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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/library_loader.h" | |
6 | |
7 #include <dlfcn.h> | |
8 | |
9 #include "base/compiler_specific.h" | |
10 #include "base/file_path.h" | |
11 #include "base/logging.h" | |
12 #include "base/metrics/histogram.h" | |
13 #include "base/path_service.h" | |
14 #include "chrome/common/chrome_paths.h" | |
15 #include "third_party/cros/chromeos_cros_api.h" | |
16 | |
17 namespace chromeos { | |
18 | |
19 namespace { | |
20 | |
21 void AddLibcrosTimeHistogram(const char* name, const base::TimeDelta& delta) { | |
22 static const base::TimeDelta min_time = base::TimeDelta::FromMilliseconds(1); | |
23 static const base::TimeDelta max_time = base::TimeDelta::FromSeconds(1); | |
24 const size_t bucket_count(10); | |
25 DCHECK(name); | |
26 base::Histogram* counter = base::Histogram::FactoryTimeGet( | |
27 std::string(name), | |
28 min_time, | |
29 max_time, | |
30 bucket_count, | |
31 base::Histogram::kNoFlags); | |
32 counter->AddTime(delta); | |
33 VLOG(1) << "Cros Time: " << name << ": " << delta.InMilliseconds() << "ms."; | |
34 } | |
35 | |
36 } // namespace | |
37 | |
38 class LibraryLoaderImpl : public LibraryLoader { | |
39 public: | |
40 LibraryLoaderImpl(); | |
41 | |
42 // LibraryLoader: | |
43 virtual bool Load(std::string* load_error_string) OVERRIDE; | |
44 }; | |
45 | |
46 LibraryLoaderImpl::LibraryLoaderImpl() {} | |
47 | |
48 bool LibraryLoaderImpl::Load(std::string* load_error_string) { | |
49 bool loaded = false; | |
50 FilePath path; | |
51 if (PathService::Get(chrome::FILE_CHROMEOS_API, &path)) { | |
52 loaded = LoadLibcros(path.value().c_str(), *load_error_string); | |
53 if (loaded) | |
54 SetLibcrosTimeHistogramFunction(AddLibcrosTimeHistogram); | |
55 } | |
56 | |
57 if (!loaded) { | |
58 LOG(ERROR) << "Problem loading chromeos shared object: " | |
59 << *load_error_string; | |
60 } | |
61 return loaded; | |
62 } | |
63 | |
64 // static | |
65 LibraryLoader* LibraryLoader::GetImpl() { | |
66 return new LibraryLoaderImpl(); | |
67 } | |
68 | |
69 } // namespace chromeos | |
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