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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _LIBPCTX_H 27 #define _LIBPCTX_H 28 29 #include <sys/types.h> 30 #include <fcntl.h> 31 #include <stdarg.h> 32 33 /* 34 * The process context library allows callers to use the facilities 35 * of /proc to control processes in a simplified way by managing 36 * the process via an event loop. The controlling process expresses 37 * interest in various events which are handled as callbacks by the 38 * library. 39 */ 40 41 #ifdef __cplusplus 42 extern "C" { 43 #endif 44 45 typedef struct __pctx pctx_t; 46 47 /* 48 * A vprintf-like error handling routine can be passed in for use 49 * by more sophisticated callers. If specified as NULL, errors 50 * are written to stderr. 51 */ 52 typedef void (pctx_errfn_t)(const char *fn, const char *fmt, va_list ap); 53 54 extern pctx_t *pctx_create(const char *filename, char *const *argv, 55 void *arg, int verbose, pctx_errfn_t *errfn); 56 extern pctx_t *pctx_capture(pid_t pid, 57 void *arg, int verbose, pctx_errfn_t *errfn); 58 59 typedef int pctx_sysc_execfn_t(pctx_t *, pid_t, id_t, char *, void *); 60 typedef void pctx_sysc_forkfn_t(pctx_t *, pid_t, id_t, pid_t, void *); 61 typedef void pctx_sysc_exitfn_t(pctx_t *, pid_t, id_t, int, void *); 62 typedef int pctx_sysc_lwp_createfn_t(pctx_t *, pid_t, id_t, void *); 63 typedef int pctx_init_lwpfn_t(pctx_t *, pid_t, id_t, void *); 64 typedef int pctx_fini_lwpfn_t(pctx_t *, pid_t, id_t, void *); 65 typedef int pctx_sysc_lwp_exitfn_t(pctx_t *, pid_t, id_t, void *); 66 67 extern void pctx_terminate(pctx_t *); 68 69 typedef enum { 70 PCTX_NULL_EVENT = 0, 71 PCTX_SYSC_EXEC_EVENT, 72 PCTX_SYSC_FORK_EVENT, 73 PCTX_SYSC_EXIT_EVENT, 74 PCTX_SYSC_LWP_CREATE_EVENT, 75 PCTX_INIT_LWP_EVENT, 76 PCTX_FINI_LWP_EVENT, 77 PCTX_SYSC_LWP_EXIT_EVENT 78 } pctx_event_t; 79 80 extern int pctx_set_events(pctx_t *pctx, ...); 81 82 extern int pctx_run(pctx_t *pctx, uint_t msec, uint_t nsamples, 83 int (*tick)(pctx_t *, pid_t, id_t, void *)); 84 85 extern void pctx_release(pctx_t *pctx); 86 87 /* 88 * Implementation-private interfaces used by libcpc. 89 */ 90 struct __cpc; 91 extern int __pctx_cpc(pctx_t *, struct __cpc *, int, id_t, 92 void *, void *, void *, int); 93 extern void __pctx_cpc_register_callback(void (*)(struct __cpc *, 94 struct __pctx *)); 95 96 #ifdef __cplusplus 97 } 98 #endif 99 100 #endif /* _LIBPCTX_H */ 101