public LibsnesApi(string dllPath)
{
InstanceName = "libsneshawk_" + Guid.NewGuid().ToString();
var pipeName = InstanceName;
mmf = MemoryMappedFile.CreateNew(pipeName, 1024 * 1024);
mmva = mmf.CreateViewAccessor();
mmva.SafeMemoryMappedViewHandle.AcquirePointer(ref mmvaPtr);
pipe = new NamedPipeServerStream(pipeName, PipeDirection.InOut, 1, PipeTransmissionMode.Byte, PipeOptions.None, 1024 * 1024, 1024);
instanceDll = new InstanceDll(dllPath);
var dllinit = (DllInit)Marshal.GetDelegateForFunctionPointer(instanceDll.GetProcAddress("DllInit"), typeof(DllInit));
dllinit(pipeName);
//TODO - start a thread to wait for process to exit and gracefully handle errors? how about the pipe?
pipe.WaitForConnection();
rbuf = new IPCRingBuffer();
wbuf = new IPCRingBuffer();
rbuf.Allocate(1024);
wbuf.Allocate(1024);
rbufstr = new IPCRingBufferStream(rbuf);
wbufstr = new IPCRingBufferStream(wbuf);
rstream = new SwitcherStream();
wstream = new SwitcherStream();
rstream.SetCurrStream(pipe);
wstream.SetCurrStream(pipe);
brPipe = new BinaryReader(rstream);
bwPipe = new BinaryWriter(wstream);
WritePipeMessage(eMessage.eMessage_SetBuffer);
bwPipe.Write(1);
WritePipeString(rbuf.Id);
WritePipeMessage(eMessage.eMessage_SetBuffer);
bwPipe.Write(0);
WritePipeString(wbuf.Id);
bwPipe.Flush();
}
public LibsnesApi(string exePath)
{
//make sure we've checked this exe for OKness.. the dry run should keep us from freezing up or crashing weirdly if the external process isnt correct
if (!okExes.Contains(exePath))
{
bool ok = DryRun(exePath);
if (!ok)
throw new InvalidOperationException(string.Format("Couldn't launch {0} to run SNES core. Not sure why this would have happened. Try redownloading BizHawk first.", Path.GetFileName(exePath)));
okExes.Add(exePath);
}
InstanceName = "libsneshawk_" + Guid.NewGuid().ToString();
#if DEBUG
//use this to get a debug console with libsnes output
InstanceName = "console-" + InstanceName;
#endif
var pipeName = InstanceName;
mmf = MemoryMappedFile.CreateNew(pipeName, 1024 * 1024);
mmva = mmf.CreateViewAccessor();
mmva.SafeMemoryMappedViewHandle.AcquirePointer(ref mmvaPtr);
pipe = new NamedPipeServerStream(pipeName, PipeDirection.InOut, 1, PipeTransmissionMode.Byte, PipeOptions.None, 1024 * 1024, 1024);
//slim chance this might be useful sometimes:
//http://stackoverflow.com/questions/2590334/creating-a-cross-process-eventwaithandle
//create an event for the child process to monitor with a watchdog, to make sure it terminates when the emuhawk process terminates.
//NOTE: this is alarming! for some reason .net releases this event when it gets finalized, instead of when i (dont) dispose it.
bool createdNew;
watchdogEvent = new System.Threading.EventWaitHandle(false, System.Threading.EventResetMode.AutoReset, InstanceName + "-event", out createdNew);
process = new Process();
process.StartInfo.WorkingDirectory = Path.GetDirectoryName(exePath);
process.StartInfo.FileName = exePath;
process.StartInfo.Arguments = pipeName;
process.StartInfo.ErrorDialog = true;
process.Start();
//TODO - start a thread to wait for process to exit and gracefully handle errors? how about the pipe?
pipe.WaitForConnection();
rbuf = new IPCRingBuffer();
wbuf = new IPCRingBuffer();
rbuf.Allocate(1024);
wbuf.Allocate(1024);
rbufstr = new IPCRingBufferStream(rbuf);
wbufstr = new IPCRingBufferStream(wbuf);
rstream = new SwitcherStream();
wstream = new SwitcherStream();
rstream.SetCurrStream(pipe);
wstream.SetCurrStream(pipe);
brPipe = new BinaryReader(rstream);
bwPipe = new BinaryWriter(wstream);
WritePipeMessage(eMessage.eMessage_SetBuffer);
bwPipe.Write(1);
WritePipeString(rbuf.Id);
WritePipeMessage(eMessage.eMessage_SetBuffer);
bwPipe.Write(0);
WritePipeString(wbuf.Id);
bwPipe.Flush();
}