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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 | /* * Copyright (c) 2000-2008 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@ */ /* * @OSF_COPYRIGHT@ */ /* */ #ifndef _KERN_CLOCK_H_ #define _KERN_CLOCK_H_ #include <stdint.h> #include <mach/mach_types.h> #include <mach/clock_types.h> #include <mach/message.h> #include <mach/mach_time.h> #include <mach/boolean.h> #include <kern/kern_types.h> #include <sys/cdefs.h> #ifdef __LP64__ typedef unsigned long clock_sec_t; typedef unsigned int clock_usec_t, clock_nsec_t; #else /* __LP64__ */ typedef uint32_t clock_sec_t; typedef uint32_t clock_usec_t, clock_nsec_t; #endif /* __LP64__ */ #ifdef MACH_KERNEL_PRIVATE #include <kern/queue.h> /* * Clock operations list structure. Contains vectors to machine * dependent clock routines. */ struct clock_ops { int (*c_config)(void); /* configuration */ int (*c_init)(void); /* initialize */ kern_return_t (*c_gettime)( /* get time */ mach_timespec_t *cur_time); kern_return_t (*c_getattr)( /* get attributes */ clock_flavor_t flavor, clock_attr_t attr, mach_msg_type_number_t *count); }; typedef const struct clock_ops *clock_ops_t; typedef struct clock_ops clock_ops_data_t; /* * Actual clock object data structure. Contains the machine * dependent operations list and clock operation ports. */ struct clock { clock_ops_t cl_ops; /* operations list */ struct ipc_port *cl_service; /* service port */ struct ipc_port *cl_control; /* control port */ }; typedef struct clock clock_data_t; /* * Configure the clock system. */ extern void clock_config(void); extern void clock_oldconfig(void); /* * Initialize the clock system. */ extern void clock_init(void); extern void clock_oldinit(void); extern void clock_timebase_init(void); /* * Initialize the clock ipc service facility. */ extern void clock_service_create(void); extern void clock_gettimeofday_set_commpage( uint64_t abstime, uint64_t sec, uint64_t frac, uint64_t scale, uint64_t tick_per_sec); extern void machine_delay_until(uint64_t interval, uint64_t deadline); extern uint32_t hz_tick_interval; extern void nanotime_to_absolutetime( clock_sec_t secs, clock_nsec_t nanosecs, uint64_t *result); #endif /* MACH_KERNEL_PRIVATE */ __BEGIN_DECLS #ifdef XNU_KERNEL_PRIVATE extern void clock_adjtime( long *secs, int *microsecs); extern void clock_initialize_calendar(void); extern void clock_wakeup_calendar(void); extern void clock_update_calendar(void); extern void clock_get_calendar_uptime(clock_sec_t *secs); extern void clock_gettimeofday_new(clock_sec_t *secs, clock_usec_t *microsecs); extern void clock_gettimeofday( clock_sec_t *secs, clock_usec_t *microsecs); extern void clock_gettimeofday_and_absolute_time( clock_sec_t *secs, clock_usec_t *microsecs, uint64_t *absolute_time); extern void clock_set_calendar_microtime( clock_sec_t secs, clock_usec_t microsecs); extern void clock_get_boottime_nanotime( clock_sec_t *secs, clock_nsec_t *nanosecs); extern void clock_get_boottime_microtime( clock_sec_t *secs, clock_nsec_t *microsecs); extern void absolutetime_to_microtime( uint64_t abstime, clock_sec_t *secs, clock_usec_t *microsecs); extern void clock_deadline_for_periodic_event( uint64_t interval, uint64_t abstime, uint64_t *deadline); #if CONFIG_DTRACE extern void clock_get_calendar_nanotime_nowait( clock_sec_t *secs, clock_nsec_t *nanosecs); #endif /* CONFIG_DTRACE */ boolean_t kdp_clock_is_locked(void); #endif /* XNU_KERNEL_PRIVATE */ extern void clock_get_calendar_microtime( clock_sec_t *secs, clock_usec_t *microsecs); extern void clock_get_calendar_absolute_and_microtime( clock_sec_t *secs, clock_usec_t *microsecs, uint64_t *abstime); extern void clock_get_calendar_nanotime( clock_sec_t *secs, clock_nsec_t *nanosecs); extern void clock_get_system_microtime( clock_sec_t *secs, clock_usec_t *microsecs); extern void clock_get_system_nanotime( clock_sec_t *secs, clock_nsec_t *nanosecs); extern void clock_timebase_info( mach_timebase_info_t info); extern void clock_get_uptime( uint64_t *result); extern void clock_interval_to_deadline( uint32_t interval, uint32_t scale_factor, uint64_t *result); extern void nanoseconds_to_deadline( uint64_t interval, uint64_t *result); extern void clock_interval_to_absolutetime_interval( uint32_t interval, uint32_t scale_factor, uint64_t *result); extern void clock_absolutetime_interval_to_deadline( uint64_t abstime, uint64_t *result); extern void clock_continuoustime_interval_to_deadline( uint64_t abstime, uint64_t *result); extern void clock_delay_until( uint64_t deadline); extern void absolutetime_to_nanoseconds( uint64_t abstime, uint64_t *result); extern void nanoseconds_to_absolutetime( uint64_t nanoseconds, uint64_t *result); /* * Absolute <-> Continuous Time conversion routines * * It is the caller's responsibility to ensure that these functions are * synchronized with respect to updates to the continuous timebase. The * returned value is only valid until the next update to the continuous * timebase. * * If the value to be returned by continuoustime_to_absolutetime would be * negative, zero is returned. This occurs when the provided continuous time * is less the amount of the time the system spent asleep and /must/ be * handled. */ extern uint64_t absolutetime_to_continuoustime( uint64_t abstime); extern uint64_t continuoustime_to_absolutetime( uint64_t conttime); extern uint64_t mach_absolutetime_asleep; extern uint64_t mach_absolutetime_last_sleep; #if HIBERNATION && HAS_CONTINUOUS_HWCLOCK extern uint64_t hwclock_conttime_offset; #endif #ifdef KERNEL_PRIVATE /* * Obsolete interfaces. */ #ifndef __LP64__ #define MACH_TIMESPEC_SEC_MAX (0 - 1) #define MACH_TIMESPEC_NSEC_MAX (NSEC_PER_SEC - 1) #define MACH_TIMESPEC_MAX ((mach_timespec_t) { \ MACH_TIMESPEC_SEC_MAX, \ MACH_TIMESPEC_NSEC_MAX } ) #define MACH_TIMESPEC_ZERO ((mach_timespec_t) { 0, 0 } ) #define ADD_MACH_TIMESPEC_NSEC(t1, nsec) \ do { \ (t1)->tv_nsec += (clock_res_t)(nsec); \ if ((clock_res_t)(nsec) > 0 && \ (t1)->tv_nsec >= NSEC_PER_SEC) { \ (t1)->tv_nsec -= NSEC_PER_SEC; \ (t1)->tv_sec += 1; \ } \ else if ((clock_res_t)(nsec) < 0 && \ (t1)->tv_nsec < 0) { \ (t1)->tv_nsec += NSEC_PER_SEC; \ (t1)->tv_sec -= 1; \ } \ } while (0) #include <Availability.h> /* Use mach_absolute_time() */ extern mach_timespec_t clock_get_system_value(void) __OSX_AVAILABLE_BUT_DEPRECATED(__MAC_10_0, __MAC_10_8, __IPHONE_2_0, __IPHONE_6_0); extern mach_timespec_t clock_get_calendar_value(void) __OSX_AVAILABLE_BUT_DEPRECATED(__MAC_10_0, __MAC_10_8, __IPHONE_2_0, __IPHONE_6_0); #else /* __LP64__ */ #ifdef XNU_KERNEL_PRIVATE #define MACH_TIMESPEC_ZERO ((mach_timespec_t) { 0, 0 } ) #endif /* XNU_KERNEL_PRIVATE */ #endif /* __LP64__ */ extern void delay_for_interval( uint32_t interval, uint32_t scale_factor); extern void delay_for_interval_with_leeway( uint32_t interval, uint32_t leeway, uint32_t scale_factor); #ifdef XNU_KERNEL_PRIVATE extern void delay(int usec); #endif /* XNU_KERNEL_PRIVATE */ #endif /* KERNEL_PRIVATE */ __END_DECLS #endif /* _KERN_CLOCK_H_ */ |