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Unified Diff: base/trace_event/process_memory_maps_dump_provider_unittest.cc

Issue 951463002: [tracing] Add memory maps dumper impl for Linux/Android (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@mmaps_skeleton
Patch Set: Fix for iOS Created 5 years, 10 months ago
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Index: base/trace_event/process_memory_maps_dump_provider_unittest.cc
diff --git a/base/trace_event/process_memory_maps_dump_provider_unittest.cc b/base/trace_event/process_memory_maps_dump_provider_unittest.cc
index 33c1bbb0f25c2804cb4714ff3a31e376a9596af8..02fd13637dcfa9fde44c13170d93bec385ed381b 100644
--- a/base/trace_event/process_memory_maps_dump_provider_unittest.cc
+++ b/base/trace_event/process_memory_maps_dump_provider_unittest.cc
@@ -16,7 +16,101 @@ 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: 128 kB\n"
+ "Pss: 128 kB\n"
+ "Shared_Clean: 124 kB\n"
+ "Shared_Dirty: 0 kB\n"
+ "Private_Clean: 68 kB\n"
+ "Private_Dirty: 0 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: 0 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.
@@ -34,8 +128,46 @@ TEST(ProcessMemoryMapsDumpProviderTest, ParseProcSmaps) {
pmmdp->DumpInto(&pmd_invalid);
ASSERT_FALSE(pmd_invalid.has_process_mmaps());
- // TODO(primiano): in the next CLs add the code to parse some actual smaps
- // files and check that the parsing logic of the dump provider holds.
+ // 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(0UL, regions_1[0].mapped_file_offset);
+ EXPECT_EQ(296 * 1024UL, regions_1[0].byte_stats_resident);
+ EXPECT_EQ(68 * 1024UL, regions_1[0].byte_stats_anonymous);
+
+ 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(0x00001080UL, regions_1[1].mapped_file_offset);
+ EXPECT_EQ(128 * 1024UL, regions_1[1].byte_stats_resident);
+ EXPECT_EQ(0UL, regions_1[1].byte_stats_anonymous);
+
+ // 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(0UL, regions_2[0].mapped_file_offset);
+ EXPECT_EQ(40 * 1024UL, regions_2[0].byte_stats_resident);
+ EXPECT_EQ(16 * 1024UL, regions_2[0].byte_stats_anonymous);
}
#endif // defined(OS_LINUX) || defined(OS_ANDROID)
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