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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "chrome/installer/setup/installer_metrics.h" | 5 #include "chrome/installer/setup/installer_metrics.h" |
6 | 6 |
7 #include "base/files/file.h" | 7 #include "base/files/file.h" |
8 #include "base/files/file_path.h" | 8 #include "base/files/file_path.h" |
9 #include "base/files/file_util.h" | 9 #include "base/files/file_util.h" |
10 #include "base/metrics/histogram_base.h" | 10 #include "base/metrics/histogram_base.h" |
11 #include "base/metrics/histogram_persistence.h" | 11 #include "base/metrics/persistent_histogram_allocator.h" |
12 #include "base/metrics/persistent_memory_allocator.h" | 12 #include "base/metrics/persistent_memory_allocator.h" |
13 #include "chrome/installer/util/util_constants.h" | 13 #include "chrome/installer/util/util_constants.h" |
14 | 14 |
15 namespace installer { | 15 namespace installer { |
16 | 16 |
17 void BeginPersistentHistogramStorage() { | 17 void BeginPersistentHistogramStorage() { |
18 base::SetPersistentHistogramMemoryAllocator( | 18 base::PersistentHistogramAllocator::SetGlobalAllocator( |
19 new base::LocalPersistentMemoryAllocator( | 19 make_scoped_ptr(new base::PersistentHistogramAllocator( |
20 1 << 20, 0, // 1 MiB | 20 make_scoped_ptr(new base::LocalPersistentMemoryAllocator( |
21 installer::kSetupHistogramAllocatorName)); | 21 1 << 20, 0, // 1 MiB |
22 base::GetPersistentHistogramMemoryAllocator()->CreateTrackingHistograms( | 22 installer::kSetupHistogramAllocatorName))))); |
23 installer::kSetupHistogramAllocatorName); | 23 base::PersistentHistogramAllocator::GetGlobalAllocator() |
| 24 ->CreateTrackingHistograms(installer::kSetupHistogramAllocatorName); |
24 } | 25 } |
25 | 26 |
26 void EndPersistentHistogramStorage(const base::FilePath& target_path) { | 27 void EndPersistentHistogramStorage(const base::FilePath& target_path) { |
| 28 base::PersistentHistogramAllocator::GetGlobalAllocator() |
| 29 ->UpdateTrackingHistograms(); |
| 30 base::PersistentMemoryAllocator* allocator = |
| 31 base::PersistentHistogramAllocator::GetGlobalAllocator() |
| 32 ->memory_allocator(); |
| 33 |
27 // For atomicity, first write to a temporary file and then rename it. | 34 // For atomicity, first write to a temporary file and then rename it. |
28 // The ImportantFileWriter would be good for this except it supports only | 35 // The ImportantFileWriter would be good for this except it supports only |
29 // std::string for its data. | 36 // std::string for its data. |
30 base::PersistentMemoryAllocator* allocator = | |
31 base::GetPersistentHistogramMemoryAllocator(); | |
32 allocator->UpdateTrackingHistograms(); | |
33 | |
34 base::FilePath file_path = target_path | 37 base::FilePath file_path = target_path |
35 .AppendASCII(allocator->Name()) | 38 .AppendASCII(allocator->Name()) |
36 .AddExtension(L".pma"); | 39 .AddExtension(L".pma"); |
37 base::FilePath tmp_file_path; | 40 base::FilePath tmp_file_path; |
38 base::DeleteFile(file_path, false); | 41 base::DeleteFile(file_path, false); |
39 | 42 |
40 if (base::CreateTemporaryFileInDir(file_path.DirName(), &tmp_file_path)) { | 43 if (base::CreateTemporaryFileInDir(file_path.DirName(), &tmp_file_path)) { |
41 // Allocator doesn't support more than 1GB so can never overflow. | 44 // Allocator doesn't support more than 1GB so can never overflow. |
42 int used = static_cast<int>(allocator->used()); | 45 int used = static_cast<int>(allocator->used()); |
43 if (base::WriteFile(tmp_file_path, | 46 if (base::WriteFile(tmp_file_path, |
44 static_cast<const char*>(allocator->data()), | 47 static_cast<const char*>(allocator->data()), |
45 used) == used) { | 48 used) == used) { |
46 if (base::ReplaceFile(tmp_file_path, file_path, nullptr)) { | 49 if (base::ReplaceFile(tmp_file_path, file_path, nullptr)) { |
47 VLOG(1) << "Persistent histograms saved in file: " | 50 VLOG(1) << "Persistent histograms saved in file: " |
48 << file_path.value(); | 51 << file_path.value(); |
49 } | 52 } |
50 } | 53 } |
51 base::DeleteFile(tmp_file_path, false); | 54 base::DeleteFile(tmp_file_path, false); |
52 } | 55 } |
53 } | 56 } |
54 | 57 |
55 } // namespace installer | 58 } // namespace installer |
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