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 2008 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 * Java has a contract to look at sc_state and sc_cpu (PSARC/2005/351). 66 */ 67 typedef struct sc_shared { 68 volatile ushort_t sc_state; /* current LWP state */ 69 volatile char sc_sigblock; /* all signals blocked */ 70 volatile uchar_t sc_flgs; /* set only by curthread; see below */ 71 volatile processorid_t sc_cpu; /* last CPU on which LWP ran */ 72 int sc_pad; 73 sc_public_t sc_preemptctl; /* preemption control data */ 74 } sc_shared_t; 75 76 /* sc_flgs */ 77 #define SC_PARK_FLG 0x01 /* calling lwp_park() */ 78 #define SC_CANCEL_FLG 0x02 /* cancel pending and not disabled */ 79 #define SC_EINTR_FLG 0x04 /* EINTR returned due to SC_CANCEL_FLG */ 80 81 /* 82 * Possible state settings. These are same as the kernel thread states 83 * except there is no zombie state. 84 */ 85 #define SC_FREE 0x00 86 #define SC_SLEEP 0x01 87 #define SC_RUN 0x02 88 #define SC_ONPROC 0x04 89 #define SC_STOPPED 0x10 90 #define SC_WAIT 0x20 91 92 /* preemption control settings */ 93 #define SC_MAX_TICKS 2 /* max time preemption can be blocked */ 94 95 #ifdef _KERNEL 96 caddr_t schedctl(void); 97 void schedctl_init(void); 98 void schedctl_lwp_cleanup(kthread_t *); 99 void schedctl_proc_cleanup(void); 100 int schedctl_get_nopreempt(kthread_t *); 101 void schedctl_set_nopreempt(kthread_t *, short); 102 void schedctl_set_yield(kthread_t *, short); 103 int schedctl_sigblock(kthread_t *); 104 void schedctl_finish_sigblock(kthread_t *); 105 int schedctl_cancel_pending(void); 106 void schedctl_cancel_eintr(void); 107 int schedctl_is_park(void); 108 void schedctl_set_park(void); 109 void schedctl_unpark(void); 110 #endif /* _KERNEL */ 111 112 #endif /* !defined(_ASM) */ 113 114 #ifdef __cplusplus 115 } 116 #endif 117 118 #endif /* _SYS_SCHEDCTL_H */ 119