// 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 #include #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; 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->DumpInto(&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->DumpInto(&pmd_invalid); ASSERT_FALSE(pmd_invalid.has_process_mmaps()); // Parse the 1st smaps file. ProcessMemoryDump pmd_1; std::istringstream test_smaps_1(kTestSmaps1); ProcessMemoryMapsDumpProvider::proc_smaps_for_testing = &test_smaps_1; pmmdp->DumpInto(&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; std::istringstream test_smaps_2(kTestSmaps2); ProcessMemoryMapsDumpProvider::proc_smaps_for_testing = &test_smaps_2; pmmdp->DumpInto(&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