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 /* 24 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 */ 27 28 #ifndef _DT_PROC_H 29 #define _DT_PROC_H 30 31 #pragma ident "%Z%%M% %I% %E% SMI" 32 33 #include <libproc.h> 34 #include <dtrace.h> 35 #include <pthread.h> 36 #include <dt_list.h> 37 38 #ifdef __cplusplus 39 extern "C" { 40 #endif 41 42 typedef struct dt_proc { 43 dt_list_t dpr_list; /* prev/next pointers for lru chain */ 44 struct dt_proc *dpr_hash; /* next pointer for pid hash chain */ 45 dtrace_hdl_t *dpr_hdl; /* back pointer to libdtrace handle */ 46 struct ps_prochandle *dpr_proc; /* proc handle for libproc calls */ 47 char dpr_errmsg[BUFSIZ]; /* error message */ 48 rd_agent_t *dpr_rtld; /* rtld handle for librtld_db calls */ 49 pthread_mutex_t dpr_lock; /* lock for manipulating dpr_hdl */ 50 pthread_cond_t dpr_cv; /* cond for dpr_stop/quit/done */ 51 pid_t dpr_pid; /* pid of process */ 52 uint_t dpr_refs; /* reference count */ 53 uint8_t dpr_cacheable; /* cache handle using lru list */ 54 uint8_t dpr_stop; /* stop mask: see flag bits below */ 55 uint8_t dpr_quit; /* quit flag: ctl thread should quit */ 56 uint8_t dpr_done; /* done flag: ctl thread has exited */ 57 uint8_t dpr_usdt; /* usdt flag: usdt initialized */ 58 uint8_t dpr_stale; /* proc flag: been deprecated */ 59 uint8_t dpr_rdonly; /* proc flag: opened read-only */ 60 pthread_t dpr_tid; /* control thread (or zero if none) */ 61 dt_list_t dpr_bps; /* list of dt_bkpt_t structures */ 62 } dt_proc_t; 63 64 typedef struct dt_proc_notify { 65 dt_proc_t *dprn_dpr; /* process associated with the event */ 66 char dprn_errmsg[BUFSIZ]; /* error message */ 67 struct dt_proc_notify *dprn_next; /* next pointer */ 68 } dt_proc_notify_t; 69 70 #define DT_PROC_STOP_IDLE 0x01 /* idle on owner's stop request */ 71 #define DT_PROC_STOP_CREATE 0x02 /* wait on dpr_cv at process exec */ 72 #define DT_PROC_STOP_GRAB 0x04 /* wait on dpr_cv at process grab */ 73 #define DT_PROC_STOP_PREINIT 0x08 /* wait on dpr_cv at rtld preinit */ 74 #define DT_PROC_STOP_POSTINIT 0x10 /* wait on dpr_cv at rtld postinit */ 75 #define DT_PROC_STOP_MAIN 0x20 /* wait on dpr_cv at a.out`main() */ 76 77 typedef void dt_bkpt_f(dtrace_hdl_t *, dt_proc_t *, void *); 78 79 typedef struct dt_bkpt { 80 dt_list_t dbp_list; /* prev/next pointers for bkpt list */ 81 dt_bkpt_f *dbp_func; /* callback function to execute */ 82 void *dbp_data; /* callback function private data */ 83 uintptr_t dbp_addr; /* virtual address of breakpoint */ 84 ulong_t dbp_instr; /* saved instruction from breakpoint */ 85 ulong_t dbp_hits; /* count of breakpoint hits for debug */ 86 int dbp_active; /* flag indicating breakpoint is on */ 87 } dt_bkpt_t; 88 89 typedef struct dt_proc_hash { 90 pthread_mutex_t dph_lock; /* lock protecting dph_notify list */ 91 pthread_cond_t dph_cv; /* cond for waiting for dph_notify */ 92 dt_proc_notify_t *dph_notify; /* list of pending proc notifications */ 93 dt_list_t dph_lrulist; /* list of dt_proc_t's in lru order */ 94 uint_t dph_lrulim; /* limit on number of procs to hold */ 95 uint_t dph_lrucnt; /* count of cached process handles */ 96 uint_t dph_hashlen; /* size of hash chains array */ 97 dt_proc_t *dph_hash[1]; /* hash chains array */ 98 } dt_proc_hash_t; 99 100 extern struct ps_prochandle *dt_proc_create(dtrace_hdl_t *, 101 const char *, char *const *); 102 103 extern struct ps_prochandle *dt_proc_grab(dtrace_hdl_t *, pid_t, int, int); 104 extern void dt_proc_release(dtrace_hdl_t *, struct ps_prochandle *); 105 extern void dt_proc_continue(dtrace_hdl_t *, struct ps_prochandle *); 106 extern void dt_proc_lock(dtrace_hdl_t *, struct ps_prochandle *); 107 extern void dt_proc_unlock(dtrace_hdl_t *, struct ps_prochandle *); 108 extern dt_proc_t *dt_proc_lookup(dtrace_hdl_t *, struct ps_prochandle *, int); 109 110 extern void dt_proc_bpenable(dt_proc_t *); 111 extern void dt_proc_bpdisable(dt_proc_t *); 112 113 extern void dt_proc_hash_create(dtrace_hdl_t *); 114 extern void dt_proc_hash_destroy(dtrace_hdl_t *); 115 116 #ifdef __cplusplus 117 } 118 #endif 119 120 #endif /* _DT_PROC_H */ 121