1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "base/test/perf_log.h"
6
7 #include "base/files/file_util.h"
8 #include "base/notreached.h"
9
10 namespace base {
11
12 static FILE* perf_log_file = nullptr;
13
InitPerfLog(const FilePath & log_file)14 bool InitPerfLog(const FilePath& log_file) {
15 if (perf_log_file) {
16 // trying to initialize twice
17 NOTREACHED();
18 return false;
19 }
20
21 perf_log_file = OpenFile(log_file, "w");
22 return perf_log_file != nullptr;
23 }
24
FinalizePerfLog()25 void FinalizePerfLog() {
26 if (!perf_log_file) {
27 // trying to cleanup without initializing
28 NOTREACHED();
29 return;
30 }
31 base::CloseFile(perf_log_file);
32 }
33
LogPerfResult(const char * test_name,double value,const char * units)34 void LogPerfResult(const char* test_name, double value, const char* units) {
35 if (!perf_log_file) {
36 NOTREACHED();
37 return;
38 }
39
40 fprintf(perf_log_file, "%s\t%g\t%s\n", test_name, value, units);
41 printf("%s\t%g\t%s\n", test_name, value, units);
42 fflush(stdout);
43 }
44
45 } // namespace base
46