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 2006 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 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/types.h> 33 #include <sys/proc.h> 34 #include <sys/thread.h> 35 36 #ifdef __cplusplus 37 extern "C" { 38 #endif 39 40 #ifdef _KERNEL 41 42 #define _TIMER_MAX 32 43 extern int timer_max; /* patchable via /etc/system */ 44 45 /* 46 * Bit values for the it_lock field. 47 */ 48 #define ITLK_LOCKED 0x01 49 #define ITLK_WANTED 0x02 50 #define ITLK_REMOVE 0x04 51 52 /* 53 * Bit values for the it_flags field. 54 */ 55 #define IT_SIGNAL 0x01 56 #define IT_PORT 0x02 /* use event port notification */ 57 58 struct clock_backend; 59 60 typedef struct itimer { 61 itimerspec_t it_itime; 62 hrtime_t it_hrtime; 63 ushort_t it_flags; 64 ushort_t it_lock; 65 void *it_arg; 66 sigqueue_t *it_sigq; 67 klwp_t *it_lwp; 68 struct proc *it_proc; 69 kcondvar_t it_cv; 70 int it_blockers; 71 int it_pending; 72 int it_overrun; 73 struct clock_backend *it_backend; 74 kmutex_t it_mutex; 75 void *it_portev; /* port_kevent_t pointer */ 76 void *it_portsrc; /* port_source_t pointer */ 77 int it_portfd; /* port file descriptor */ 78 } itimer_t; 79 80 typedef struct clock_backend { 81 struct sigevent clk_default; 82 int (*clk_clock_settime)(timespec_t *); 83 int (*clk_clock_gettime)(timespec_t *); 84 int (*clk_clock_getres)(timespec_t *); 85 int (*clk_timer_create)(itimer_t *, struct sigevent *); 86 int (*clk_timer_settime)(itimer_t *, int, const struct itimerspec *); 87 int (*clk_timer_gettime)(itimer_t *, struct itimerspec *); 88 int (*clk_timer_delete)(itimer_t *); 89 void (*clk_timer_lwpbind)(itimer_t *); 90 } clock_backend_t; 91 92 extern void clock_add_backend(clockid_t clock, clock_backend_t *backend); 93 94 extern void timer_fire(itimer_t *); 95 extern void timer_lwpbind(); 96 97 extern void timer_func(sigqueue_t *); 98 extern void timer_exit(void); 99 extern void timer_lwpexit(void); 100 extern clock_t hzto(struct timeval *); 101 extern clock_t timespectohz(timespec_t *, timespec_t); 102 extern clock_t timespectohz_adj(timespec_t *, timespec_t); 103 extern int itimerspecfix(timespec_t *); 104 extern void timespecadd(timespec_t *, timespec_t *); 105 extern void timespecsub(timespec_t *, timespec_t *); 106 extern void timespecfix(timespec_t *); 107 extern int xgetitimer(uint_t, struct itimerval *, int); 108 extern int xsetitimer(uint_t, struct itimerval *, int); 109 110 #define timerspecisset(tvp) ((tvp)->tv_sec || (tvp)->tv_nsec) 111 #define timerspeccmp(tvp, uvp) (((tvp)->tv_sec - (uvp)->tv_sec) ? \ 112 ((tvp)->tv_sec - (uvp)->tv_sec):((tvp)->tv_nsec - (uvp)->tv_nsec)) 113 #define timerspecclear(tvp) ((tvp)->tv_sec = (tvp)->tv_nsec = 0) 114 115 struct oldsigevent { 116 /* structure definition prior to notification attributes member */ 117 int _notify; 118 union { 119 int _signo; 120 void (*_notify_function)(union sigval); 121 } _un; 122 union sigval _value; 123 }; 124 125 #if defined(_SYSCALL32) 126 127 struct oldsigevent32 { 128 int32_t _notify; 129 union { 130 int32_t _signo; 131 caddr32_t _notify_function; 132 } _un; 133 union sigval32 _value; 134 }; 135 136 #endif /* _SYSCALL32 */ 137 #endif /* _KERNEL */ 138 139 #ifdef __cplusplus 140 } 141 #endif 142 143 #endif /* _SYS_TIMER_H */ 144