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Unified Diff: base/trace_event/process_memory_maps_dump_provider_unittest.cc

Issue 1617263002: Revert of [tracing] Dump child processes' memory metrics in browser (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@web_cache2_base
Patch Set: Created 4 years, 11 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
new file mode 100644
index 0000000000000000000000000000000000000000..624f96fcb0a18517b645eada3b29ddec04537680
--- /dev/null
+++ b/base/trace_event/process_memory_maps_dump_provider_unittest.cc
@@ -0,0 +1,190 @@
+// 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 <stdint.h>
+
+#include "base/files/file_util.h"
+#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 {
+
+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: 4 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";
+
+void CreateAndSetSmapsFileForTesting(const char* smaps_string,
+ ScopedFILE& file) {
+ FilePath temp_path;
+ FILE* temp_file = CreateAndOpenTemporaryFile(&temp_path);
+ file.reset(temp_file);
+ ASSERT_TRUE(temp_file);
+
+ ASSERT_TRUE(base::WriteFileDescriptor(fileno(temp_file), smaps_string,
+ strlen(smaps_string)));
+}
+
+} // namespace
+
+TEST(ProcessMemoryMapsDumpProviderTest, ParseProcSmaps) {
+ const uint32_t kProtR = ProcessMemoryMaps::VMRegion::kProtectionFlagsRead;
+ const uint32_t kProtW = ProcessMemoryMaps::VMRegion::kProtectionFlagsWrite;
+ const uint32_t kProtX = ProcessMemoryMaps::VMRegion::kProtectionFlagsExec;
+ const MemoryDumpArgs dump_args = {MemoryDumpLevelOfDetail::DETAILED};
+
+ auto pmmdp = ProcessMemoryMapsDumpProvider::GetInstance();
+
+ // Emulate an empty /proc/self/smaps.
+ ProcessMemoryDump pmd_invalid(nullptr /* session_state */);
+ ScopedFILE empty_file(OpenFile(FilePath("/dev/null"), "r"));
+ ASSERT_TRUE(empty_file.get());
+ ProcessMemoryMapsDumpProvider::proc_smaps_for_testing = empty_file.get();
+ pmmdp->OnMemoryDump(dump_args, &pmd_invalid);
+ ASSERT_FALSE(pmd_invalid.has_process_mmaps());
+
+ // Parse the 1st smaps file.
+ ProcessMemoryDump pmd_1(nullptr /* session_state */);
+ ScopedFILE temp_file1;
+ CreateAndSetSmapsFileForTesting(kTestSmaps1, temp_file1);
+ ProcessMemoryMapsDumpProvider::proc_smaps_for_testing = temp_file1.get();
+ pmmdp->OnMemoryDump(dump_args, &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 * 1024UL, regions_1[0].byte_stats_shared_clean_resident);
+ EXPECT_EQ(0UL, regions_1[0].byte_stats_shared_dirty_resident);
+ EXPECT_EQ(0UL, regions_1[0].byte_stats_private_clean_resident);
+ EXPECT_EQ(68 * 1024UL, regions_1[0].byte_stats_private_dirty_resident);
+ EXPECT_EQ(4 * 1024UL, regions_1[0].byte_stats_swapped);
+
+ 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 * 1024UL, regions_1[1].byte_stats_shared_clean_resident);
+ EXPECT_EQ(4 * 1024UL, regions_1[1].byte_stats_shared_dirty_resident);
+ EXPECT_EQ(60 * 1024UL, regions_1[1].byte_stats_private_clean_resident);
+ EXPECT_EQ(8 * 1024UL, regions_1[1].byte_stats_private_dirty_resident);
+ EXPECT_EQ(0 * 1024UL, regions_1[1].byte_stats_swapped);
+
+ // Parse the 2nd smaps file.
+ ProcessMemoryDump pmd_2(nullptr /* session_state */);
+ ScopedFILE temp_file2;
+ CreateAndSetSmapsFileForTesting(kTestSmaps2, temp_file2);
+ ProcessMemoryMapsDumpProvider::proc_smaps_for_testing = temp_file2.get();
+ pmmdp->OnMemoryDump(dump_args, &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 * 1024UL, regions_2[0].byte_stats_shared_clean_resident);
+ EXPECT_EQ(12 * 1024UL, regions_2[0].byte_stats_shared_dirty_resident);
+ EXPECT_EQ(8 * 1024UL, regions_2[0].byte_stats_private_clean_resident);
+ EXPECT_EQ(4 * 1024UL, regions_2[0].byte_stats_private_dirty_resident);
+ EXPECT_EQ(0 * 1024UL, regions_2[0].byte_stats_swapped);
+}
+
+} // namespace trace_event
+} // namespace base
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