third_party/perfetto/include/perfetto/public/abi/export.h

/*
 * Copyright (C) 2022 The Android Open Source Project
 *
 * 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
 *
 *      http://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.
 */

#ifndef INCLUDE_PERFETTO_PUBLIC_ABI_EXPORT_H_
#define INCLUDE_PERFETTO_PUBLIC_ABI_EXPORT_H_

#ifdef _WIN32
#define PERFETTO_INTERNAL_DLL_EXPORT __declspec(dllexport)
#define PERFETTO_INTERNAL_DLL_IMPORT __declspec(dllimport)
#else
#define PERFETTO_INTERNAL_DLL_EXPORT __attribute__((visibility("default")))
#define PERFETTO_INTERNAL_DLL_IMPORT
#endif

// PERFETTO_SDK_EXPORT: Exports a symbol from the perfetto SDK shared library.
//
// This is controlled by two defines (that likely come from the compiler command
// line):
// * PERFETTO_SDK_DISABLE_SHLIB_EXPORT: If this is defined, no export
//   annotations are added. This might be useful when static linking.
// * PERFETTO_SDK_SHLIB_IMPLEMENTATION: This must be defined when compiling the
//   shared library itself (in order to export the symbols), but must be
//   undefined when compiling objects that use the shared library (in order to
//   import the symbols).
#if !defined(PERFETTO_SDK_DISABLE_SHLIB_EXPORT)
#if defined(PERFETTO_SHLIB_SDK_IMPLEMENTATION)
#define PERFETTO_SDK_EXPORT PERFETTO_INTERNAL_DLL_EXPORT
#else
#define PERFETTO_SDK_EXPORT PERFETTO_INTERNAL_DLL_IMPORT
#endif
#else  // defined(PERFETTO_SDK_DISABLE_SHLIB_EXPORT)
#define PERFETTO_SDK_EXPORT
#endif  // defined(PERFETTO_SDK_DISABLE_SHLIB_EXPORT)

#endif  // INCLUDE_PERFETTO_PUBLIC_ABI_EXPORT_H_