src/backend/port/dynloader/osf.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * osf.h
   4  *        prototypes for OSF/1-specific routines
   5  *
   6  *
   7  * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
   8  * Portions Copyright (c) 1994, Regents of the University of California
   9  *
  10  * $PostgreSQL$
  11  *
  12  *-------------------------------------------------------------------------
  13  */
  14
  15 #ifndef PORT_PROTOS_H
  16 #define PORT_PROTOS_H
  17
  18 #include <dlfcn.h>
  19 #include "utils/dynamic_loader.h"
  20
  21 /*
  22  * Dynamic Loader on Alpha OSF/1.x
  23  *
  24  * this dynamic loader uses the system dynamic loading interface for shared
  25  * libraries (ie. dlopen/dlsym/dlclose). The user must specify a shared
  26  * library as the file to be dynamically loaded.
  27  */
  28
  29 /*
  30  * In some older systems, the RTLD_NOW flag isn't defined and the mode
  31  * argument to dlopen must always be 1.  The RTLD_GLOBAL flag is wanted
  32  * if available, but it doesn't exist everywhere.
  33  * If it doesn't exist, set it to 0 so it has no effect.
  34  */
  35 #ifndef RTLD_NOW
  36 #define RTLD_NOW 1
  37 #endif
  38 #ifndef RTLD_GLOBAL
  39 #define RTLD_GLOBAL 0
  40 #endif
  41
  42 #define  pg_dlopen(f)   dlopen((f), RTLD_NOW | RTLD_GLOBAL)
  43 #define  pg_dlsym(h, f) ((PGFunction) dlsym(h, f))
  44 #define  pg_dlclose(h)  dlclose(h)
  45 #define  pg_dlerror()   dlerror()
  46
  47 #endif   /* PORT_PROTOS_H */