Logo Search packages:      
Sourcecode: postgresql-8.4 version File versions

hpux.c

/*-------------------------------------------------------------------------
 *
 * dynloader.c
 *      dynamic loader for HP-UX using the shared library mechanism
 *
 * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 *
 * IDENTIFICATION
 *      $PostgreSQL$
 *
 *    NOTES
 *          all functions are defined here -- it's impossible to trace the
 *          shl_* routines from the bundled HP-UX debugger.
 *
 *-------------------------------------------------------------------------
 */
#include "postgres.h"

/* System includes */
#include <a.out.h>
#include <dl.h>

#include "dynloader.h"
#include "utils/dynamic_loader.h"

void *
pg_dlopen(char *filename)
{
      /*
       * Use BIND_IMMEDIATE so that undefined symbols cause a failure return
       * from shl_load(), rather than an abort() later on when we attempt to
       * call the library!
       */
      shl_t       handle = shl_load(filename,
                                                BIND_IMMEDIATE | BIND_VERBOSE | DYNAMIC_PATH,
                                                  0L);

      return (void *) handle;
}

PGFunction
pg_dlsym(void *handle, char *funcname)
{
      PGFunction  f;

      if (shl_findsym((shl_t *) & handle, funcname, TYPE_PROCEDURE, &f) == -1)
            f = (PGFunction) NULL;
      return f;
}

void
pg_dlclose(void *handle)
{
      shl_unload((shl_t) handle);
}

char *
pg_dlerror(void)
{
      static char errmsg[] = "shl_load failed";

      if (errno)
            return strerror(errno);

      return errmsg;
}

Generated by  Doxygen 1.6.0   Back to index