Hi programmers,
I have problems implementing a patch for Hugin. We need a hack to test for
OSX Leopard (10.5.x) and OSX Tiger (10.4.x). I do this by using
wxGetOsVersion. As such this work.
The version is reported in hex.
Leopard 10.5.6 becomes 10.56. Major version 0x10 (=16 decimal), minor
version 0x56 (=86 decimal)
Tiger 10.4.11 becomes 16 decimal, minor version < 80 dec
There are two pieces of code:
#if defined __WXMAC__ && defined __ppc__
int osVersionMajor;
int osVersionMinor;
int os = wxGetOsVersion(&osVersionMajor, &osVersionMinor);
cerr << "osVersionCheck: os is " << os << "\n" << endl;
cerr << "osVersionCheck: osVersionMajor = " << osVersionMajor << endl;
cerr << "osVersionCheck: osVersionMinor = " << osVersionMinor << endl;
if ((osVersionMajor == 0x10) && (osVersionMinor >= 0x50))
{
//let the child process exit without becoming zombie
//may do some harm to internal handling by wxWidgets, but hey it's not
working anyway
signal(SIGCHLD,SIG_IGN);
}
#endif
And the second part is
#if defined __WXMAC__ && defined __ppc__
int osVersionMajor;
int osVersionMinor;
int os = wxGetOsVersion(&osVersionMajor, &osVersionMinor);
cerr << "osVersionCheck: os is " << os << "\n" << endl;
cerr << "osVersionCheck: osVersionMajor = " << osVersionMajor << endl;
cerr << "osVersionCheck: osVersionMinor = " << osVersionMinor << endl;
if ((osVersionMajor == 0x10) && (osVersionMinor >= 0x50))
{
if(m_pidLast)
{
if(kill((pid_t)m_pidLast,0)!=0) //if not pid exists
{
DEBUG_DEBUG("Found terminated process: " <<
(pid_t)m_pidLast)
// probably should clean up the wxProcess object which was
newed when the process was launched.
// for now, nevermind the tiny memory leak... it's a hack to
workaround the bug anyway
//notify dialog that it's finished.
if (this->GetParent()) {
wxProcessEvent event( wxID_ANY, m_pidLast, 0); // assume
0 exit code
event.SetEventObject( this );
DEBUG_TRACE("Sending wxProcess event");
this->GetParent()->ProcessEvent( event );
}
}
}
}
#endif
The test checks for 0x10 as major and >=0x50 as minor version.
Leopard system.log:
osVersionCheck: os is 2
osVersionCheck: osVersionMajor = 16
osVersionCheck: osVersionMinor = 86
Tiger log:
osVersionCheck: os is 2
osVersionCheck: osVersionMajor = 16
osVersionCheck: osVersionMinor = 73
Leopard mentions 16 and 86 and the code is executed => OK
Tiger mentions 16 and 73 (73 being smaller than 80 (0x50). Still the code is
executed => Tiger Hugin hangs.
If I completely remove the code Hugin hangs on Leopard and runs on Tiger,
which is expected behaviour.
I'm completely blind why my code is executed in both cases even though the
second version check for both code snippets is false. I assume I'm doing
something wrong but I have no idea what it is.
Please can any programmer shine a light on this.
Harry
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