17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 541efec22Sraf * Common Development and Distribution License (the "License"). 641efec22Sraf * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 2141efec22Sraf 227c478bd9Sstevel@tonic-gate /* 2341efec22Sraf * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 277c478bd9Sstevel@tonic-gate #ifndef _SYS_SYNCH_H 287c478bd9Sstevel@tonic-gate #define _SYS_SYNCH_H 297c478bd9Sstevel@tonic-gate 307c478bd9Sstevel@tonic-gate #ifndef _ASM 317c478bd9Sstevel@tonic-gate #include <sys/types.h> 327c478bd9Sstevel@tonic-gate #include <sys/int_types.h> 337c478bd9Sstevel@tonic-gate #endif /* _ASM */ 347c478bd9Sstevel@tonic-gate 357c478bd9Sstevel@tonic-gate #ifdef __cplusplus 367c478bd9Sstevel@tonic-gate extern "C" { 377c478bd9Sstevel@tonic-gate #endif 387c478bd9Sstevel@tonic-gate 397c478bd9Sstevel@tonic-gate #ifndef _ASM 407c478bd9Sstevel@tonic-gate /* 417c478bd9Sstevel@tonic-gate * Thread and LWP mutexes have the same type 427c478bd9Sstevel@tonic-gate * definitions. 437c478bd9Sstevel@tonic-gate * 447c478bd9Sstevel@tonic-gate * NOTE: 457c478bd9Sstevel@tonic-gate * 467c478bd9Sstevel@tonic-gate * POSIX requires that <pthread.h> define the structures pthread_mutex_t 477c478bd9Sstevel@tonic-gate * and pthread_cond_t. Although these structures are identical to mutex_t 487c478bd9Sstevel@tonic-gate * (lwp_mutex_t) and cond_t (lwp_cond_t), defined here, a typedef of these 497c478bd9Sstevel@tonic-gate * types would require including <synch.h> in <pthread.h>, pulling in 507c478bd9Sstevel@tonic-gate * non-posix symbols/constants, violating POSIX namespace restrictions. Hence, 517c478bd9Sstevel@tonic-gate * pthread_mutex_t/pthread_cond_t have been redefined (in <sys/types.h>). 527c478bd9Sstevel@tonic-gate * Any modifications done to mutex_t/lwp_mutex_t or cond_t/lwp_cond_t must 537c478bd9Sstevel@tonic-gate * also be done to pthread_mutex_t/pthread_cond_t. 547c478bd9Sstevel@tonic-gate */ 557c478bd9Sstevel@tonic-gate typedef struct _lwp_mutex { 567c478bd9Sstevel@tonic-gate struct { 577c478bd9Sstevel@tonic-gate uint16_t flag1; 587c478bd9Sstevel@tonic-gate uint8_t flag2; 597c478bd9Sstevel@tonic-gate uint8_t ceiling; 607c478bd9Sstevel@tonic-gate union { 617c478bd9Sstevel@tonic-gate uint16_t bcptype; 627c478bd9Sstevel@tonic-gate struct { 637c478bd9Sstevel@tonic-gate uint8_t count_type1; 647c478bd9Sstevel@tonic-gate uint8_t count_type2; 657c478bd9Sstevel@tonic-gate } mtype_rcount; 667c478bd9Sstevel@tonic-gate } mbcp_type_un; 677c478bd9Sstevel@tonic-gate uint16_t magic; 687c478bd9Sstevel@tonic-gate } flags; 697c478bd9Sstevel@tonic-gate union { 707c478bd9Sstevel@tonic-gate struct { 717c478bd9Sstevel@tonic-gate uint8_t pad[8]; 727c478bd9Sstevel@tonic-gate } lock64; 737c478bd9Sstevel@tonic-gate struct { 747c478bd9Sstevel@tonic-gate uint32_t ownerpid; 757c478bd9Sstevel@tonic-gate uint32_t lockword; 767c478bd9Sstevel@tonic-gate } lock32; 777c478bd9Sstevel@tonic-gate upad64_t owner64; 787c478bd9Sstevel@tonic-gate } lock; 797c478bd9Sstevel@tonic-gate upad64_t data; 807c478bd9Sstevel@tonic-gate } lwp_mutex_t; 817c478bd9Sstevel@tonic-gate 827c478bd9Sstevel@tonic-gate /* 837c478bd9Sstevel@tonic-gate * Thread and LWP condition variables have the same 847c478bd9Sstevel@tonic-gate * type definition. 857c478bd9Sstevel@tonic-gate * NOTE: 867c478bd9Sstevel@tonic-gate * The layout of the following structure should be kept in sync with the 877c478bd9Sstevel@tonic-gate * layout of pthread_cond_t in sys/types.h. See NOTE above for lwp_mutex_t. 887c478bd9Sstevel@tonic-gate */ 897c478bd9Sstevel@tonic-gate typedef struct _lwp_cond { 907c478bd9Sstevel@tonic-gate struct { 917c478bd9Sstevel@tonic-gate uint8_t flag[4]; 927c478bd9Sstevel@tonic-gate uint16_t type; 937c478bd9Sstevel@tonic-gate uint16_t magic; 947c478bd9Sstevel@tonic-gate } flags; 957c478bd9Sstevel@tonic-gate upad64_t data; 967c478bd9Sstevel@tonic-gate } lwp_cond_t; 977c478bd9Sstevel@tonic-gate 987c478bd9Sstevel@tonic-gate /* 997c478bd9Sstevel@tonic-gate * LWP semaphores 1007c478bd9Sstevel@tonic-gate */ 1017c478bd9Sstevel@tonic-gate typedef struct _lwp_sema { 1027c478bd9Sstevel@tonic-gate uint32_t count; /* semaphore count */ 1037c478bd9Sstevel@tonic-gate uint16_t type; 1047c478bd9Sstevel@tonic-gate uint16_t magic; 1057c478bd9Sstevel@tonic-gate uint8_t flags[8]; /* last byte reserved for waiters */ 1067c478bd9Sstevel@tonic-gate upad64_t data; /* optional data */ 1077c478bd9Sstevel@tonic-gate } lwp_sema_t; 1087c478bd9Sstevel@tonic-gate 1097c478bd9Sstevel@tonic-gate /* 1107c478bd9Sstevel@tonic-gate * Thread and LWP rwlocks have the same type definition. 1117c478bd9Sstevel@tonic-gate * NOTE: The layout of this structure should be kept in sync with the layout 1127c478bd9Sstevel@tonic-gate * of the correponding structure of pthread_rwlock_t in sys/types.h. 1137c478bd9Sstevel@tonic-gate * Also, because we have to deal with C++, there is an identical structure 1147c478bd9Sstevel@tonic-gate * for rwlock_t in head/sync.h that we cannot change. 1157c478bd9Sstevel@tonic-gate */ 1167c478bd9Sstevel@tonic-gate typedef struct _lwp_rwlock { 11741efec22Sraf int32_t readers; /* rwstate word */ 1187c478bd9Sstevel@tonic-gate uint16_t type; 1197c478bd9Sstevel@tonic-gate uint16_t magic; 12041efec22Sraf lwp_mutex_t mutex; /* used with process-shared rwlocks */ 12141efec22Sraf lwp_cond_t readercv; /* used only to indicate ownership */ 12241efec22Sraf lwp_cond_t writercv; /* used only to indicate ownership */ 1237c478bd9Sstevel@tonic-gate } lwp_rwlock_t; 1247c478bd9Sstevel@tonic-gate 1257c478bd9Sstevel@tonic-gate #endif /* _ASM */ 1267c478bd9Sstevel@tonic-gate /* 1277c478bd9Sstevel@tonic-gate * Definitions of synchronization types. 1287c478bd9Sstevel@tonic-gate */ 1297c478bd9Sstevel@tonic-gate #define USYNC_THREAD 0x00 /* private to a process */ 1307c478bd9Sstevel@tonic-gate #define USYNC_PROCESS 0x01 /* shared by processes */ 1317c478bd9Sstevel@tonic-gate 132883492d5Sraf /* Keep the following values in sync with pthread.h */ 1337c478bd9Sstevel@tonic-gate #define LOCK_NORMAL 0x00 /* same as USYNC_THREAD */ 134883492d5Sraf #define LOCK_SHARED 0x01 /* same as USYNC_PROCESS */ 1357c478bd9Sstevel@tonic-gate #define LOCK_ERRORCHECK 0x02 /* error check lock */ 1367c478bd9Sstevel@tonic-gate #define LOCK_RECURSIVE 0x04 /* recursive lock */ 137883492d5Sraf #define LOCK_PRIO_INHERIT 0x10 /* priority inheritance lock */ 138883492d5Sraf #define LOCK_PRIO_PROTECT 0x20 /* priority ceiling lock */ 139883492d5Sraf #define LOCK_ROBUST 0x40 /* robust lock */ 1407c478bd9Sstevel@tonic-gate 141883492d5Sraf /* 142883492d5Sraf * USYNC_PROCESS_ROBUST is a deprecated historical type. It is mapped 143883492d5Sraf * into (USYNC_PROCESS | LOCK_ROBUST) by mutex_init(). Application code 144883492d5Sraf * should be revised to use (USYNC_PROCESS | LOCK_ROBUST) rather than this. 145883492d5Sraf */ 146883492d5Sraf #define USYNC_PROCESS_ROBUST 0x08 1477c478bd9Sstevel@tonic-gate 1487c478bd9Sstevel@tonic-gate /* 1497c478bd9Sstevel@tonic-gate * lwp_mutex_t flags 1507c478bd9Sstevel@tonic-gate */ 1517c478bd9Sstevel@tonic-gate #define LOCK_OWNERDEAD 0x1 1527c478bd9Sstevel@tonic-gate #define LOCK_NOTRECOVERABLE 0x2 1537c478bd9Sstevel@tonic-gate #define LOCK_INITED 0x4 1547c478bd9Sstevel@tonic-gate #define LOCK_UNMAPPED 0x8 155*50718d3eSRobert Mustacchi #define LOCK_DEADLOCK 0x10 1567c478bd9Sstevel@tonic-gate 1577c478bd9Sstevel@tonic-gate #ifdef __cplusplus 1587c478bd9Sstevel@tonic-gate } 1597c478bd9Sstevel@tonic-gate #endif 1607c478bd9Sstevel@tonic-gate 1617c478bd9Sstevel@tonic-gate #endif /* _SYS_SYNCH_H */ 162