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// Copyright 2020 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
#include "gtest/gtest.h"
#include "pw_sync/interrupt_spin_lock.h"
#include "pw_sync_private/borrow_lockable_tests.h"
namespace pw::sync {
namespace {
extern "C" {
// Functions defined in interrupt_spin_lock_facade_test_c.c which call the API
// from C.
void pw_sync_InterruptSpinLock_CallLock(
pw_sync_InterruptSpinLock* interrupt_spin_lock);
bool pw_sync_InterruptSpinLock_CallTryLock(
pw_sync_InterruptSpinLock* interrupt_spin_lock);
void pw_sync_InterruptSpinLock_CallUnlock(
pw_sync_InterruptSpinLock* interrupt_spin_lock);
} // extern "C"
TEST(InterruptSpinLock, LockUnlock) {
pw::sync::InterruptSpinLock interrupt_spin_lock;
interrupt_spin_lock.lock();
interrupt_spin_lock.unlock();
}
// TODO: b/235284163 - Add real concurrency tests once we have pw::thread on SMP
// systems given that uniprocessor systems cannot fail to acquire an ISL.
InterruptSpinLock static_interrupt_spin_lock;
TEST(InterruptSpinLock, LockUnlockStatic) {
static_interrupt_spin_lock.lock();
// TODO: b/235284163 - Ensure other cores fail to lock when its locked.
// EXPECT_FALSE(static_interrupt_spin_lock.try_lock());
static_interrupt_spin_lock.unlock();
}
TEST(InterruptSpinLock, TryLockUnlock) {
pw::sync::InterruptSpinLock interrupt_spin_lock;
const bool locked = interrupt_spin_lock.try_lock();
EXPECT_TRUE(locked);
if (locked) {
// TODO: b/235284163 - Ensure other cores fail to lock when its locked.
// EXPECT_FALSE(interrupt_spin_lock.try_lock());
interrupt_spin_lock.unlock();
}
}
PW_SYNC_ADD_BORROWABLE_LOCK_NAMED_TESTS(BorrowableInterruptSpinLock,
InterruptSpinLock);
TEST(VirtualInterruptSpinLock, LockUnlock) {
pw::sync::VirtualInterruptSpinLock interrupt_spin_lock;
interrupt_spin_lock.lock();
// TODO: b/235284163 - Ensure other cores fail to lock when its locked.
// EXPECT_FALSE(interrupt_spin_lock.try_lock());
interrupt_spin_lock.unlock();
}
VirtualInterruptSpinLock static_virtual_interrupt_spin_lock;
TEST(VirtualInterruptSpinLock, LockUnlockStatic) {
static_virtual_interrupt_spin_lock.lock();
// TODO: b/235284163 - Ensure other cores fail to lock when its locked.
// EXPECT_FALSE(static_virtual_interrupt_spin_lock.try_lock());
static_virtual_interrupt_spin_lock.unlock();
}
PW_SYNC_ADD_BORROWABLE_LOCK_NAMED_TESTS(BorrowableVirtualInterruptSpinLock,
VirtualInterruptSpinLock);
TEST(InterruptSpinLock, LockUnlockInC) {
pw::sync::InterruptSpinLock interrupt_spin_lock;
pw_sync_InterruptSpinLock_CallLock(&interrupt_spin_lock);
pw_sync_InterruptSpinLock_CallUnlock(&interrupt_spin_lock);
}
TEST(InterruptSpinLock, TryLockUnlockInC) {
pw::sync::InterruptSpinLock interrupt_spin_lock;
ASSERT_TRUE(pw_sync_InterruptSpinLock_CallTryLock(&interrupt_spin_lock));
// TODO: b/235284163 - Ensure other cores fail to lock when its locked.
// EXPECT_FALSE(pw_sync_InterruptSpinLock_CallTryLock(&interrupt_spin_lock));
pw_sync_InterruptSpinLock_CallUnlock(&interrupt_spin_lock);
}
} // namespace
} // namespace pw::sync
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