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--- Libc/Libc-1725.40.4/gen/clock_gettime.c
+++ /dev/null
@@ -1,233 +0,0 @@
-/*
- * Copyright (c) 2016 Apple Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-
-#include <errno.h>
-#include <stdatomic.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <string.h>
-#include <time.h>
-#include <unistd.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/sysctl.h>
-#include <mach/mach_error.h>
-#include <mach/mach_time.h>
-#include <os/base_private.h>
-
-extern uint64_t __thread_selfusage(void);
-
-#define timeval2nsec(tv) (tv.tv_sec * NSEC_PER_SEC + tv.tv_usec * NSEC_PER_USEC)
-
-static uint64_t
-_boottime_fallback_usec(void)
-{
- struct timeval tv;
- size_t len = sizeof(tv);
- int ret = sysctlbyname("kern.boottime", &tv, &len, NULL, 0);
- if (ret == -1) return 0;
- return (uint64_t)tv.tv_sec * USEC_PER_SEC + (uint64_t)tv.tv_usec;
-}
-
-static int
-_mach_boottime_usec(uint64_t *boottime, struct timeval *realtime)
-{
- uint64_t bt1 = 0, bt2 = 0;
- int ret;
- do {
- bt1 = mach_boottime_usec();
- if (os_slowpath(bt1 == 0)) bt1 = _boottime_fallback_usec();
-
- atomic_thread_fence(memory_order_seq_cst);
-
- ret = gettimeofday(realtime, NULL);
- if (ret != 0) return ret;
-
- atomic_thread_fence(memory_order_seq_cst);
-
- bt2 = mach_boottime_usec();
- if (os_slowpath(bt2 == 0)) bt2 = _boottime_fallback_usec();
- } while (os_slowpath(bt1 != bt2));
- *boottime = bt1;
- return 0;
-}
-
-uint64_t
-clock_gettime_nsec_np(clockid_t clock_id)
-{
- switch(clock_id){
- case CLOCK_REALTIME: {
- struct timeval tv;
- int ret = gettimeofday(&tv, NULL);
- if (ret) return 0;
- return timeval2nsec(tv);
- }
- case CLOCK_MONOTONIC: {
- struct timeval tv;
- uint64_t boottime;
- int ret = _mach_boottime_usec(&boottime, &tv);
- if (ret) return 0;
- boottime *= NSEC_PER_USEC;
- return timeval2nsec(tv) - boottime;
- }
- case CLOCK_PROCESS_CPUTIME_ID: {
- struct rusage ru;
- int ret = getrusage(RUSAGE_SELF, &ru);
- if (ret) return 0;
- return timeval2nsec(ru.ru_utime) + timeval2nsec(ru.ru_stime);
- }
- default:
- // calls that use mach_absolute_time units fall through into a common path
- break;
- }
-
- // Mach Absolute Time unit-based calls
- mach_timebase_info_data_t tb_info;
- kern_return_t kr = mach_timebase_info(&tb_info);
- if (kr != KERN_SUCCESS) {
- errno = EINVAL;
- return 0;
- }
- uint64_t mach_time;
-
- switch(clock_id){
- case CLOCK_MONOTONIC_RAW:
- mach_time = mach_continuous_time();
- break;
- case CLOCK_MONOTONIC_RAW_APPROX:
- mach_time = mach_continuous_approximate_time();
- break;
- case CLOCK_UPTIME_RAW:
- mach_time = mach_absolute_time();
- break;
- case CLOCK_UPTIME_RAW_APPROX:
- mach_time = mach_approximate_time();
- break;
- case CLOCK_THREAD_CPUTIME_ID:
- mach_time = __thread_selfusage();
- break;
- default:
- errno = EINVAL;
- return 0;
- }
-
- return (mach_time * tb_info.numer) / tb_info.denom;
-}
-
-int
-clock_gettime(clockid_t clk_id, struct timespec *tp)
-{
- switch(clk_id){
- case CLOCK_REALTIME: {
- struct timeval tv;
- int ret = gettimeofday(&tv, NULL);
- TIMEVAL_TO_TIMESPEC(&tv, tp);
- return ret;
- }
- case CLOCK_MONOTONIC: {
- struct timeval tv;
- uint64_t boottime_usec;
- int ret = _mach_boottime_usec(&boottime_usec, &tv);
- struct timeval boottime = {
- .tv_sec = boottime_usec / USEC_PER_SEC,
- .tv_usec = boottime_usec % USEC_PER_SEC
- };
- timersub(&tv, &boottime, &tv);
- TIMEVAL_TO_TIMESPEC(&tv, tp);
- return ret;
- }
- case CLOCK_PROCESS_CPUTIME_ID: {
- struct rusage ru;
- int ret = getrusage(RUSAGE_SELF, &ru);
- timeradd(&ru.ru_utime, &ru.ru_stime, &ru.ru_utime);
- TIMEVAL_TO_TIMESPEC(&ru.ru_utime, tp);
- return ret;
- }
- case CLOCK_MONOTONIC_RAW:
- case CLOCK_MONOTONIC_RAW_APPROX:
- case CLOCK_UPTIME_RAW:
- case CLOCK_UPTIME_RAW_APPROX:
- case CLOCK_THREAD_CPUTIME_ID: {
- uint64_t ns = clock_gettime_nsec_np(clk_id);
- if (!ns) return -1;
-
- tp->tv_sec = ns/NSEC_PER_SEC;
- tp->tv_nsec = ns % NSEC_PER_SEC;
- return 0;
- }
- default:
- errno = EINVAL;
- return -1;
- }
-}
-
-int
-clock_getres(clockid_t clk_id, struct timespec *res)
-{
- switch(clk_id){
- case CLOCK_REALTIME:
- case CLOCK_MONOTONIC:
- case CLOCK_PROCESS_CPUTIME_ID:
- res->tv_nsec = NSEC_PER_USEC;
- res->tv_sec = 0;
- return 0;
-
- case CLOCK_MONOTONIC_RAW:
- case CLOCK_MONOTONIC_RAW_APPROX:
- case CLOCK_UPTIME_RAW:
- case CLOCK_UPTIME_RAW_APPROX:
- case CLOCK_THREAD_CPUTIME_ID: {
- mach_timebase_info_data_t tb_info;
- kern_return_t kr = mach_timebase_info(&tb_info);
- if (kr != KERN_SUCCESS) {
- errno = EINVAL;
- return -1;
- }
- res->tv_nsec = tb_info.numer / tb_info.denom + (tb_info.numer % tb_info.denom != 0);
- res->tv_sec = 0;
- return 0;
- }
-
- default:
- errno = EINVAL;
- return -1;
- }
-}
-
-int
-clock_settime(clockid_t clk_id, const struct timespec *tp)
-{
- switch(clk_id){
- case CLOCK_REALTIME: {
- struct timeval tv = {
- .tv_sec = (time_t)tp->tv_sec,
- .tv_usec = (suseconds_t)(tp->tv_nsec / (suseconds_t)NSEC_PER_USEC)
- };
- return settimeofday(&tv, NULL);
- }
- default:
- errno = EINVAL;
- return -1;
- }
-}