Synchronization using InterlockedExchange() Windows API

#include "test.h"
#include <windows.h>


volatile long m = 0;
HANDLE *eventH;

DWORD __stdcall fun(void *p)
{
Sleep(1000);
while(InterlockedExchange(&m, 1) != 0)
{
Sleep(0);
}
cout << *(int*)p << endl;
m = 0;
SetEvent(eventH[*(int*)p]);

return 0;
}

int main()
{
const unsigned int num = 64;
DWORD threadid[num];
HANDLE h[num];
eventH = new HANDLE[num];
unsigned int buffer[num];


for (int i = 0; i < num; ++i)
{
eventH[i] = CreateEvent(NULL, false, 0, NULL);

buffer[i] = i;
h[i] = CreateThread(NULL, 0, fun, &buffer[i], 0, &threadid[i]);
}

WaitForMultipleObjects(num, eventH, true, INFINITE);
WaitForMultipleObjects(num, h, true, INFINITE);

return 0;
}

Is it better to buy or rent a house?

Personally I found this calculator very useful.
Don't forget to set the appreciation rate for house price and price rent....

Try it:
http://www.itrust.in/tools-and-calculators/Buy-vs-Rent/Calculator.jsp

Enjoy !!

Is your disk showing less space ?

If Hybernate is on in your m/c, then a hidden file will be created equal to the size of your RAM. so you will loose that much space from your avilable disk space. In case you want to increase disk size, you have to disable Hybernate.


Command:
Disable command : powercfg /hibernate off
Enable command  : powercfg /hibernate on

PS: Tested on my windows 2k8 m/c

Text to Speech online tool

http://tts.imtranslator.net/A7eU

Run command prompt from system account

Normally process run with account which is currenlty logged in and Services run in System account.

so the idea is to create a service which will launch "Command prompt". This idea is valid to launch any application in System account.

This is the command to create such a servcie: (type this on command prompt)

sc create testservice binpath= "cmd /k start" type= own type= interact

please remember that there is no space before '=' and one space after '='. I dont know why but it is required.

This command will install the service, now go to services.msc and start this new service. one error will come but still you will be able to see a cmd.exe running in system account  :)