ACE/ace/os_include/os_dlfcn.h

   1 // -*- C++ -*-
   2
   3 //=============================================================================
   4 /**
   5  *  @file    os_dlfcn.h
   6  *
   7  *  dynamic linking
   8  *
   9  *  @author Don Hinton <dhinton@dresystems.com>
  10  *  @author This code was originally in various places including ace/OS.h.
  11  */
  12 //=============================================================================
  13
  14 #ifndef ACE_OS_INCLUDE_OS_DLFCN_H
  15 #define ACE_OS_INCLUDE_OS_DLFCN_H
  16
  17 #include /**/ "ace/pre.h"
  18
  19 #include /**/ "ace/config-all.h"
  20
  21 #if !defined (ACE_LACKS_PRAGMA_ONCE)
  22 # pragma once
  23 #endif /* ACE_LACKS_PRAGMA_ONCE */
  24
  25 #if !defined (ACE_LACKS_DLFCN_H)
  26 #  include /**/ <dlfcn.h>
  27 #endif /* !ACE_LACKS_DLFCN_H */
  28
  29 #if defined (ACE_VXWORKS) && !defined (__RTP__)
  30 #  include /**/ <loadLib.h> /* for module load */
  31 #  include /**/ <unldLib.h> /* for module unload */
  32 #  include /**/ <symLib.h> /* for findSymbol  */
  33 #  include /**/ <sysSymTbl.h> /* for global symbol table */
  34 #endif /* ACE_VXWORKS */
  35
  36 // Place all additions (especially function declarations) within extern "C" {}
  37 #ifdef __cplusplus
  38 extern "C"
  39 {
  40 #endif /* __cplusplus */
  41
  42 /* Set the proper handle type for dynamically-loaded libraries. */
  43 /* Also define a default 'mode' for loading a library - the names and values */
  44 /* differ between OSes, so if you write code that uses the mode, be careful */
  45 /* of the platform differences. */
  46 #if defined (ACE_WIN32)
  47    // Dynamic loading-related types - used for dlopen and family.
  48    typedef HINSTANCE ACE_SHLIB_HANDLE;
  49 #  if !defined (ACE_SHLIB_INVALID_HANDLE)
  50 #    define ACE_SHLIB_INVALID_HANDLE 0
  51 #  endif /* ACE_SHLIB_INVALID_HANDLE */
  52 #  if !defined (ACE_DEFAULT_SHLIB_MODE)
  53 #    define ACE_DEFAULT_SHLIB_MODE 0
  54 #  endif /* ACE_DEFAULT_SHLIB_MODE */
  55 #elif defined (ACE_HAS_SVR4_DYNAMIC_LINKING)
  56    typedef void *ACE_SHLIB_HANDLE;
  57 #  if !defined (ACE_SHLIB_INVALID_HANDLE)
  58 #    define ACE_SHLIB_INVALID_HANDLE 0
  59 #  endif /* ACE_SHLIB_INVALID_HANDLE */
  60    // This is needed to for dynamic_cast to work properly on objects passed to
  61    // libraries.
  62 #  if !defined (ACE_DEFAULT_SHLIB_MODE)
  63 #    define ACE_DEFAULT_SHLIB_MODE RTLD_LAZY | RTLD_GLOBAL
  64 #  endif
  65 #else /* !ACE_WIN32 && !ACE_HAS_SVR4_DYNAMIC_LINKING */
  66    typedef void *ACE_SHLIB_HANDLE;
  67 #  if !defined (ACE_SHLIB_INVALID_HANDLE)
  68 #    define ACE_SHLIB_INVALID_HANDLE 0
  69 #  endif /* ACE_SHLIB_INVALID_HANDLE */
  70 #  if !defined (ACE_DEFAULT_SHLIB_MODE)
  71 #    define ACE_DEFAULT_SHLIB_MODE RTLD_LAZY
  72 #  endif /* ACE_DEFAULT_SHLIB_MODE */
  73 #endif /* ACE_WIN32 */
  74
  75 #if !defined (RTLD_LAZY)
  76 #define RTLD_LAZY 1
  77 #endif /* !RTLD_LAZY */
  78
  79 #if !defined (RTLD_NOW)
  80 #define RTLD_NOW 2
  81 #endif /* !RTLD_NOW */
  82
  83 #if !defined (RTLD_GLOBAL)
  84 #define RTLD_GLOBAL 3
  85 #endif /* !RTLD_GLOBAL */
  86
  87 #ifdef __cplusplus
  88 }
  89 #endif /* __cplusplus */
  90
  91 #include /**/ "ace/post.h"
  92 #endif /* ACE_OS_INCLUDE_OS_DLFCN_H */