Hello,
I'm writing an application to handle notifications even though it will not
be running. On the sysAppLaunchCmdSystemReset launch code I allocate my
globals and then register for notifications using SysNotifyRegister passing
in a pointer to my callback function as well as a pointer to my globals...
MyGlobalsType* globalsP;
UInt16 cardNo =0;
LocalID dbID =0;
globalsP = (MyGlobalsType*)MemPtrNew(sizeof(MyGlobalsType));
if (!globalsP) {
return NULL;
}
//set owner to system so that it persists
MemPtrSetOwner(globalsP, 0);
//register for notification
SysCurAppDatabase(&cardNo,&dbID);
SysNotifyRegister(cardNo, dbID, sysNotifyMenuCmdBarOpenEvent,
CommandBarOpenProc, sysNotifyNormalPriority, globalsP);
This code actually works fine, except under very low memory conditions it
fails. I've isolated the problem to the globalsP pointer being freed or
moved when a call to MemHeapCompact() is called. After
MemHeapCompact() is called, if I try to access my globals from within
CommandBarOpenProc a Fatal Exception will often occur.
I'm probably just not allocating the memory properly so please any help is
appreciated.
Thanks,
Jason McCarty
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