Re: [ros-dev] Error handling

[ea]

Hi Phillip,
welcome back!

Does this baroque solution based on the "Think positive!" motto satisfy 
you? :)

Emanuele

#include <all_inclusive.h>

#define CLEANUP_DEFINE  DWORD __FUNCTION__##__cleanup_mask = 0
#define CLEANUP_SET(f)  __FUNCTION__##__cleanup_mask != (m)
#define CLEANUP_DO(m,f) if (__FUNCTION__##__cleanup_mask & (m)) (f)
#define CLEANUP_BIT(b) (1<<(b))

NSTATUS DoSomething()
{
	NSTATUS Status = STATUS_SUCCESS;
	CLEANUP_DEFINE;
#define MASK_XXX CLEANUP_BIT(1)
#define MASK_YYY CLEANUP_BIT(2)
#define MASK_ZZZ CLEANUP_BIT(3)
	...

	Status = NtXXX();
	if (NT_SUCCESS(Status))
	{
		CLEANUP_SET(MASK_XXX);
		Status = NtYYY();
		if (NT_SUCCESS(Status))
		{
			CLEANUP_SET(MASK_YYY);
			Status = NtZZZ();
			if (NT_SUCCESS(Status))
			{
				CLEANUP_SET(MASK_ZZZ);
				// yay, everything worked
			}
		}
	}
	CLEANUP_DO(MASK_ZZZ,cleanupZZZ);
	CLEANUP_DO(MASK_YYY,cleanupYYY);
	CLEANUP_DO(MASK_XXX,cleanupXXX);
	return Status;
}
/* EOF */