osfmk/chud/chud_osfmk_callback.c

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