1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* 28 * Copyright (c) 2015, Joyent, Inc. All rights reserved. 29 */ 30 31 #ifndef _SYS_TIMER_H 32 #define _SYS_TIMER_H 33 34 #include <sys/types.h> 35 #include <sys/proc.h> 36 #include <sys/thread.h> 37 38 #ifdef __cplusplus 39 extern "C" { 40 #endif 41 42 #ifdef _KERNEL 43 44 #define _TIMER_MAX 32 45 extern int timer_max; /* patchable via /etc/system */ 46 47 /* 48 * Bit values for the it_lock field. 49 */ 50 #define ITLK_LOCKED 0x01 51 #define ITLK_WANTED 0x02 52 #define ITLK_REMOVE 0x04 53 54 /* 55 * Bit values for the it_flags field. 56 */ 57 #define IT_SIGNAL 0x01 58 #define IT_PORT 0x02 /* use event port notification */ 59 60 struct clock_backend; 61 62 struct itimer; 63 typedef struct itimer itimer_t; 64 65 struct itimer { 66 itimerspec_t it_itime; 67 hrtime_t it_hrtime; 68 ushort_t it_flags; 69 ushort_t it_lock; 70 void *it_arg; /* clock backend-specific data */ 71 struct proc *it_proc; 72 union { 73 struct { 74 sigqueue_t *__it_sigq; 75 klwp_t *__it_lwp; 76 } __proc; 77 void *__it_frontend; 78 } __data; /* timer frontend-specific data */ 79 kcondvar_t it_cv; 80 int it_blockers; 81 int it_pending; 82 int it_overrun; 83 struct clock_backend *it_backend; 84 void (*it_fire)(itimer_t *); 85 kmutex_t it_mutex; 86 void *it_portev; /* port_kevent_t pointer */ 87 void *it_portsrc; /* port_source_t pointer */ 88 int it_portfd; /* port file descriptor */ 89 }; 90 91 #define it_sigq __data.__proc.__it_sigq 92 #define it_lwp __data.__proc.__it_lwp 93 #define it_frontend __data.__it_frontend 94 95 typedef struct clock_backend { 96 struct sigevent clk_default; 97 int (*clk_clock_settime)(timespec_t *); 98 int (*clk_clock_gettime)(timespec_t *); 99 int (*clk_clock_getres)(timespec_t *); 100 int (*clk_timer_create)(itimer_t *, void (*)(itimer_t *)); 101 int (*clk_timer_settime)(itimer_t *, int, const struct itimerspec *); 102 int (*clk_timer_gettime)(itimer_t *, struct itimerspec *); 103 int (*clk_timer_delete)(itimer_t *); 104 void (*clk_timer_lwpbind)(itimer_t *); 105 } clock_backend_t; 106 107 extern void clock_add_backend(clockid_t clock, clock_backend_t *backend); 108 extern clock_backend_t *clock_get_backend(clockid_t clock); 109 110 extern void timer_lwpbind(); 111 112 extern void timer_func(sigqueue_t *); 113 extern void timer_exit(void); 114 extern void timer_lwpexit(void); 115 extern clock_t hzto(struct timeval *); 116 extern clock_t timespectohz(timespec_t *, timespec_t); 117 extern int64_t timespectohz64(timespec_t *); 118 extern int itimerspecfix(timespec_t *); 119 extern void timespecadd(timespec_t *, timespec_t *); 120 extern void timespecsub(timespec_t *, timespec_t *); 121 extern void timespecfix(timespec_t *); 122 extern int xgetitimer(uint_t, struct itimerval *, int); 123 extern int xsetitimer(uint_t, struct itimerval *, int); 124 extern void delete_itimer_realprof(void); 125 126 #define timerspecisset(tvp) ((tvp)->tv_sec || (tvp)->tv_nsec) 127 #define timerspeccmp(tvp, uvp) (((tvp)->tv_sec - (uvp)->tv_sec) ? \ 128 ((tvp)->tv_sec - (uvp)->tv_sec):((tvp)->tv_nsec - (uvp)->tv_nsec)) 129 #define timerspecclear(tvp) ((tvp)->tv_sec = (tvp)->tv_nsec = 0) 130 131 struct oldsigevent { 132 /* structure definition prior to notification attributes member */ 133 int _notify; 134 union { 135 int _signo; 136 void (*_notify_function)(union sigval); 137 } _un; 138 union sigval _value; 139 }; 140 141 #if defined(_SYSCALL32) 142 143 struct oldsigevent32 { 144 int32_t _notify; 145 union { 146 int32_t _signo; 147 caddr32_t _notify_function; 148 } _un; 149 union sigval32 _value; 150 }; 151 152 #endif /* _SYSCALL32 */ 153 #endif /* _KERNEL */ 154 155 #ifdef __cplusplus 156 } 157 #endif 158 159 #endif /* _SYS_TIMER_H */ 160