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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_maps_dump_provider.h" | 5 #include "base/trace_event/process_memory_maps_dump_provider.h" |
6 | 6 |
| 7 #include "base/files/scoped_file.h" |
7 #include "base/format_macros.h" | 8 #include "base/format_macros.h" |
8 #include "base/logging.h" | 9 #include "base/logging.h" |
9 #include "base/strings/string_util.h" | 10 #include "base/strings/string_util.h" |
10 #include "base/trace_event/process_memory_dump.h" | 11 #include "base/trace_event/process_memory_dump.h" |
11 #include "base/trace_event/process_memory_maps.h" | 12 #include "base/trace_event/process_memory_maps.h" |
12 | 13 |
13 namespace base { | 14 namespace base { |
14 namespace trace_event { | 15 namespace trace_event { |
15 | 16 |
16 #if defined(OS_LINUX) || defined(OS_ANDROID) | |
17 // static | 17 // static |
18 FILE* ProcessMemoryMapsDumpProvider::proc_smaps_for_testing = nullptr; | 18 FILE* ProcessMemoryMapsDumpProvider::proc_smaps_for_testing = nullptr; |
19 | 19 |
20 namespace { | 20 namespace { |
21 | 21 |
22 const uint32 kMaxLineSize = 4096; | 22 const uint32 kMaxLineSize = 4096; |
23 | 23 |
24 bool ParseSmapsHeader(const char* header_line, | 24 bool ParseSmapsHeader(const char* header_line, |
25 ProcessMemoryMaps::VMRegion* region) { | 25 ProcessMemoryMaps::VMRegion* region) { |
26 // e.g., "00400000-00421000 r-xp 00000000 fc:01 1234 /foo.so\n" | 26 // e.g., "00400000-00421000 r-xp 00000000 fc:01 1234 /foo.so\n" |
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127 ++num_valid_regions; | 127 ++num_valid_regions; |
128 should_add_current_region = false; | 128 should_add_current_region = false; |
129 } | 129 } |
130 } | 130 } |
131 } | 131 } |
132 } | 132 } |
133 return num_valid_regions; | 133 return num_valid_regions; |
134 } | 134 } |
135 | 135 |
136 } // namespace | 136 } // namespace |
137 #endif // defined(OS_LINUX) || defined(OS_ANDROID) | |
138 | 137 |
139 // static | 138 // static |
140 ProcessMemoryMapsDumpProvider* ProcessMemoryMapsDumpProvider::GetInstance() { | 139 ProcessMemoryMapsDumpProvider* ProcessMemoryMapsDumpProvider::GetInstance() { |
141 return Singleton<ProcessMemoryMapsDumpProvider, | 140 return Singleton<ProcessMemoryMapsDumpProvider, |
142 LeakySingletonTraits<ProcessMemoryMapsDumpProvider>>::get(); | 141 LeakySingletonTraits<ProcessMemoryMapsDumpProvider>>::get(); |
143 } | 142 } |
144 | 143 |
145 ProcessMemoryMapsDumpProvider::ProcessMemoryMapsDumpProvider() { | 144 ProcessMemoryMapsDumpProvider::ProcessMemoryMapsDumpProvider() { |
146 } | 145 } |
147 | 146 |
148 ProcessMemoryMapsDumpProvider::~ProcessMemoryMapsDumpProvider() { | 147 ProcessMemoryMapsDumpProvider::~ProcessMemoryMapsDumpProvider() { |
149 } | 148 } |
150 | 149 |
151 // Called at trace dump point time. Creates a snapshot of the memory maps for | 150 // Called at trace dump point time. Creates a snapshot of the memory maps for |
152 // the current process. | 151 // the current process. |
153 bool ProcessMemoryMapsDumpProvider::OnMemoryDump(const MemoryDumpArgs& args, | 152 bool ProcessMemoryMapsDumpProvider::OnMemoryDump(const MemoryDumpArgs& args, |
154 ProcessMemoryDump* pmd) { | 153 ProcessMemoryDump* pmd) { |
155 // Snapshot of memory maps is not taken for light dump requests. | 154 // Snapshot of memory maps is not taken for light dump requests. |
156 if (args.level_of_detail == MemoryDumpLevelOfDetail::LIGHT) | 155 if (args.level_of_detail == MemoryDumpLevelOfDetail::LIGHT) |
157 return true; | 156 return true; |
158 | 157 |
159 uint32 res = 0; | 158 uint32 res = 0; |
160 | |
161 #if defined(OS_LINUX) || defined(OS_ANDROID) | |
162 if (UNLIKELY(proc_smaps_for_testing)) { | 159 if (UNLIKELY(proc_smaps_for_testing)) { |
163 res = ReadLinuxProcSmapsFile(proc_smaps_for_testing, pmd->process_mmaps()); | 160 res = ReadLinuxProcSmapsFile(proc_smaps_for_testing, pmd->process_mmaps()); |
164 } else { | 161 } else { |
165 ScopedFILE smaps_file(fopen("/proc/self/smaps", "r")); | 162 ScopedFILE smaps_file(fopen("/proc/self/smaps", "r")); |
166 res = ReadLinuxProcSmapsFile(smaps_file.get(), pmd->process_mmaps()); | 163 res = ReadLinuxProcSmapsFile(smaps_file.get(), pmd->process_mmaps()); |
167 } | 164 } |
168 #else | |
169 LOG(ERROR) << "ProcessMemoryMaps dump provider is supported only on Linux"; | |
170 #endif | |
171 | 165 |
172 if (res > 0) { | 166 if (res > 0) { |
173 pmd->set_has_process_mmaps(); | 167 pmd->set_has_process_mmaps(); |
174 return true; | 168 return true; |
175 } | 169 } |
176 | |
177 return false; | 170 return false; |
178 } | 171 } |
179 | 172 |
180 } // namespace trace_event | 173 } // namespace trace_event |
181 } // namespace base | 174 } // namespace base |
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