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/* sysprof-clock.h
*
* Copyright 2016-2019 Christian Hergert <chergert@redhat.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. 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.
*
* Subject to the terms and conditions of this license, each copyright holder
* and contributor hereby grants to those receiving rights under this license
* a perpetual, worldwide, non-exclusive, no-charge, royalty-free,
* irrevocable (except for failure to satisfy the conditions of this license)
* patent license to make, have made, use, offer to sell, sell, import, and
* otherwise transfer this software, where such license applies only to those
* patent claims, already acquired or hereafter acquired, licensable by such
* copyright holder or contributor that are necessarily infringed by:
*
* (a) their Contribution(s) (the licensed copyrights of copyright holders
* and non-copyrightable additions of contributors, in source or binary
* form) alone; or
*
* (b) combination of their Contribution(s) with the work of authorship to
* which such Contribution(s) was added by such copyright holder or
* contributor, if, at the time the Contribution is added, such addition
* causes such combination to be necessarily infringed. The patent license
* shall not apply to any other combinations which include the
* Contribution.
*
* Except as expressly stated above, no rights or licenses from any copyright
* holder or contributor is granted under this license, whether expressly, by
* implication, estoppel or otherwise.
*
* DISCLAIMER
*
* 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 HOLDERS OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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*
* SPDX-License-Identifier: BSD-2-Clause-Patent
*/
#pragma once
#include <stdint.h>
#include <time.h>
#include "sysprof-macros.h"
#include "sysprof-version-macros.h"
SYSPROF_BEGIN_DECLS
typedef int SysprofClock;
typedef int64_t SysprofTimeStamp;
typedef int32_t SysprofTimeSysprofan;
#define SYSPROF_NSEC_PER_SEC SYSPROF_INT64_CONSTANT(1000000000)
SYSPROF_AVAILABLE_IN_ALL
SysprofClock sysprof_clock;
static inline SysprofTimeStamp
sysprof_clock_get_current_time (void)
{
struct timespec ts;
SysprofClock clock = sysprof_clock;
if SYSPROF_UNLIKELY (clock == -1)
#ifdef __APPLE__
clock = _CLOCK_MONOTONIC;
#else
clock = CLOCK_MONOTONIC;
#endif
clock_gettime (clock, &ts);
return (ts.tv_sec * SYSPROF_NSEC_PER_SEC) + ts.tv_nsec;
}
static inline SysprofTimeSysprofan
sysprof_clock_get_relative_time (SysprofTimeStamp epoch)
{
return sysprof_clock_get_current_time () - epoch;
}
SYSPROF_AVAILABLE_IN_ALL
void sysprof_clock_init (void);
SYSPROF_END_DECLS
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