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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/allocation_recorder/crash_handler/payload.h"
#include <algorithm>
#include "base/allocator/dispatcher/notification_data.h"
#include "base/allocator/dispatcher/subsystem.h"
#include "base/bits.h"
#include "base/containers/span.h"
#include "base/debug/allocation_trace.h"
#include "testing/gtest/include/gtest/gtest.h"
using base::allocator::dispatcher::AllocationNotificationData;
using base::allocator::dispatcher::AllocationSubsystem;
using base::allocator::dispatcher::FreeNotificationData;
using base::debug::tracer::AllocationTraceRecorder;
using base::debug::tracer::AllocationTraceRecorderStatistics;
using base::debug::tracer::OperationRecord;
using testing::TestWithParam;
namespace allocation_recorder::crash_handler {
namespace {
void CreateFakeAllocationData(AllocationTraceRecorder& recorder,
uint64_t number_of_entries) {
for (uint64_t entry_counter = 0; entry_counter < number_of_entries;
++entry_counter) {
if (entry_counter & 0x1) {
recorder.OnFree(
FreeNotificationData(reinterpret_cast<void*>(entry_counter),
AllocationSubsystem::kPartitionAllocator));
} else {
recorder.OnAllocation(
AllocationNotificationData(&recorder, entry_counter, nullptr,
AllocationSubsystem::kPartitionAllocator));
}
}
}
void VerifyAllocationEntriesAreEqual(
const base::debug::tracer::OperationRecord& source_entry,
const ::allocation_recorder::MemoryOperation& report_entry) {
EXPECT_EQ(reinterpret_cast<uint64_t>(source_entry.GetAddress()),
report_entry.address());
if (source_entry.GetOperationType() ==
base::debug::tracer::OperationType::kAllocation) {
ASSERT_TRUE(report_entry.has_size());
EXPECT_EQ(source_entry.GetSize(), report_entry.size());
} else {
ASSERT_FALSE(report_entry.has_size());
}
switch (source_entry.GetOperationType()) {
case base::debug::tracer::OperationType::kAllocation:
EXPECT_EQ(report_entry.operation_type(),
::allocation_recorder::OperationType::ALLOCATION);
break;
case base::debug::tracer::OperationType::kFree:
EXPECT_EQ(report_entry.operation_type(),
::allocation_recorder::OperationType::FREE);
break;
case base::debug::tracer::OperationType::kNone:
ASSERT_NE(source_entry.GetOperationType(),
base::debug::tracer::OperationType::kNone);
}
ASSERT_TRUE(report_entry.has_stack_trace());
ASSERT_LE(std::ssize(report_entry.stack_trace().frames()),
std::ssize(source_entry.GetStackTrace()));
const auto& report_frames = report_entry.stack_trace().frames();
std::vector<const void*> converted_frames;
std::ranges::transform(
report_frames, std::back_inserter(converted_frames),
[](const allocation_recorder::StackFrame& frame) {
return reinterpret_cast<const void*>(frame.address());
});
const auto [converted_call_stack_mismatch, source_call_stack_mismatch] =
std::mismatch(std::begin(converted_frames), std::end(converted_frames),
std::begin(source_entry.GetStackTrace()));
ASSERT_EQ(converted_call_stack_mismatch, std::end(converted_frames));
EXPECT_TRUE(std::all_of(source_call_stack_mismatch,
std::end(source_entry.GetStackTrace()),
[](const void* ptr) { return ptr == nullptr; }));
}
} // namespace
class CreatePayloadWithMemoryOperationReportTest : public testing::Test {
public:
AllocationTraceRecorder& GetRecorder() { return *recorder_; }
private:
// The recorder under test. Depending on number and size of traces, it
// requires quite a lot of space. Therefore, we create it on heap to avoid any
// out-of-stack scenarios.
std::unique_ptr<AllocationTraceRecorder> const recorder_ =
std::make_unique<AllocationTraceRecorder>();
};
TEST_F(CreatePayloadWithMemoryOperationReportTest, Verify) {
constexpr size_t number_of_entries = 1024;
auto& recorder = GetRecorder();
CreateFakeAllocationData(recorder, number_of_entries);
ASSERT_EQ(recorder.size(), number_of_entries);
const allocation_recorder::Payload payload =
CreatePayloadWithMemoryOperationReport(recorder);
ASSERT_TRUE(payload.operation_report().has_statistics());
EXPECT_EQ(
number_of_entries,
payload.operation_report().statistics().total_number_of_operations());
#if BUILDFLAG(ENABLE_ALLOCATION_TRACE_RECORDER_FULL_REPORTING)
ASSERT_TRUE(
payload.operation_report().statistics().has_total_number_of_collisions());
EXPECT_EQ(
0ul,
payload.operation_report().statistics().total_number_of_collisions());
#endif
ASSERT_TRUE(payload.has_operation_report());
ASSERT_EQ(static_cast<int>(number_of_entries),
payload.operation_report().memory_operations().size());
for (size_t entry_index = 0; entry_index < number_of_entries; ++entry_index) {
const auto& source_entry = recorder[entry_index];
const auto& converted_entry =
payload.operation_report().memory_operations().at(entry_index);
VerifyAllocationEntriesAreEqual(source_entry, converted_entry);
}
}
TEST_F(CreatePayloadWithMemoryOperationReportTest, VerifyErrorDataIsNotSet) {
auto& recorder = GetRecorder();
CreateFakeAllocationData(recorder, 8);
const allocation_recorder::Payload payload =
CreatePayloadWithMemoryOperationReport(recorder);
EXPECT_FALSE(payload.has_processing_failures());
}
TEST(CreatePayloadWithProcessingFailuresTest, VerifySingleMessage) {
const std::string_view message = "This is a very important message.";
const allocation_recorder::Payload payload =
CreatePayloadWithProcessingFailures(message);
ASSERT_TRUE(payload.has_processing_failures());
EXPECT_EQ(1, payload.processing_failures().messages().size());
EXPECT_EQ(message, payload.processing_failures().messages().at(0));
}
TEST(CreatePayloadWithProcessingFailuresTest, VerifyMultipleMessages) {
const std::string_view messages[] = {"This is a very important message.",
"You'd better not ignore it."};
const allocation_recorder::Payload payload =
CreatePayloadWithProcessingFailures(base::span(messages));
ASSERT_TRUE(payload.has_processing_failures());
EXPECT_EQ(std::ssize(messages),
payload.processing_failures().messages().size());
for (int message_index = 0; const auto& source_message : messages) {
EXPECT_EQ(source_message,
payload.processing_failures().messages().at(message_index))
<< " at index=" << message_index;
++message_index;
}
}
TEST(CreatePayloadWithProcessingFailuresTest, VerifyRegularReportDataIsNotSet) {
const std::string_view message = "This is a very important message.";
const allocation_recorder::Payload payload =
CreatePayloadWithProcessingFailures(message);
EXPECT_FALSE(payload.has_operation_report());
}
} // namespace allocation_recorder::crash_handler
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