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73 lines
2.8 KiB
73 lines
2.8 KiB
/*
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Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef MY_SHAREDLIB_INCLUDED
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#define MY_SHAREDLIB_INCLUDED
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/**
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@file include/my_sharedlib.h
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Functions related to handling of plugins and other dynamically loaded
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libraries.
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*/
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#if defined(_WIN32)
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#define dlsym(lib, name) (void *)GetProcAddress((HMODULE)lib, name)
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#define dlopen(libname, unused) LoadLibraryEx(libname, NULL, 0)
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#define dlclose(lib) FreeLibrary((HMODULE)lib)
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#define DLERROR_GENERATE(errmsg, error_number) \
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char win_errormsg[2048]; \
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if (FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, 0, error_number, 0, \
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win_errormsg, 2048, NULL)) { \
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char *ptr; \
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for (ptr = &win_errormsg[0] + strlen(win_errormsg) - 1; \
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ptr >= &win_errormsg[0] && strchr("\r\n\t\0x20", *ptr); ptr--) \
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*ptr = 0; \
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errmsg = win_errormsg; \
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} else \
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errmsg = ""
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#define dlerror() ""
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#define dlopen_errno GetLastError()
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#else /* _WIN32 */
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#ifndef MYSQL_ABI_CHECK
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#include <dlfcn.h>
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#include <errno.h>
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#endif
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#define DLERROR_GENERATE(errmsg, error_number) errmsg = dlerror()
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#define dlopen_errno errno
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#endif /* _WIN32 */
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/*
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MYSQL_PLUGIN_IMPORT macro is used to export mysqld data
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(i.e variables) for usage in storage engine loadable plugins.
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Outside of Windows, it is dummy.
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*/
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#if (defined(_WIN32) && defined(MYSQL_DYNAMIC_PLUGIN))
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#define MYSQL_PLUGIN_IMPORT __declspec(dllimport)
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#else
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#define MYSQL_PLUGIN_IMPORT
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#endif
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#endif // MY_SHAREDLIB_INCLUDED
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