sf->fd.cb(&sf->fd, ULOOP_READ);
}
-static void ustream_fd_read_pending(struct ustream_fd *sf, bool *update)
+static void ustream_fd_read_pending(struct ustream_fd *sf, bool *more)
{
struct ustream *s = &sf->stream;
int buflen = 0;
}
ustream_fill_read(s, len);
+ *more = true;
} while (1);
}
return len;
}
-static void ustream_uloop_cb(struct uloop_fd *fd, unsigned int events)
+static bool __ustream_fd_poll(struct ustream_fd *sf, unsigned int events)
{
- struct ustream_fd *sf = container_of(fd, struct ustream_fd, fd);
struct ustream *s = &sf->stream;
- bool update = false;
+ struct uloop_fd *fd = &sf->fd;
+ bool more = false;
if (events & ULOOP_READ)
- ustream_fd_read_pending(sf, &update);
+ ustream_fd_read_pending(sf, &more);
if (events & ULOOP_WRITE) {
if (ustream_write_pending(s))
ustream_fd_set_uloop(s);
ustream_state_change(s);
}
+
+ return more;
}
+static bool ustream_fd_poll(struct ustream *s)
+{
+ struct ustream_fd *sf = container_of(s, struct ustream_fd, stream);
+
+ return __ustream_fd_poll(sf, ULOOP_READ);
+}
+
+static void ustream_uloop_cb(struct uloop_fd *fd, unsigned int events)
+{
+ struct ustream_fd *sf = container_of(fd, struct ustream_fd, fd);
+
+ __ustream_fd_poll(sf, events);
+}
static void ustream_fd_free(struct ustream *s)
{
s->set_read_blocked = ustream_fd_set_uloop;
s->write = ustream_fd_write;
s->free = ustream_fd_free;
+ s->poll = ustream_fd_poll;
ustream_fd_set_uloop(s);
}
void (*set_read_blocked)(struct ustream *s);
/*
+ * poll: (optional)
+ * defined by the upstream implementation, called to request polling for
+ * available data.
+ * returns true if data was fetched.
+ */
+ bool (*poll)(struct ustream *s);
+
+ /*
* ustream user should set this if the input stream is expected
* to contain string data. the core will keep all data 0-terminated.
*/
uloop_timeout_set(&s->state_change, 0);
}
+static inline bool ustream_poll(struct ustream *s)
+{
+ if (!s->poll)
+ return false;
+
+ return s->poll(s);
+}
+
#endif