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Diffstat (limited to 'lib/libdtrace/common/dt_proc.h')
| -rw-r--r-- | lib/libdtrace/common/dt_proc.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/lib/libdtrace/common/dt_proc.h b/lib/libdtrace/common/dt_proc.h new file mode 100644 index 000000000000..a6c43826ac7c --- /dev/null +++ b/lib/libdtrace/common/dt_proc.h @@ -0,0 +1,118 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ + +/* + * Copyright 2007 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +#ifndef _DT_PROC_H +#define _DT_PROC_H + +#pragma ident "%Z%%M% %I% %E% SMI" + +#include <libproc.h> +#include <dtrace.h> +#include <pthread.h> +#include <dt_list.h> + +#ifdef __cplusplus +extern "C" { +#endif + +typedef struct dt_proc { + dt_list_t dpr_list; /* prev/next pointers for lru chain */ + struct dt_proc *dpr_hash; /* next pointer for pid hash chain */ + dtrace_hdl_t *dpr_hdl; /* back pointer to libdtrace handle */ + struct ps_prochandle *dpr_proc; /* proc handle for libproc calls */ + char dpr_errmsg[BUFSIZ]; /* error message */ +#if defined(sun) + rd_agent_t *dpr_rtld; /* rtld handle for librtld_db calls */ +#endif + pthread_mutex_t dpr_lock; /* lock for manipulating dpr_hdl */ + pthread_cond_t dpr_cv; /* cond for dpr_stop/quit/done */ + pid_t dpr_pid; /* pid of process */ + uint_t dpr_refs; /* reference count */ + uint8_t dpr_cacheable; /* cache handle using lru list */ + uint8_t dpr_stop; /* stop mask: see flag bits below */ + uint8_t dpr_quit; /* quit flag: ctl thread should quit */ + uint8_t dpr_done; /* done flag: ctl thread has exited */ + uint8_t dpr_usdt; /* usdt flag: usdt initialized */ + uint8_t dpr_stale; /* proc flag: been deprecated */ + uint8_t dpr_rdonly; /* proc flag: opened read-only */ + pthread_t dpr_tid; /* control thread (or zero if none) */ + dt_list_t dpr_bps; /* list of dt_bkpt_t structures */ +} dt_proc_t; + +typedef struct dt_proc_notify { + dt_proc_t *dprn_dpr; /* process associated with the event */ + char dprn_errmsg[BUFSIZ]; /* error message */ + struct dt_proc_notify *dprn_next; /* next pointer */ +} dt_proc_notify_t; + +#define DT_PROC_STOP_IDLE 0x01 /* idle on owner's stop request */ +#define DT_PROC_STOP_CREATE 0x02 /* wait on dpr_cv at process exec */ +#define DT_PROC_STOP_GRAB 0x04 /* wait on dpr_cv at process grab */ +#define DT_PROC_STOP_PREINIT 0x08 /* wait on dpr_cv at rtld preinit */ +#define DT_PROC_STOP_POSTINIT 0x10 /* wait on dpr_cv at rtld postinit */ +#define DT_PROC_STOP_MAIN 0x20 /* wait on dpr_cv at a.out`main() */ + +typedef void dt_bkpt_f(dtrace_hdl_t *, dt_proc_t *, void *); + +typedef struct dt_bkpt { + dt_list_t dbp_list; /* prev/next pointers for bkpt list */ + dt_bkpt_f *dbp_func; /* callback function to execute */ + void *dbp_data; /* callback function private data */ + uintptr_t dbp_addr; /* virtual address of breakpoint */ + ulong_t dbp_instr; /* saved instruction from breakpoint */ + ulong_t dbp_hits; /* count of breakpoint hits for debug */ + int dbp_active; /* flag indicating breakpoint is on */ +} dt_bkpt_t; + +typedef struct dt_proc_hash { + pthread_mutex_t dph_lock; /* lock protecting dph_notify list */ + pthread_cond_t dph_cv; /* cond for waiting for dph_notify */ + dt_proc_notify_t *dph_notify; /* list of pending proc notifications */ + dt_list_t dph_lrulist; /* list of dt_proc_t's in lru order */ + uint_t dph_lrulim; /* limit on number of procs to hold */ + uint_t dph_lrucnt; /* count of cached process handles */ + uint_t dph_hashlen; /* size of hash chains array */ + dt_proc_t *dph_hash[1]; /* hash chains array */ +} dt_proc_hash_t; + +extern struct ps_prochandle *dt_proc_create(dtrace_hdl_t *, + const char *, char *const *); + +extern struct ps_prochandle *dt_proc_grab(dtrace_hdl_t *, pid_t, int, int); +extern void dt_proc_release(dtrace_hdl_t *, struct ps_prochandle *); +extern void dt_proc_continue(dtrace_hdl_t *, struct ps_prochandle *); +extern void dt_proc_lock(dtrace_hdl_t *, struct ps_prochandle *); +extern void dt_proc_unlock(dtrace_hdl_t *, struct ps_prochandle *); +extern dt_proc_t *dt_proc_lookup(dtrace_hdl_t *, struct ps_prochandle *, int); + +extern void dt_proc_hash_create(dtrace_hdl_t *); +extern void dt_proc_hash_destroy(dtrace_hdl_t *); + +#ifdef __cplusplus +} +#endif + +#endif /* _DT_PROC_H */ |