src/backend/port/dynloader/dgux.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * dgux.h
   4  *
   5  * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
   6  * Portions Copyright (c) 1994, Regents of the University of California
   7  *
   8  * $PostgreSQL$
   9  *
  10  *-------------------------------------------------------------------------
  11  */
  12 #ifndef PORT_PROTOS_H
  13 #define PORT_PROTOS_H
  14
  15 #include <dlfcn.h>
  16 #include "utils/dynamic_loader.h"
  17
  18 /*
  19  * Dynamic Loader on DG/UX.
  20  *
  21  * this dynamic loader uses the system dynamic loading interface for shared
  22  * libraries (ie. dlopen/dlsym/dlclose). The user must specify a shared
  23  * library as the file to be dynamically loaded.
  24  */
  25
  26 /*
  27  * In some older systems, the RTLD_NOW flag isn't defined and the mode
  28  * argument to dlopen must always be 1.  The RTLD_GLOBAL flag is wanted
  29  * if available, but it doesn't exist everywhere.
  30  * If it doesn't exist, set it to 0 so it has no effect.
  31  */
  32 #ifndef RTLD_NOW
  33 #define RTLD_NOW 1
  34 #endif
  35 #ifndef RTLD_GLOBAL
  36 #define RTLD_GLOBAL 0
  37 #endif
  38
  39 #define pg_dlopen(f)    dlopen((f), RTLD_NOW | RTLD_GLOBAL)
  40 #define pg_dlsym                dlsym
  41 #define pg_dlclose              dlclose
  42 #define pg_dlerror              dlerror
  43
  44 #endif   /* PORT_PROTOS_H */