Re: [Mingw-users] Unpredictable exe-file sizes (totally weird)

[Luke D. <cod...@ho...>]

I am fairly sure that iostreams make all the difference. Try putting a 'cout
<< "Hello world!" << endl' in your list.cpp and see what you get. I would
expect std::set to be smaller than all the I/O classes so it is not all that
surprising (and the size of your actual code in main() would be
insignificant).

Luke

----- Original Message ----- 
From: "Anders Lindén" <Min...@li...>
To: <Min...@li...>
Sent: Thursday, May 22, 2003 6:20 PM
Subject: [Mingw-users] Unpredictable exe-file sizes (totally weird)


> Hello again.
> I have two projects,
>
> project 1:
>
> filename: test.cpp
> Lines: 8
> compilation cmdline: g++ test.cpp -o test.exe
> description: writes "hello world" on the screen
> resulting exefile size: 448537 bytes. After I have used the "strip"
utility, it becomes 210944 bytes
>
> project 2:
> filename: list.cpp
> Lines: 54
> compilation cmdline: g++ list.cpp -lpsapi -o listprocesses.exe
> description: Aquires a process token to get "debug" privilege, enumerates
the processes and put the process ID:s in a std::set,
> which results
> in that they get sorted. Then it loops through the set and opens each of
the processes and gets its filename, which it writes out
> together with the
> process ID.
> resulting exefile size: 123746 bytes. After I have used the "strip"
utility, it becomes 60416 bytes
>
>
> Ok, now the question is, how can project 1 possibly get bigger than
project 2?
> My compiler is: MinGW-2.0.0-3
>
>
> test.cpp and list.cpp follows:
>
>
>
> test.cpp:
> ========================================
> #include <iostream>
>
> using namespace std;
>
> int main()
> {
>   cout << "Hello world!" << endl;
>   return 0;
> }
>
>
>
> list.cpp:
> ========================================
> #include <stdio.h>
> #include <windows.h>
> #include <psapi.h>
> #include <set>
>
> using namespace std;
>
> set<DWORD> processes;
>
> int main()
> {
>   char buffer[4096];
>   HANDLE handle;
>   DWORD array[4096];
>   DWORD arraysize;
>   HANDLE accesstoken;
>   TOKEN_PRIVILEGES tkp;
>
>   /* Try to get some more influence */
>   handle=GetCurrentProcess();
>   if (OpenProcessToken(handle,
>                         TOKEN_ADJUST_PRIVILEGES,
>                         &accesstoken))
>   {
>     if (LookupPrivilegeValue(NULL, SE_DEBUG_NAME,
&tkp.Privileges[0].Luid))
>     {
>       tkp.PrivilegeCount=1;
>       tkp.Privileges[0].Attributes=SE_PRIVILEGE_ENABLED;
>       AdjustTokenPrivileges(accesstoken, FALSE, &tkp, sizeof(tkp), NULL,
NULL);
>     }
>     CloseHandle(accesstoken);
>   }
>
>   if (!EnumProcesses( array ,4096*sizeof(DWORD),&arraysize))
>     return fputs("Too many processes to enumerate (>4096)\n",stderr),1;
>   int numprocesses=arraysize/sizeof(DWORD);
>   for (int i=0; i<numprocesses; i++)
>     processes.insert(array[i]);
>   set<DWORD>::iterator iter;
>   for (iter=processes.begin(); iter!=processes.end(); iter++)
>   {
>     if ((handle=OpenProcess(PROCESS_ALL_ACCESS,FALSE,*iter))==NULL)
>       printf("%d\t\n",*iter);
>     else
>     {
>       if (GetModuleBaseName(handle,NULL,buffer,4096)>0)
>         printf("%d\t%s\n",*iter,buffer);
>       else
>         printf("%d\t-\n",*iter);
>       CloseHandle(handle);
>     }
>   }
>   return 0;
> }
>
>
>
>
> /Anders Lindén