1 // Copyright (c) 2011 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 "chrome/browser/chromeos/cros/cros_library_loader.h" 6 7 #include <dlfcn.h> 8 9 #include "base/file_path.h" 10 #include "base/metrics/histogram.h" 11 #include "base/logging.h" 12 #include "base/path_service.h" 13 #include "chrome/common/chrome_paths.h" 14 #include "third_party/cros/chromeos_cros_api.h" 15 16 namespace chromeos { 17 18 namespace { 19 20 void addLibcrosTimeHistogram(const char* name, const base::TimeDelta& delta) { 21 static const base::TimeDelta min_time = base::TimeDelta::FromMilliseconds(1); 22 static const base::TimeDelta max_time = base::TimeDelta::FromSeconds(1); 23 const size_t bucket_count(10); 24 DCHECK(name); 25 base::Histogram* counter = base::Histogram::FactoryTimeGet( 26 std::string(name), 27 min_time, 28 max_time, 29 bucket_count, 30 base::Histogram::kNoFlags); 31 counter->AddTime(delta); 32 VLOG(1) << "Cros Time: " << name << ": " << delta.InMilliseconds() << "ms."; 33 } 34 35 } // namespace 36 37 bool CrosLibraryLoader::Load(std::string* load_error_string) { 38 bool loaded = false; 39 FilePath path; 40 if (PathService::Get(chrome::FILE_CHROMEOS_API, &path)) { 41 loaded = LoadLibcros(path.value().c_str(), *load_error_string); 42 if (loaded) 43 SetLibcrosTimeHistogramFunction(addLibcrosTimeHistogram); 44 } 45 46 if (!loaded) { 47 LOG(ERROR) << "Problem loading chromeos shared object: " 48 << *load_error_string; 49 } 50 return loaded; 51 } 52 53 } // namespace chromeos 54
