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[22_2] add api to load shared library (#320)
TODO: add proper implementation on wasm
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,34 @@ | ||
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| /** \file shared_lib.cpp | ||
| * \copyright GPLv3 | ||
| * \details dynamic (shared) library related routines | ||
| * \author jingkaimori | ||
| * \date 2024 | ||
| */ | ||
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| #include "shared_lib.hpp" | ||
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| #ifndef OS_WASM | ||
| namespace lolly { | ||
| namespace system { | ||
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| shared_lib_rep::shared_lib_rep (string dynamic_name, url path) | ||
| : dynamic_ref (tb_dynamic_init (c_string (as_system_string (path)))), | ||
| rep (dynamic_name) { | ||
| if (dynamic_ref == nullptr) { | ||
| TM_FAILED ("error occurs during loading of library") | ||
| } | ||
| }; | ||
| shared_lib_rep::~shared_lib_rep () { | ||
| tb_dynamic_exit (dynamic_ref); | ||
| shared_lib::instances->reset (res_name); | ||
| }; | ||
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| shared_lib | ||
| load_shared_library (string name, url path) { | ||
| return make (shared_lib, name, tm_new<shared_lib_rep> (name, path)); | ||
| } | ||
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| } // namespace system | ||
| } // namespace lolly | ||
| #endif |
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| /** \file shared_lib.hpp | ||
| * \copyright GPLv3 | ||
| * \details dynamic (shared) library related routines | ||
| * \author jingkaimori | ||
| * \date 2024 | ||
| */ | ||
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| #pragma once | ||
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| #include "resource.hpp" | ||
| #include "url.hpp" | ||
| #include <stdint.h> | ||
| #include <tbox/tbox.h> | ||
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| #ifndef OS_WASM | ||
| namespace lolly { | ||
| namespace system { | ||
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| RESOURCE (shared_lib); | ||
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| struct shared_lib_rep : rep<shared_lib> { | ||
| private: | ||
| tb_dynamic_ref_t dynamic_ref; | ||
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| public: | ||
| shared_lib_rep (string dynamic_name, url path); | ||
| virtual ~shared_lib_rep (); | ||
| template <typename Ret, typename... Args> | ||
| auto get_function (string function_name) -> Ret (*) (Args...) { | ||
| return (Ret (*) (Args...)) tb_dynamic_func (dynamic_ref, | ||
| c_string (function_name)); | ||
| } | ||
| friend struct shared_lib; | ||
| }; | ||
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| shared_lib load_shared_library (string name, url path); | ||
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| } // namespace system | ||
| } // namespace lolly | ||
| #endif |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,17 @@ | ||
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| /****************************************************************************** | ||
| * MODULE : example_dynamic_library.cpp | ||
| * DESCRIPTION: an example dynamic library for testing | ||
| * COPYRIGHT : (C) 2024 jingkaimori | ||
| ******************************************************************************* | ||
| * This software falls under the GNU general public license version 3 or later. | ||
| * It comes WITHOUT ANY WARRANTY WHATSOEVER. For details, see the file LICENSE | ||
| * in the root directory or <http://www.gnu.org/licenses/gpl-3.0.html>. | ||
| ******************************************************************************/ | ||
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| extern "C" { | ||
| double | ||
| square_div_2 (int arg) { | ||
| return arg * arg / 2.0; | ||
| }; | ||
| } |
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| /****************************************************************************** | ||
| * MODULE : shared_lib_test.cpp | ||
| * DESCRIPTION: tests on dynamic library loading | ||
| * COPYRIGHT : (C) 2024 jingkaimori | ||
| ******************************************************************************* | ||
| * This software falls under the GNU general public license version 3 or later. | ||
| * It comes WITHOUT ANY WARRANTY WHATSOEVER. For details, see the file LICENSE | ||
| * in the root directory or <http://www.gnu.org/licenses/gpl-3.0.html>. | ||
| ******************************************************************************/ | ||
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| #include "a_lolly_test.hpp" | ||
| #include "lolly/system/shared_lib.hpp" | ||
| #include "sys_utils.hpp" | ||
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| #ifndef OS_WASM | ||
| using lolly::system::load_shared_library; | ||
| using lolly::system::shared_lib; | ||
| #endif | ||
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| TEST_CASE ("load_shared_library") { | ||
| #ifndef OS_WASM | ||
| url lib_path; | ||
| if (os_win ()) { | ||
| lib_path= url_pwd () * "example_dynamic_library.dll"; | ||
| } | ||
| else if (os_macos ()) { | ||
| lib_path= url_pwd () * "libexample_dynamic_library.dylib"; | ||
| } | ||
| else { | ||
| lib_path= url_pwd () * "libexample_dynamic_library.so"; | ||
| } | ||
| shared_lib lib= load_shared_library ("example_dynamic_library", lib_path); | ||
| double (*func) (int)= lib->get_function<double, int> ("square_div_2"); | ||
| double res = func (5); | ||
| CHECK_EQ (res, 12.5); | ||
| #endif | ||
| } |
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