native_library.h revision 3345a6884c488ff3a535c2c9acdd33d74b37e311 
1// Copyright (c) 2009 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef BASE_NATIVE_LIBRARY_H_
6#define BASE_NATIVE_LIBRARY_H_
7#pragma once
8
9// This file defines a cross-platform "NativeLibrary" type which represents
10// a loadable module.
11
12#include "build/build_config.h"
13
14#if defined(OS_WIN)
15#include <windows.h>
16#elif defined(OS_MACOSX)
17#import <Carbon/Carbon.h>
18#endif  // OS_*
19
20#include "base/string16.h"
21
22// Macro usefull for writing cross-platform function pointers.
23#if defined(OS_WIN) && !defined(CDECL)
24#define CDECL __cdecl
25#else
26#define CDECL
27#endif
28
29class FilePath;
30
31namespace base {
32
33#if defined(OS_WIN)
34typedef HMODULE NativeLibrary;
35#elif defined(OS_MACOSX)
36enum NativeLibraryType {
37  BUNDLE,
38  DYNAMIC_LIB
39};
40struct NativeLibraryStruct {
41  NativeLibraryType type;
42  CFBundleRefNum bundle_resource_ref;
43  union {
44    CFBundleRef bundle;
45    void* dylib;
46  };
47};
48typedef NativeLibraryStruct* NativeLibrary;
49#elif defined(OS_POSIX)
50typedef void* NativeLibrary;
51#endif  // OS_*
52
53// Loads a native library from disk.  Release it with UnloadNativeLibrary when
54// you're done.
55NativeLibrary LoadNativeLibrary(const FilePath& library_path);
56
57// Unloads a native library.
58void UnloadNativeLibrary(NativeLibrary library);
59
60// Gets a function pointer from a native library.
61void* GetFunctionPointerFromNativeLibrary(NativeLibrary library,
62                                          const char* name);
63
64// Returns the full platform specific name for a native library.
65// For example:
66// "mylib" returns "mylib.dll" on Windows, "libmylib.so" on Linux,
67// "mylib.dylib" on Mac.
68string16 GetNativeLibraryName(const string16& name);
69
70}  // namespace base
71
72#endif  // BASE_NATIVE_LIBRARY_H_
73