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 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * The enclosed is a private interface between system libraries and 28 * the kernel. It should not be used in any other way. It may be 29 * changed without notice in a minor release of Solaris. 30 */ 31 32 #ifndef _SYS_SCHEDCTL_H 33 #define _SYS_SCHEDCTL_H 34 35 #pragma ident "%Z%%M% %I% %E% SMI" 36 37 #ifdef __cplusplus 38 extern "C" { 39 #endif 40 41 #if !defined(_ASM) 42 43 #include <sys/types.h> 44 #include <sys/processor.h> 45 #ifdef _KERNEL 46 #include <sys/mutex.h> 47 #include <sys/thread.h> 48 #include <sys/vnode.h> 49 #include <sys/cpuvar.h> 50 #include <sys/door.h> 51 #endif /* _KERNEL */ 52 53 /* 54 * This "public" portion of the sc_shared data is used by libsched/libc. 55 */ 56 typedef struct sc_public { 57 volatile short sc_nopreempt; 58 volatile short sc_yield; 59 } sc_public_t; 60 61 /* 62 * The private portion of the sc_shared data is for 63 * use by user-level threading support code in libc. 64 */ 65 typedef struct sc_shared { 66 volatile ushort_t sc_state; /* current LWP state */ 67 volatile char sc_sigblock; /* all signals blocked */ 68 volatile char sc_park; /* calling lwp_park() */ 69 volatile processorid_t sc_cpu; /* last CPU on which LWP ran */ 70 int sc_pad; 71 sc_public_t sc_preemptctl; /* preemption control data */ 72 } sc_shared_t; 73 74 /* 75 * Possible state settings. These are same as the kernel thread states 76 * except there is no zombie state. 77 */ 78 #define SC_FREE 0x00 79 #define SC_SLEEP 0x01 80 #define SC_RUN 0x02 81 #define SC_ONPROC 0x04 82 #define SC_STOPPED 0x10 83 #define SC_WAIT 0x20 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_set_park(void); 100 void schedctl_unpark(void); 101 #endif /* _KERNEL */ 102 103 #endif /* !defined(_ASM) */ 104 105 #ifdef __cplusplus 106 } 107 #endif 108 109 #endif /* _SYS_SCHEDCTL_H */ 110