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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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 "base/trace_event/process_memory_totals_dump_provider.h" | 5 #include "base/trace_event/process_memory_totals_dump_provider.h" |
6 | 6 |
7 #include "base/process/process_metrics.h" | 7 #include "base/process/process_metrics.h" |
8 #include "base/trace_event/process_memory_dump.h" | 8 #include "base/trace_event/process_memory_dump.h" |
9 #include "base/trace_event/process_memory_totals.h" | 9 #include "base/trace_event/process_memory_totals.h" |
10 | 10 |
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27 | 27 |
28 namespace { | 28 namespace { |
29 | 29 |
30 ProcessMetrics* CreateProcessMetricsForCurrentProcess() { | 30 ProcessMetrics* CreateProcessMetricsForCurrentProcess() { |
31 #if !defined(OS_MACOSX) || defined(OS_IOS) | 31 #if !defined(OS_MACOSX) || defined(OS_IOS) |
32 return ProcessMetrics::CreateProcessMetrics(GetCurrentProcessHandle()); | 32 return ProcessMetrics::CreateProcessMetrics(GetCurrentProcessHandle()); |
33 #else | 33 #else |
34 return ProcessMetrics::CreateProcessMetrics(GetCurrentProcessHandle(), NULL); | 34 return ProcessMetrics::CreateProcessMetrics(GetCurrentProcessHandle(), NULL); |
35 #endif | 35 #endif |
36 } | 36 } |
| 37 |
| 38 bool ReadStatusFile(int status_fd, std::string* data) { |
| 39 if (lseek(status_fd, 0, SEEK_SET) < 0) |
| 40 return false; |
| 41 char buffer[4096]; |
| 42 buffer[0] = '\0'; |
| 43 ReadFromFD(status_fd, buffer, sizeof(buffer)); |
| 44 if (strlen(buffer) == 0) |
| 45 return false; |
| 46 data->clear(); |
| 47 data->append(buffer); |
| 48 return true; |
| 49 } |
| 50 |
37 } // namespace | 51 } // namespace |
38 | 52 |
39 // static | 53 // static |
40 ProcessMemoryTotalsDumpProvider* | 54 ProcessMemoryTotalsDumpProvider* |
41 ProcessMemoryTotalsDumpProvider::GetInstance() { | 55 ProcessMemoryTotalsDumpProvider::GetInstance() { |
42 return Singleton< | 56 return Singleton< |
43 ProcessMemoryTotalsDumpProvider, | 57 ProcessMemoryTotalsDumpProvider, |
44 LeakySingletonTraits<ProcessMemoryTotalsDumpProvider>>::get(); | 58 LeakySingletonTraits<ProcessMemoryTotalsDumpProvider>>::get(); |
45 } | 59 } |
46 | 60 |
47 ProcessMemoryTotalsDumpProvider::ProcessMemoryTotalsDumpProvider() | 61 ProcessMemoryTotalsDumpProvider::ProcessMemoryTotalsDumpProvider() |
48 : process_metrics_(CreateProcessMetricsForCurrentProcess()) { | 62 : process_metrics_(CreateProcessMetricsForCurrentProcess()) {} |
49 } | |
50 | 63 |
51 ProcessMemoryTotalsDumpProvider::~ProcessMemoryTotalsDumpProvider() { | 64 ProcessMemoryTotalsDumpProvider::~ProcessMemoryTotalsDumpProvider() {} |
52 } | |
53 | 65 |
54 // Called at trace dump point time. Creates a snapshot the memory counters for | 66 // Called at trace dump point time. Creates a snapshot the memory counters for |
55 // the current process. | 67 // the current process. |
56 bool ProcessMemoryTotalsDumpProvider::OnMemoryDump(const MemoryDumpArgs& args, | 68 bool ProcessMemoryTotalsDumpProvider::OnMemoryDump(const MemoryDumpArgs& args, |
57 ProcessMemoryDump* pmd) { | 69 ProcessMemoryDump* pmd) { |
58 const uint64 rss_bytes = rss_bytes_for_testing | 70 uint64 rss_bytes = 0; |
59 ? rss_bytes_for_testing | 71 uint64 peak_rss_bytes = 0; |
60 : process_metrics_->GetWorkingSetSize(); | 72 std::string status_contents; |
61 | 73 |
62 uint64 peak_rss_bytes = 0; | 74 if (UNLIKELY(rss_bytes_for_testing)) { |
| 75 rss_bytes = rss_bytes_for_testing; |
| 76 #if defined(OS_LINUX) |
| 77 } else if (proc_status_fd_.is_valid() && |
| 78 ReadStatusFile(proc_status_fd_.get(), &status_contents)) { |
| 79 int res = ParseProcStatusAndGetField(status_contents, "VmRSS", &rss_bytes); |
| 80 DCHECK(res); |
| 81 res = ParseProcStatusAndGetField(status_contents, "VmHWM", &peak_rss_bytes); |
| 82 DCHECK(res); |
| 83 #endif |
| 84 } else { |
| 85 rss_bytes = process_metrics_->GetWorkingSetSize(); |
| 86 #if !defined(OS_IOS) |
| 87 peak_rss_bytes = process_metrics_->GetPeakWorkingSetSize(); |
| 88 #endif |
| 89 } |
63 | 90 |
64 #if !defined(OS_IOS) | |
65 peak_rss_bytes = process_metrics_->GetPeakWorkingSetSize(); | |
66 #if defined(OS_LINUX) || defined(OS_ANDROID) | 91 #if defined(OS_LINUX) || defined(OS_ANDROID) |
67 if (kernel_supports_rss_peak_reset) { | 92 if (kernel_supports_rss_peak_reset) { |
68 // TODO(ssid): Fix crbug.com/461788 to write to the file from sandboxed | |
69 // processes. | |
70 int clear_refs_fd = open("/proc/self/clear_refs", O_WRONLY); | 93 int clear_refs_fd = open("/proc/self/clear_refs", O_WRONLY); |
71 if (clear_refs_fd > 0 && | 94 if (clear_refs_fd > 0 && |
72 WriteFileDescriptor(clear_refs_fd, kClearPeakRssCommand, | 95 WriteFileDescriptor(clear_refs_fd, kClearPeakRssCommand, |
73 sizeof(kClearPeakRssCommand))) { | 96 sizeof(kClearPeakRssCommand))) { |
74 pmd->process_totals()->set_is_peak_rss_resetable(true); | 97 pmd->process_totals()->set_is_peak_rss_resetable(true); |
| 98 close(clear_refs_fd); |
75 } else { | 99 } else { |
76 kernel_supports_rss_peak_reset = false; | 100 kernel_supports_rss_peak_reset = false; |
77 } | 101 } |
78 close(clear_refs_fd); | |
79 } | 102 } |
80 #endif // defined(OS_LINUX) || defined(OS_ANDROID) | 103 #endif // defined(OS_LINUX) || defined(OS_ANDROID) |
81 #endif // !defined(OS_IOS) | |
82 | 104 |
83 if (rss_bytes > 0) { | 105 if (rss_bytes > 0) { |
84 pmd->process_totals()->set_resident_set_bytes(rss_bytes); | 106 pmd->process_totals()->set_resident_set_bytes(rss_bytes); |
85 pmd->process_totals()->set_peak_resident_set_bytes(peak_rss_bytes); | 107 pmd->process_totals()->set_peak_resident_set_bytes(peak_rss_bytes); |
86 pmd->set_has_process_totals(); | 108 pmd->set_has_process_totals(); |
87 return true; | 109 return true; |
88 } | 110 } |
89 | 111 |
90 return false; | 112 return false; |
91 } | 113 } |
92 | 114 |
93 } // namespace trace_event | 115 } // namespace trace_event |
94 } // namespace base | 116 } // namespace base |
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