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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 
38 class GoogleInitializer {
39  public:
40   typedef void (*VoidFunction)(void);
GoogleInitializer(const char * name,VoidFunction ctor,VoidFunction dtor)41   GoogleInitializer(const char* name, VoidFunction ctor, VoidFunction dtor)
42       : /* name_(name), */ destructor_(dtor) {
43     // TODO(dmikurube): Re-enable the commented-out code.
44     // We commented out the following line, since Chromium does not have the
45     // proper includes to log using these macros.
46     //
47     // Commended-out code:
48     //   RAW_VLOG(10, "<GoogleModuleObject> constructing: %s\n", name_);
49     //
50     // This googleinit.h is included from out of third_party/tcmalloc, such as
51     // net/tools/flip_server/balsa_headers.cc.
52     // "base/logging.h" (included above) indicates Chromium's base/logging.h
53     // when this googleinit.h is included from out of third_party/tcmalloc.
54     if (ctor)
55       ctor();
56   }
~GoogleInitializer()57   ~GoogleInitializer() {
58     // TODO(dmikurube): Re-enable the commented-out code.
59     // The same as above.  The following line is commented out in Chromium.
60     //
61     // Commended-out code:
62     //   RAW_VLOG(10, "<GoogleModuleObject> destroying: %s\n", name_);
63     if (destructor_)
64       destructor_();
65   }
66 
67  private:
68   // TODO(dmikurube): Re-enable the commented-out code.
69   // const char* const name_;
70   const VoidFunction destructor_;
71 };
72 
73 #define REGISTER_MODULE_INITIALIZER(name, body)                 \
74   namespace {                                                   \
75     static void google_init_module_##name () { body; }          \
76     GoogleInitializer google_initializer_module_##name(#name,   \
77             google_init_module_##name, NULL);                   \
78   }
79 
80 #define REGISTER_MODULE_DESTRUCTOR(name, body)                  \
81   namespace {                                                   \
82     static void google_destruct_module_##name () { body; }      \
83     GoogleInitializer google_destructor_module_##name(#name,    \
84             NULL, google_destruct_module_##name);               \
85   }
86 
87 
88 #endif /* _GOOGLEINIT_H */
89