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Update Darwin dlopen() support to avoid deprecation warnings with latest

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Apple developer tools.  We now use dlopen directly if available, and fall
back to the older code if not.  Chris Campbell
This commit is contained in:
Tom Lane 2006-10-08 19:31:03 +00:00
parent 92fb5edbc1
commit c50b36d215
1 changed files with 46 additions and 5 deletions
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51
src/backend/port/dynloader/darwin.c
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@ -1,19 +1,58 @@
/*
* These routines were taken from the Apache source, but were made
* available with a PostgreSQL-compatible license. Kudos Wilfredo
* Sánchez <wsanchez@apple.com>.
* Dynamic loading support for Darwin
*
* $PostgreSQL: pgsql/src/backend/port/dynloader/darwin.c,v 1.10 2004/01/07 18:56:27 neilc Exp $
* If dlopen() is available (Darwin 10.3 and later), we just use it.
* Otherwise we emulate it with the older, now deprecated, NSLinkModule API.
*
* $PostgreSQL: pgsql/src/backend/port/dynloader/darwin.c,v 1.11 2006/10/08 19:31:03 tgl Exp $
*/
#include "postgres.h"
#ifdef HAVE_DLOPEN
#include <dlfcn.h>
#else
#include <mach-o/dyld.h>
#endif
#include "dynloader.h"
static NSObjectFileImageReturnCode cofiff_result = NSObjectFileImageFailure;
#ifdef HAVE_DLOPEN
void *
pg_dlopen(char *filename)
{
return dlopen(filename, RTLD_NOW | RTLD_GLOBAL);
}
void
pg_dlclose(void *handle)
{
dlclose(handle);
}
PGFunction
pg_dlsym(void *handle, char *funcname)
{
/* Do not prepend an underscore: see dlopen(3) */
return dlsym(handle, funcname);
}
char *
pg_dlerror(void)
{
return dlerror();
}
#else /* !HAVE_DLOPEN */
/*
* These routines were taken from the Apache source, but were made
* available with a PostgreSQL-compatible license. Kudos Wilfredo
* Sánchez <wsanchez@apple.com>.
*/
static NSObjectFileImageReturnCode cofiff_result = NSObjectFileImageFailure;
void *
pg_dlopen(char *filename)
@ -92,3 +131,5 @@ pg_dlerror(void)
return (char *) errorString;
}
#endif /* HAVE_DLOPEN */