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