Repo created

TMessagesProj/jni/voip/webrtc/base/native_library_posix.cc

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+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/native_library.h"
+
+#include <dlfcn.h>
+
+#include "base/files/file_path.h"
+#include "base/logging.h"
+#include "base/strings/string_util.h"
+#include "base/strings/utf_string_conversions.h"
+#include "base/threading/scoped_blocking_call.h"
+
+namespace base {
+
+std::string NativeLibraryLoadError::ToString() const {
+  return message;
+}
+
+NativeLibrary LoadNativeLibraryWithOptions(const FilePath& library_path,
+                                           const NativeLibraryOptions& options,
+                                           NativeLibraryLoadError* error) {
+  // dlopen() opens the file off disk.
+  ScopedBlockingCall scoped_blocking_call(FROM_HERE, BlockingType::MAY_BLOCK);
+
+  // We deliberately do not use RTLD_DEEPBIND by default.  For the history why,
+  // please refer to the bug tracker.  Some useful bug reports to read include:
+  // http://crbug.com/17943, http://crbug.com/17557, http://crbug.com/36892,
+  // and http://crbug.com/40794.
+  int flags = RTLD_LAZY;
+#if defined(OS_ANDROID) || !defined(RTLD_DEEPBIND)
+  // Certain platforms don't define RTLD_DEEPBIND. Android dlopen() requires
+  // further investigation, as it might vary across versions. Crash here to
+  // warn developers that they're trying to rely on uncertain behavior.
+  CHECK(!options.prefer_own_symbols);
+#else
+  if (options.prefer_own_symbols)
+    flags |= RTLD_DEEPBIND;
+#endif
+  void* dl = dlopen(library_path.value().c_str(), flags);
+  if (!dl && error)
+    error->message = dlerror();
+
+  return dl;
+}
+
+void UnloadNativeLibrary(NativeLibrary library) {
+  int ret = dlclose(library);
+  if (ret < 0) {
+    DLOG(ERROR) << "dlclose failed: " << dlerror();
+    NOTREACHED();
+  }
+}
+
+void* GetFunctionPointerFromNativeLibrary(NativeLibrary library,
+                                          StringPiece name) {
+  return dlsym(library, name.data());
+}
+
+std::string GetNativeLibraryName(StringPiece name) {
+  DCHECK(IsStringASCII(name));
+  return "lib" + name.as_string() + ".so";
+}
+
+std::string GetLoadableModuleName(StringPiece name) {
+  return GetNativeLibraryName(name);
+}
+
+}  // namespace base