1// Copyright (c) 2005, Google Inc.
2// All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are
6// met:
7//
8//     * Redistributions of source code must retain the above copyright
9// notice, this list of conditions and the following disclaimer.
10//     * Redistributions in binary form must reproduce the above
11// copyright notice, this list of conditions and the following disclaimer
12// in the documentation and/or other materials provided with the
13// distribution.
14//     * Neither the name of Google Inc. nor the names of its
15// contributors may be used to endorse or promote products derived from
16// this software without specific prior written permission.
17//
18// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29
30// ---
31// Author: Jacob Hoffman-Andrews
32
33#ifndef _GOOGLEINIT_H
34#define _GOOGLEINIT_H
35
36#include "base/logging.h"
37
38class GoogleInitializer {
39 public:
40  typedef void (*VoidFunction)(void);
41  GoogleInitializer(const char* name, VoidFunction ctor, VoidFunction dtor)
42      : name_(name), destructor_(dtor) {
43    RAW_VLOG(10, "<GoogleModuleObject> constructing: %s\n", name_);
44    if (ctor)
45      ctor();
46  }
47  ~GoogleInitializer() {
48    RAW_VLOG(10, "<GoogleModuleObject> destroying: %s\n", name_);
49    if (destructor_)
50      destructor_();
51  }
52
53 private:
54  const char* const name_;
55  const VoidFunction destructor_;
56};
57
58#define REGISTER_MODULE_INITIALIZER(name, body)                 \
59  namespace {                                                   \
60    static void google_init_module_##name () { body; }          \
61    GoogleInitializer google_initializer_module_##name(#name,   \
62            google_init_module_##name, NULL);                   \
63  }
64
65#define REGISTER_MODULE_DESTRUCTOR(name, body)                  \
66  namespace {                                                   \
67    static void google_destruct_module_##name () { body; }      \
68    GoogleInitializer google_destructor_module_##name(#name,    \
69            NULL, google_destruct_module_##name);               \
70  }
71
72
73#endif /* _GOOGLEINIT_H */
74