Preparing components_perftests

base/test/perf_log.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/test/perf_log.h"
 
+#include "base/command_line.h"
+#include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/logging.h"
+#include "base/path_service.h"
+#include "build/build_config.h"
 
 namespace base {
 
 static FILE* perf_log_file = NULL;
 
-bool InitPerfLog(const FilePath& log_file) {
+bool InitPerfLog() {
   if (perf_log_file) {
     // trying to initialize twice
     NOTREACHED();
     return false;
   }
 
-  perf_log_file = OpenFile(log_file, "w");
+  FilePath log_path =
+      CommandLine::ForCurrentProcess()->GetSwitchValuePath("log-file");
+  if (log_path.empty()) {
+    PathService::Get(FILE_EXE, &log_path);
+#if defined(OS_ANDROID)
+    base::FilePath tmp_dir;
+    PathService::Get(base::DIR_CACHE, &tmp_dir);
+    log_path = tmp_dir.Append(log_path.BaseName());
+#endif
+    log_path = log_path.ReplaceExtension(FILE_PATH_LITERAL("log"));
+    log_path = log_path.InsertBeforeExtension(FILE_PATH_LITERAL("_perf"));
+  }
+
+  perf_log_file = OpenFile(log_path, "w");
   return perf_log_file != NULL;
 }
 
 void FinalizePerfLog() {
   if (!perf_log_file) {
     // trying to cleanup without initializing
     NOTREACHED();
     return;
   }
   base::CloseFile(perf_log_file);
 }
 
 void LogPerfResult(const char* test_name, double value, const char* units) {
   if (!perf_log_file) {
     NOTREACHED();
     return;
   }
 
   fprintf(perf_log_file, "%s\t%g\t%s\n", test_name, value, units);
   printf("%s\t%g\t%s\n", test_name, value, units);
   fflush(stdout);
 }
 
 }  // namespace base