On Mon, Jan 21, 2013 at 1:11 AM, Enlightenment SVN
<[email protected]> wrote:
> +#define EINA_COW_WRITE_BEGIN(Cow, Read, Write_Type, Write) \
> + do \
> + { \
> + Write_Type *Write; \
> + \
> + Write = eina_cow_write(Cow, ((const Eina_Cow_Data**)&(Read)));
> +
> +#define EINA_COW_WRITE_END(Cow, Read, Write) \
> + eina_cow_done(Cow, ((const Eina_Cow_Data**)&(Read)), Write); \
> + } \
> + while (0);
> +
Found a (possibly) better way to perform this without pesky BEGIN/END macros:
#define EINA_COW_WRITE(Cow, Read, Write) \
for (eina_cow_write(Cow, ((const Eina_Cow_Data**)&(Read))); \
eina_cow_is_done_writing(Cow); \
eina_cow_done(Cow, ((const Eina_Cow_Data**)&(Read)), Write))
You'll have to declare the variable outside, but the usage ends up
being a lot simpler:
int r, w;
EINA_COW_WRITE(cow, r, w)
{
do_whatever(r);
do_another_thing(w);
}
Not sure how to implement eina_cow_is_done_writing(), though. Any clues?
Leandro
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