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- /*
- * utils - misc libubox utility functions
- *
- * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
- #include "utils.h"
- #include <stdarg.h>
- #include <stdlib.h>
- #include <stdio.h>
- #define foreach_arg(_arg, _addr, _len, _first_addr, _first_len) \
- for (_addr = (_first_addr), _len = (_first_len); \
- _addr; \
- _addr = va_arg(_arg, void **), _len = _addr ? va_arg(_arg, size_t) : 0)
- void *__calloc_a(size_t len, ...)
- {
- va_list ap, ap1;
- void *ret;
- void **cur_addr;
- size_t cur_len;
- int alloc_len = 0;
- char *ptr;
- va_start(ap, len);
- va_copy(ap1, ap);
- foreach_arg(ap1, cur_addr, cur_len, &ret, len)
- alloc_len += cur_len;
- va_end(ap1);
- ptr = calloc(1, alloc_len);
- if (!ptr)
- return NULL;
- alloc_len = 0;
- foreach_arg(ap, cur_addr, cur_len, &ret, len) {
- *cur_addr = &ptr[alloc_len];
- alloc_len += cur_len;
- }
- va_end(ap);
- return ret;
- }
- #ifdef __APPLE__
- #include <mach/mach_host.h> /* host_get_clock_service() */
- #include <mach/mach_port.h> /* mach_port_deallocate() */
- #include <mach/mach_init.h> /* mach_host_self(), mach_task_self() */
- #include <mach/clock.h> /* clock_get_time() */
- static clock_serv_t clock_realtime;
- static clock_serv_t clock_monotonic;
- static void __constructor clock_name_init(void)
- {
- mach_port_t host_self = mach_host_self();
- host_get_clock_service(host_self, CLOCK_REALTIME, &clock_realtime);
- host_get_clock_service(host_self, CLOCK_MONOTONIC, &clock_monotonic);
- }
- static void __destructor clock_name_dealloc(void)
- {
- mach_port_t self = mach_task_self();
- mach_port_deallocate(self, clock_realtime);
- mach_port_deallocate(self, clock_monotonic);
- }
- int clock_gettime(int type, struct timespec *tv)
- {
- int retval = -1;
- mach_timespec_t mts;
- switch (type) {
- case CLOCK_REALTIME:
- retval = clock_get_time(clock_realtime, &mts);
- break;
- case CLOCK_MONOTONIC:
- retval = clock_get_time(clock_monotonic, &mts);
- break;
- default:
- goto out;
- }
- tv->tv_sec = mts.tv_sec;
- tv->tv_nsec = mts.tv_nsec;
- out:
- return retval;
- }
- #endif
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