73 строки
3.3 KiB
C
73 строки
3.3 KiB
C
/*
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* Copyright (c) 2013 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2013 NVIDIA Corporation. All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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/**
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* Wrappers to LTDL functions so that other parts of library can
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* access the LTDL functionality that is embedded/linked in to Open
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* MPI (vs. a LTDL library that was linked in by the application).
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* The OPAL-linked LTDL library is intentionally not DECLSPEC'ed so
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* that it is not visible to upper-layer applications; its functions
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* are provided to the rest of the OMPI code base via the following
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* OPAL wrappers.
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* For functions that return int, if there are any failures, these
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* functions can return both OPAL error codes and LTDL error codes.
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* If the return code is negative it is OPAL, and if positive it
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* follows the LTDL convention where the number represents the number
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* of errors seen. You can then call opal_lt_dlerror() to get more
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* information when you see a positive error code.
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*/
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/**
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* Create opal_lt_dlhandle and opal_lt_dladvise types so that
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* consumers of this code can use these opal types rather than the
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* LTDL versions. In this way, there is no need to include the
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* underlying ltdl.h here (it is only needed in lt_interface.c) and we
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* do not need to use the OPAL_WANT_LIBLTDL and OPAL_HAVE_LTDL_ADVISE
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* macros anywhere else. These types are effectively just pointers to
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* the underlying LTDL types.
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*/
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struct opal_lt_dlhandle_st;
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typedef struct opal_lt_dlhandle_st* opal_lt_dlhandle;
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struct opal_lt_dladvise_st;
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typedef struct opal_lt_dladvise_st* opal_lt_dladvise;
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/**
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* Wrappers for the ltdl library.
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*/
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OPAL_DECLSPEC int opal_lt_dlinit(void);
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OPAL_DECLSPEC int opal_lt_dlexit(void);
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/* Module search path manipulation. */
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OPAL_DECLSPEC int opal_lt_dladdsearchdir(const char *search_dir);
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OPAL_DECLSPEC int opal_lt_dlinsertsearchdir(const char *before,
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const char *search_dir);
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OPAL_DECLSPEC int opal_lt_dlsetsearchpath(const char *search_path);
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OPAL_DECLSPEC const char *opal_lt_dlgetsearchpath(void);
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OPAL_DECLSPEC int opal_lt_dlforeachfile(const char *search_path,
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int (*func) (const char *filename, void *data),
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void *data);
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/* User module loading advisors. */
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OPAL_DECLSPEC int opal_lt_dladvise_init(opal_lt_dladvise *advise);
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OPAL_DECLSPEC int opal_lt_dladvise_destroy(opal_lt_dladvise *advise);
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OPAL_DECLSPEC int opal_lt_dladvise_ext(opal_lt_dladvise *advise);
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OPAL_DECLSPEC int opal_lt_dladvise_resident(opal_lt_dladvise *advise);
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OPAL_DECLSPEC int opal_lt_dladvise_local(opal_lt_dladvise *advise);
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OPAL_DECLSPEC int opal_lt_dladvise_global(opal_lt_dladvise *advise);
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OPAL_DECLSPEC int opal_lt_dladvise_preload(opal_lt_dladvise *advise);
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/* Portable libltdl versions of the system dlopen() API. */
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OPAL_DECLSPEC opal_lt_dlhandle opal_lt_dlopen(const char *filename);
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OPAL_DECLSPEC opal_lt_dlhandle opal_lt_dlopenext(const char *filename);
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OPAL_DECLSPEC void *opal_lt_dlsym(opal_lt_dlhandle handle, const char *name);
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OPAL_DECLSPEC const char *opal_lt_dlerror(void);
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OPAL_DECLSPEC int opal_lt_dlclose(opal_lt_dlhandle handle);
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OPAL_DECLSPEC opal_lt_dlhandle opal_lt_dlopenadvise(const char *filename,
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opal_lt_dladvise advise);
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