1*7c478bd9Sstevel@tonic-gate /* 2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START 3*7c478bd9Sstevel@tonic-gate * 4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*7c478bd9Sstevel@tonic-gate * with the License. 8*7c478bd9Sstevel@tonic-gate * 9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 12*7c478bd9Sstevel@tonic-gate * and limitations under the License. 13*7c478bd9Sstevel@tonic-gate * 14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*7c478bd9Sstevel@tonic-gate * 20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END 21*7c478bd9Sstevel@tonic-gate */ 22*7c478bd9Sstevel@tonic-gate /* 23*7c478bd9Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*7c478bd9Sstevel@tonic-gate * Use is subject to license terms. 25*7c478bd9Sstevel@tonic-gate */ 26*7c478bd9Sstevel@tonic-gate 27*7c478bd9Sstevel@tonic-gate #ifndef _MDB_WCB_H 28*7c478bd9Sstevel@tonic-gate #define _MDB_WCB_H 29*7c478bd9Sstevel@tonic-gate 30*7c478bd9Sstevel@tonic-gate #include <mdb/mdb_module.h> 31*7c478bd9Sstevel@tonic-gate 32*7c478bd9Sstevel@tonic-gate #ifdef __cplusplus 33*7c478bd9Sstevel@tonic-gate extern "C" { 34*7c478bd9Sstevel@tonic-gate #endif 35*7c478bd9Sstevel@tonic-gate 36*7c478bd9Sstevel@tonic-gate /* 37*7c478bd9Sstevel@tonic-gate * Values for w_buftag, used as a guard to ensure that the walk state hasn't 38*7c478bd9Sstevel@tonic-gate * overflowed into the wcb. w_buftag is INITIAL when the wcb is first 39*7c478bd9Sstevel@tonic-gate * allocated, ACTIVE when added to a frame, and PASSIVE when removed. 40*7c478bd9Sstevel@tonic-gate */ 41*7c478bd9Sstevel@tonic-gate #define WCB_TAG_INITIAL 0xcbbabecb /* Magic tag for initialized wcb */ 42*7c478bd9Sstevel@tonic-gate #define WCB_TAG_ACTIVE 0xcba1cba1 /* Magic tag for active wcb */ 43*7c478bd9Sstevel@tonic-gate #define WCB_TAG_PASSIVE 0xcbdeadcb /* Magic tag for inactive wcb */ 44*7c478bd9Sstevel@tonic-gate 45*7c478bd9Sstevel@tonic-gate struct mdb_frame; /* Forward declaration */ 46*7c478bd9Sstevel@tonic-gate 47*7c478bd9Sstevel@tonic-gate typedef struct mdb_wcb { 48*7c478bd9Sstevel@tonic-gate mdb_walk_state_t w_state; /* Walk soft state */ 49*7c478bd9Sstevel@tonic-gate uint32_t w_buftag; /* WCB_TAG_* */ 50*7c478bd9Sstevel@tonic-gate int w_inited; /* Set if we've called walk_init */ 51*7c478bd9Sstevel@tonic-gate struct mdb_wcb *w_lyr_head; /* Link to head wcb in layer chain */ 52*7c478bd9Sstevel@tonic-gate struct mdb_wcb *w_lyr_link; /* Link to next wcb in layer chain */ 53*7c478bd9Sstevel@tonic-gate struct mdb_wcb *w_link; /* Link to next wcb in global chain */ 54*7c478bd9Sstevel@tonic-gate const mdb_iwalker_t *w_walker; /* Walker corresponding to this wcb */ 55*7c478bd9Sstevel@tonic-gate } mdb_wcb_t; 56*7c478bd9Sstevel@tonic-gate 57*7c478bd9Sstevel@tonic-gate extern mdb_wcb_t *mdb_wcb_create(mdb_iwalker_t *, mdb_walk_cb_t, 58*7c478bd9Sstevel@tonic-gate void *, uintptr_t); 59*7c478bd9Sstevel@tonic-gate 60*7c478bd9Sstevel@tonic-gate extern void mdb_wcb_destroy(mdb_wcb_t *); 61*7c478bd9Sstevel@tonic-gate extern mdb_wcb_t *mdb_wcb_from_state(mdb_walk_state_t *); 62*7c478bd9Sstevel@tonic-gate 63*7c478bd9Sstevel@tonic-gate extern void mdb_wcb_insert(mdb_wcb_t *, struct mdb_frame *); 64*7c478bd9Sstevel@tonic-gate extern void mdb_wcb_delete(mdb_wcb_t *, struct mdb_frame *); 65*7c478bd9Sstevel@tonic-gate extern void mdb_wcb_purge(mdb_wcb_t **); 66*7c478bd9Sstevel@tonic-gate 67*7c478bd9Sstevel@tonic-gate #ifdef __cplusplus 68*7c478bd9Sstevel@tonic-gate } 69*7c478bd9Sstevel@tonic-gate #endif 70*7c478bd9Sstevel@tonic-gate 71*7c478bd9Sstevel@tonic-gate #endif /* _MDB_WCB_H */ 72