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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 1997-2003 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* 28 * The enclosed is a private interface between system libraries and 29 * the kernel. It should not be used in any other way. It may be 30 * changed without notice in a minor release of Solaris. 31 */ 32 33 #ifndef _SYS_SCHEDCTL_H 34 #define _SYS_SCHEDCTL_H 35 36 #pragma ident "%Z%%M% %I% %E% SMI" 37 38 #ifdef __cplusplus 39 extern "C" { 40 #endif 41 42 #if !defined(_ASM) 43 44 #include <sys/types.h> 45 #include <sys/processor.h> 46 #ifdef _KERNEL 47 #include <sys/mutex.h> 48 #include <sys/thread.h> 49 #include <sys/vnode.h> 50 #include <sys/cpuvar.h> 51 #include <sys/door.h> 52 #endif /* _KERNEL */ 53 54 /* 55 * This "public" portion of the sc_shared data is used by libsched/libc. 56 */ 57 typedef struct sc_public { 58 volatile short sc_nopreempt; 59 volatile short sc_yield; 60 } sc_public_t; 61 62 /* 63 * The private portion of the sc_shared data is for 64 * use by user-level threading support code in libc. 65 */ 66 typedef struct sc_shared { 67 volatile ushort_t sc_state; /* current LWP state */ 68 volatile char sc_sigblock; /* all signals blocked */ 69 volatile char sc_park; /* calling lwp_park() */ 70 volatile processorid_t sc_cpu; /* last CPU on which LWP ran */ 71 int sc_pad; 72 sc_public_t sc_preemptctl; /* preemption control data */ 73 } sc_shared_t; 74 75 /* 76 * Possible state settings. These are same as the kernel thread states 77 * except there is no zombie state. 78 */ 79 #define SC_FREE 0x00 80 #define SC_SLEEP 0x01 81 #define SC_RUN 0x02 82 #define SC_ONPROC 0x04 83 #define SC_STOPPED 0x10 84 85 /* preemption control settings */ 86 #define SC_MAX_TICKS 2 /* max time preemption can be blocked */ 87 88 #ifdef _KERNEL 89 caddr_t schedctl(void); 90 void schedctl_init(void); 91 void schedctl_lwp_cleanup(kthread_t *); 92 void schedctl_proc_cleanup(void); 93 int schedctl_get_nopreempt(kthread_t *); 94 void schedctl_set_nopreempt(kthread_t *, short); 95 void schedctl_set_yield(kthread_t *, short); 96 int schedctl_sigblock(kthread_t *); 97 void schedctl_finish_sigblock(kthread_t *); 98 int schedctl_is_park(void); 99 void schedctl_unpark(void); 100 #endif /* _KERNEL */ 101 102 #endif /* !defined(_ASM) */ 103 104 #ifdef __cplusplus 105 } 106 #endif 107 108 #endif /* _SYS_SCHEDCTL_H */ 109