| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "base/trace_event/process_memory_maps_dump_provider.h" |
| |
| #include <fstream> |
| #include <sstream> |
| |
| #include "base/trace_event/process_memory_dump.h" |
| #include "base/trace_event/process_memory_maps.h" |
| #include "base/trace_event/trace_event_argument.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| namespace base { |
| namespace trace_event { |
| |
| #if defined(OS_LINUX) || defined(OS_ANDROID) |
| namespace { |
| const char kTestSmaps1[] = |
| "00400000-004be000 r-xp 00000000 fc:01 1234 /file/1\n" |
| "Size: 760 kB\n" |
| "Rss: 296 kB\n" |
| "Pss: 162 kB\n" |
| "Shared_Clean: 228 kB\n" |
| "Shared_Dirty: 0 kB\n" |
| "Private_Clean: 0 kB\n" |
| "Private_Dirty: 68 kB\n" |
| "Referenced: 296 kB\n" |
| "Anonymous: 68 kB\n" |
| "AnonHugePages: 0 kB\n" |
| "Swap: 0 kB\n" |
| "KernelPageSize: 4 kB\n" |
| "MMUPageSize: 4 kB\n" |
| "Locked: 0 kB\n" |
| "VmFlags: rd ex mr mw me dw sd\n" |
| "ff000000-ff800000 -w-p 00001080 fc:01 0 /file/name with space\n" |
| "Size: 0 kB\n" |
| "Rss: 192 kB\n" |
| "Pss: 128 kB\n" |
| "Shared_Clean: 120 kB\n" |
| "Shared_Dirty: 4 kB\n" |
| "Private_Clean: 60 kB\n" |
| "Private_Dirty: 8 kB\n" |
| "Referenced: 296 kB\n" |
| "Anonymous: 0 kB\n" |
| "AnonHugePages: 0 kB\n" |
| "Swap: 0 kB\n" |
| "KernelPageSize: 4 kB\n" |
| "MMUPageSize: 4 kB\n" |
| "Locked: 0 kB\n" |
| "VmFlags: rd ex mr mw me dw sd"; |
| |
| const char kTestSmaps2[] = |
| // An invalid region, with zero size and overlapping with the last one |
| // (See crbug.com/461237). |
| "7fe7ce79c000-7fe7ce79c000 ---p 00000000 00:00 0 \n" |
| "Size: 4 kB\n" |
| "Rss: 0 kB\n" |
| "Pss: 0 kB\n" |
| "Shared_Clean: 0 kB\n" |
| "Shared_Dirty: 0 kB\n" |
| "Private_Clean: 0 kB\n" |
| "Private_Dirty: 0 kB\n" |
| "Referenced: 0 kB\n" |
| "Anonymous: 0 kB\n" |
| "AnonHugePages: 0 kB\n" |
| "Swap: 0 kB\n" |
| "KernelPageSize: 4 kB\n" |
| "MMUPageSize: 4 kB\n" |
| "Locked: 0 kB\n" |
| "VmFlags: rd ex mr mw me dw sd\n" |
| // A invalid region with its range going backwards. |
| "00400000-00200000 ---p 00000000 00:00 0 \n" |
| "Size: 4 kB\n" |
| "Rss: 0 kB\n" |
| "Pss: 0 kB\n" |
| "Shared_Clean: 0 kB\n" |
| "Shared_Dirty: 0 kB\n" |
| "Private_Clean: 0 kB\n" |
| "Private_Dirty: 0 kB\n" |
| "Referenced: 0 kB\n" |
| "Anonymous: 0 kB\n" |
| "AnonHugePages: 0 kB\n" |
| "Swap: 0 kB\n" |
| "KernelPageSize: 4 kB\n" |
| "MMUPageSize: 4 kB\n" |
| "Locked: 0 kB\n" |
| "VmFlags: rd ex mr mw me dw sd\n" |
| // A good anonymous region at the end. |
| "7fe7ce79c000-7fe7ce7a8000 ---p 00000000 00:00 0 \n" |
| "Size: 48 kB\n" |
| "Rss: 40 kB\n" |
| "Pss: 32 kB\n" |
| "Shared_Clean: 16 kB\n" |
| "Shared_Dirty: 12 kB\n" |
| "Private_Clean: 8 kB\n" |
| "Private_Dirty: 4 kB\n" |
| "Referenced: 40 kB\n" |
| "Anonymous: 16 kB\n" |
| "AnonHugePages: 0 kB\n" |
| "Swap: 0 kB\n" |
| "KernelPageSize: 4 kB\n" |
| "MMUPageSize: 4 kB\n" |
| "Locked: 0 kB\n" |
| "VmFlags: rd wr mr mw me ac sd\n"; |
| } // namespace |
| |
| TEST(ProcessMemoryMapsDumpProviderTest, ParseProcSmaps) { |
| const uint32 kProtR = ProcessMemoryMaps::VMRegion::kProtectionFlagsRead; |
| const uint32 kProtW = ProcessMemoryMaps::VMRegion::kProtectionFlagsWrite; |
| const uint32 kProtX = ProcessMemoryMaps::VMRegion::kProtectionFlagsExec; |
| |
| auto pmmdp = ProcessMemoryMapsDumpProvider::GetInstance(); |
| |
| // Emulate a non-existent /proc/self/smaps. |
| ProcessMemoryDump pmd_invalid(nullptr /* session_state */); |
| std::ifstream non_existent_file("/tmp/does-not-exist"); |
| ProcessMemoryMapsDumpProvider::proc_smaps_for_testing = &non_existent_file; |
| CHECK_EQ(false, non_existent_file.good()); |
| pmmdp->OnMemoryDump(&pmd_invalid); |
| ASSERT_FALSE(pmd_invalid.has_process_mmaps()); |
| |
| // Emulate an empty /proc/self/smaps. |
| std::ifstream empty_file("/dev/null"); |
| ProcessMemoryMapsDumpProvider::proc_smaps_for_testing = &empty_file; |
| CHECK_EQ(true, empty_file.good()); |
| pmmdp->OnMemoryDump(&pmd_invalid); |
| ASSERT_FALSE(pmd_invalid.has_process_mmaps()); |
| |
| // Parse the 1st smaps file. |
| ProcessMemoryDump pmd_1(nullptr /* session_state */); |
| std::istringstream test_smaps_1(kTestSmaps1); |
| ProcessMemoryMapsDumpProvider::proc_smaps_for_testing = &test_smaps_1; |
| pmmdp->OnMemoryDump(&pmd_1); |
| ASSERT_TRUE(pmd_1.has_process_mmaps()); |
| const auto& regions_1 = pmd_1.process_mmaps()->vm_regions(); |
| ASSERT_EQ(2UL, regions_1.size()); |
| |
| EXPECT_EQ(0x00400000UL, regions_1[0].start_address); |
| EXPECT_EQ(0x004be000UL - 0x00400000UL, regions_1[0].size_in_bytes); |
| EXPECT_EQ(kProtR | kProtX, regions_1[0].protection_flags); |
| EXPECT_EQ("/file/1", regions_1[0].mapped_file); |
| EXPECT_EQ(162 * 1024UL, regions_1[0].byte_stats_proportional_resident); |
| EXPECT_EQ((228 + 0) * 1024UL, regions_1[0].byte_stats_shared_resident); |
| EXPECT_EQ((0 + 68) * 1024UL, regions_1[0].byte_stats_private_resident); |
| |
| EXPECT_EQ(0xff000000UL, regions_1[1].start_address); |
| EXPECT_EQ(0xff800000UL - 0xff000000UL, regions_1[1].size_in_bytes); |
| EXPECT_EQ(kProtW, regions_1[1].protection_flags); |
| EXPECT_EQ("/file/name with space", regions_1[1].mapped_file); |
| EXPECT_EQ(128 * 1024UL, regions_1[1].byte_stats_proportional_resident); |
| EXPECT_EQ((120 + 4) * 1024UL, regions_1[1].byte_stats_shared_resident); |
| EXPECT_EQ((60 + 8) * 1024UL, regions_1[1].byte_stats_private_resident); |
| |
| // Parse the 2nd smaps file. |
| ProcessMemoryDump pmd_2(nullptr /* session_state */); |
| std::istringstream test_smaps_2(kTestSmaps2); |
| ProcessMemoryMapsDumpProvider::proc_smaps_for_testing = &test_smaps_2; |
| pmmdp->OnMemoryDump(&pmd_2); |
| ASSERT_TRUE(pmd_2.has_process_mmaps()); |
| const auto& regions_2 = pmd_2.process_mmaps()->vm_regions(); |
| ASSERT_EQ(1UL, regions_2.size()); |
| EXPECT_EQ(0x7fe7ce79c000UL, regions_2[0].start_address); |
| EXPECT_EQ(0x7fe7ce7a8000UL - 0x7fe7ce79c000UL, regions_2[0].size_in_bytes); |
| EXPECT_EQ(0U, regions_2[0].protection_flags); |
| EXPECT_EQ("", regions_2[0].mapped_file); |
| EXPECT_EQ(32 * 1024UL, regions_2[0].byte_stats_proportional_resident); |
| EXPECT_EQ((16 + 12) * 1024UL, regions_2[0].byte_stats_shared_resident); |
| EXPECT_EQ((8 + 4) * 1024UL, regions_2[0].byte_stats_private_resident); |
| } |
| #endif // defined(OS_LINUX) || defined(OS_ANDROID) |
| |
| } // namespace trace_event |
| } // namespace base |
