stack_copier_signal_unittest.cc | Explore in Territory

// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40284755): Remove this and spanify to fix the errors.
#pragma allow_unsafe_buffers
#endif

#include <string.h>
#include <algorithm>
#include <utility>

#include "base/debug/alias.h"
#include "base/profiler/sampling_profiler_thread_token.h"
#include "base/profiler/stack_buffer.h"
#include "base/profiler/stack_copier_signal.h"
#include "base/profiler/thread_delegate_posix.h"
#include "base/synchronization/waitable_event.h"
#include "base/threading/platform_thread.h"
#include "base/threading/simple_thread.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace base {

namespace {

// Values to write to the stack and look for in the copy.
static const uint32_t kStackSentinels[] = …;

class TargetThread : public SimpleThread { … };

class TestStackCopierDelegate : public StackCopier::Delegate { … };

}  // namespace

// ASAN moves local variables outside of the stack extents, which breaks the
// sentinels.
// MSan complains that the memcmp() reads uninitialized memory.
// TSAN hangs on the AsyncSafeWaitableEvent FUTEX_WAIT call.
#if defined(ADDRESS_SANITIZER) || defined(MEMORY_SANITIZER) || \
    defined(THREAD_SANITIZER)
#define MAYBE_CopyStack …
#elif BUILDFLAG(IS_LINUX)
// We don't support getting the stack base address on Linux, and thus can't
// copy the stack. // https://crbug.com/1394278
#define MAYBE_CopyStack …
#else
#define MAYBE_CopyStack …
#endif
TEST(StackCopierSignalTest, MAYBE_CopyStack) { … }

// TSAN hangs on the AsyncSafeWaitableEvent FUTEX_WAIT call.
#if defined(THREAD_SANITIZER)
#define MAYBE_CopyStackTimestamp …
#elif BUILDFLAG(IS_LINUX)
// We don't support getting the stack base address on Linux, and thus can't
// copy the stack. // https://crbug.com/1394278
#define MAYBE_CopyStackTimestamp …
#else
#define MAYBE_CopyStackTimestamp …
#endif
TEST(StackCopierSignalTest, MAYBE_CopyStackTimestamp) { … }

// TSAN hangs on the AsyncSafeWaitableEvent FUTEX_WAIT call.
#if defined(THREAD_SANITIZER)
#define MAYBE_CopyStackDelegateInvoked …
#elif BUILDFLAG(IS_LINUX)
// We don't support getting the stack base address on Linux, and thus can't
// copy the stack. // https://crbug.com/1394278
#define MAYBE_CopyStackDelegateInvoked …
#else
#define MAYBE_CopyStackDelegateInvoked …
#endif
TEST(StackCopierSignalTest, MAYBE_CopyStackDelegateInvoked) { … }

// Limit to 32-bit Android, which is the platform we care about for this
// functionality. The test is broken on too many other varied platforms to try
// to selectively disable.
#if !(BUILDFLAG(IS_ANDROID) && defined(ARCH_CPU_32_BITS))
#define MAYBE_CopyStackFromOtherThread …
#elif BUILDFLAG(IS_LINUX)
// We don't support getting the stack base address on Linux, and thus can't
// copy the stack. // https://crbug.com/1394278
#define MAYBE_CopyStackFromOtherThread …
#else
#define MAYBE_CopyStackFromOtherThread …
#endif
TEST(StackCopierSignalTest, MAYBE_CopyStackFromOtherThread) { … }

}  // namespace base
chromium/base/profiler/stack_copier_signal_unittest.cc
