#include <errno.h>
#include <stdlib.h>
#include <assert.h>
-#include <poll.h>
#include <unistd.h>
#include <fcntl.h>
current->plan = plan;
backend_plan_changed(current);
- /* If it closed, close duplex. */
- if (!current->plan.next && current->duplex) {
- current->duplex->plan = io_close_();
- backend_plan_changed(current->duplex);
- }
-
/* Call back into the loop immediately. */
io_loop_return = do_io_loop(&ready);
return true;
}
+/* Always done: call the next thing. */
+static int do_always(int fd, struct io_plan *plan)
+{
+ return 1;
+}
+
+struct io_plan io_always_(struct io_plan (*cb)(struct io_conn *, void *),
+ void *arg)
+{
+ struct io_plan plan;
+
+ assert(cb);
+ plan.io = do_always;
+ plan.next = cb;
+ plan.next_arg = arg;
+ plan.pollflag = POLLALWAYS;
+
+ return plan;
+}
+
/* Returns true if we're finished. */
static int do_write(int fd, struct io_plan *plan)
{
struct io_plan plan;
assert(cb);
+
+ if (len == 0)
+ return io_always_(cb, arg);
+
plan.u1.const_vp = data;
plan.u2.s = len;
plan.io = do_write;
struct io_plan plan;
assert(cb);
+
+ if (len == 0)
+ return io_always_(cb, arg);
+
plan.u1.cp = data;
plan.u2.s = len;
plan.io = do_read;
plan.next = cb;
plan.next_arg = arg;
+
plan.pollflag = POLLIN;
return plan;
struct io_plan plan;
assert(cb);
+
+ if (*len == 0)
+ return io_always_(cb, arg);
+
plan.u1.cp = data;
plan.u2.vp = len;
plan.io = do_read_partial;
struct io_plan plan;
assert(cb);
+
+ if (*len == 0)
+ return io_always_(cb, arg);
+
plan.u1.const_vp = data;
plan.u2.vp = len;
plan.io = do_write_partial;
void io_ready(struct io_conn *conn)
{
+ /* Beware io_close_other! */
+ if (!conn->plan.next)
+ return;
+
set_current(conn);
switch (conn->plan.io(conn->fd.fd, &conn->plan)) {
case -1: /* Failure means a new plan: close up. */
backend_plan_changed(conn);
}
set_current(NULL);
-
- /* If it closed, close duplex if not already */
- if (!conn->plan.next && conn->duplex && conn->duplex->plan.next) {
- set_current(conn->duplex);
- conn->duplex->plan = io_close();
- backend_plan_changed(conn->duplex);
- set_current(NULL);
- }
}
/* Close the connection, we're done. */
return io_close();
}
+void io_close_other(struct io_conn *conn)
+{
+ conn->plan = io_close_();
+ backend_plan_changed(conn);
+}
+
/* Exit the loop, returning this (non-NULL) arg. */
struct io_plan io_break_(void *ret, struct io_plan plan)
{
return plan;
}
+static struct io_plan io_never_called(struct io_conn *conn, void *arg)
+{
+ abort();
+}
+
+struct io_plan io_never(void)
+{
+ return io_always_(io_never_called, NULL);
+}
+
int io_conn_fd(const struct io_conn *conn)
{
return conn->fd.fd;