mirror of
https://github.com/libretro/RetroArch.git
synced 2024-11-27 02:00:41 +00:00
ea87495a4e
* Simplify autosave command function * Simplify and split save and savestate logic save.c contains "SRAM" saves and their logic, which uses no task/queue.
589 lines
14 KiB
C
589 lines
14 KiB
C
/* RetroArch - A frontend for libretro.
|
|
* Copyright (C) 2011-2017 - Daniel De Matteis
|
|
* Copyright (C) 2016-2019 - Brad Parker
|
|
*
|
|
* RetroArch is free software: you can redistribute it and/or modify it under the terms
|
|
* of the GNU General Public License as published by the Free Software Found-
|
|
* ation, either version 3 of the License, or (at your option) any later version.
|
|
*
|
|
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
|
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
* PURPOSE. See the GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with RetroArch.
|
|
* If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include <sys/types.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
|
|
#include <lists/string_list.h>
|
|
#include <streams/interface_stream.h>
|
|
#include <streams/file_stream.h>
|
|
#include <streams/rzip_stream.h>
|
|
#include <rthreads/rthreads.h>
|
|
#include <file/file_path.h>
|
|
#include <string/stdstring.h>
|
|
#include <time/rtime.h>
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "../config.h"
|
|
#endif
|
|
|
|
#include "../content.h"
|
|
#include "../core.h"
|
|
#include "../core_info.h"
|
|
#include "../file_path_special.h"
|
|
#include "../configuration.h"
|
|
#include "../msg_hash.h"
|
|
#include "../runloop.h"
|
|
#include "../verbosity.h"
|
|
#ifdef HAVE_CHEATS
|
|
#include "../cheat_manager.h"
|
|
#endif
|
|
|
|
struct ram_type
|
|
{
|
|
const char *path;
|
|
int type;
|
|
};
|
|
|
|
static struct string_list *task_save_files = NULL;
|
|
|
|
#ifdef HAVE_THREADS
|
|
typedef struct autosave autosave_t;
|
|
|
|
/* Autosave support. */
|
|
struct autosave_st
|
|
{
|
|
autosave_t **list;
|
|
unsigned num;
|
|
};
|
|
|
|
enum autosave_flags
|
|
{
|
|
AUTOSAVE_FLAG_QUIT = (1 << 0),
|
|
AUTOSAVE_FLAG_COMPRESS_FILES = (1 << 1)
|
|
};
|
|
|
|
struct autosave
|
|
{
|
|
void *buffer;
|
|
const void *retro_buffer;
|
|
const char *path;
|
|
slock_t *lock;
|
|
slock_t *cond_lock;
|
|
scond_t *cond;
|
|
sthread_t *thread;
|
|
size_t bufsize;
|
|
unsigned interval;
|
|
uint8_t flags;
|
|
};
|
|
|
|
static struct autosave_st autosave_state;
|
|
|
|
|
|
/**
|
|
* autosave_thread:
|
|
* @data : pointer to autosave object
|
|
*
|
|
* Callback function for (threaded) autosave.
|
|
**/
|
|
static void autosave_thread(void *data)
|
|
{
|
|
autosave_t *save = (autosave_t*)data;
|
|
|
|
for (;;)
|
|
{
|
|
bool differ;
|
|
|
|
slock_lock(save->lock);
|
|
differ = memcmp(save->buffer, save->retro_buffer,
|
|
save->bufsize) != 0;
|
|
if (differ)
|
|
memcpy(save->buffer, save->retro_buffer, save->bufsize);
|
|
slock_unlock(save->lock);
|
|
|
|
if (differ)
|
|
{
|
|
intfstream_t *file = NULL;
|
|
|
|
/* Should probably deal with this more elegantly. */
|
|
if (save->flags & AUTOSAVE_FLAG_COMPRESS_FILES)
|
|
file = intfstream_open_rzip_file(save->path,
|
|
RETRO_VFS_FILE_ACCESS_WRITE);
|
|
else
|
|
file = intfstream_open_file(save->path,
|
|
RETRO_VFS_FILE_ACCESS_WRITE, RETRO_VFS_FILE_ACCESS_HINT_NONE);
|
|
|
|
if (file)
|
|
{
|
|
intfstream_write(file, save->buffer, save->bufsize);
|
|
intfstream_flush(file);
|
|
intfstream_close(file);
|
|
free(file);
|
|
}
|
|
}
|
|
|
|
slock_lock(save->cond_lock);
|
|
|
|
if (save->flags & AUTOSAVE_FLAG_QUIT)
|
|
{
|
|
slock_unlock(save->cond_lock);
|
|
break;
|
|
}
|
|
|
|
scond_wait_timeout(save->cond,
|
|
save->cond_lock,
|
|
#if defined(_MSC_VER) && _MSC_VER <= 1200
|
|
save->interval * 1000000
|
|
#else
|
|
save->interval * 1000000LL
|
|
#endif
|
|
);
|
|
|
|
slock_unlock(save->cond_lock);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* autosave_new:
|
|
* @path : path to autosave file
|
|
* @data : pointer to buffer
|
|
* @size : size of @data buffer
|
|
* @interval : interval at which saves should be performed.
|
|
*
|
|
* Create and initialize autosave object.
|
|
*
|
|
* @return Pointer to new autosave_t object if successful, otherwise
|
|
* NULL.
|
|
**/
|
|
static autosave_t *autosave_new(const char *path,
|
|
const void *data, size_t size,
|
|
unsigned interval, bool compress)
|
|
{
|
|
void *buf = NULL;
|
|
autosave_t *handle = (autosave_t*)malloc(sizeof(*handle));
|
|
if (!handle)
|
|
return NULL;
|
|
|
|
handle->flags = 0;
|
|
handle->bufsize = size;
|
|
handle->interval = interval;
|
|
if (compress)
|
|
handle->flags |= AUTOSAVE_FLAG_COMPRESS_FILES;
|
|
handle->retro_buffer = data;
|
|
handle->path = path;
|
|
|
|
if (!(buf = malloc(size)))
|
|
{
|
|
free(handle);
|
|
return NULL;
|
|
}
|
|
|
|
handle->buffer = buf;
|
|
|
|
memcpy(handle->buffer, handle->retro_buffer, handle->bufsize);
|
|
|
|
handle->lock = slock_new();
|
|
handle->cond_lock = slock_new();
|
|
handle->cond = scond_new();
|
|
handle->thread = sthread_create(autosave_thread, handle);
|
|
|
|
return handle;
|
|
}
|
|
|
|
/**
|
|
* autosave_free:
|
|
* @handle : pointer to autosave object
|
|
*
|
|
* Frees autosave object.
|
|
**/
|
|
static void autosave_free(autosave_t *handle)
|
|
{
|
|
slock_lock(handle->cond_lock);
|
|
handle->flags |= AUTOSAVE_FLAG_QUIT;
|
|
slock_unlock(handle->cond_lock);
|
|
scond_signal(handle->cond);
|
|
sthread_join(handle->thread);
|
|
|
|
slock_free(handle->lock);
|
|
slock_free(handle->cond_lock);
|
|
scond_free(handle->cond);
|
|
|
|
if (handle->buffer)
|
|
free(handle->buffer);
|
|
handle->buffer = NULL;
|
|
}
|
|
|
|
bool autosave_init(void)
|
|
{
|
|
unsigned i;
|
|
autosave_t **list = NULL;
|
|
settings_t *settings = config_get_ptr();
|
|
unsigned autosave_interval = settings->uints.autosave_interval;
|
|
#if defined(HAVE_ZLIB)
|
|
bool compress_files = settings->bools.save_file_compression;
|
|
#else
|
|
bool compress_files = false;
|
|
#endif
|
|
|
|
if (autosave_interval < 1 || !task_save_files)
|
|
return false;
|
|
|
|
if (!(list = (autosave_t**)
|
|
calloc(task_save_files->size,
|
|
sizeof(*autosave_state.list))))
|
|
return false;
|
|
|
|
autosave_state.list = list;
|
|
autosave_state.num = (unsigned)task_save_files->size;
|
|
|
|
for (i = 0; i < task_save_files->size; i++)
|
|
{
|
|
retro_ctx_memory_info_t mem_info;
|
|
autosave_t *auto_st = NULL;
|
|
const char *path = task_save_files->elems[i].data;
|
|
unsigned type = task_save_files->elems[i].attr.i;
|
|
|
|
mem_info.id = type;
|
|
|
|
core_get_memory(&mem_info);
|
|
|
|
if (mem_info.size <= 0)
|
|
continue;
|
|
|
|
if (!(auto_st = autosave_new(path,
|
|
mem_info.data,
|
|
mem_info.size,
|
|
autosave_interval,
|
|
compress_files)))
|
|
{
|
|
RARCH_WARN("%s\n", msg_hash_to_str(MSG_AUTOSAVE_FAILED));
|
|
continue;
|
|
}
|
|
|
|
autosave_state.list[i] = auto_st;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void autosave_deinit(void)
|
|
{
|
|
unsigned i;
|
|
|
|
for (i = 0; i < autosave_state.num; i++)
|
|
{
|
|
autosave_t *handle = autosave_state.list[i];
|
|
if (handle)
|
|
{
|
|
autosave_free(handle);
|
|
free(autosave_state.list[i]);
|
|
}
|
|
autosave_state.list[i] = NULL;
|
|
}
|
|
|
|
free(autosave_state.list);
|
|
|
|
autosave_state.list = NULL;
|
|
autosave_state.num = 0;
|
|
}
|
|
|
|
/**
|
|
* autosave_lock:
|
|
*
|
|
* Lock autosave.
|
|
**/
|
|
void autosave_lock(void)
|
|
{
|
|
unsigned i;
|
|
|
|
for (i = 0; i < autosave_state.num; i++)
|
|
{
|
|
autosave_t *handle = autosave_state.list[i];
|
|
if (handle)
|
|
slock_lock(handle->lock);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* autosave_unlock:
|
|
*
|
|
* Unlocks autosave.
|
|
**/
|
|
void autosave_unlock(void)
|
|
{
|
|
unsigned i;
|
|
|
|
for (i = 0; i < autosave_state.num; i++)
|
|
{
|
|
autosave_t *handle = autosave_state.list[i];
|
|
if (handle)
|
|
slock_unlock(handle->lock);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static bool content_get_memory(retro_ctx_memory_info_t *mem_info,
|
|
struct ram_type *ram, unsigned slot)
|
|
{
|
|
ram->type = task_save_files->elems[slot].attr.i;
|
|
ram->path = task_save_files->elems[slot].data;
|
|
mem_info->id = ram->type;
|
|
|
|
core_get_memory(mem_info);
|
|
|
|
if (!mem_info->data || mem_info->size == 0)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* content_load_ram_file:
|
|
* @path : path of RAM state that will be loaded from.
|
|
* @type : type of memory
|
|
*
|
|
* Load a RAM state from disk to memory.
|
|
*/
|
|
static bool content_load_ram_file(unsigned slot)
|
|
{
|
|
int64_t rc;
|
|
struct ram_type ram;
|
|
retro_ctx_memory_info_t mem_info;
|
|
void *buf = NULL;
|
|
|
|
if (!content_get_memory(&mem_info, &ram, slot))
|
|
return false;
|
|
|
|
/* On first run of content, SRAM file will
|
|
* not exist. This is a common enough occurrence
|
|
* that we should check before attempting to
|
|
* invoke the relevant read_file() function */
|
|
if ( string_is_empty(ram.path)
|
|
|| !path_is_valid(ram.path))
|
|
return false;
|
|
|
|
#if defined(HAVE_ZLIB)
|
|
/* Always use RZIP interface when reading SRAM
|
|
* files - this will automatically handle uncompressed
|
|
* data */
|
|
if (!rzipstream_read_file(ram.path, &buf, &rc))
|
|
#else
|
|
if (!filestream_read_file(ram.path, &buf, &rc))
|
|
#endif
|
|
return false;
|
|
|
|
if (rc > 0)
|
|
{
|
|
if (rc > (ssize_t)mem_info.size)
|
|
{
|
|
RARCH_WARN("[SRAM]: SRAM is larger than implementation expects, "
|
|
"doing partial load (truncating %u %s %s %u).\n",
|
|
(unsigned)rc,
|
|
msg_hash_to_str(MSG_BYTES),
|
|
msg_hash_to_str(MSG_TO),
|
|
(unsigned)mem_info.size);
|
|
rc = mem_info.size;
|
|
}
|
|
memcpy(mem_info.data, buf, (size_t)rc);
|
|
}
|
|
|
|
if (buf)
|
|
free(buf);
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* dump_to_file_desperate:
|
|
* @data : pointer to data buffer.
|
|
* @size : size of @data.
|
|
* @type : type of file to be saved.
|
|
*
|
|
* Attempt to save valuable RAM data somewhere.
|
|
**/
|
|
static bool dump_to_file_desperate(const void *data,
|
|
size_t size, unsigned type)
|
|
{
|
|
char path[PATH_MAX_LENGTH + 256 + 32];
|
|
path [0] = '\0';
|
|
|
|
if (fill_pathname_application_data(path,
|
|
sizeof(path)))
|
|
{
|
|
size_t _len;
|
|
time_t time_;
|
|
struct tm tm_;
|
|
char timebuf[256];
|
|
timebuf [0] = '\0';
|
|
time(&time_);
|
|
|
|
rtime_localtime(&time_, &tm_);
|
|
|
|
strftime(timebuf, 256 * sizeof(char),
|
|
"%Y-%m-%d-%H-%M-%S", &tm_);
|
|
|
|
_len = strlcat(path, "/RetroArch-recovery-", sizeof(path));
|
|
|
|
snprintf(path + _len, sizeof(path) - _len,
|
|
"%u%s", type, timebuf);
|
|
|
|
/* Fallback (emergency) saves are always
|
|
* uncompressed
|
|
* > If a regular save fails, then the host
|
|
* system is experiencing serious technical
|
|
* difficulties (most likely some kind of
|
|
* hardware failure)
|
|
* > In this case, we don't want to further
|
|
* complicate matters by introducing zlib
|
|
* compression overheads */
|
|
if (filestream_write_file(path, data, size))
|
|
{
|
|
RARCH_WARN("[SRAM]: Succeeded in saving RAM data to \"%s\".\n", path);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* content_save_ram_file:
|
|
* @path : path of RAM state that shall be written to.
|
|
* @type : type of memory
|
|
*
|
|
* Save a RAM state from memory to disk.
|
|
*
|
|
*/
|
|
static bool content_save_ram_file(unsigned slot, bool compress)
|
|
{
|
|
struct ram_type ram;
|
|
retro_ctx_memory_info_t mem_info;
|
|
|
|
if (!content_get_memory(&mem_info, &ram, slot))
|
|
return false;
|
|
|
|
RARCH_LOG("[SRAM]: %s #%u %s \"%s\".\n",
|
|
msg_hash_to_str(MSG_SAVING_RAM_TYPE),
|
|
ram.type,
|
|
msg_hash_to_str(MSG_TO),
|
|
ram.path);
|
|
|
|
#if defined(HAVE_ZLIB)
|
|
if (compress)
|
|
{
|
|
if (!rzipstream_write_file(
|
|
ram.path, mem_info.data, mem_info.size))
|
|
goto fail;
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
if (!filestream_write_file(
|
|
ram.path, mem_info.data, mem_info.size))
|
|
goto fail;
|
|
}
|
|
|
|
RARCH_LOG("[SRAM]: %s \"%s\".\n",
|
|
msg_hash_to_str(MSG_SAVED_SUCCESSFULLY_TO),
|
|
ram.path);
|
|
|
|
return true;
|
|
|
|
fail:
|
|
RARCH_ERR("[SRAM]: %s.\n",
|
|
msg_hash_to_str(MSG_FAILED_TO_SAVE_SRAM));
|
|
RARCH_WARN("[SRAM]: Attempting to recover ...\n");
|
|
|
|
/* In case the file could not be written to,
|
|
* the fallback function 'dump_to_file_desperate'
|
|
* will be called. */
|
|
if (!dump_to_file_desperate(
|
|
mem_info.data, mem_info.size, ram.type))
|
|
RARCH_WARN("[SRAM]: Failed ... Cannot recover save file.\n");
|
|
return false;
|
|
}
|
|
|
|
bool event_save_files(bool is_sram_used)
|
|
{
|
|
unsigned i;
|
|
settings_t *settings = config_get_ptr();
|
|
#ifdef HAVE_CHEATS
|
|
const char *path_cheat_database = settings->paths.path_cheat_database;
|
|
#endif
|
|
#if defined(HAVE_ZLIB)
|
|
bool compress_files = settings->bools.save_file_compression;
|
|
#else
|
|
bool compress_files = false;
|
|
#endif
|
|
|
|
#ifdef HAVE_CHEATS
|
|
cheat_manager_save_game_specific_cheats(
|
|
path_cheat_database);
|
|
#endif
|
|
if (!task_save_files || !is_sram_used)
|
|
return false;
|
|
|
|
for (i = 0; i < task_save_files->size; i++)
|
|
{
|
|
content_save_ram_file(i, compress_files);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool event_load_save_files(bool is_sram_load_disabled)
|
|
{
|
|
unsigned i;
|
|
bool success = false;
|
|
|
|
if (!task_save_files || is_sram_load_disabled)
|
|
return false;
|
|
|
|
/* Report a successful load operation if
|
|
* any type of RAM file is found and
|
|
* processed correctly */
|
|
for (i = 0; i < task_save_files->size; i++)
|
|
success |= content_load_ram_file(i);
|
|
|
|
return success;
|
|
}
|
|
|
|
void path_init_savefile_rtc(const char *savefile_path)
|
|
{
|
|
union string_list_elem_attr attr;
|
|
char savefile_name_rtc[PATH_MAX_LENGTH];
|
|
|
|
attr.i = RETRO_MEMORY_SAVE_RAM;
|
|
string_list_append(task_save_files, savefile_path, attr);
|
|
|
|
/* Infer .rtc save path from save RAM path. */
|
|
attr.i = RETRO_MEMORY_RTC;
|
|
fill_pathname(savefile_name_rtc,
|
|
savefile_path, ".rtc",
|
|
sizeof(savefile_name_rtc));
|
|
string_list_append(task_save_files, savefile_name_rtc, attr);
|
|
}
|
|
|
|
void path_deinit_savefile(void)
|
|
{
|
|
if (task_save_files)
|
|
string_list_free(task_save_files);
|
|
task_save_files = NULL;
|
|
}
|
|
|
|
void path_init_savefile_new(void)
|
|
{
|
|
task_save_files = string_list_new();
|
|
}
|
|
|
|
void *savefile_ptr_get(void)
|
|
{
|
|
return task_save_files;
|
|
}
|
|
|