1 // Copyright 2021 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 "FreeRTOS.h" 17 #include "pw_polyfill/language_feature_macros.h" 18 #include "pw_sync/interrupt_spin_lock.h" 19 #include "pw_sync/lock_annotations.h" 20 #include "task.h" 21 22 namespace pw::sync::backend { 23 24 struct NativeThreadNotification { 25 TaskHandle_t blocked_thread PW_GUARDED_BY(shared_spin_lock); 26 bool notified PW_GUARDED_BY(shared_spin_lock); 27 // We use a global ISL for all thread notifications because these backends 28 // only support uniprocessor targets and ergo we reduce the memory cost for 29 // all ISL instances without any risk of spin contention between different 30 // instances. 31 PW_CONSTINIT inline static InterruptSpinLock shared_spin_lock = {}; 32 }; 33 using NativeThreadNotificationHandle = NativeThreadNotification&; 34 35 } // namespace pw::sync::backend 36