ad9aa180d3
It turns out that mach_absolute_time() is not monotonic at all. While at it, convert the CLOCK_REALTIME implementation to using clock_get_time() as well. Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
103 lines
2.6 KiB
C
103 lines
2.6 KiB
C
/*
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* utils - misc libubox utility functions
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*
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* Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "utils.h"
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#include <stdarg.h>
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#include <stdlib.h>
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#include <stdio.h>
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#define foreach_arg(_arg, _addr, _len, _first_addr, _first_len) \
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for (_addr = (_first_addr), _len = (_first_len); \
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_addr; \
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_addr = va_arg(_arg, void **), _len = _addr ? va_arg(_arg, size_t) : 0)
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void *__calloc_a(size_t len, ...)
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{
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va_list ap, ap1;
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void *ret;
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void **cur_addr;
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size_t cur_len;
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int alloc_len = 0;
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char *ptr;
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va_start(ap, len);
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va_copy(ap1, ap);
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foreach_arg(ap1, cur_addr, cur_len, &ret, len)
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alloc_len += cur_len;
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va_end(ap1);
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ptr = calloc(1, alloc_len);
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alloc_len = 0;
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foreach_arg(ap, cur_addr, cur_len, &ret, len) {
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*cur_addr = &ptr[alloc_len];
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alloc_len += cur_len;
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}
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va_end(ap);
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return ret;
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}
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#ifdef __APPLE__
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#include <mach/mach_host.h> /* host_get_clock_service() */
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#include <mach/mach_port.h> /* mach_port_deallocate() */
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#include <mach/mach_init.h> /* mach_host_self(), mach_task_self() */
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#include <mach/clock.h> /* clock_get_time() */
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static clock_serv_t clock_realtime;
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static clock_serv_t clock_monotonic;
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static void __constructor clock_name_init(void)
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{
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mach_port_t host_self = mach_host_self();
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host_get_clock_service(host_self, CLOCK_REALTIME, &clock_realtime);
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host_get_clock_service(host_self, CLOCK_MONOTONIC, &clock_monotonic);
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}
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static void __destructor clock_name_dealloc(void)
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{
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mach_port_t self = mach_task_self();
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mach_port_deallocate(self, clock_realtime);
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mach_port_deallocate(self, clock_monotonic);
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}
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int clock_gettime(int type, struct timespec *tv)
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{
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int retval = -1;
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mach_timespec_t mts;
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switch (type) {
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case CLOCK_REALTIME:
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retval = clock_get_time(clock_realtime, &mts);
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break;
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case CLOCK_MONOTONIC:
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retval = clock_get_time(clock_monotonic, &mts);
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break;
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default:
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goto out;
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}
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tv->tv_sec = mts.tv_sec;
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tv->tv_nsec = mts.tv_nsec;
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out:
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return retval;
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}
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#endif
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