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// 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/memory_allocator_dump.h"
#include <stdint.h>
#include "base/format_macros.h"
#include "base/strings/stringprintf.h"
#include "base/trace_event/memory_allocator_dump_guid.h"
#include "base/trace_event/memory_dump_provider.h"
#include "base/trace_event/memory_dump_session_state.h"
#include "base/trace_event/process_memory_dump.h"
#include "base/trace_event/trace_event_argument.h"
#include "base/values.h"
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace trace_event {
namespace {
class FakeMemoryAllocatorDumpProvider : public MemoryDumpProvider {
public:
bool OnMemoryDump(const MemoryDumpArgs& args,
ProcessMemoryDump* pmd) override {
MemoryAllocatorDump* root_heap =
pmd->CreateAllocatorDump("foobar_allocator");
root_heap->AddScalar(MemoryAllocatorDump::kNameSize,
MemoryAllocatorDump::kUnitsBytes, 4096);
root_heap->AddScalar(MemoryAllocatorDump::kNameObjectCount,
MemoryAllocatorDump::kUnitsObjects, 42);
root_heap->AddScalar("attr1", "units1", 1234);
root_heap->AddString("attr2", "units2", "string_value");
root_heap->AddScalarF("attr3", "units3", 42.5f);
MemoryAllocatorDump* sub_heap =
pmd->CreateAllocatorDump("foobar_allocator/sub_heap");
sub_heap->AddScalar(MemoryAllocatorDump::kNameSize,
MemoryAllocatorDump::kUnitsBytes, 1);
sub_heap->AddScalar(MemoryAllocatorDump::kNameObjectCount,
MemoryAllocatorDump::kUnitsObjects, 3);
pmd->CreateAllocatorDump("foobar_allocator/sub_heap/empty");
// Leave the rest of sub heap deliberately uninitialized, to check that
// CreateAllocatorDump returns a properly zero-initialized object.
return true;
}
};
std::unique_ptr<Value> CheckAttribute(const MemoryAllocatorDump* dump,
const std::string& name,
const char* expected_type,
const char* expected_units) {
std::unique_ptr<Value> raw_attrs =
dump->attributes_for_testing()->ToBaseValue();
DictionaryValue* args = nullptr;
DictionaryValue* arg = nullptr;
std::string arg_value;
const Value* out_value = nullptr;
EXPECT_TRUE(raw_attrs->GetAsDictionary(&args));
EXPECT_TRUE(args->GetDictionary(name, &arg));
EXPECT_TRUE(arg->GetString("type", &arg_value));
EXPECT_EQ(expected_type, arg_value);
EXPECT_TRUE(arg->GetString("units", &arg_value));
EXPECT_EQ(expected_units, arg_value);
EXPECT_TRUE(arg->Get("value", &out_value));
return out_value ? out_value->CreateDeepCopy() : std::unique_ptr<Value>();
}
void CheckString(const MemoryAllocatorDump* dump,
const std::string& name,
const char* expected_type,
const char* expected_units,
const std::string& expected_value) {
std::string attr_str_value;
auto attr_value = CheckAttribute(dump, name, expected_type, expected_units);
EXPECT_TRUE(attr_value->GetAsString(&attr_str_value));
EXPECT_EQ(expected_value, attr_str_value);
}
void CheckScalar(const MemoryAllocatorDump* dump,
const std::string& name,
const char* expected_units,
uint64_t expected_value) {
CheckString(dump, name, MemoryAllocatorDump::kTypeScalar, expected_units,
StringPrintf("%" PRIx64, expected_value));
}
void CheckScalarF(const MemoryAllocatorDump* dump,
const std::string& name,
const char* expected_units,
double expected_value) {
auto attr_value = CheckAttribute(dump, name, MemoryAllocatorDump::kTypeScalar,
expected_units);
double attr_double_value;
EXPECT_TRUE(attr_value->GetAsDouble(&attr_double_value));
EXPECT_EQ(expected_value, attr_double_value);
}
} // namespace
TEST(MemoryAllocatorDumpTest, GuidGeneration) {
std::unique_ptr<MemoryAllocatorDump> mad(
new MemoryAllocatorDump("foo", nullptr, MemoryAllocatorDumpGuid(0x42u)));
ASSERT_EQ("42", mad->guid().ToString());
// If the dumper does not provide a Guid, the MAD will make one up on the
// flight. Furthermore that Guid will stay stable across across multiple
// snapshots if the |absolute_name| of the dump doesn't change
mad.reset(new MemoryAllocatorDump("bar", nullptr));
const MemoryAllocatorDumpGuid guid_bar = mad->guid();
ASSERT_FALSE(guid_bar.empty());
ASSERT_FALSE(guid_bar.ToString().empty());
ASSERT_EQ(guid_bar, mad->guid());
mad.reset(new MemoryAllocatorDump("bar", nullptr));
const MemoryAllocatorDumpGuid guid_bar_2 = mad->guid();
ASSERT_EQ(guid_bar, guid_bar_2);
mad.reset(new MemoryAllocatorDump("baz", nullptr));
const MemoryAllocatorDumpGuid guid_baz = mad->guid();
ASSERT_NE(guid_bar, guid_baz);
}
TEST(MemoryAllocatorDumpTest, DumpIntoProcessMemoryDump) {
FakeMemoryAllocatorDumpProvider fmadp;
MemoryDumpArgs dump_args = {MemoryDumpLevelOfDetail::DETAILED};
ProcessMemoryDump pmd(new MemoryDumpSessionState, dump_args);
fmadp.OnMemoryDump(dump_args, &pmd);
ASSERT_EQ(3u, pmd.allocator_dumps().size());
const MemoryAllocatorDump* root_heap =
pmd.GetAllocatorDump("foobar_allocator");
ASSERT_NE(nullptr, root_heap);
EXPECT_EQ("foobar_allocator", root_heap->absolute_name());
CheckScalar(root_heap, MemoryAllocatorDump::kNameSize,
MemoryAllocatorDump::kUnitsBytes, 4096);
CheckScalar(root_heap, MemoryAllocatorDump::kNameObjectCount,
MemoryAllocatorDump::kUnitsObjects, 42);
CheckScalar(root_heap, "attr1", "units1", 1234);
CheckString(root_heap, "attr2", MemoryAllocatorDump::kTypeString, "units2",
"string_value");
CheckScalarF(root_heap, "attr3", "units3", 42.5f);
const MemoryAllocatorDump* sub_heap =
pmd.GetAllocatorDump("foobar_allocator/sub_heap");
ASSERT_NE(nullptr, sub_heap);
EXPECT_EQ("foobar_allocator/sub_heap", sub_heap->absolute_name());
CheckScalar(sub_heap, MemoryAllocatorDump::kNameSize,
MemoryAllocatorDump::kUnitsBytes, 1);
CheckScalar(sub_heap, MemoryAllocatorDump::kNameObjectCount,
MemoryAllocatorDump::kUnitsObjects, 3);
const MemoryAllocatorDump* empty_sub_heap =
pmd.GetAllocatorDump("foobar_allocator/sub_heap/empty");
ASSERT_NE(nullptr, empty_sub_heap);
EXPECT_EQ("foobar_allocator/sub_heap/empty", empty_sub_heap->absolute_name());
auto raw_attrs = empty_sub_heap->attributes_for_testing()->ToBaseValue();
DictionaryValue* attrs = nullptr;
ASSERT_TRUE(raw_attrs->GetAsDictionary(&attrs));
ASSERT_FALSE(attrs->HasKey(MemoryAllocatorDump::kNameSize));
ASSERT_FALSE(attrs->HasKey(MemoryAllocatorDump::kNameObjectCount));
// Check that the AsValueInfo doesn't hit any DCHECK.
std::unique_ptr<TracedValue> traced_value(new TracedValue);
pmd.AsValueInto(traced_value.get());
}
// DEATH tests are not supported in Android / iOS.
#if !defined(NDEBUG) && !defined(OS_ANDROID) && !defined(OS_IOS)
TEST(MemoryAllocatorDumpTest, ForbidDuplicatesDeathTest) {
FakeMemoryAllocatorDumpProvider fmadp;
MemoryDumpArgs dump_args = {MemoryDumpLevelOfDetail::DETAILED};
ProcessMemoryDump pmd(new MemoryDumpSessionState, dump_args);
pmd.CreateAllocatorDump("foo_allocator");
pmd.CreateAllocatorDump("bar_allocator/heap");
ASSERT_DEATH(pmd.CreateAllocatorDump("foo_allocator"), "");
ASSERT_DEATH(pmd.CreateAllocatorDump("bar_allocator/heap"), "");
ASSERT_DEATH(pmd.CreateAllocatorDump(""), "");
}
#endif
} // namespace trace_event
} // namespace base
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