/cln-1.3.2/include/cln/modules.h

 1// Macros for correct module ordering.
 2
 3#ifndef _CL_MODULES_H
 4#define _CL_MODULES_H
 5
 6// global constructor/destructor naming.
 7#include "cln/config.h"
 8
 9// Concatenation of macroexpanded tokens.
10// Equivalent to CL_CONCAT in src/base/cl_macros.h which we do not want
11// to expose, however.
12#define CL_CONCATENATE_(xxx,yyy)  xxx##yyy
13#define CL_CONCATENATE(xxx,yyy)  CL_CONCATENATE_(xxx,yyy)
14
15// Sometimes a link time dependency is needed, but without requirements
16// on initialization order.
17//
18// CL_FORCE_LINK(dummy,external_variable)
19// forces a link time reference to the external_variable.
20#include <cstdlib>
21#if 0
22// This definition does not work.  It gets optimized away by g++ 3.1.
23#define CL_FORCE_LINK(dummy,external_variable) \
24  static const void* const dummy[] = { &dummy, &external_variable };
25#else
26#define CL_FORCE_LINK(dummy,external_variable) \
27  static const								\
28  struct dummy {							\
29    inline dummy () {							\
30      if ((void*) &external_variable == (void*) this)			\
31        abort();							\
32    }									\
33  }									\
34  CL_CONCATENATE(dummy,_instance);
35#endif
36
37#endif /* _CL_MODULES_H */