1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2003-2008, Joseph Koshy 5 * Copyright (c) 2007 The FreeBSD Foundation 6 * All rights reserved. 7 * Copyright (c) 2018, Matthew Macy 8 * 9 * Portions of this software were developed by A. Joseph Koshy under 10 * sponsorship from the FreeBSD Foundation and Google, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 #include <sys/param.h> 36 #include <sys/cpuset.h> 37 #include <sys/event.h> 38 #include <sys/queue.h> 39 #include <sys/socket.h> 40 #include <sys/stat.h> 41 #include <sys/sysctl.h> 42 #include <sys/time.h> 43 #include <sys/ttycom.h> 44 #include <sys/user.h> 45 #include <sys/wait.h> 46 47 #include <assert.h> 48 #include <curses.h> 49 #include <err.h> 50 #include <errno.h> 51 #include <fcntl.h> 52 #include <getopt.h> 53 #include <kvm.h> 54 #include <libgen.h> 55 #include <limits.h> 56 #include <locale.h> 57 #include <math.h> 58 #include <pmc.h> 59 #include <pmclog.h> 60 #include <regex.h> 61 #include <signal.h> 62 #include <stdarg.h> 63 #include <stdint.h> 64 #include <stdio.h> 65 #include <stdlib.h> 66 #include <string.h> 67 #include <sysexits.h> 68 #include <unistd.h> 69 70 #include <libpmcstat.h> 71 #include "cmd_pmc.h" 72 73 static struct pmcstat_stats pmcstat_stats; /* statistics */ 74 75 static struct pmc_plugins plugins[] = { 76 { 77 .pl_name = "none", 78 }, 79 { 80 .pl_name = NULL 81 } 82 }; 83 84 int 85 pmc_util_get_pid(struct pmcstat_args *args) 86 { 87 struct pmcstat_target *pt; 88 89 assert(args->pa_flags & FLAG_HAS_COMMANDLINE); 90 91 /* 92 * If a command line was specified, it would be the very first 93 * in the list, before any other processes specified by -t. 94 */ 95 pt = SLIST_FIRST(&args->pa_targets); 96 return (pt->pt_pid); 97 } 98 99 void 100 pmc_util_kill_process(struct pmcstat_args *args) 101 { 102 struct pmcstat_target *pt; 103 104 assert(args->pa_flags & FLAG_HAS_COMMANDLINE); 105 106 /* 107 * If a command line was specified, it would be the very first 108 * in the list, before any other processes specified by -t. 109 */ 110 pt = SLIST_FIRST(&args->pa_targets); 111 assert(pt != NULL); 112 113 if (kill(pt->pt_pid, SIGINT) != 0) 114 err(EX_OSERR, "ERROR: cannot signal child process"); 115 } 116 117 void 118 pmc_util_shutdown_logging(struct pmcstat_args *args) 119 { 120 pmcstat_shutdown_logging(args, plugins, &pmcstat_stats); 121 } 122 123 void 124 pmc_util_cleanup(struct pmcstat_args *args) 125 { 126 struct pmcstat_ev *ev; 127 128 /* release allocated PMCs. */ 129 STAILQ_FOREACH(ev, &args->pa_events, ev_next) 130 if (ev->ev_pmcid != PMC_ID_INVALID) { 131 if (pmc_stop(ev->ev_pmcid) < 0) 132 err(EX_OSERR, 133 "ERROR: cannot stop pmc 0x%x \"%s\"", 134 ev->ev_pmcid, ev->ev_name); 135 if (pmc_release(ev->ev_pmcid) < 0) 136 err(EX_OSERR, 137 "ERROR: cannot release pmc 0x%x \"%s\"", 138 ev->ev_pmcid, ev->ev_name); 139 } 140 /* de-configure the log file if present. */ 141 if (args->pa_flags & (FLAG_HAS_PIPE | FLAG_HAS_OUTPUT_LOGFILE)) 142 (void)pmc_configure_logfile(-1); 143 144 if (args->pa_logparser) { 145 pmclog_close(args->pa_logparser); 146 args->pa_logparser = NULL; 147 } 148 pmc_util_shutdown_logging(args); 149 } 150 151 void 152 pmc_util_start_pmcs(struct pmcstat_args *args) 153 { 154 struct pmcstat_ev *ev; 155 156 STAILQ_FOREACH(ev, &args->pa_events, ev_next) { 157 158 assert(ev->ev_pmcid != PMC_ID_INVALID); 159 160 if (pmc_start(ev->ev_pmcid) < 0) { 161 warn("ERROR: Cannot start pmc 0x%x \"%s\"", 162 ev->ev_pmcid, ev->ev_name); 163 pmc_util_cleanup(args); 164 exit(EX_OSERR); 165 } 166 } 167 } 168