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/*
*
* Copyright 2014, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef __GRPC_SUPPORT_TIME_H__
#define __GRPC_SUPPORT_TIME_H__
/* Time support.
We use gpr_timespec, which is typedefed to struct timespec on platforms which
have it. On some machines, absolute times may be in local time. */
/* Platform specific header declares gpr_timespec.
gpr_timespec contains:
time_t tv_sec; // seconds since start of 1970
int tv_nsec; // nanoseconds; always in 0..999999999; never negative.
*/
#include <grpc/support/port_platform.h>
#if defined(GPR_POSIX_TIME)
#include <grpc/support/time_posix.h>
#elif defined(GPR_WIN32)
#include <grpc/support/time_win32.h>
#else
#error could not determine platform for time
#endif
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif
/* Time constants. */
extern const gpr_timespec gpr_time_0; /* The zero time interval. */
extern const gpr_timespec gpr_inf_future; /* The far future */
extern const gpr_timespec gpr_inf_past; /* The far past. */
#define GPR_MS_PER_SEC 1000
#define GPR_US_PER_SEC 1000000
#define GPR_NS_PER_SEC 1000000000
#define GPR_NS_PER_MS 1000000
#define GPR_NS_PER_US 1000
#define GPR_US_PER_MS 1000
/* Return the current time measured from the system's default epoch. */
gpr_timespec gpr_now(void);
/* Return -ve, 0, or +ve according to whether a < b, a == b, or a > b
respectively. */
int gpr_time_cmp(gpr_timespec a, gpr_timespec b);
gpr_timespec gpr_time_max(gpr_timespec a, gpr_timespec b);
gpr_timespec gpr_time_min(gpr_timespec a, gpr_timespec b);
/* Add and subtract times. Calculations saturate at infinities. */
gpr_timespec gpr_time_add(gpr_timespec a, gpr_timespec b);
gpr_timespec gpr_time_sub(gpr_timespec a, gpr_timespec b);
/* Return a timespec representing a given number of microseconds. LONG_MIN is
interpreted as gpr_inf_past, and LONG_MAX as gpr_inf_future. */
gpr_timespec gpr_time_from_micros(long x);
gpr_timespec gpr_time_from_nanos(long x);
gpr_timespec gpr_time_from_millis(long x);
gpr_timespec gpr_time_from_seconds(long x);
gpr_timespec gpr_time_from_minutes(long x);
gpr_timespec gpr_time_from_hours(long x);
gpr_int32 gpr_time_to_millis(gpr_timespec timespec);
/* Return 1 if two times are equal or within threshold of each other,
0 otherwise */
int gpr_time_similar(gpr_timespec a, gpr_timespec b, gpr_timespec threshold);
/* Sleep until at least 'until' - an absolute timeout */
void gpr_sleep_until(gpr_timespec until);
struct timeval gpr_timeval_from_timespec(gpr_timespec t);
gpr_timespec gpr_timespec_from_timeval(struct timeval t);
double gpr_timespec_to_micros(gpr_timespec t);
#ifdef __cplusplus
}
#endif
#endif /* __GRPC_SUPPORT_TIME_H__ */
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