nice looking gadget, thanks

The good think about that creator is the fact it lets you dynamically load .Net DLLs and you don't have to register them. This also makes it possible to easily uninstall the gadget without any mess or resedue.

Currently I can't really make the clock thing happen as that will require me to recode parts of my driver, which is a bit of an issue as the drivers were signed by a 3rd party.
But I will work something out sooner or later.

Orbmu2k · Post by **Orbmu2k** » Fri May 02, 2008 10:37 pm

The Coolest wrote: Nice looking gadget, thanks

Not that beauty, but it shows you how to access the most content of your shared memory, just a sample gadget.

Iam looking forward to support CoreTemp in my QuadCore Gadget soon

The Coolest wrote: The good think about that creator is the fact it lets you dynamically load .Net DLLs and you don't have to register them. This also makes it possible to easily uninstall the gadget without any mess or resedue.

Ive took a look on it, its more cheated than real solution.
He made a Boxing-Lib wich boxes the given .NET Libs, he also registers its Boxing.Lib withe javascript, but he places it on an other location than the gadget ... so the gadget folder stays deleteable.

The Coolest wrote: Currently I can't really make the clock thing happen as that will require me to recode parts of my driver, which is a bit of an issue as the drivers were signed by a 3rd party.
But I will work something out sooner or later.

Ok no problem, i know how expensive these verisign certificates are.
But keep an eye on it

cs86661 · Post by **cs86661** » Mon May 05, 2008 10:48 am

I try to read from share memory, and I got the first CPU Temp (fTemp[0]).

But I read second CPU Temp is 0.00 (fTemp[1]) ?

Other values that I read are all correct.

ex. 2 CPU ( 1 CORE)
GUI show these two CPU's Temp: 51C, 44C

share memory's fTemp value is ...
for(int i = 0; i less than 256; ++i)
printf("[%d] %f\n", i, fTemp);

result:
[0] 51.00
[1] 0.00 ----- I think it should be 44.00, but it always be 0.00 ?!
[2] 0.00
[3] 0.00
...
[254] 0.00
[255] 0.00

Do I miss something else ? let me know, please ...

PS. sorry, my poor english ... >_<

thank you.

Post by **The Coolest** » Mon May 05, 2008 10:57 am

Hi and welcome to the forum.
I just posted official information about the shared memory, you can look at it here:
http://www.alcpu.com/CoreTemp/developers.html
Make sure everything is per specifications.

I suggest you try out my DLL and see if it manages to read everything correctly, if it does then you're not doing something right.

cs86661 · Post by **cs86661** » Mon May 05, 2008 11:30 am

The Coolest wrote:Hi and welcome to the forum.
I just posted official information about the shared memory, you can look at it here:
http://www.alcpu.com/CoreTemp/developers.html
Make sure everything is per specifications.

I suggest you try out my DLL and see if it manages to read everything correctly, if it does then you're not doing something right.

I will try it tomorrow, thanks for your quick response.

Post by **The Coolest** » Tue May 06, 2008 12:23 am

Have you had any luck?

cs86661 · Post by **cs86661** » Tue May 06, 2008 3:36 am

The Coolest wrote:Have you had any luck?

I have tested SMCoreTempCPPReader on x64 machine (AMD Opteron 254(Troy) 2 CPU 1 CORE), I compiled it to win32 mode, and the result is just one cpu temp, others are all zero, and then I compiled it to win64 mode and run it again, but this time it print out - Error: "GetCoreTempInfo.dll" could not be loaded.

note: I use x86-OS in my home last night, and run my test program again, the result is OK, so I think there is a bug in x64-OS.

Orbmu2k · Post by **Orbmu2k** » Tue May 06, 2008 5:32 am

I did not have any problems reading coretemp shared memory with Vista x64, using my .net wrapper. So the problem might be on your part not at coretemp side.

Post by **The Coolest** » Tue May 06, 2008 9:45 am

There was a bug in Core Temp. It didn't fill the structure properly.
I've uploaded the fixed version.
You can get it at the same URL.

Regarding the DLL, I'll try to compile an x64 version and keep you updated on whether it works or not.

Post by **The Coolest** » Tue May 06, 2008 11:35 am

x64 version of the DLL is up. (same URL)

*Edit:*
.NET DLL is now based on .NET Framework 2.0 for better compatibility with older .NET implementations.

Post by **The Coolest** » Thu May 08, 2008 2:45 am

There's an updated version of Core Temp.
It brings an update to the shared memory structure.
http://www.alcpu.com/CoreTemp/developers.html

Please update your programs to fit the new additions. Of course the C++ and .NET DLLs have been updated, as well as the Demo apps.

cs86661 · Post by **cs86661** » Thu May 08, 2008 4:02 pm

The Coolest wrote:There's an updated version of Core Temp.
It brings an update to the shared memory structure.
http://www.alcpu.com/CoreTemp/developers.html

Please update your programs to fit the new additions. Of course the C++ and .NET DLLs have been updated, as well as the Demo apps.

I have tested it today, and the result is correct.

thanks. ^^

Orbmu2k · Post by **Orbmu2k** » Thu May 08, 2008 9:27 pm

Gadget updated ... works fine

http://download.orbmu2k.de/files/CoreTemp.zip

Post by **The Coolest** » Fri May 09, 2008 3:09 am

That's very nice.
But is there a way to make it only show the correct number of cores and not all 4? When a system has a dual core or even a single core (unlikely, but still)

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A few details about next Core Temp release

A few details about next Core Temp release

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