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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include "chre/apps/apps.h"
     18 #include "chre/core/event_loop_manager.h"
     19 #include "chre/core/static_nanoapps.h"
     20 #include "chre/util/macros.h"
     21 
     22 namespace chre {
     23 
     24 // The CHRE build variant can supply this macro to override the default list of
     25 // static nanoapps. Most production variants will supply this macro as these
     26 // nanoapps are mostly intended for testing and evaluation purposes. This list
     27 // is supplied empty to ensure that the symbol is avilable for platforms with
     28 // no static nanoapps.
     29 #ifndef CHRE_VARIANT_SUPPLIES_STATIC_NANOAPP_LIST
     30 
     31 //! The default list of static nanoapps to load.
     32 const StaticNanoappInitFunction kStaticNanoappList[] = {};
     33 
     34 //! The size of the default static nanoapp list.
     35 const size_t kStaticNanoappCount = ARRAY_SIZE(kStaticNanoappList);
     36 
     37 #endif  // CHRE_VARIANT_SUPPLIES_STATIC_NANOAPP_LIST
     38 
     39 void loadStaticNanoapps() {
     40   // Compare with zero to allow the compiler to optimize away the loop.
     41   // Tautological comparisons are not warnings when comparing a const with
     42   // another const.
     43   if (kStaticNanoappCount > 0) {
     44     // Cast the kStaticNanoappCount to size_t to avoid tautological comparison
     45     // warnings when the kStaticNanoappCount is zero.
     46     for (size_t i = 0; i < reinterpret_cast<size_t>(kStaticNanoappCount); i++) {
     47       UniquePtr<Nanoapp> nanoapp = kStaticNanoappList[i]();
     48       EventLoopManagerSingleton::get()->getEventLoop().startNanoapp(nanoapp);
     49     }
     50   }
     51 }
     52 
     53 }  // namespace chre
     54