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move save stuff to save.cpp

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This commit is contained in:
Angie 2024-06-21 19:52:43 -04:00
parent da86be4b8a
commit 49c40ee687
3 changed files with 147 additions and 122 deletions
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1
librecomp/CMakeLists.txt
View file

@ -21,6 +21,7 @@ add_library(librecomp STATIC
"${CMAKE_CURRENT_SOURCE_DIR}/src/print.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/src/recomp.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/src/rsp.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/src/save.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/src/sp.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/src/ultra_stubs.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/src/ultra_translation.cpp"

122
librecomp/src/pi.cpp
View file

@ -90,128 +90,6 @@ void recomp::do_rom_pio(uint8_t* rdram, gpr ram_address, uint32_t physical_addr)
MEM_B(3, ram_address) = *rom_addr++;
}
struct {
std::array<char, 0x20000> save_buffer;
std::thread saving_thread;
moodycamel::LightweightSemaphore write_sempahore;
std::mutex save_buffer_mutex;
} save_context;
const std::u8string save_folder = u8"saves";
extern std::filesystem::path config_path;
std::filesystem::path get_save_file_path() {
return config_path / save_folder / (std::u8string{recomp::current_game_id()} + u8".bin");
}
void update_save_file() {
bool saving_failed = false;
{
std::ofstream save_file = recomp::open_output_file_with_backup(get_save_file_path(), std::ios_base::binary);
if (save_file.good()) {
std::lock_guard lock{ save_context.save_buffer_mutex };
save_file.write(save_context.save_buffer.data(), save_context.save_buffer.size());
}
else {
saving_failed = true;
}
}
if (!saving_failed) {
saving_failed = !recomp::finalize_output_file_with_backup(get_save_file_path());
}
if (saving_failed) {
ultramodern::error_handling::message_box("Failed to write to the save file. Check your file permissions and whether the save folder has been moved to Dropbox or similar, as this can cause issues.");
}
}
extern std::atomic_bool exited;
void saving_thread_func(RDRAM_ARG1) {
while (!exited) {
bool save_buffer_updated = false;
// Repeatedly wait for a new action to be sent.
constexpr int64_t wait_time_microseconds = 10000;
constexpr int max_actions = 128;
int num_actions = 0;
// Wait up to the given timeout for a write to come in. Allow multiple writes to coalesce together into a single save.
// Cap the number of coalesced writes to guarantee that the save buffer eventually gets written out to the file even if the game
// is constantly sending writes.
while (save_context.write_sempahore.wait(wait_time_microseconds) && num_actions < max_actions) {
save_buffer_updated = true;
num_actions++;
}
// If an action came through that affected the save file, save the updated contents.
if (save_buffer_updated) {
update_save_file();
}
}
}
void recomp::save::write_ptr(const void* in, uint32_t offset, uint32_t count) {
{
std::lock_guard lock { save_context.save_buffer_mutex };
memcpy(&save_context.save_buffer[offset], in, count);
}
save_context.write_sempahore.signal();
}
void recomp::save::write(RDRAM_ARG PTR(void) rdram_address, uint32_t offset, uint32_t count) {
{
std::lock_guard lock { save_context.save_buffer_mutex };
for (uint32_t i = 0; i < count; i++) {
save_context.save_buffer[offset + i] = MEM_B(i, rdram_address);
}
}
save_context.write_sempahore.signal();
}
void recomp::save::read(RDRAM_ARG PTR(void) rdram_address, uint32_t offset, uint32_t count) {
std::lock_guard lock { save_context.save_buffer_mutex };
for (size_t i = 0; i < count; i++) {
MEM_B(i, rdram_address) = save_context.save_buffer[offset + i];
}
}
void recomp::save::clear(uint32_t start, uint32_t size, char value) {
{
std::lock_guard lock { save_context.save_buffer_mutex };
std::fill_n(save_context.save_buffer.begin() + start, size, value);
}
save_context.write_sempahore.signal();
}
void recomp::save::init(uint8_t *rdram) {
std::filesystem::path save_file_path = get_save_file_path();
// Ensure the save file directory exists.
std::filesystem::create_directories(save_file_path.parent_path());
// Read the save file if it exists.
std::ifstream save_file = recomp::open_input_file_with_backup(save_file_path, std::ios_base::binary);
if (save_file.good()) {
save_file.read(save_context.save_buffer.data(), save_context.save_buffer.size());
}
else {
// Otherwise clear the save file to all zeroes.
save_context.save_buffer.fill(0);
}
save_context.saving_thread = std::thread{saving_thread_func, PASS_RDRAM};
}
void recomp::save::join_thread() {
if (save_context.saving_thread.joinable()) {
save_context.saving_thread.join();
}
}
void do_dma(RDRAM_ARG PTR(OSMesgQueue) mq, gpr rdram_address, uint32_t physical_addr, uint32_t size, uint32_t direction) {
// TODO asynchronous transfer
// TODO implement unaligned DMA correctly

146
librecomp/src/save.cpp Normal file
View file

@ -0,0 +1,146 @@
#include <array>
#include <cassert>
#include <cstring>
#include <filesystem>
#include <fstream>
#include <mutex>
#include <string>
#include <thread>
#include "ultramodern/error_handling.hpp"
#include "librecomp/files.hpp"
#include "librecomp/game.hpp"
#include "librecomp/recomp.h"
#include "librecomp/save.hpp"
struct {
std::array<char, 0x20000> save_buffer;
std::thread saving_thread;
moodycamel::LightweightSemaphore write_sempahore;
std::mutex save_buffer_mutex;
} save_context;
const std::u8string save_folder = u8"saves";
extern std::filesystem::path config_path;
std::filesystem::path get_save_file_path() {
return config_path / save_folder / (std::u8string{recomp::current_game_id()} + u8".bin");
}
void update_save_file() {
bool saving_failed = false;
{
std::ofstream save_file = recomp::open_output_file_with_backup(get_save_file_path(), std::ios_base::binary);
if (save_file.good()) {
std::lock_guard lock{ save_context.save_buffer_mutex };
save_file.write(save_context.save_buffer.data(), save_context.save_buffer.size());
}
else {
saving_failed = true;
}
}
if (!saving_failed) {
saving_failed = !recomp::finalize_output_file_with_backup(get_save_file_path());
}
if (saving_failed) {
ultramodern::error_handling::message_box("Failed to write to the save file. Check your file permissions and whether the save folder has been moved to Dropbox or similar, as this can cause issues.");
}
}
extern std::atomic_bool exited;
void saving_thread_func(RDRAM_ARG1) {
while (!exited) {
bool save_buffer_updated = false;
// Repeatedly wait for a new action to be sent.
constexpr int64_t wait_time_microseconds = 10000;
constexpr int max_actions = 128;
int num_actions = 0;
// Wait up to the given timeout for a write to come in. Allow multiple writes to coalesce together into a single save.
// Cap the number of coalesced writes to guarantee that the save buffer eventually gets written out to the file even if the game
// is constantly sending writes.
while (save_context.write_sempahore.wait(wait_time_microseconds) && num_actions < max_actions) {
save_buffer_updated = true;
num_actions++;
}
// If an action came through that affected the save file, save the updated contents.
if (save_buffer_updated) {
update_save_file();
}
}
}
void recomp::save::write_ptr(const void* in, uint32_t offset, uint32_t count) {
assert(offset + count < save_context.save_buffer.size());
{
std::lock_guard lock { save_context.save_buffer_mutex };
memcpy(&save_context.save_buffer[offset], in, count);
}
save_context.write_sempahore.signal();
}
void recomp::save::write(RDRAM_ARG PTR(void) rdram_address, uint32_t offset, uint32_t count) {
assert(offset + count < save_context.save_buffer.size());
{
std::lock_guard lock { save_context.save_buffer_mutex };
for (uint32_t i = 0; i < count; i++) {
save_context.save_buffer[offset + i] = MEM_B(i, rdram_address);
}
}
save_context.write_sempahore.signal();
}
void recomp::save::read(RDRAM_ARG PTR(void) rdram_address, uint32_t offset, uint32_t count) {
assert(offset + count < save_context.save_buffer.size());
std::lock_guard lock { save_context.save_buffer_mutex };
for (size_t i = 0; i < count; i++) {
MEM_B(i, rdram_address) = save_context.save_buffer[offset + i];
}
}
void recomp::save::clear(uint32_t start, uint32_t size, char value) {
assert(start + size < save_context.save_buffer.size());
{
std::lock_guard lock { save_context.save_buffer_mutex };
std::fill_n(save_context.save_buffer.begin() + start, size, value);
}
save_context.write_sempahore.signal();
}
void recomp::save::init(uint8_t *rdram) {
std::filesystem::path save_file_path = get_save_file_path();
// Ensure the save file directory exists.
std::filesystem::create_directories(save_file_path.parent_path());
// Read the save file if it exists.
std::ifstream save_file = recomp::open_input_file_with_backup(save_file_path, std::ios_base::binary);
if (save_file.good()) {
save_file.read(save_context.save_buffer.data(), save_context.save_buffer.size());
}
else {
// Otherwise clear the save file to all zeroes.
save_context.save_buffer.fill(0);
}
save_context.saving_thread = std::thread{saving_thread_func, PASS_RDRAM};
}
void recomp::save::join_thread() {
if (save_context.saving_thread.joinable()) {
save_context.saving_thread.join();
}
}