e81c070ef0
Embedding libltdl without the use of Libtool bootstrapping has proven... difficult. Instead, create a new simple "dl" framework. It only provides 4 functions: - open a DSO (very similar to lt_dlopenadvise()) - lookup a symbol in a previously-opened DSO (very similar to lt_dlsym()) - close a previously-opened DSO (very similar to lt_dlclose()) - iterate over all files in a directory (very similar to ld_dlforeachfile()) There will be follow-on commits with a simple dlopen-based component (nowhere near as complete/functional as libltdl, but good enough for Linux and OS X), and a libltdl-based component for all other platforms. The intent is that the dlopen-based component can be built by default in almost all cases. But if libltdl is available, that component will be built. End result: we still get DSO-based functionality by default in (almost?) all cases. Without embedding libltdl. Which is what we want.
69 строки
1.7 KiB
C
69 строки
1.7 KiB
C
/*
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* Copyright (c) 2004-2010 The Trustees of Indiana University.
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* All rights reserved.
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* Copyright (c) 2015 Cisco Systems, Inc. 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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* This file is a simple set of wrappers around the selected OPAL DL
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* component (it's a compile-time framework with, at most, a single
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* component; see dl.h for details).
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*/
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#include "opal_config.h"
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#include "opal/include/opal/constants.h"
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#include "opal/mca/dl/base/base.h"
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int opal_dl_open(const char *fname,
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bool use_ext, bool private_namespace,
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opal_dl_handle_t **handle, char **err_msg)
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{
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*handle = NULL;
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if (NULL != opal_dl && NULL != opal_dl->open) {
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return opal_dl->open(fname, use_ext, private_namespace,
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handle, err_msg);
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}
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return OPAL_ERR_NOT_SUPPORTED;
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}
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int opal_dl_lookup(opal_dl_handle_t *handle,
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const char *symbol,
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void **ptr, char **err_msg)
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{
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if (NULL != opal_dl && NULL != opal_dl->lookup) {
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return opal_dl->lookup(handle, symbol, ptr, err_msg);
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}
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return OPAL_ERR_NOT_SUPPORTED;
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}
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int opal_dl_close(opal_dl_handle_t *handle)
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{
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if (NULL != opal_dl && NULL != opal_dl->close) {
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return opal_dl->close(handle);
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}
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return OPAL_ERR_NOT_SUPPORTED;
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}
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int opal_dl_foreachfile(const char *search_path,
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int (*cb_func)(const char *filename, void *context),
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void *context)
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{
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if (NULL != opal_dl && NULL != opal_dl->foreachfile) {
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return opal_dl->foreachfile(search_path, cb_func, context);
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}
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return OPAL_ERR_NOT_SUPPORTED;
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}
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