1 /* $NetBSD: trace.c,v 1.33 2023/03/28 14:39:31 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 1.33 2023/03/28 14:39:31 rillig Exp $");
52
53 static FILE *trfile;
54 static pid_t trpid;
55 static const char *trwd;
56
57 static const char evname[][4] = {
58 "BEG",
59 "END",
60 "ERR",
61 "JOB",
62 "DON",
63 "INT",
64 };
65
66 void
Trace_Init(const char * pathname)67 Trace_Init(const char *pathname)
68 {
69 if (pathname != NULL) {
70 FStr curDir;
71 trpid = getpid();
72 /*
73 * XXX: This variable may get overwritten later, which would
74 * make trwd point to undefined behavior.
75 */
76 curDir = Var_Value(SCOPE_GLOBAL, ".CURDIR");
77 trwd = curDir.str;
78
79 trfile = fopen(pathname, "a");
80 }
81 }
82
83 void
Trace_Log(TrEvent event,Job * job)84 Trace_Log(TrEvent event, Job *job)
85 {
86 struct timeval rightnow;
87
88 if (trfile == NULL)
89 return;
90
91 gettimeofday(&rightnow, NULL);
92
93 #if __STDC_VERSION__ >= 199901L
94 fprintf(trfile, "%lld.%06ld %d %s %d %s",
95 (long long)rightnow.tv_sec, (long)rightnow.tv_usec,
96 jobTokensRunning,
97 evname[event], trpid, trwd);
98 #else
99 fprintf(trfile, "%ld.%06ld %d %s %d %s",
100 (long)rightnow.tv_sec, (long)rightnow.tv_usec,
101 jobTokensRunning,
102 evname[event], trpid, trwd);
103 #endif
104 if (job != NULL) {
105 char flags[4];
106
107 Job_FlagsToString(job, flags, sizeof flags);
108 fprintf(trfile, " %s %d %s %x", job->node->name,
109 job->pid, flags, job->node->type);
110 }
111 fputc('\n', trfile);
112 fflush(trfile);
113 }
114
115 void
Trace_End(void)116 Trace_End(void)
117 {
118 if (trfile != NULL)
119 fclose(trfile);
120 }
121