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/*-
* Copyright (c) 2014-2015 MongoDB, Inc.
* Copyright (c) 2008-2014 WiredTiger, Inc.
* All rights reserved.
*
* See the file LICENSE for redistribution information.
*/
#include "wt_internal.h"
/*
* __wt_dlopen --
* Open a dynamic library.
*/
int
__wt_dlopen(WT_SESSION_IMPL *session, const char *path, WT_DLH **dlhp)
{
WT_DECL_RET;
WT_DLH *dlh;
WT_RET(__wt_calloc_one(session, &dlh));
WT_ERR(__wt_strdup(session, path, &dlh->name));
/* NULL means load from the current binary */
if (path == NULL) {
ret = GetModuleHandleExA(0, NULL, (HMODULE *)&dlh->handle);
if (ret == FALSE)
WT_ERR_MSG(session,
__wt_errno(), "GetModuleHandleEx(%s): %s", path, 0);
} else {
// TODO: load dll here
DebugBreak();
}
/* Windows returns 0 on failure, WT expects 0 on success */
ret = !ret;
*dlhp = dlh;
if (0) {
err: __wt_free(session, dlh->name);
__wt_free(session, dlh);
}
return (ret);
}
/*
* __wt_dlsym --
* Lookup a symbol in a dynamic library.
*/
int
__wt_dlsym(WT_SESSION_IMPL *session,
WT_DLH *dlh, const char *name, bool fail, void *sym_ret)
{
void *sym;
*(void **)sym_ret = NULL;
sym = GetProcAddress(dlh->handle, name);
if (sym == NULL && fail) {
WT_RET_MSG(session, __wt_errno(),
"GetProcAddress(%s in %s)", name, dlh->name);
}
*(void **)sym_ret = sym;
return (0);
}
/*
* __wt_dlclose --
* Close a dynamic library
*/
int
__wt_dlclose(WT_SESSION_IMPL *session, WT_DLH *dlh)
{
WT_DECL_RET;
if ((ret = FreeLibrary(dlh->handle)) == FALSE) {
__wt_err(session, __wt_errno(), "FreeLibrary");
}
/* Windows returns 0 on failure, WT expects 0 on success */
ret = !ret;
__wt_free(session, dlh->name);
__wt_free(session, dlh);
return (ret);
}
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