pw_sync_zephyr/interrupt_spin_lock.cc

// Copyright 2023 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 "pw_sync/interrupt_spin_lock.h"

#include <zephyr/spinlock.h>

#include "pw_assert/check.h"

namespace pw::sync {

void InterruptSpinLock::lock() {
  PW_DCHECK(!native_type_.locked,
            "Recursive InterruptSpinLock::lock() detected");
  native_type_.key = k_spin_lock(&native_type_.lock);
  native_type_.locked = true;
}

void InterruptSpinLock::unlock() {
  native_type_.locked = false;
  k_spin_unlock(&native_type_.lock, native_type_.key);
}

}  // namespace pw::sync