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 #ifndef _SYS_TIMER_H 28 #define _SYS_TIMER_H 29 30 #include <sys/types.h> 31 #include <sys/proc.h> 32 #include <sys/thread.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 #ifdef _KERNEL 39 40 #define _TIMER_MAX 32 41 extern int timer_max; /* patchable via /etc/system */ 42 43 /* 44 * Bit values for the it_lock field. 45 */ 46 #define ITLK_LOCKED 0x01 47 #define ITLK_WANTED 0x02 48 #define ITLK_REMOVE 0x04 49 50 /* 51 * Bit values for the it_flags field. 52 */ 53 #define IT_SIGNAL 0x01 54 #define IT_PORT 0x02 /* use event port notification */ 55 56 struct clock_backend; 57 58 typedef struct itimer { 59 itimerspec_t it_itime; 60 hrtime_t it_hrtime; 61 ushort_t it_flags; 62 ushort_t it_lock; 63 void *it_arg; 64 sigqueue_t *it_sigq; 65 klwp_t *it_lwp; 66 struct proc *it_proc; 67 kcondvar_t it_cv; 68 int it_blockers; 69 int it_pending; 70 int it_overrun; 71 struct clock_backend *it_backend; 72 kmutex_t it_mutex; 73 void *it_portev; /* port_kevent_t pointer */ 74 void *it_portsrc; /* port_source_t pointer */ 75 int it_portfd; /* port file descriptor */ 76 } itimer_t; 77 78 typedef struct clock_backend { 79 struct sigevent clk_default; 80 int (*clk_clock_settime)(timespec_t *); 81 int (*clk_clock_gettime)(timespec_t *); 82 int (*clk_clock_getres)(timespec_t *); 83 int (*clk_timer_create)(itimer_t *, struct sigevent *); 84 int (*clk_timer_settime)(itimer_t *, int, const struct itimerspec *); 85 int (*clk_timer_gettime)(itimer_t *, struct itimerspec *); 86 int (*clk_timer_delete)(itimer_t *); 87 void (*clk_timer_lwpbind)(itimer_t *); 88 } clock_backend_t; 89 90 extern void clock_add_backend(clockid_t clock, clock_backend_t *backend); 91 92 extern void timer_fire(itimer_t *); 93 extern void timer_lwpbind(); 94 95 extern void timer_func(sigqueue_t *); 96 extern void timer_exit(void); 97 extern void timer_lwpexit(void); 98 extern clock_t hzto(struct timeval *); 99 extern clock_t timespectohz(timespec_t *, timespec_t); 100 extern int64_t timespectohz64(timespec_t *); 101 extern int itimerspecfix(timespec_t *); 102 extern void timespecadd(timespec_t *, timespec_t *); 103 extern void timespecsub(timespec_t *, timespec_t *); 104 extern void timespecfix(timespec_t *); 105 extern int xgetitimer(uint_t, struct itimerval *, int); 106 extern int xsetitimer(uint_t, struct itimerval *, int); 107 extern void delete_itimer_realprof(void); 108 109 #define timerspecisset(tvp) ((tvp)->tv_sec || (tvp)->tv_nsec) 110 #define timerspeccmp(tvp, uvp) (((tvp)->tv_sec - (uvp)->tv_sec) ? \ 111 ((tvp)->tv_sec - (uvp)->tv_sec):((tvp)->tv_nsec - (uvp)->tv_nsec)) 112 #define timerspecclear(tvp) ((tvp)->tv_sec = (tvp)->tv_nsec = 0) 113 114 struct oldsigevent { 115 /* structure definition prior to notification attributes member */ 116 int _notify; 117 union { 118 int _signo; 119 void (*_notify_function)(union sigval); 120 } _un; 121 union sigval _value; 122 }; 123 124 #if defined(_SYSCALL32) 125 126 struct oldsigevent32 { 127 int32_t _notify; 128 union { 129 int32_t _signo; 130 caddr32_t _notify_function; 131 } _un; 132 union sigval32 _value; 133 }; 134 135 #endif /* _SYSCALL32 */ 136 #endif /* _KERNEL */ 137 138 #ifdef __cplusplus 139 } 140 #endif 141 142 #endif /* _SYS_TIMER_H */ 143