forked from cory/tildefriends
mingw64 OpenSSL => 3.2.0.
git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@4644 ed5197a5-7fde-0310-b194-c3ffbd925b24
This commit is contained in:
242
deps/openssl/mingw64/usr/local/include/internal/time.h
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242
deps/openssl/mingw64/usr/local/include/internal/time.h
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/*
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* Copyright 2022-2023 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#ifndef OSSL_INTERNAL_TIME_H
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# define OSSL_INTERNAL_TIME_H
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# pragma once
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# include <openssl/e_os2.h> /* uint64_t */
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# include "internal/e_os.h" /* for struct timeval */
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# include "internal/safe_math.h"
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/*
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* Internal type defining a time.
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* This should be treated as an opaque structure.
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*
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* The time datum is Unix's 1970 and at nanosecond precision, this gives
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* a range of 584 years roughly.
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*/
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typedef struct {
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uint64_t t; /* Ticks since the epoch */
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} OSSL_TIME;
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/* The precision of times allows this many values per second */
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# define OSSL_TIME_SECOND ((uint64_t)1000000000)
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/* One millisecond. */
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# define OSSL_TIME_MS (OSSL_TIME_SECOND / 1000)
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/* One microsecond. */
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# define OSSL_TIME_US (OSSL_TIME_MS / 1000)
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/* One nanosecond. */
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# define OSSL_TIME_NS (OSSL_TIME_US / 1000)
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#define ossl_seconds2time(s) ossl_ticks2time((s) * OSSL_TIME_SECOND)
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#define ossl_time2seconds(t) (ossl_time2ticks(t) / OSSL_TIME_SECOND)
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#define ossl_ms2time(ms) ossl_ticks2time((ms) * OSSL_TIME_MS)
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#define ossl_time2ms(t) (ossl_time2ticks(t) / OSSL_TIME_MS)
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#define ossl_us2time(us) ossl_ticks2time((us) * OSSL_TIME_US)
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#define ossl_time2us(t) (ossl_time2ticks(t) / OSSL_TIME_US)
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/*
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* Arithmetic operations on times.
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* These operations are saturating, in that an overflow or underflow returns
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* the largest or smallest value respectively.
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*/
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OSSL_SAFE_MATH_UNSIGNED(time, uint64_t)
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/* Convert a tick count into a time */
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static ossl_unused ossl_inline
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OSSL_TIME ossl_ticks2time(uint64_t ticks)
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{
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OSSL_TIME r;
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r.t = ticks;
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return r;
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}
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/* Convert a time to a tick count */
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static ossl_unused ossl_inline
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uint64_t ossl_time2ticks(OSSL_TIME t)
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{
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return t.t;
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}
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/* Get current time */
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OSSL_TIME ossl_time_now(void);
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/* The beginning and end of the time range */
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static ossl_unused ossl_inline
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OSSL_TIME ossl_time_zero(void)
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{
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return ossl_ticks2time(0);
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}
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static ossl_unused ossl_inline
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OSSL_TIME ossl_time_infinite(void)
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{
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return ossl_ticks2time(~(uint64_t)0);
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}
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/* Convert time to timeval */
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static ossl_unused ossl_inline
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struct timeval ossl_time_to_timeval(OSSL_TIME t)
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{
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struct timeval tv;
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int err = 0;
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/*
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* Round up any nano secs which struct timeval doesn't support. Ensures that
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* we never return a zero time if the input time is non zero
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*/
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t.t = safe_add_time(t.t, OSSL_TIME_US - 1, &err);
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if (err)
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t = ossl_time_infinite();
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#ifdef _WIN32
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tv.tv_sec = (long int)(t.t / OSSL_TIME_SECOND);
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#else
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tv.tv_sec = (time_t)(t.t / OSSL_TIME_SECOND);
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#endif
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tv.tv_usec = (t.t % OSSL_TIME_SECOND) / OSSL_TIME_US;
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return tv;
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}
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/* Convert timeval to time */
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static ossl_unused ossl_inline
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OSSL_TIME ossl_time_from_timeval(struct timeval tv)
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{
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OSSL_TIME t;
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#ifndef __DJGPP__ /* tv_sec is unsigned on djgpp. */
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if (tv.tv_sec < 0)
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return ossl_time_zero();
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#endif
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t.t = tv.tv_sec * OSSL_TIME_SECOND + tv.tv_usec * OSSL_TIME_US;
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return t;
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}
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/* Convert OSSL_TIME to time_t */
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static ossl_unused ossl_inline
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time_t ossl_time_to_time_t(OSSL_TIME t)
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{
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return (time_t)(t.t / OSSL_TIME_SECOND);
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}
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/* Convert time_t to OSSL_TIME */
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static ossl_unused ossl_inline
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OSSL_TIME ossl_time_from_time_t(time_t t)
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{
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OSSL_TIME ot;
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ot.t = t;
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ot.t *= OSSL_TIME_SECOND;
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return ot;
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}
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/* Compare two time values, return -1 if less, 1 if greater and 0 if equal */
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static ossl_unused ossl_inline
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int ossl_time_compare(OSSL_TIME a, OSSL_TIME b)
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{
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if (a.t > b.t)
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return 1;
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if (a.t < b.t)
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return -1;
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return 0;
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}
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/* Returns true if an OSSL_TIME is ossl_time_zero(). */
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static ossl_unused ossl_inline
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int ossl_time_is_zero(OSSL_TIME t)
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{
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return ossl_time_compare(t, ossl_time_zero()) == 0;
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}
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/* Returns true if an OSSL_TIME is ossl_time_infinite(). */
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static ossl_unused ossl_inline
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int ossl_time_is_infinite(OSSL_TIME t)
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{
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return ossl_time_compare(t, ossl_time_infinite()) == 0;
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}
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static ossl_unused ossl_inline
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OSSL_TIME ossl_time_add(OSSL_TIME a, OSSL_TIME b)
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{
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OSSL_TIME r;
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int err = 0;
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r.t = safe_add_time(a.t, b.t, &err);
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return err ? ossl_time_infinite() : r;
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}
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static ossl_unused ossl_inline
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OSSL_TIME ossl_time_subtract(OSSL_TIME a, OSSL_TIME b)
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{
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OSSL_TIME r;
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int err = 0;
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r.t = safe_sub_time(a.t, b.t, &err);
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return err ? ossl_time_zero() : r;
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}
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/* Returns |a - b|. */
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static ossl_unused ossl_inline
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OSSL_TIME ossl_time_abs_difference(OSSL_TIME a, OSSL_TIME b)
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{
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return a.t > b.t ? ossl_time_subtract(a, b)
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: ossl_time_subtract(b, a);
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}
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static ossl_unused ossl_inline
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OSSL_TIME ossl_time_multiply(OSSL_TIME a, uint64_t b)
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{
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OSSL_TIME r;
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int err = 0;
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r.t = safe_mul_time(a.t, b, &err);
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return err ? ossl_time_infinite() : r;
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}
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static ossl_unused ossl_inline
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OSSL_TIME ossl_time_divide(OSSL_TIME a, uint64_t b)
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{
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OSSL_TIME r;
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int err = 0;
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r.t = safe_div_time(a.t, b, &err);
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return err ? ossl_time_zero() : r;
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}
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static ossl_unused ossl_inline
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OSSL_TIME ossl_time_muldiv(OSSL_TIME a, uint64_t b, uint64_t c)
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{
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OSSL_TIME r;
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int err = 0;
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r.t = safe_muldiv_time(a.t, b, c, &err);
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return err ? ossl_time_zero() : r;
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}
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/* Return higher of the two given time values. */
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static ossl_unused ossl_inline
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OSSL_TIME ossl_time_max(OSSL_TIME a, OSSL_TIME b)
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{
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return a.t > b.t ? a : b;
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}
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/* Return the lower of the two given time values. */
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static ossl_unused ossl_inline
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OSSL_TIME ossl_time_min(OSSL_TIME a, OSSL_TIME b)
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{
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return a.t < b.t ? a : b;
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}
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#endif
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