1 /* 2 * Copyright (C) 2021 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 #ifndef ART_LIBARTBASE_BASE_FAST_EXIT_H_ 18 #define ART_LIBARTBASE_BASE_FAST_EXIT_H_ 19 20 // Header-only definition of `art::FastExit`. 21 // 22 // Ideally, this routine should be declared in `base/os.h` and defined in 23 // `base/os_linux.cc`, but as `libartbase` is not linked (directly) with 24 // `dalvikvm`, we would not be able to easily use `art::FastExit` in 25 // `dex2oat`. Use a header-only approach and define `art::FastExit` in its own 26 // file for clarity. 27 28 #include <base/macros.h> 29 30 namespace art { 31 32 #ifdef __ANDROID_CLANG_COVERAGE__ 33 static constexpr bool kAndroidClangCoverage = true; 34 #else 35 static constexpr bool kAndroidClangCoverage = false; 36 #endif 37 38 // Terminate program without completely cleaning the resources (e.g. without 39 // calling destructors), unless ART is built with Clang (native) code coverage 40 // instrumentation; in that case, exit normally to allow LLVM's code coverage 41 // profile dumping routine (`__llvm_profile_write_file`), registered via 42 // `atexit` in Android when Clang instrumentation is enabled, to be called 43 // before terminating the program. 44 NO_RETURN inline void FastExit(int exit_code) { 45 if (kAndroidClangCoverage) { 46 exit(exit_code); 47 } else { 48 _exit(exit_code); 49 } 50 } 51 52 } // namespace art 53 54 #endif // ART_LIBARTBASE_BASE_FAST_EXIT_H_ 55