1 /* 2 * Copyright (C) 2019 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 <android-base/logging.h> 18 19 #include <dlfcn.h> 20 21 #include "globals.h" 22 23 namespace art { 24 25 #ifndef ART_STATIC_LIBARTBASE 26 27 #ifdef __APPLE__ 28 // dlopen(3) on Linux with just an SO name will search the already 29 // opened libraries. On Darwin, we need dlopen(3) needs the SO name 30 // qualified with it's path (if the SO is not on the search path). Use 31 // linker path when compiling app. See man pages for dlopen(3) and 32 // dlyd(1). 33 static constexpr const char kLibArtBaseDebug[] = "@rpath/libartbased.dylib"; 34 static constexpr const char kLibArtBaseRelease[] = "@rpath/libartbase.dylib"; 35 #else 36 static constexpr const char kLibArtBaseDebug[] = "libartbased.so"; 37 static constexpr const char kLibArtBaseRelease[] = "libartbase.so"; 38 #endif // __APPLE__ 39 40 // Check that we have not loaded both debug and release version of libartbase at the same time. 41 // 42 // This can be a cascade problem originating from a call to 43 // LoadLibdexfileExternal in libdexfile_support: If it was called before any ART 44 // libraries were loaded it will default to the non-debug version, which can 45 // then clash with a later load of the debug version. 46 static struct CheckLoadedBuild { CheckLoadedBuildart::CheckLoadedBuild47 CheckLoadedBuild() { 48 bool debug_build_loaded = (dlopen(kLibArtBaseDebug, RTLD_NOW | RTLD_NOLOAD) != nullptr); 49 bool release_build_loaded = (dlopen(kLibArtBaseRelease, RTLD_NOW | RTLD_NOLOAD) != nullptr); 50 // TODO: The exit calls below are needed as CHECK would cause recursive backtracing. Fix it. 51 if (!(debug_build_loaded || release_build_loaded)) { 52 LOG(FATAL_WITHOUT_ABORT) << "Failed to dlopen " 53 << kLibArtBaseDebug 54 << " or " 55 << kLibArtBaseRelease; 56 exit(1); 57 } 58 if (kIsDebugBuild && release_build_loaded) { 59 LOG(FATAL_WITHOUT_ABORT) << "Loading " 60 << kLibArtBaseDebug 61 << " while " 62 << kLibArtBaseRelease 63 << " is already loaded"; 64 exit(1); 65 } 66 if (!kIsDebugBuild && debug_build_loaded) { 67 LOG(FATAL_WITHOUT_ABORT) << "Loading " 68 << kLibArtBaseRelease 69 << " while " 70 << kLibArtBaseDebug 71 << " is already loaded"; 72 exit(1); 73 } 74 } 75 } g_check_loaded_build; 76 77 #endif // !ART_STATIC_LIBARTBASE 78 79 } // namespace art 80