1 /* 2 * Copyright (c) 2021-2023 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://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, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 #ifndef RENDER_SERVICE_CLIENT_CORE_COMMON_RS_MACROS_H 16 #define RENDER_SERVICE_CLIENT_CORE_COMMON_RS_MACROS_H 17 18 namespace OHOS { 19 namespace Rosen { 20 /** about export template (most at _WIN32 platform) 21 * Sometimes other module maybe use instantiated template classes or instantiate their own template class. 22 * for example: arkui will use RSRenderAnimatableProperty<float> and instantiate the template 23 * with type "NG::ColorBlend", so we need export instantiated template classes but cannot export 24 * template itself. Because if you RSB_EXPORT the template, arkui will think the symbol 25 * RSRenderAnimatableProperty<NG::ColorBlend> is importing from other module, 26 * linker then raise a link problem. 27 * 28 * So we should use RSB_EXPORT_TMP and use extern template & template to tell arkui that there are many 29 * instantiated template classes, you don't need instantiate again. 30 * 31 * correct way: 32 * base view: 33 * EXPORT RSRenderAnimatableProperty<T> 34 * extern template class RSRenderAnimatableProperty<float>; 35 * (in cpp) template class RSRenderAnimatableProperty<float>; 36 * arkui view: 37 * RSRenderAnimatableProperty<T> 38 * extern template class RSRenderAnimatableProperty<float>; 39 */ 40 41 #ifdef _WIN32 42 #define RS_EXPORT __attribute__((dllexport)) 43 #define RS_IMPORT __attribute__((dllimport)) 44 #else 45 #define RS_EXPORT __attribute__((visibility("default"))) 46 #define RS_IMPORT __attribute__((visibility("default"))) 47 #endif 48 49 #ifdef MODULE_RSB 50 #define RSB_EXPORT RS_EXPORT 51 #define RSB_EXPORT_TMP RS_EXPORT 52 #else 53 #define RSB_EXPORT RS_IMPORT 54 #define RSB_EXPORT_TMP 55 #endif 56 57 #ifdef MODULE_RSC 58 #define RSC_EXPORT RS_EXPORT 59 #define RSC_EXPORT_TMP RS_EXPORT 60 #else 61 #define RSC_EXPORT RS_IMPORT 62 #define RSC_EXPORT_TMP 63 #endif 64 65 #ifdef __gnu_linux__ 66 #define __libcpp_erase_if_container __detail::__erase_nodes_if 67 #endif 68 } // namespace Rosen 69 } // namespace OHOS 70 #endif // RENDER_SERVICE_CLIENT_CORE_COMMON_RS_MACROS_H 71