1 files changed, 75 insertions, 0 deletions
diff --git a/libartbase/base/globals_unix.cc b/libartbase/base/globals_unix.cc
new file mode 100644
index 0000000000..0d2e8a9104
--- /dev/null
+++ b/libartbase/base/globals_unix.cc
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2019 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.
+ */
+
+#include <android-base/logging.h>
+
+#include <dlfcn.h>
+
+#include "globals.h"
+
+namespace art {
+
+#ifdef __APPLE__
+// dlopen(3) on Linux with just an SO name will search the already
+// opened libraries. On Darwin, we need dlopen(3) needs the SO name
+// qualified with it's path (if the SO is not on the search path). Use
+// linker path when compiling app. See man pages for dlopen(3) and
+// dlyd(1).
+  static constexpr const char kLibArtBaseDebug[] = "@rpath/libartbased.dylib";
+  static constexpr const char kLibArtBaseRelease[] = "@rpath/libartbase.dylib";
+#else
+  static constexpr const char kLibArtBaseDebug[] = "libartbased.so";
+  static constexpr const char kLibArtBaseRelease[] = "libartbase.so";
+#endif  // __APPLE__
+
+// Check that we have not loaded both debug and release version of libartbase at the same time.
+//
+// This can be a cascade problem originating from a call to
+// LoadLibdexfileExternal in libdexfile_support: If it was called before any ART
+// libraries were loaded it will default to the non-debug version, which can
+// then clash with a later load of the debug version.
+static struct CheckLoadedBuild {
+  CheckLoadedBuild() {
+    bool debug_build_loaded = (dlopen(kLibArtBaseDebug, RTLD_NOW | RTLD_NOLOAD) != nullptr);
+    bool release_build_loaded = (dlopen(kLibArtBaseRelease, RTLD_NOW | RTLD_NOLOAD) != nullptr);
+    // TODO: The exit calls below are needed as CHECK would cause recursive backtracing. Fix it.
+    if (!(debug_build_loaded || release_build_loaded)) {
+      LOG(FATAL_WITHOUT_ABORT) << "Failed to dlopen "
+                               << kLibArtBaseDebug
+                               << " or "
+                               << kLibArtBaseRelease;
+      exit(1);
+    }
+    if (kIsDebugBuild && release_build_loaded) {
+      LOG(FATAL_WITHOUT_ABORT) << "Loading "
+                               << kLibArtBaseDebug
+                               << " while "
+                               << kLibArtBaseRelease
+                               << " is already loaded";
+      exit(1);
+    }
+    if (!kIsDebugBuild && debug_build_loaded) {
+      LOG(FATAL_WITHOUT_ABORT) << "Loading "
+                               << kLibArtBaseRelease
+                               << " while "
+                               << kLibArtBaseDebug
+                               << " is already loaded";
+      exit(1);
+    }
+  }
+} g_check_loaded_build;
+
+}  // namespace art