mirror of
https://github.com/gozfree/gear-lib.git
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88 lines
2.9 KiB
C
88 lines
2.9 KiB
C
/******************************************************************************
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* Copyright (C) 2014-2020 Zhifeng Gong <gozfree@163.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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******************************************************************************/
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#ifndef LIBPLUGIN_H
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#define LIBPLUGIN_H
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#include <libmacro.h>
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#include <stdio.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct version {
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int major;
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int minor;
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int patch;
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};
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struct plugin {
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char *name;
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char *path;
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struct version version;
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void *(*open)(void *arg);
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void (*close)(void *arg);
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void *(*call)(void *arg0, ...);
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void *handle;
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struct list_head entry;
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};
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struct plugin_manager {
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struct list_head plugins;
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};
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struct plugin_manager *plugin_manager_create();
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void plugin_manager_destroy(struct plugin_manager *);
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struct plugin *plugin_lookup(struct plugin_manager *pm, const char *name);
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struct plugin *plugin_load(struct plugin_manager *pm, const char *path, const char *name);
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void plugin_unload(struct plugin_manager *pm, const char *name);
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struct plugin *plugin_reload(struct plugin_manager *pm, const char *path, const char *name);
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/*
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* using HOOK_CALL(func, args...), prev/post functions can be hook into func
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*/
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#define HOOK_CALL(fn, ...) \
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({ \
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fn##_prev(__VA_ARGS__); \
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__typeof__(fn) *sym = dlsym(RTLD_NEXT, #fn); \
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if (!sym) {return NULL;} \
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sym(__VA_ARGS__); \
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fn##_post(__VA_ARGS__); \
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})
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/*
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* using CALL(fn, args...), you need override api
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*/
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#define CALL(fn, ...) \
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({__typeof__(fn) *sym = (__typeof__(fn) *) \
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dlsym(RTLD_NEXT, #fn); \
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sym(__VA_ARGS__);})
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#ifdef __cplusplus
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}
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#endif
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#endif
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