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Only autosave when the data actually changed.

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This commit is contained in:
Themaister 2011-09-17 10:57:55 +02:00
parent 38e7fc6659
commit efe3f943d5
2 changed files with 24 additions and 16 deletions
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38
autosave.c
View File

@ -48,26 +48,33 @@ static int autosave_thread(void *data)
while (!save->quit)
{
autosave_lock(save);
memcpy(save->buffer, save->snes_buffer, save->bufsize);
bool differ = memcmp(save->buffer, save->snes_buffer, save->bufsize) != 0;
if (differ)
memcpy(save->buffer, save->snes_buffer, save->bufsize);
autosave_unlock(save);
// Should probably deal with this more elegantly.
FILE *file = fopen(save->path, "wb");
if (file)
if (differ)
{
// Avoid spamming down stderr ... :)
if (first_log)
// Should probably deal with this more elegantly.
FILE *file = fopen(save->path, "wb");
if (file)
{
SSNES_LOG("Autosaving SRAM to \"%s\", will continue to autosave every %u seconds ...\n", save->path, save->interval);
first_log = false;
}
// Avoid spamming down stderr ... :)
if (first_log)
{
SSNES_LOG("Autosaving SRAM to \"%s\", will continue to check every %u seconds ...\n", save->path, save->interval);
first_log = false;
}
else
SSNES_LOG("SRAM changed ... autosaving ...\n");
bool failed = false;
failed |= fwrite(save->buffer, 1, save->bufsize, file) != save->bufsize;
failed |= fflush(file) != 0;
failed |= fclose(file) != 0;
if (failed)
SSNES_WARN("Failed to autosave SRAM! Disk might be full.\n");
bool failed = false;
failed |= fwrite(save->buffer, 1, save->bufsize, file) != save->bufsize;
failed |= fflush(file) != 0;
failed |= fclose(file) != 0;
if (failed)
SSNES_WARN("Failed to autosave SRAM! Disk might be full.\n");
}
}
SDL_mutexP(save->cond_lock);
@ -96,6 +103,7 @@ autosave_t *autosave_new(const char *path, const void *data, size_t size, unsign
free(handle);
return NULL;
}
memcpy(handle->buffer, handle->snes_buffer, handle->bufsize);
handle->lock = SDL_CreateMutex();
handle->cond_lock = SDL_CreateMutex();

2
ssnes.c
View File

@ -1619,7 +1619,7 @@ int main(int argc, char *argv[])
#endif
// Main loop
for(;;)
for (;;)
{
// DSP plugin GUI events.
if (g_extern.audio_data.dsp_handle && g_extern.audio_data.dsp_plugin->events)