osfmk/chud/chud_osfmk_callback.c

   1 /*
   2  * Copyright (c) 2003-2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License.  The rights granted to you under the
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30
  31 #include <stdint.h>
  32 #include <mach/boolean.h>
  33 #include <mach/mach_types.h>
  34
  35 #include <kern/kern_types.h>
  36 #include <kern/processor.h>
  37 #include <kern/timer_call.h>
  38 #include <kern/thread_call.h>
  39 #include <kern/kalloc.h>
  40 #include <kern/thread.h>
  41
  42 #include <machine/machine_routines.h>
  43 #include <machine/cpu_data.h>
  44
  45 #include <chud/chud_xnu.h>
  46 #include <chud/chud_xnu_private.h>
  47
  48 #pragma mark **** timer ****
  49 __private_extern__ chud_timer_t
  50 chudxnu_timer_alloc(chudxnu_timer_callback_func_t func, uint32_t param0)
  51 {
  52     return (chud_timer_t)thread_call_allocate((thread_call_func_t)func, (thread_call_param_t)param0);
  53 }
  54
  55 __private_extern__ kern_return_t
  56 chudxnu_timer_callback_enter(
  57         chud_timer_t timer,
  58         uint32_t param1,
  59         uint32_t time,
  60         uint32_t units)
  61 {
  62     uint64_t t_delay;
  63     clock_interval_to_deadline(time, units, &t_delay);
  64     thread_call_enter1_delayed((thread_call_t)timer, (thread_call_param_t)param1, t_delay);
  65     return KERN_SUCCESS;
  66 }
  67
  68 __private_extern__ kern_return_t
  69 chudxnu_timer_callback_cancel(chud_timer_t timer)
  70 {
  71     thread_call_cancel((thread_call_t)timer);
  72     return KERN_SUCCESS;
  73 }
  74
  75 __private_extern__ kern_return_t
  76 chudxnu_timer_free(chud_timer_t timer)
  77 {
  78     thread_call_cancel((thread_call_t)timer);
  79     thread_call_free((thread_call_t)timer);
  80     return KERN_SUCCESS;
  81 }
  82
  83 #pragma mark **** thread timer - DEPRECATED ****
  84
  85 static thread_call_t thread_timer_call = NULL;
  86 static chudxnu_thread_timer_callback_func_t thread_timer_callback_fn = NULL;
  87
  88 static void chudxnu_private_thread_timer_callback(
  89                 thread_call_param_t param0,
  90                 thread_call_param_t param1)
  91 {
  92 #pragma unused (param1)
  93     chudxnu_thread_timer_callback_func_t fn = thread_timer_callback_fn;
  94
  95     if(thread_timer_call) {
  96         thread_call_free(thread_timer_call);
  97         thread_timer_call = NULL;
  98
  99         if(fn) {
 100             (fn)((uint32_t)param0);
 101         }
 102     }
 103 }
 104
 105 // DEPRECATED
 106 __private_extern__
 107 kern_return_t chudxnu_thread_timer_callback_enter(
 108                 chudxnu_thread_timer_callback_func_t func,
 109                 uint32_t param,
 110                 uint32_t time,
 111                 uint32_t units)
 112 {
 113     if(!thread_timer_call) {
 114         uint64_t t_delay;
 115         thread_timer_callback_fn = func;
 116
 117         thread_timer_call = thread_call_allocate(
 118                                 (thread_call_func_t)
 119                                         chudxnu_private_thread_timer_callback,
 120                                 (thread_call_param_t)
 121                                         param);
 122         clock_interval_to_deadline(time, units, &t_delay);
 123         thread_call_enter_delayed(thread_timer_call, t_delay);
 124         return KERN_SUCCESS;
 125     } else {
 126         return KERN_FAILURE; // thread timer call already pending
 127     }
 128 }
 129
 130 // DEPRECATED
 131 __private_extern__
 132 kern_return_t chudxnu_thread_timer_callback_cancel(void)
 133 {
 134     if(thread_timer_call) {
 135         thread_call_cancel(thread_timer_call);
 136         thread_call_free(thread_timer_call);
 137         thread_timer_call = NULL;
 138     }
 139     thread_timer_callback_fn = NULL;
 140     return KERN_SUCCESS;
 141 }