mirror of
https://github.com/mkxp-z/mkxp-z.git
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ee31cccb81
Save states in libretro builds now also contain the state of the pseudorandom number generator used to implement the WASI `random_get` function for better save state determinism. I've also changed the PRNG from MT19937 to PCG.
114 lines
3.8 KiB
C++
114 lines
3.8 KiB
C++
/*
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** sandbox.h
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**
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** This file is part of mkxp.
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**
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** Copyright (C) 2013 - 2021 Amaryllis Kulla <ancurio@mapleshrine.eu>
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**
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** mkxp is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 2 of the License, or
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** (at your option) any later version.
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**
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** mkxp 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 for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with mkxp. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef MKXPZ_SANDBOX_H
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#define MKXPZ_SANDBOX_H
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#include <atomic>
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#include <memory>
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#include <string>
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#include <vector>
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#include <mkxp-sandbox-bindgen.h>
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#include <boost/optional.hpp>
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#include <libretro.h>
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#include "wasm-types.h"
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#include "audio.h"
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#include "etc.h"
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#include "graphics.h"
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namespace mkxp_sandbox {
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struct sandbox;
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}
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namespace mkxp_retro {
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extern boost::optional<struct mkxp_sandbox::sandbox> sandbox;
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}
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namespace mkxp_sandbox {
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struct sandbox {
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private:
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std::shared_ptr<struct w2c_ruby> ruby;
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std::unique_ptr<struct w2c_wasi__snapshot__preview1> wasi;
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boost::optional<struct mkxp_sandbox::bindings> bindings;
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std::atomic<Movie *> movie;
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bool yielding;
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wasm_ptr_t sandbox_malloc(wasm_size_t size);
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void sandbox_free(wasm_ptr_t ptr);
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public:
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Exception e;
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std::vector<uint8_t> script_decode_buffer;
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std::vector<std::string> font_names_buffer;
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Bitmap *trans_map;
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Color bitmap_pixel_buffer;
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AudioMutex movie_mutex;
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struct retro_device_power device_power;
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std::string convert_string_buffer;
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bool transitioning;
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inline struct mkxp_sandbox::bindings &operator*() noexcept { return *bindings; }
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inline struct mkxp_sandbox::bindings *operator->() noexcept { return &*bindings; }
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sandbox();
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~sandbox();
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bool sandbox_serialize_wasi(void *&data, wasm_size_t &max_size) const;
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bool sandbox_deserialize_wasi(const void *&data, wasm_size_t &max_size);
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Movie *get_movie_from_main_thread();
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Movie *get_movie_from_audio_thread();
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void set_movie(Movie *new_movie);
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// Gets the current working directory in the sandbox.
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struct sandbox_str_guard getcwd();
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// Internal utility method of the `SANDBOX_YIELD` macro.
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inline void _begin_yield() {
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yielding = true;
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w2c_ruby_asyncify_start_unwind(ruby.get(), ruby->w2c_mkxp_sandbox_async_buf);
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}
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// Internal utility method of the `SANDBOX_YIELD` macro.
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inline void _end_yield() {
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w2c_ruby_asyncify_stop_rewind(ruby.get());
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}
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// Executes the given coroutine as the top-level coroutine. Don't call this from inside of another coroutine; use `sb()->bind<T>()` instead.
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// Returns whether or not the coroutine completed execution.
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template <typename T> inline bool run() {
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if (yielding) {
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w2c_ruby_asyncify_start_rewind(ruby.get(), ruby->w2c_mkxp_sandbox_async_buf);
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yielding = false;
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}
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for (;;) {
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{
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struct mkxp_sandbox::bindings::stack_frame_guard<T> frame = bindings->bind<T>();
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frame()();
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if (yielding || frame().is_complete()) break;
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}
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w2c_ruby_mkxp_sandbox_yield(ruby.get());
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}
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return !yielding;
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}
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};
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inline struct sandbox &sb() noexcept {
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return *mkxp_retro::sandbox;
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}
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}
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#endif // MKXPZ_SANDBOX_H
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