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fd016ae3fb
Poll-loop is the core to implement main loop. It should be available in libopenvswitch. Signed-off-by: Xiao Liang <shaw.leon@gmail.com> Signed-off-by: Ben Pfaff <blp@ovn.org>
47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
/*
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* Copyright (c) 2011, 2013 Nicira, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <config.h>
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#include "timer.h"
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#include "openvswitch/poll-loop.h"
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#include "timeval.h"
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/* Returns the number of milliseconds until 'timer' expires. */
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long long int
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timer_msecs_until_expired(const struct timer *timer)
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{
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switch (timer->t) {
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case LLONG_MAX: return LLONG_MAX;
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case LLONG_MIN: return 0;
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default: return timer->t - time_msec();
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}
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}
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/* Causes poll_block() to wake when 'timer' expires.
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*
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* ('where' is used in debug logging. Commonly one would use timer_wait() to
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* automatically provide the caller's source file and line number for
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* 'where'.) */
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void
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timer_wait_at(const struct timer *timer, const char *where)
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{
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if (timer->t < LLONG_MAX) {
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poll_timer_wait_until_at(timer->t, where);
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}
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}
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