1 /* $NetBSD: trace.c,v 1.21 2020/10/31 22:05:56 rillig Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Bill Sommerfeld 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * trace.c -- 34 * handle logging of trace events generated by various parts of make. 35 * 36 * Interface: 37 * Trace_Init Initialize tracing (called once during 38 * the lifetime of the process) 39 * 40 * Trace_End Finalize tracing (called before make exits) 41 * 42 * Trace_Log Log an event about a particular make job. 43 */ 44 45 #include <sys/time.h> 46 47 #include "make.h" 48 #include "job.h" 49 #include "trace.h" 50 51 MAKE_RCSID("$NetBSD: trace.c,v 1.21 2020/10/31 22:05:56 rillig Exp $"); 52 53 static FILE *trfile; 54 static pid_t trpid; 55 const char *trwd; 56 57 static const char *evname[] = { 58 "BEG", 59 "END", 60 "ERR", 61 "JOB", 62 "DON", 63 "INT", 64 }; 65 66 void 67 Trace_Init(const char *pathname) 68 { 69 if (pathname != NULL) { 70 void *dontFreeIt; 71 trpid = getpid(); 72 /* XXX: This variable may get overwritten later, which 73 * would make trwd point to undefined behavior. */ 74 trwd = Var_Value(".CURDIR", VAR_GLOBAL, &dontFreeIt); 75 76 trfile = fopen(pathname, "a"); 77 } 78 } 79 80 void 81 Trace_Log(TrEvent event, Job *job) 82 { 83 struct timeval rightnow; 84 85 if (trfile == NULL) 86 return; 87 88 gettimeofday(&rightnow, NULL); 89 90 fprintf(trfile, "%lld.%06ld %d %s %d %s", 91 (long long)rightnow.tv_sec, (long)rightnow.tv_usec, 92 jobTokensRunning, 93 evname[event], trpid, trwd); 94 if (job != NULL) { 95 fprintf(trfile, " %s %d %x %x", job->node->name, 96 job->pid, job->flags, job->node->type); 97 } 98 fputc('\n', trfile); 99 fflush(trfile); 100 } 101 102 void 103 Trace_End(void) 104 { 105 if (trfile != NULL) 106 fclose(trfile); 107 } 108