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include
grpc
support
time.h
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/*
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*
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* Copyright 2015, Google Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef GRPC_SUPPORT_TIME_H
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#define GRPC_SUPPORT_TIME_H
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/* Time support.
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We use gpr_timespec, which is analogous to struct timespec. On some
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machines, absolute times may be in local time. */
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#include <grpc/support/port_platform.h>
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#include <stddef.h>
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#include <time.h>
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#ifdef __cplusplus
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extern
"C"
{
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#endif
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typedef
struct
gpr_timespec
{
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time_t tv_sec;
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int
tv_nsec;
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}
gpr_timespec
;
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/* Time constants. */
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extern
const
gpr_timespec
gpr_time_0;
/* The zero time interval. */
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extern
const
gpr_timespec
gpr_inf_future;
/* The far future */
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extern
const
gpr_timespec
gpr_inf_past;
/* The far past. */
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#define GPR_MS_PER_SEC 1000
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#define GPR_US_PER_SEC 1000000
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#define GPR_NS_PER_SEC 1000000000
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#define GPR_NS_PER_MS 1000000
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#define GPR_NS_PER_US 1000
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#define GPR_US_PER_MS 1000
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/* Return the current time measured from the system's default epoch. */
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gpr_timespec
gpr_now(
void
);
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/* Return -ve, 0, or +ve according to whether a < b, a == b, or a > b
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respectively. */
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int
gpr_time_cmp(
gpr_timespec
a,
gpr_timespec
b);
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gpr_timespec
gpr_time_max(
gpr_timespec
a,
gpr_timespec
b);
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gpr_timespec
gpr_time_min(
gpr_timespec
a,
gpr_timespec
b);
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/* Add and subtract times. Calculations saturate at infinities. */
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gpr_timespec
gpr_time_add(
gpr_timespec
a,
gpr_timespec
b);
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gpr_timespec
gpr_time_sub(
gpr_timespec
a,
gpr_timespec
b);
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/* Return a timespec representing a given number of time units. LONG_MIN is
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interpreted as gpr_inf_past, and LONG_MAX as gpr_inf_future. */
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gpr_timespec
gpr_time_from_micros(
long
x);
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gpr_timespec
gpr_time_from_nanos(
long
x);
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gpr_timespec
gpr_time_from_millis(
long
x);
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gpr_timespec
gpr_time_from_seconds(
long
x);
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gpr_timespec
gpr_time_from_minutes(
long
x);
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gpr_timespec
gpr_time_from_hours(
long
x);
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gpr_int32 gpr_time_to_millis(
gpr_timespec
timespec);
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/* Return 1 if two times are equal or within threshold of each other,
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0 otherwise */
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int
gpr_time_similar(
gpr_timespec
a,
gpr_timespec
b,
gpr_timespec
threshold);
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/* Sleep until at least 'until' - an absolute timeout */
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void
gpr_sleep_until(
gpr_timespec
until);
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double
gpr_timespec_to_micros(
gpr_timespec
t);
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#ifdef __cplusplus
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}
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#endif
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#endif
/* GRPC_SUPPORT_TIME_H */
gpr_timespec
Definition:
time.h:48
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