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 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_LWP_UPIMUTEX_IMPL_H 28 #define _SYS_LWP_UPIMUTEX_IMPL_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/thread.h> 33 #include <sys/lwp.h> 34 35 #ifdef __cplusplus 36 extern "C" { 37 #endif 38 39 typedef struct upimutex upimutex_t; 40 typedef struct upib upib_t; 41 42 struct upib { 43 kmutex_t upib_lock; 44 upimutex_t *upib_first; 45 }; 46 47 struct upimutex { 48 struct _kthread *upi_owner; /* owner */ 49 int upi_waiter; /* wait bit */ 50 upib_t *upi_upibp; /* point back to upib bucket in hash chain */ 51 lwp_mutex_t *upi_vaddr; /* virtual address, i.e. user lock ptr */ 52 lwpchan_t upi_lwpchan; /* lwpchan of virtual address */ 53 upimutex_t *upi_nextchain; /* next in hash chain */ 54 upimutex_t *upi_nextowned; /* list of mutexes owned by lwp */ 55 }; 56 57 #define UPILWPCHAN_BITS 9 58 #define UPILWPCHAN_TABSIZ (1 << UPILWPCHAN_BITS) 59 #define UPIMUTEX_TABSIZE UPILWPCHAN_TABSIZ 60 #define UPILWPCHAN_HASH(lwpchan) \ 61 (((uintptr_t)((lwpchan).lc_wchan0)^(uintptr_t)((lwpchan).lc_wchan)) ^ \ 62 (((uintptr_t)((lwpchan).lc_wchan0)^(uintptr_t)((lwpchan).lc_wchan)) >> \ 63 UPILWPCHAN_BITS)) & (UPIMUTEX_TABSIZE - 1) 64 #define UPI_CHAIN(lwpchan) upimutextab[UPILWPCHAN_HASH((lwpchan))] 65 66 #define UPIMUTEX_TRY 1 67 #define UPIMUTEX_BLOCK 0 68 69 #ifdef _KERNEL 70 extern void upimutex_cleanup(); 71 #endif /* _KERNEL */ 72 73 #ifdef __cplusplus 74 } 75 #endif 76 77 #endif /* _SYS_LWP_UPIMUTEX_IMPL_H */ 78