Global variables

[irona20]

I need a global variable, which will be used from several .exe.
My code:

Log_clnt.cpp

string text_messages [NUM_MAX_MESSAGES];

With other files, it will generated a logclnt.lib.

SVLog.cpp

#include "util/log_clnt.h"
extern string text_messages [NUM_MAX_MESSAGES];

int servMain (int argc,char *argv[]) 
{
   string value;
  for (int i=0; i < NUM_MAX_MESSAGES; i++)
  {
#ifdef WIN32
	stringstream strsStream;
#else
	strstream strsStream;
#endif
	strsStream << i;
	  if (!c.getValueForVariable (strsStream.str().c_str(), value) )
	  {
		  cerr << "Error reading messages values" << endl;
		  return 1;
	  }
	  //Metemos el valor en el array
	  text_messages [i] = value;
  }
}

I link SVLog.cpp with logclnt.lib and I generate an executable logserv.exe

But then, when I try from my logclnt.lib (in other function) to get a value from text_messages, it returns a empty string. However, text_messages is ok in my servmain function.

Any ideas?

[dimm_coder]

As I understand U want to share data between different processes?
If so, U need to use some IPC. The most easy way is to create a special SHARED SECTION for data in some dll. By simple usage of extrn keyword without putting data into shared section U cannot achive this, by this way every application will have different copies of data.
I haven't MSDN by hand on my Linux system, so try to find about shared sections in your's (as I remember it covered in IPC section).

PS: Hello, Irona, nice to hear U

[irona20]

Thank you dimm_coder
nice to hear you too

[Andreas Masur]

• Interprocess communications