1178479Sjb/* 2178479Sjb * CDDL HEADER START 3178479Sjb * 4178479Sjb * The contents of this file are subject to the terms of the 5178479Sjb * Common Development and Distribution License (the "License"). 6178479Sjb * You may not use this file except in compliance with the License. 7178479Sjb * 8178479Sjb * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9178479Sjb * or http://www.opensolaris.org/os/licensing. 10178479Sjb * See the License for the specific language governing permissions 11178479Sjb * and limitations under the License. 12178479Sjb * 13178479Sjb * When distributing Covered Code, include this CDDL HEADER in each 14178479Sjb * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15178479Sjb * If applicable, add the following below this CDDL HEADER, with the 16178479Sjb * fields enclosed by brackets "[]" replaced with your own identifying 17178479Sjb * information: Portions Copyright [yyyy] [name of copyright owner] 18178479Sjb * 19178479Sjb * CDDL HEADER END 20178479Sjb */ 21178479Sjb 22178479Sjb/* 23178479Sjb * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 24178479Sjb * Use is subject to license terms. 25178479Sjb */ 26178479Sjb 27178479Sjb#ifndef _DT_PROC_H 28178479Sjb#define _DT_PROC_H 29178479Sjb 30249573Spfg#pragma ident "%Z%%M% %I% %E% SMI" 31249573Spfg 32178479Sjb#include <libproc.h> 33178479Sjb#include <dtrace.h> 34178479Sjb#include <pthread.h> 35178479Sjb#include <dt_list.h> 36178479Sjb 37178479Sjb#ifdef __cplusplus 38178479Sjbextern "C" { 39178479Sjb#endif 40178479Sjb 41178479Sjbtypedef struct dt_proc { 42178479Sjb dt_list_t dpr_list; /* prev/next pointers for lru chain */ 43178479Sjb struct dt_proc *dpr_hash; /* next pointer for pid hash chain */ 44178479Sjb dtrace_hdl_t *dpr_hdl; /* back pointer to libdtrace handle */ 45178479Sjb struct ps_prochandle *dpr_proc; /* proc handle for libproc calls */ 46178479Sjb char dpr_errmsg[BUFSIZ]; /* error message */ 47178479Sjb rd_agent_t *dpr_rtld; /* rtld handle for librtld_db calls */ 48178479Sjb pthread_mutex_t dpr_lock; /* lock for manipulating dpr_hdl */ 49178479Sjb pthread_cond_t dpr_cv; /* cond for dpr_stop/quit/done */ 50178479Sjb pid_t dpr_pid; /* pid of process */ 51178479Sjb uint_t dpr_refs; /* reference count */ 52178479Sjb uint8_t dpr_cacheable; /* cache handle using lru list */ 53178479Sjb uint8_t dpr_stop; /* stop mask: see flag bits below */ 54178479Sjb uint8_t dpr_quit; /* quit flag: ctl thread should quit */ 55178479Sjb uint8_t dpr_done; /* done flag: ctl thread has exited */ 56178479Sjb uint8_t dpr_usdt; /* usdt flag: usdt initialized */ 57178479Sjb uint8_t dpr_stale; /* proc flag: been deprecated */ 58178479Sjb uint8_t dpr_rdonly; /* proc flag: opened read-only */ 59178479Sjb pthread_t dpr_tid; /* control thread (or zero if none) */ 60178479Sjb dt_list_t dpr_bps; /* list of dt_bkpt_t structures */ 61178479Sjb} dt_proc_t; 62178479Sjb 63178479Sjbtypedef struct dt_proc_notify { 64178479Sjb dt_proc_t *dprn_dpr; /* process associated with the event */ 65178479Sjb char dprn_errmsg[BUFSIZ]; /* error message */ 66178479Sjb struct dt_proc_notify *dprn_next; /* next pointer */ 67178479Sjb} dt_proc_notify_t; 68178479Sjb 69178479Sjb#define DT_PROC_STOP_IDLE 0x01 /* idle on owner's stop request */ 70178479Sjb#define DT_PROC_STOP_CREATE 0x02 /* wait on dpr_cv at process exec */ 71178479Sjb#define DT_PROC_STOP_GRAB 0x04 /* wait on dpr_cv at process grab */ 72178479Sjb#define DT_PROC_STOP_PREINIT 0x08 /* wait on dpr_cv at rtld preinit */ 73178479Sjb#define DT_PROC_STOP_POSTINIT 0x10 /* wait on dpr_cv at rtld postinit */ 74178479Sjb#define DT_PROC_STOP_MAIN 0x20 /* wait on dpr_cv at a.out`main() */ 75178479Sjb 76178479Sjbtypedef void dt_bkpt_f(dtrace_hdl_t *, dt_proc_t *, void *); 77178479Sjb 78178479Sjbtypedef struct dt_bkpt { 79178479Sjb dt_list_t dbp_list; /* prev/next pointers for bkpt list */ 80178479Sjb dt_bkpt_f *dbp_func; /* callback function to execute */ 81178479Sjb void *dbp_data; /* callback function private data */ 82178479Sjb uintptr_t dbp_addr; /* virtual address of breakpoint */ 83178479Sjb ulong_t dbp_instr; /* saved instruction from breakpoint */ 84178479Sjb ulong_t dbp_hits; /* count of breakpoint hits for debug */ 85178479Sjb int dbp_active; /* flag indicating breakpoint is on */ 86178479Sjb} dt_bkpt_t; 87178479Sjb 88178479Sjbtypedef struct dt_proc_hash { 89178479Sjb pthread_mutex_t dph_lock; /* lock protecting dph_notify list */ 90178479Sjb pthread_cond_t dph_cv; /* cond for waiting for dph_notify */ 91178479Sjb dt_proc_notify_t *dph_notify; /* list of pending proc notifications */ 92178479Sjb dt_list_t dph_lrulist; /* list of dt_proc_t's in lru order */ 93178479Sjb uint_t dph_lrulim; /* limit on number of procs to hold */ 94178479Sjb uint_t dph_lrucnt; /* count of cached process handles */ 95178479Sjb uint_t dph_hashlen; /* size of hash chains array */ 96178479Sjb dt_proc_t *dph_hash[1]; /* hash chains array */ 97178479Sjb} dt_proc_hash_t; 98178479Sjb 99178479Sjbextern struct ps_prochandle *dt_proc_create(dtrace_hdl_t *, 100184696Srodrigc const char *, char *const *, proc_child_func *, void *); 101178479Sjb 102178479Sjbextern struct ps_prochandle *dt_proc_grab(dtrace_hdl_t *, pid_t, int, int); 103178479Sjbextern void dt_proc_release(dtrace_hdl_t *, struct ps_prochandle *); 104178479Sjbextern void dt_proc_continue(dtrace_hdl_t *, struct ps_prochandle *); 105178479Sjbextern void dt_proc_lock(dtrace_hdl_t *, struct ps_prochandle *); 106178479Sjbextern void dt_proc_unlock(dtrace_hdl_t *, struct ps_prochandle *); 107178479Sjbextern dt_proc_t *dt_proc_lookup(dtrace_hdl_t *, struct ps_prochandle *, int); 108178479Sjb 109249573Spfgextern void dt_proc_hash_create(dtrace_hdl_t *); 110249573Spfgextern void dt_proc_hash_destroy(dtrace_hdl_t *); 111178479Sjb 112178479Sjb#ifdef __cplusplus 113178479Sjb} 114178479Sjb#endif 115178479Sjb 116178479Sjb#endif /* _DT_PROC_H */ 117