92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_NATIVE_LIBRARY_H_
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#define BASE_NATIVE_LIBRARY_H_
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// This file defines a cross-platform "NativeLibrary" type which represents
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// a loadable module.
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#include "base/base_export.h"
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#include "build/build_config.h"
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#if defined(OS_WIN)
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#include <windows.h>
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#elif defined(OS_MACOSX)
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#import <CoreFoundation/CoreFoundation.h>
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#endif // OS_*
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#include "base/strings/string16.h"
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// Macro useful for writing cross-platform function pointers.
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#if defined(OS_WIN) && !defined(CDECL)
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#define CDECL __cdecl
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#else
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#define CDECL
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#endif
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namespace base {
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class FilePath;
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#if defined(OS_WIN)
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typedef HMODULE NativeLibrary;
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#elif defined(OS_MACOSX)
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enum NativeLibraryType {
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BUNDLE,
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DYNAMIC_LIB
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};
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enum NativeLibraryObjCStatus {
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OBJC_UNKNOWN,
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OBJC_PRESENT,
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OBJC_NOT_PRESENT,
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};
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struct NativeLibraryStruct {
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NativeLibraryType type;
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CFBundleRefNum bundle_resource_ref;
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NativeLibraryObjCStatus objc_status;
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union {
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CFBundleRef bundle;
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void* dylib;
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};
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};
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typedef NativeLibraryStruct* NativeLibrary;
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#elif defined(OS_POSIX)
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typedef void* NativeLibrary;
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#endif // OS_*
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// Loads a native library from disk. Release it with UnloadNativeLibrary when
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// you're done. Returns NULL on failure.
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// If |err| is not NULL, it may be filled in with an error message on
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// error.
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BASE_EXPORT NativeLibrary LoadNativeLibrary(const FilePath& library_path,
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std::string* error);
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#if defined(OS_WIN)
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// Loads a native library from disk. Release it with UnloadNativeLibrary when
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// you're done.
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// This function retrieves the LoadLibrary function exported from kernel32.dll
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// and calls it instead of directly calling the LoadLibrary function via the
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// import table.
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BASE_EXPORT NativeLibrary LoadNativeLibraryDynamically(
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const FilePath& library_path);
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#endif // OS_WIN
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// Unloads a native library.
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BASE_EXPORT void UnloadNativeLibrary(NativeLibrary library);
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// Gets a function pointer from a native library.
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BASE_EXPORT void* GetFunctionPointerFromNativeLibrary(NativeLibrary library,
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const char* name);
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// Returns the full platform specific name for a native library.
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// For example:
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// "mylib" returns "mylib.dll" on Windows, "libmylib.so" on Linux,
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// "mylib.dylib" on Mac.
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BASE_EXPORT string16 GetNativeLibraryName(const string16& name);
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} // namespace base
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#endif // BASE_NATIVE_LIBRARY_H_
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