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8650b075 | 1 | /* |
5453ae20 | 2 | * Copyright (c) 2011, 2013 Nicira, Inc. |
8650b075 EJ |
3 | * |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | ||
17 | #include <config.h> | |
18 | ||
19 | #include "timer.h" | |
20 | ||
fd016ae3 | 21 | #include "openvswitch/poll-loop.h" |
8650b075 EJ |
22 | #include "timeval.h" |
23 | ||
24 | /* Returns the number of milliseconds until 'timer' expires. */ | |
25 | long long int | |
26 | timer_msecs_until_expired(const struct timer *timer) | |
27 | { | |
28 | switch (timer->t) { | |
29 | case LLONG_MAX: return LLONG_MAX; | |
30 | case LLONG_MIN: return 0; | |
31 | default: return timer->t - time_msec(); | |
32 | } | |
33 | } | |
34 | ||
5453ae20 BP |
35 | /* Causes poll_block() to wake when 'timer' expires. |
36 | * | |
37 | * ('where' is used in debug logging. Commonly one would use timer_wait() to | |
38 | * automatically provide the caller's source file and line number for | |
39 | * 'where'.) */ | |
8650b075 | 40 | void |
5453ae20 | 41 | timer_wait_at(const struct timer *timer, const char *where) |
8650b075 EJ |
42 | { |
43 | if (timer->t < LLONG_MAX) { | |
5453ae20 | 44 | poll_timer_wait_until_at(timer->t, where); |
8650b075 EJ |
45 | } |
46 | } |