lib/tevent/tevent_wakeup.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Infrastructure for async requests
   4    Copyright (C) Volker Lendecke 2008
   5    Copyright (C) Stefan Metzmacher 2009
   6
   7      ** NOTE! The following LGPL license applies to the tevent
   8      ** library. This does NOT imply that all of Samba is released
   9      ** under the LGPL
  10
  11    This library is free software; you can redistribute it and/or
  12    modify it under the terms of the GNU Lesser General Public
  13    License as published by the Free Software Foundation; either
  14    version 3 of the License, or (at your option) any later version.
  15
  16    This library is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19    Lesser General Public License for more details.
  20
  21    You should have received a copy of the GNU Lesser General Public
  22    License along with this library; if not, see <http://www.gnu.org/licenses/>.
  23 */
  24
  25 #include "replace.h"
  26 #include "tevent.h"
  27 #include "tevent_internal.h"
  28 #include "tevent_util.h"
  29
  30 struct tevent_wakeup_state {
  31         struct timeval wakeup_time;
  32 };
  33
  34 struct tevent_req *tevent_wakeup_send(TALLOC_CTX *mem_ctx,
  35                                       struct tevent_context *ev,
  36                                       struct timeval wakeup_time)
  37 {
  38         struct tevent_req *req;
  39         struct tevent_wakeup_state *state;
  40
  41         req = tevent_req_create(mem_ctx, &state,
  42                                 struct tevent_wakeup_state);
  43         if (!req) {
  44                 return NULL;
  45         }
  46         state->wakeup_time = wakeup_time;
  47
  48         if (!tevent_req_set_endtime(req, ev, wakeup_time)) {
  49                 return tevent_req_post(req, ev);
  50         }
  51         return req;
  52 }
  53
  54 bool tevent_wakeup_recv(struct tevent_req *req)
  55 {
  56         enum tevent_req_state state;
  57         uint64_t error;
  58
  59         if (tevent_req_is_error(req, &state, &error)) {
  60                 if (state == TEVENT_REQ_TIMED_OUT) {
  61                         return true;
  62                 }
  63         }
  64
  65         return false;
  66 }
  67