osfmk/chud/chud_osfmk_callback.c

   1 /*
   2  * Copyright (c) 2003-2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22
  23 #include <stdint.h>
  24 #include <mach/boolean.h>
  25 #include <mach/mach_types.h>
  26
  27 #include <kern/kern_types.h>
  28 #include <kern/processor.h>
  29 #include <kern/timer_call.h>
  30 #include <kern/thread_call.h>
  31 #include <kern/kalloc.h>
  32 #include <kern/thread.h>
  33
  34 #include <machine/machine_routines.h>
  35 #include <machine/cpu_data.h>
  36
  37 #include <chud/chud_xnu.h>
  38 #include <chud/chud_xnu_private.h>
  39
  40 #pragma mark **** timer ****
  41 __private_extern__ chud_timer_t
  42 chudxnu_timer_alloc(chudxnu_timer_callback_func_t func, uint32_t param0)
  43 {
  44     return (chud_timer_t)thread_call_allocate((thread_call_func_t)func, (thread_call_param_t)param0);
  45 }
  46
  47 __private_extern__ kern_return_t
  48 chudxnu_timer_callback_enter(
  49         chud_timer_t timer,
  50         uint32_t param1,
  51         uint32_t time,
  52         uint32_t units)
  53 {
  54     uint64_t t_delay;
  55     clock_interval_to_deadline(time, units, &t_delay);
  56     thread_call_enter1_delayed((thread_call_t)timer, (thread_call_param_t)param1, t_delay);
  57     return KERN_SUCCESS;
  58 }
  59
  60 __private_extern__ kern_return_t
  61 chudxnu_timer_callback_cancel(chud_timer_t timer)
  62 {
  63     thread_call_cancel((thread_call_t)timer);
  64     return KERN_SUCCESS;
  65 }
  66
  67 __private_extern__ kern_return_t
  68 chudxnu_timer_free(chud_timer_t timer)
  69 {
  70     thread_call_cancel((thread_call_t)timer);
  71     thread_call_free((thread_call_t)timer);
  72     return KERN_SUCCESS;
  73 }
  74
  75 #pragma mark **** thread timer - DEPRECATED ****
  76
  77 static thread_call_t thread_timer_call = NULL;
  78 static chudxnu_thread_timer_callback_func_t thread_timer_callback_fn = NULL;
  79
  80 static void chudxnu_private_thread_timer_callback(
  81                 thread_call_param_t param0,
  82                 thread_call_param_t param1)
  83 {
  84 #pragma unused (param1)
  85     chudxnu_thread_timer_callback_func_t fn = thread_timer_callback_fn;
  86
  87     if(thread_timer_call) {
  88         thread_call_free(thread_timer_call);
  89         thread_timer_call = NULL;
  90
  91         if(fn) {
  92             (fn)((uint32_t)param0);
  93         }
  94     }
  95 }
  96
  97 // DEPRECATED
  98 __private_extern__
  99 kern_return_t chudxnu_thread_timer_callback_enter(
 100                 chudxnu_thread_timer_callback_func_t func,
 101                 uint32_t param,
 102                 uint32_t time,
 103                 uint32_t units)
 104 {
 105     if(!thread_timer_call) {
 106         uint64_t t_delay;
 107         thread_timer_callback_fn = func;
 108
 109         thread_timer_call = thread_call_allocate(
 110                                 (thread_call_func_t)
 111                                         chudxnu_private_thread_timer_callback,
 112                                 (thread_call_param_t)
 113                                         param);
 114         clock_interval_to_deadline(time, units, &t_delay);
 115         thread_call_enter_delayed(thread_timer_call, t_delay);
 116         return KERN_SUCCESS;
 117     } else {
 118         return KERN_FAILURE; // thread timer call already pending
 119     }
 120 }
 121
 122 // DEPRECATED
 123 __private_extern__
 124 kern_return_t chudxnu_thread_timer_callback_cancel(void)
 125 {
 126     if(thread_timer_call) {
 127         thread_call_cancel(thread_timer_call);
 128         thread_call_free(thread_timer_call);
 129         thread_timer_call = NULL;
 130     }
 131     thread_timer_callback_fn = NULL;
 132     return KERN_SUCCESS;
 133 }