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/*
* 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 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _LIBPCTX_H
#define _LIBPCTX_H
#include <sys/types.h>
#include <fcntl.h>
#include <stdarg.h>
/*
* The process context library allows callers to use the facilities
* of /proc to control processes in a simplified way by managing
* the process via an event loop. The controlling process expresses
* interest in various events which are handled as callbacks by the
* library.
*/
#ifdef __cplusplus
extern "C" {
#endif
typedef struct __pctx pctx_t;
/*
* A vprintf-like error handling routine can be passed in for use
* by more sophisticated callers. If specified as NULL, errors
* are written to stderr.
*/
typedef void (pctx_errfn_t)(const char *fn, const char *fmt, va_list ap);
extern pctx_t *pctx_create(const char *filename, char *const *argv,
void *arg, int verbose, pctx_errfn_t *errfn);
extern pctx_t *pctx_capture(pid_t pid,
void *arg, int verbose, pctx_errfn_t *errfn);
typedef int pctx_sysc_execfn_t(pctx_t *, pid_t, id_t, char *, void *);
typedef void pctx_sysc_forkfn_t(pctx_t *, pid_t, id_t, pid_t, void *);
typedef void pctx_sysc_exitfn_t(pctx_t *, pid_t, id_t, int, void *);
typedef int pctx_sysc_lwp_createfn_t(pctx_t *, pid_t, id_t, void *);
typedef int pctx_init_lwpfn_t(pctx_t *, pid_t, id_t, void *);
typedef int pctx_fini_lwpfn_t(pctx_t *, pid_t, id_t, void *);
typedef int pctx_sysc_lwp_exitfn_t(pctx_t *, pid_t, id_t, void *);
extern void pctx_terminate(pctx_t *);
typedef enum {
PCTX_NULL_EVENT = 0,
PCTX_SYSC_EXEC_EVENT,
PCTX_SYSC_FORK_EVENT,
PCTX_SYSC_EXIT_EVENT,
PCTX_SYSC_LWP_CREATE_EVENT,
PCTX_INIT_LWP_EVENT,
PCTX_FINI_LWP_EVENT,
PCTX_SYSC_LWP_EXIT_EVENT
} pctx_event_t;
extern int pctx_set_events(pctx_t *pctx, ...);
extern int pctx_run(pctx_t *pctx, uint_t msec, uint_t nsamples,
int (*tick)(pctx_t *, pid_t, id_t, void *));
extern void pctx_release(pctx_t *pctx);
/*
* Implementation-private interfaces used by libcpc.
*/
struct __cpc;
extern int __pctx_cpc(pctx_t *, struct __cpc *, int, id_t,
void *, void *, void *, int);
extern void __pctx_cpc_register_callback(void (*)(struct __cpc *,
struct __pctx *));
#ifdef __cplusplus
}
#endif
#endif /* _LIBPCTX_H */
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