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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/threading/thread_restrictions.h"
#include <utility>
#include "base/compiler_specific.h"
#include "base/dcheck_is_on.h"
#include "base/debug/stack_trace.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/test/gtest_util.h"
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace {
class ThreadRestrictionsTest : public testing::Test {
public:
ThreadRestrictionsTest() = default;
ThreadRestrictionsTest(const ThreadRestrictionsTest&) = delete;
ThreadRestrictionsTest& operator=(const ThreadRestrictionsTest&) = delete;
~ThreadRestrictionsTest() override {
internal::ResetThreadRestrictionsForTesting();
}
};
} // namespace
TEST_F(ThreadRestrictionsTest, BlockingAllowedByDefault) {
internal::AssertBlockingAllowed();
}
TEST_F(ThreadRestrictionsTest, ScopedDisallowBlocking) {
{
ScopedDisallowBlocking scoped_disallow_blocking;
EXPECT_DCHECK_DEATH({ internal::AssertBlockingAllowed(); });
}
internal::AssertBlockingAllowed();
}
TEST_F(ThreadRestrictionsTest, ScopedAllowBlocking) {
ScopedDisallowBlocking scoped_disallow_blocking;
{
ScopedAllowBlocking scoped_allow_blocking;
internal::AssertBlockingAllowed();
}
EXPECT_DCHECK_DEATH({ internal::AssertBlockingAllowed(); });
}
TEST_F(ThreadRestrictionsTest, ScopedAllowBlockingForTesting) {
ScopedDisallowBlocking scoped_disallow_blocking;
{
ScopedAllowBlockingForTesting scoped_allow_blocking_for_testing;
internal::AssertBlockingAllowed();
}
EXPECT_DCHECK_DEATH({ internal::AssertBlockingAllowed(); });
}
TEST_F(ThreadRestrictionsTest, BaseSyncPrimitivesAllowedByDefault) {
internal::AssertBaseSyncPrimitivesAllowed();
}
TEST_F(ThreadRestrictionsTest, DisallowBaseSyncPrimitives) {
DisallowBaseSyncPrimitives();
EXPECT_DCHECK_DEATH({ internal::AssertBaseSyncPrimitivesAllowed(); });
}
TEST_F(ThreadRestrictionsTest, ScopedAllowBaseSyncPrimitives) {
DisallowBaseSyncPrimitives();
ScopedAllowBaseSyncPrimitives scoped_allow_base_sync_primitives;
internal::AssertBaseSyncPrimitivesAllowed();
}
TEST_F(ThreadRestrictionsTest, ScopedAllowBaseSyncPrimitivesResetsState) {
DisallowBaseSyncPrimitives();
{ ScopedAllowBaseSyncPrimitives scoped_allow_base_sync_primitives; }
EXPECT_DCHECK_DEATH({ internal::AssertBaseSyncPrimitivesAllowed(); });
}
TEST_F(ThreadRestrictionsTest,
ScopedAllowBaseSyncPrimitivesWithBlockingDisallowed) {
ScopedDisallowBlocking scoped_disallow_blocking;
DisallowBaseSyncPrimitives();
// This should DCHECK because blocking is not allowed in this scope
// and OutsideBlockingScope is not passed to the constructor.
EXPECT_DCHECK_DEATH(
{ ScopedAllowBaseSyncPrimitives scoped_allow_base_sync_primitives; });
}
TEST_F(ThreadRestrictionsTest,
ScopedAllowBaseSyncPrimitivesOutsideBlockingScope) {
ScopedDisallowBlocking scoped_disallow_blocking;
DisallowBaseSyncPrimitives();
ScopedAllowBaseSyncPrimitivesOutsideBlockingScope
scoped_allow_base_sync_primitives;
internal::AssertBaseSyncPrimitivesAllowed();
}
TEST_F(ThreadRestrictionsTest,
ScopedAllowBaseSyncPrimitivesOutsideBlockingScopeResetsState) {
DisallowBaseSyncPrimitives();
{
ScopedAllowBaseSyncPrimitivesOutsideBlockingScope
scoped_allow_base_sync_primitives;
}
EXPECT_DCHECK_DEATH({ internal::AssertBaseSyncPrimitivesAllowed(); });
}
TEST_F(ThreadRestrictionsTest, ScopedAllowBaseSyncPrimitivesForTesting) {
DisallowBaseSyncPrimitives();
ScopedAllowBaseSyncPrimitivesForTesting
scoped_allow_base_sync_primitives_for_testing;
internal::AssertBaseSyncPrimitivesAllowed();
}
TEST_F(ThreadRestrictionsTest,
ScopedAllowBaseSyncPrimitivesForTestingResetsState) {
DisallowBaseSyncPrimitives();
{
ScopedAllowBaseSyncPrimitivesForTesting
scoped_allow_base_sync_primitives_for_testing;
}
EXPECT_DCHECK_DEATH({ internal::AssertBaseSyncPrimitivesAllowed(); });
}
TEST_F(ThreadRestrictionsTest,
ScopedAllowBaseSyncPrimitivesForTestingWithBlockingDisallowed) {
ScopedDisallowBlocking scoped_disallow_blocking;
DisallowBaseSyncPrimitives();
// This should not DCHECK.
ScopedAllowBaseSyncPrimitivesForTesting
scoped_allow_base_sync_primitives_for_testing;
}
TEST_F(ThreadRestrictionsTest, ScopedDisallowBaseSyncPrimitives) {
{
ScopedDisallowBaseSyncPrimitives disallow_sync_primitives;
EXPECT_DCHECK_DEATH({ internal::AssertBaseSyncPrimitivesAllowed(); });
}
internal::AssertBaseSyncPrimitivesAllowed();
}
TEST_F(ThreadRestrictionsTest, SingletonAllowedByDefault) {
internal::AssertSingletonAllowed();
}
TEST_F(ThreadRestrictionsTest, DisallowSingleton) {
DisallowSingleton();
EXPECT_DCHECK_DEATH({ internal::AssertSingletonAllowed(); });
}
TEST_F(ThreadRestrictionsTest, ScopedDisallowSingleton) {
{
ScopedDisallowSingleton disallow_sync_primitives;
EXPECT_DCHECK_DEATH({ internal::AssertSingletonAllowed(); });
}
internal::AssertSingletonAllowed();
}
TEST_F(ThreadRestrictionsTest, LongCPUWorkAllowedByDefault) {
AssertLongCPUWorkAllowed();
}
TEST_F(ThreadRestrictionsTest, DisallowUnresponsiveTasks) {
DisallowUnresponsiveTasks();
EXPECT_DCHECK_DEATH(internal::AssertBlockingAllowed());
EXPECT_DCHECK_DEATH(internal::AssertBaseSyncPrimitivesAllowed());
EXPECT_DCHECK_DEATH(AssertLongCPUWorkAllowed());
}
// thread_restriction_checks_and_has_death_tests
#if !BUILDFLAG(IS_NACL) && !BUILDFLAG(IS_ANDROID) && DCHECK_IS_ON() && \
defined(GTEST_HAS_DEATH_TEST)
TEST_F(ThreadRestrictionsTest, BlockingCheckEmitsStack) {
debug::OverrideStackTraceOutputForTesting enable_stacks_in_death_tests(
debug::OverrideStackTraceOutputForTesting::Mode::kForceOutput);
ScopedDisallowBlocking scoped_disallow_blocking;
// The above ScopedDisallowBlocking should be on the blame list for who set
// the ban.
EXPECT_DEATH({ internal::AssertBlockingAllowed(); },
EXPENSIVE_DCHECKS_ARE_ON() &&
debug::StackTrace::WillSymbolizeToStreamForTesting()
? "ScopedDisallowBlocking"
: "");
// And the stack should mention this test body as source.
EXPECT_DEATH({ internal::AssertBlockingAllowed(); },
EXPENSIVE_DCHECKS_ARE_ON() &&
debug::StackTrace::WillSymbolizeToStreamForTesting()
? "BlockingCheckEmitsStack"
: "");
}
class TestCustomDisallow {
public:
NOINLINE TestCustomDisallow() { DisallowBlocking(); }
NOINLINE ~TestCustomDisallow() { PermanentThreadAllowance::AllowBlocking(); }
};
TEST_F(ThreadRestrictionsTest, NestedAllowRestoresPreviousStack) {
debug::OverrideStackTraceOutputForTesting enable_stacks_in_death_tests(
debug::OverrideStackTraceOutputForTesting::Mode::kForceOutput);
TestCustomDisallow custom_disallow;
{
ScopedAllowBlocking scoped_allow;
internal::AssertBlockingAllowed();
}
// TestCustomDisallow should be back on the blame list (as opposed to
// ~ScopedAllowBlocking which is the last one to have changed the state but is
// no longer relevant).
EXPECT_DEATH({ internal::AssertBlockingAllowed(); },
EXPENSIVE_DCHECKS_ARE_ON() &&
debug::StackTrace::WillSymbolizeToStreamForTesting()
? "TestCustomDisallow"
: "");
// And the stack should mention this test body as source.
EXPECT_DEATH({ internal::AssertBlockingAllowed(); },
EXPENSIVE_DCHECKS_ARE_ON() &&
debug::StackTrace::WillSymbolizeToStreamForTesting()
? "NestedAllowRestoresPreviousStack"
: "");
}
#endif // thread_restriction_checks_and_has_death_tests
} // namespace base
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