1 // Copyright 2023 The Pigweed Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not 4 // use this file except in compliance with the License. You may obtain a copy of 5 // the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12 // License for the specific language governing permissions and limitations under 13 // the License. 14 #pragma once 15 16 #include "pw_sync/interrupt_spin_lock.h" 17 18 namespace pw::sync { 19 InterruptSpinLock()20constexpr InterruptSpinLock::InterruptSpinLock() 21 : native_type_{.lock = {}, .locked = false, .key = {0}} {} 22 try_lock()23inline bool InterruptSpinLock::try_lock() { 24 // This backend will spin the current processor until the deadlock is 25 // available and does not implement a 'try' mechanism. Recursive locking is 26 // already detected by lock(). 27 lock(); 28 return true; 29 } 30 31 inline InterruptSpinLock::native_handle_type native_handle()32InterruptSpinLock::native_handle() { 33 return native_type_; 34 } 35 36 } // namespace pw::sync 37