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fix Linux memcard flushing

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This commit is contained in:
Chris Danford
2004-03-27 03:05:12 +00:00
parent aada5a8a91
commit 7088c0eb28
1 changed files with 6 additions and 5 deletions
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stepmania/src/arch/MemoryCard/MemoryCardDriver_Linux.cpp
+6 -5
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@@ -119,7 +119,7 @@ MemoryCardDriver_Linux::MemoryCardDriver_Linux() :
m_bStorageDevicesChanged = false; m_bStorageDevicesChanged = false;
MountThread.SetName("MemCard Mount thread"); MountThread.SetName("MemCard Mount thread");
MountThread.Create( MountThread_Start, this ); MountThread.Create( MountThread_Start, this );
} }
MemoryCardDriver_Linux::~MemoryCardDriver_Linux() MemoryCardDriver_Linux::~MemoryCardDriver_Linux()
@@ -377,17 +377,18 @@ void MemoryCardDriver_Linux::Flush( UsbStorageDevice* pDevice )
if( pDevice->sOsMountDir.empty() ) if( pDevice->sOsMountDir.empty() )
return; return;
// unmount and mount again. Is there a better way to flush?
// "sync" will only flush all file systems at the same time. -Chris // "sync" will only flush all file systems at the same time. -Chris
// I don't think so. Also, sync() merely queues a flush; it doesn't guarantee // I don't think so. Also, sync() merely queues a flush; it doesn't guarantee
// that the flush is completed on return. However, we can mount the filesystem // that the flush is completed on return. However, we can mount the filesystem
// with the flag "-o sync", which forces synchronous access (but that's probably // with the flag "-o sync", which forces synchronous access (but that's probably
// very slow.) -glenn // very slow.) -glenn
CString sCommand = "umount " + pDevice->sOsMountDir; // Strangely, "-o sync" doesn't seem to force the data to be written to a USB
// pen drive. I see can see that SM wrote the files correctly, but if I unplug
// without sync'ing or umount'ing, then the files are lost. Maybe usb-strorage
// doesn't play nicely with -o sync?
CString sCommand = "sync";
LOG->Trace( "executing '%s'", sCommand.c_str() ); LOG->Trace( "executing '%s'", sCommand.c_str() );
system( sCommand ); system( sCommand );
sCommand = "mount " + pDevice->sOsMountDir;
system( sCommand );
} }
void MemoryCardDriver_Linux::ResetUsbStorage() void MemoryCardDriver_Linux::ResetUsbStorage()