base/test/perf_log.cc

   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/logging.h"
   9
  10 namespace base {
  11
  12 static FILE* perf_log_file = NULL;
  13
  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 != NULL;
  23 }
  24
  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
  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