Hi,
Are library constructors invoked once as part of image initialise? And if so
are they always invoked on every boot warm/cold etc.?
Or are library constructors invoked every time a user component starts using
the library? Like C++ constructors, an instance?
Example Inf:
[Defines]
...
CONSTRUCTOR = CustomizedDisplayLibConstructor
...
I am looking to initialise a variable once per boot to N and right now N will
be 0. Since I want that variable used by everyone using the library I created
a static global. If I leave it as a static in my library - Is this enough?
Assuming I want 0.
static UINT32 gFlag=0;
Or should I initialise it in constructor?
EFI_STATUS
EFIAPI
CustomizedDisplayLibConstructor (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
) {
// ...
gFlag=0;
// ...
}
Alternative, perhaps I could use event OnReadyToBoot via
EfiCreateEventReadyToBootEx(...). However I am unsure when in boot time this
event is signalled.
Right now I am counting function invokes as part of debugging.
Regards,
Dave Cox
________________________________
David Cox
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