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trace.c revision 1.14 
      1 /*	$NetBSD: trace.c,v 1.14 2020/08/01 09:55:00 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 #ifndef MAKE_NATIVE
     34 static char rcsid[] = "$NetBSD: trace.c,v 1.14 2020/08/01 09:55:00 rillig Exp $";
     35 #else
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 __RCSID("$NetBSD: trace.c,v 1.14 2020/08/01 09:55:00 rillig Exp $");
     39 #endif /* not lint */
     40 #endif
     41 
     42 /*-
     43  * trace.c --
     44  *	handle logging of trace events generated by various parts of make.
     45  *
     46  * Interface:
     47  *	Trace_Init		Initialize tracing (called once during
     48  *				the lifetime of the process)
     49  *
     50  *	Trace_End		Finalize tracing (called before make exits)
     51  *
     52  *	Trace_Log		Log an event about a particular make job.
     53  */
     54 
     55 #include <sys/time.h>
     56 
     57 #include <stdio.h>
     58 #include <unistd.h>
     59 
     60 #include "make.h"
     61 #include "job.h"
     62 #include "trace.h"
     63 
     64 static FILE *trfile;
     65 static pid_t trpid;
     66 const char *trwd;
     67 
     68 static const char *evname[] = {
     69 	"BEG",
     70 	"END",
     71 	"ERR",
     72 	"JOB",
     73 	"DON",
     74 	"INT",
     75 };
     76 
     77 void
     78 Trace_Init(const char *pathname)
     79 {
     80 	if (pathname != NULL) {
     81 		trpid = getpid();
     82 		char *dontFreeIt;
     83 		trwd = Var_Value(".CURDIR", VAR_GLOBAL, &dontFreeIt);
     84 
     85 		trfile = fopen(pathname, "a");
     86 	}
     87 }
     88 
     89 void
     90 Trace_Log(TrEvent event, Job *job)
     91 {
     92 	struct timeval rightnow;
     93 
     94 	if (trfile == NULL)
     95 		return;
     96 
     97 	gettimeofday(&rightnow, NULL);
     98 
     99 	fprintf(trfile, "%lld.%06ld %d %s %d %s",
    100 	    (long long)rightnow.tv_sec, (long)rightnow.tv_usec,
    101 	    jobTokensRunning,
    102 	    evname[event], trpid, trwd);
    103 	if (job != NULL) {
    104 		fprintf(trfile, " %s %d %x %x", job->node->name,
    105 		    job->pid, job->flags, job->node->type);
    106 	}
    107 	fputc('\n', trfile);
    108 	fflush(trfile);
    109 }
    110 
    111 void
    112 Trace_End(void)
    113 {
    114 	if (trfile != NULL)
    115 		fclose(trfile);
    116 }
    117