| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116 | /* * * 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 __cplusplusextern "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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