CSingleLock doesn't seem to work
hi,
how come my program never displays:
"singleLock.IsLocked"
here it is
thx!
CWinApp theApp;
CCriticalSection c;
UINT MyControllingFunction( LPVOID pParam );
int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])
{
int nRetCode = 0;
// initialize MFC and print and error on failure
if (!AfxWinInit(::GetModuleHandle(NULL), NULL, ::GetCommandLine(),
0))
{
// TODO: change error code to suit your needs
_tprintf(_T("Fatal Error: MFC initialization failed\n"));
nRetCode = 1;
}
else
{
// TODO: code your application's behavior here.
CWinThread* mythread = AfxBeginThread(MyControllingFunction,0);
Sleep(2000);
cout <<"entering loop...\n";
for (int i=0;i<20;i++) {
CSingleLock singleLock(&c);
Sleep(1000);
if (singleLock.IsLocked())
cout << "singleLock.IsLocked.\n";
else
cout << "singleLock.IsUnLocked.\n";
}
}
cin.ignore();
return nRetCode;
}
UINT MyControllingFunction( LPVOID pParam ) {
CSingleLock s(&c);
if (!s.IsLocked()) {
cout <<"locking...\n";
if (s.IsLocked())
cout <<"confirming lock\n";
Sleep (10000);
cout <<"unlocking...\n";
}
return 0;
}
here is the output
locking...
entering loop...
singleLock.IsUnLocked.
singleLock.IsUnLocked.
singleLock.IsUnLocked.
singleLock.IsUnLocked.
singleLock.IsUnLocked.
singleLock.IsUnLocked.
singleLock.IsUnLocked.
unlocking...
singleLock.IsUnLocked.
singleLock.IsUnLocked.
singleLock.IsUnLocked.
....
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