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 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _LIBPCTX_H 28 #define _LIBPCTX_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/types.h> 33 #include <fcntl.h> 34 #include <stdarg.h> 35 36 /* 37 * The process context library allows callers to use the facilities 38 * of /proc to control processes in a simplified way by managing 39 * the process via an event loop. The controlling process expresses 40 * interest in various events which are handled as callbacks by the 41 * library. 42 */ 43 44 #ifdef __cplusplus 45 extern "C" { 46 #endif 47 48 typedef struct __pctx pctx_t; 49 50 /* 51 * A vprintf-like error handling routine can be passed in for use 52 * by more sophisticated callers. If specified as NULL, errors 53 * are written to stderr. 54 */ 55 typedef void (pctx_errfn_t)(const char *fn, const char *fmt, va_list ap); 56 57 extern pctx_t *pctx_create(const char *filename, char *const *argv, 58 void *arg, int verbose, pctx_errfn_t *errfn); 59 extern pctx_t *pctx_capture(pid_t pid, 60 void *arg, int verbose, pctx_errfn_t *errfn); 61 62 typedef int pctx_sysc_execfn_t(pctx_t *, pid_t, id_t, char *, void *); 63 typedef void pctx_sysc_forkfn_t(pctx_t *, pid_t, id_t, pid_t, void *); 64 typedef void pctx_sysc_exitfn_t(pctx_t *, pid_t, id_t, int, void *); 65 typedef int pctx_sysc_lwp_createfn_t(pctx_t *, pid_t, id_t, void *); 66 typedef int pctx_init_lwpfn_t(pctx_t *, pid_t, id_t, void *); 67 typedef int pctx_fini_lwpfn_t(pctx_t *, pid_t, id_t, void *); 68 typedef int pctx_sysc_lwp_exitfn_t(pctx_t *, pid_t, id_t, void *); 69 70 typedef enum { 71 PCTX_NULL_EVENT = 0, 72 PCTX_SYSC_EXEC_EVENT, 73 PCTX_SYSC_FORK_EVENT, 74 PCTX_SYSC_EXIT_EVENT, 75 PCTX_SYSC_LWP_CREATE_EVENT, 76 PCTX_INIT_LWP_EVENT, 77 PCTX_FINI_LWP_EVENT, 78 PCTX_SYSC_LWP_EXIT_EVENT 79 } pctx_event_t; 80 81 extern int pctx_set_events(pctx_t *pctx, ...); 82 83 extern int pctx_run(pctx_t *pctx, uint_t msec, uint_t nsamples, 84 int (*tick)(pctx_t *, pid_t, id_t, void *)); 85 86 extern void pctx_release(pctx_t *pctx); 87 88 /* 89 * Implementation-private interfaces used by libcpc. 90 */ 91 struct __cpc; 92 extern int __pctx_cpc(pctx_t *, struct __cpc *, int, id_t, 93 void *, void *, void *, int); 94 extern void __pctx_cpc_register_callback(void (*)(struct __cpc *, 95 struct __pctx *)); 96 97 #ifdef __cplusplus 98 } 99 #endif 100 101 #endif /* _LIBPCTX_H */ 102