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--- xnu/xnu-12377.101.15/bsd/net/devtimer.c
+++ /dev/null
@@ -1,263 +0,0 @@
-/*
- * Copyright (c) 2004-2021 Apple Inc. All rights reserved.
- *
- * @APPLE_OSREFERENCE_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. The rights granted to you under the License
- * may not be used to create, or enable the creation or redistribution of,
- * unlawful or unlicensed copies of an Apple operating system, or to
- * circumvent, violate, or enable the circumvention or violation of, any
- * terms of an Apple operating system software license agreement.
- *
- * 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_OSREFERENCE_LICENSE_HEADER_END@
- */
-
-/*
- * devtimer.c
- * - timer source based on <kern/thread_call.h>
- */
-
-/*
- * Modification History:
- *
- * June 22, 2004 Dieter Siegmund (dieter@apple.com)
- * - created
- */
-#include <sys/param.h>
-#include <sys/kernel.h>
-#include <sys/malloc.h>
-#include <kern/thread_call.h>
-#include <net/devtimer.h>
-#include <os/refcnt.h>
-
-#ifdef DEVTIMER_DEBUG
-#define _devtimer_printf printf
-#else /* !DEVTIMER_DEBUG */
-static __inline__ void
-_devtimer_printf(__unused const char * fmt, ...)
-{
-}
-#endif /* !DEVTIMER_DEBUG */
-
-struct devtimer_s {
- void * dt_callout;
- devtimer_timeout_func dt_timeout_func;
- devtimer_process_func dt_process_func;
- void * dt_arg0;
- void * dt_arg1;
- void * dt_arg2;
- int dt_generation;
- struct os_refcnt dt_retain_count;
-};
-
-static __inline__ void
-timeval_add(struct timeval tv1, struct timeval tv2,
- struct timeval * result)
-{
- result->tv_sec = tv1.tv_sec + tv2.tv_sec;
- result->tv_usec = tv1.tv_usec + tv2.tv_usec;
- if (result->tv_usec > DEVTIMER_USECS_PER_SEC) {
- result->tv_usec -= DEVTIMER_USECS_PER_SEC;
- result->tv_sec++;
- }
- return;
-}
-
-static __inline__ uint64_t
-timeval_to_absolutetime(struct timeval tv)
-{
- uint64_t secs;
- uint64_t usecs;
-
- clock_interval_to_absolutetime_interval(tv.tv_sec, NSEC_PER_SEC,
- &secs);
- clock_interval_to_absolutetime_interval(tv.tv_usec, NSEC_PER_USEC,
- &usecs);
- return secs + usecs;
-}
-
-
-__private_extern__ int
-devtimer_valid(devtimer_ref timer)
-{
- return timer->dt_callout != NULL;
-}
-
-__private_extern__ void
-devtimer_retain(devtimer_ref timer)
-{
- os_ref_retain(&timer->dt_retain_count);
-}
-
-__private_extern__ void
-devtimer_invalidate(devtimer_ref timer)
-{
- devtimer_cancel(timer);
- timer->dt_arg0 = NULL;
- if (timer->dt_callout != NULL) {
- thread_call_free(timer->dt_callout);
- timer->dt_callout = NULL;
- }
- return;
-}
-
-__private_extern__ void
-devtimer_release(devtimer_ref timer)
-{
- if (os_ref_release(&timer->dt_retain_count) == 0) {
- devtimer_invalidate(timer);
- kfree_type(struct devtimer_s, timer);
- _devtimer_printf("devtimer: timer released\n");
- }
-}
-
-static void
-devtimer_process(void * param0, void * param1)
-{
- int generation = *(int*)param1;
- devtimer_process_func process_func;
- devtimer_timeout_func timeout_func;
- devtimer_ref timer = (devtimer_ref)param0;
-
- process_func = timer->dt_process_func;
- if (process_func != NULL) {
- (*process_func)(timer, devtimer_process_func_event_lock);
- }
- timeout_func = timer->dt_timeout_func;
- if (timeout_func != NULL) {
- timer->dt_timeout_func = NULL;
- if (timer->dt_generation == generation) {
- (*timeout_func)(timer->dt_arg0, timer->dt_arg1, timer->dt_arg2);
- }
- }
- devtimer_release(timer);
- if (process_func != NULL) {
- (*process_func)(timer, devtimer_process_func_event_unlock);
- }
- return;
-}
-
-__private_extern__ void *
-devtimer_arg0(devtimer_ref timer)
-{
- return timer->dt_arg0;
-}
-
-__private_extern__ devtimer_ref
-devtimer_create(devtimer_process_func process_func, void * arg0)
-{
- devtimer_ref timer;
-
- timer = kalloc_type(struct devtimer_s, Z_WAITOK | Z_ZERO | Z_NOFAIL);
- os_ref_init(&timer->dt_retain_count, NULL);
- timer->dt_callout = thread_call_allocate(devtimer_process, timer);
- if (timer->dt_callout == NULL) {
- _devtimer_printf("devtimer: thread_call_allocate failed\n");
- devtimer_release(timer);
- timer = NULL;
- }
- timer->dt_process_func = process_func;
- timer->dt_arg0 = arg0;
- return timer;
-}
-
-__private_extern__ void
-devtimer_set_absolute(devtimer_ref timer,
- struct timeval abs_time,
- devtimer_timeout_func timeout_func,
- void * arg1, void * arg2)
-{
- if (timer->dt_callout == NULL) {
- printf("devtimer_set_absolute: uninitialized/freed timer\n");
- return;
- }
- devtimer_cancel(timer);
- if (timeout_func == NULL) {
- return;
- }
- timer->dt_timeout_func = timeout_func;
- timer->dt_arg1 = arg1;
- timer->dt_arg2 = arg2;
- _devtimer_printf("devtimer: wakeup time is (%d.%d)\n",
- abs_time.tv_sec, abs_time.tv_usec);
- timer->dt_generation++;
- devtimer_retain(timer);
- thread_call_enter1_delayed(timer->dt_callout,
- &timer->dt_generation,
- timeval_to_absolutetime(abs_time));
- return;
-}
-
-__private_extern__ void
-devtimer_set_relative(devtimer_ref timer,
- struct timeval rel_time,
- devtimer_timeout_func timeout_func,
- void * arg1, void * arg2)
-{
- struct timeval abs_time;
- struct timeval current_time;
-
- current_time = devtimer_current_time();
- timeval_add(current_time, rel_time, &abs_time);
- devtimer_set_absolute(timer, abs_time, timeout_func, arg1, arg2);
- return;
-}
-
-__private_extern__ void
-devtimer_cancel(devtimer_ref timer)
-{
- if (timer->dt_timeout_func != NULL) {
- timer->dt_timeout_func = NULL;
- if (timer->dt_callout != NULL) {
- _devtimer_printf("devtimer: cancelling timer source\n");
- if (thread_call_cancel(timer->dt_callout)) {
- devtimer_release(timer);
- } else {
- _devtimer_printf("devtimer: delayed release\n");
- }
- }
- }
- return;
-}
-
-__private_extern__ int
-devtimer_enabled(devtimer_ref timer)
-{
- return timer->dt_timeout_func != NULL;
-}
-
-__private_extern__ int32_t
-devtimer_current_secs(void)
-{
- struct timeval tv;
-
- tv = devtimer_current_time();
- return tv.tv_sec;
-}
-
-__private_extern__ struct timeval
-devtimer_current_time(void)
-{
- struct timeval tv;
- clock_sec_t sec;
- clock_usec_t usec;
-
- clock_get_system_microtime(&sec, &usec);
- tv.tv_sec = sec;
- tv.tv_usec = usec;
- return tv;
-}