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/* ISC license. */
#include <errno.h>
#include <skalibs/error.h>
#include <skalibs/iopause.h>
#include <skalibs/unix-timed.h>
int timed_flush (void *b, init_func_ref getfd, init_func_ref isnonempty, init_func_ref flush, tain const *deadline, tain *stamp)
{
iopause_fd x = { .fd = (*getfd)(b), .events = IOPAUSE_WRITE, .revents = 0 } ;
while ((*isnonempty)(b))
{
int r = iopause_stamp(&x, 1, deadline, stamp) ;
if (r < 0) return 0 ;
else if (!r) return (errno = ETIMEDOUT, 0) ;
else if (x.revents & IOPAUSE_WRITE)
{
if (!((*flush)(b)) && !error_isagain(errno)) return 0 ;
}
else if (x.revents & IOPAUSE_EXCEPT) return (*flush)(b) ;
}
return 1 ;
}
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