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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 "components/tracing/common/process_metrics_memory_dump_provider.h" | 5 #include "components/tracing/common/process_metrics_memory_dump_provider.h" |
6 | 6 |
7 #include <fcntl.h> | 7 #include <fcntl.h> |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 | 9 |
10 #include <map> | 10 #include <map> |
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31 #include <mach/shared_region.h> | 31 #include <mach/shared_region.h> |
32 #include <sys/param.h> | 32 #include <sys/param.h> |
33 | 33 |
34 #include <mach-o/dyld_images.h> | 34 #include <mach-o/dyld_images.h> |
35 #include <mach-o/loader.h> | 35 #include <mach-o/loader.h> |
36 #include <mach/mach.h> | 36 #include <mach/mach.h> |
37 | 37 |
38 #include "base/numerics/safe_math.h" | 38 #include "base/numerics/safe_math.h" |
39 #endif // defined(OS_MACOSX) | 39 #endif // defined(OS_MACOSX) |
40 | 40 |
41 #if defined(OS_WIN) | |
42 #include <psapi.h> | |
43 #include <tchar.h> | |
44 #include <windows.h> | |
45 | |
46 #include <base/strings/sys_string_conversions.h> | |
47 #endif | |
48 | |
41 namespace tracing { | 49 namespace tracing { |
42 | 50 |
43 namespace { | 51 namespace { |
44 | 52 |
45 base::LazyInstance< | 53 base::LazyInstance< |
46 std::map<base::ProcessId, | 54 std::map<base::ProcessId, |
47 std::unique_ptr<ProcessMetricsMemoryDumpProvider>>>::Leaky | 55 std::unique_ptr<ProcessMetricsMemoryDumpProvider>>>::Leaky |
48 g_dump_providers_map = LAZY_INSTANCE_INITIALIZER; | 56 g_dump_providers_map = LAZY_INSTANCE_INITIALIZER; |
49 | 57 |
50 #if defined(OS_LINUX) || defined(OS_ANDROID) | 58 #if defined(OS_LINUX) || defined(OS_ANDROID) |
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226 base::ScopedFILE smaps_file(fopen(file_name.c_str(), "r")); | 234 base::ScopedFILE smaps_file(fopen(file_name.c_str(), "r")); |
227 res = ReadLinuxProcSmapsFile(smaps_file.get(), pmd->process_mmaps()); | 235 res = ReadLinuxProcSmapsFile(smaps_file.get(), pmd->process_mmaps()); |
228 } | 236 } |
229 | 237 |
230 if (res) | 238 if (res) |
231 pmd->set_has_process_mmaps(); | 239 pmd->set_has_process_mmaps(); |
232 return res; | 240 return res; |
233 } | 241 } |
234 #endif // defined(OS_LINUX) || defined(OS_ANDROID) | 242 #endif // defined(OS_LINUX) || defined(OS_ANDROID) |
235 | 243 |
244 #if defined(OS_WIN) | |
245 bool ProcessMetricsMemoryDumpProvider::DumpProcessMemoryMaps( | |
246 const base::trace_event::MemoryDumpArgs& args, | |
247 base::trace_event::ProcessMemoryDump* pmd) { | |
248 // Fetch handles to each of the modules loaded in this process. The process | |
249 // itself retains ownership of the returned handles. | |
250 DWORD requested_module_count = 1024; | |
251 DWORD result_module_count = 0; | |
252 std::vector<HMODULE> modules; | |
253 while (true) { | |
254 modules.resize(requested_module_count); | |
255 DWORD output_size = 0; | |
256 BOOL result = ::EnumProcessModules(::GetCurrentProcess(), modules.data(), | |
257 requested_module_count * sizeof(HMODULE), | |
258 &output_size); | |
259 if (!result) | |
260 return false; | |
261 result_module_count = output_size / sizeof(HMODULE); | |
etienneb
2017/02/23 21:11:36
The way we were used to handle these racy windows
erikchen
2017/02/23 21:33:33
Sorry, I don't understand what you mean. AFAICT, t
etienneb
2017/02/24 16:37:15
I'm fine with the switch. thx.
| |
262 | |
263 if (result_module_count <= requested_module_count) | |
264 break; | |
265 | |
266 // Try again. Add a small buffer, since ::EnumProcessModules can be racy. | |
267 requested_module_count = result_module_count + 5; | |
268 } | |
269 | |
270 // Query the base address for each module, and attach it to the dump. | |
271 for (DWORD i = 0; i < result_module_count; ++i) { | |
272 wchar_t module_name[MAX_PATH]; | |
273 BOOL result = ::GetModuleFileName(modules[i], module_name, MAX_PATH); | |
274 if (!result) | |
275 continue; | |
276 | |
277 MODULEINFO module_info; | |
278 result = ::GetModuleInformation(::GetCurrentProcess(), modules[i], | |
279 &module_info, sizeof(MODULEINFO)); | |
280 if (!result) | |
281 continue; | |
282 base::trace_event::ProcessMemoryMaps::VMRegion region; | |
283 region.size_in_bytes = module_info.SizeOfImage; | |
284 region.mapped_file = base::SysWideToNativeMB(module_name); | |
285 region.start_address = reinterpret_cast<uint64_t>(module_info.lpBaseOfDll); | |
286 pmd->process_mmaps()->AddVMRegion(region); | |
287 } | |
288 if (!pmd->process_mmaps()->vm_regions().empty()) | |
289 pmd->set_has_process_mmaps(); | |
290 return true; | |
291 } | |
292 #endif // defined(OS_WIN) | |
293 | |
236 #if defined(OS_MACOSX) | 294 #if defined(OS_MACOSX) |
237 | 295 |
238 namespace { | 296 namespace { |
239 | 297 |
240 using VMRegion = base::trace_event::ProcessMemoryMaps::VMRegion; | 298 using VMRegion = base::trace_event::ProcessMemoryMaps::VMRegion; |
241 | 299 |
242 bool IsAddressInSharedRegion(uint64_t address) { | 300 bool IsAddressInSharedRegion(uint64_t address) { |
243 return address >= SHARED_REGION_BASE_X86_64 && | 301 return address >= SHARED_REGION_BASE_X86_64 && |
244 address < (SHARED_REGION_BASE_X86_64 + SHARED_REGION_SIZE_X86_64); | 302 address < (SHARED_REGION_BASE_X86_64 + SHARED_REGION_SIZE_X86_64); |
245 } | 303 } |
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540 | 598 |
541 ProcessMetricsMemoryDumpProvider::~ProcessMetricsMemoryDumpProvider() {} | 599 ProcessMetricsMemoryDumpProvider::~ProcessMetricsMemoryDumpProvider() {} |
542 | 600 |
543 // Called at trace dump point time. Creates a snapshot of the memory maps for | 601 // Called at trace dump point time. Creates a snapshot of the memory maps for |
544 // the current process. | 602 // the current process. |
545 bool ProcessMetricsMemoryDumpProvider::OnMemoryDump( | 603 bool ProcessMetricsMemoryDumpProvider::OnMemoryDump( |
546 const base::trace_event::MemoryDumpArgs& args, | 604 const base::trace_event::MemoryDumpArgs& args, |
547 base::trace_event::ProcessMemoryDump* pmd) { | 605 base::trace_event::ProcessMemoryDump* pmd) { |
548 bool res = DumpProcessTotals(args, pmd); | 606 bool res = DumpProcessTotals(args, pmd); |
549 | 607 |
550 #if defined(OS_LINUX) || defined(OS_ANDROID) || defined(OS_MACOSX) | |
551 if (args.level_of_detail == | 608 if (args.level_of_detail == |
552 base::trace_event::MemoryDumpLevelOfDetail::DETAILED) | 609 base::trace_event::MemoryDumpLevelOfDetail::DETAILED) |
553 res &= DumpProcessMemoryMaps(args, pmd); | 610 res &= DumpProcessMemoryMaps(args, pmd); |
554 #endif // defined(OS_LINUX) || defined(OS_ANDROID) || defined(OS_MACOSX) | |
555 return res; | 611 return res; |
556 } | 612 } |
557 | 613 |
558 bool ProcessMetricsMemoryDumpProvider::DumpProcessTotals( | 614 bool ProcessMetricsMemoryDumpProvider::DumpProcessTotals( |
559 const base::trace_event::MemoryDumpArgs& args, | 615 const base::trace_event::MemoryDumpArgs& args, |
560 base::trace_event::ProcessMemoryDump* pmd) { | 616 base::trace_event::ProcessMemoryDump* pmd) { |
561 const uint64_t rss_bytes = rss_bytes_for_testing | 617 const uint64_t rss_bytes = rss_bytes_for_testing |
562 ? rss_bytes_for_testing | 618 ? rss_bytes_for_testing |
563 : process_metrics_->GetWorkingSetSize(); | 619 : process_metrics_->GetWorkingSetSize(); |
564 | 620 |
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647 #endif | 703 #endif |
648 } | 704 } |
649 | 705 |
650 void ProcessMetricsMemoryDumpProvider::SuspendFastMemoryPolling() { | 706 void ProcessMetricsMemoryDumpProvider::SuspendFastMemoryPolling() { |
651 #if defined(OS_LINUX) || defined(OS_ANDROID) | 707 #if defined(OS_LINUX) || defined(OS_ANDROID) |
652 fast_polling_statm_fd_.reset(); | 708 fast_polling_statm_fd_.reset(); |
653 #endif | 709 #endif |
654 } | 710 } |
655 | 711 |
656 } // namespace tracing | 712 } // namespace tracing |
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