/// <summary>
/// Creates a new profiler using a process start info of an executable and a data writer.
/// </summary>
public Profiler(ProcessStartInfo info, IProfilingDataWriter dataWriter, ProfilerOptions options)
{
if (dataWriter == null)
{
throw new ArgumentNullException("dataWriter");
}
if (info == null)
{
throw new ArgumentNullException("info");
}
if (!DetectBinaryType.IsDotNetExecutable(info.FileName))
{
throw new ProfilerException("File is not a valid .NET executable file!");
}
this.profilerOptions = options;
this.is64Bit = DetectBinaryType.RunsAs64Bit(info.FileName);
this.profilerOutput = new StringBuilder();
this.performanceCounters = options.Counters;
foreach (var counter in performanceCounters)
{
counter.Reset();
}
this.dataWriter = dataWriter;
this.threadListMutex = new Mutex(false, MutexId);
this.accessEventHandle = new EventWaitHandle(true, EventResetMode.ManualReset, this.AccessEventId);
this.psi = info;
this.psi.UseShellExecute = false; // needed to get env vars working!
this.psi.EnvironmentVariables["SharedMemoryName"] = SharedMemoryId;
this.psi.EnvironmentVariables["MutexName"] = MutexId; // mutex for process pause/continue sychronization
this.psi.EnvironmentVariables["AccessEventName"] = AccessEventId; // name for access event of controller
this.psi.EnvironmentVariables["COR_ENABLE_PROFILING"] = "1"; // enable profiling; 0 = disable
this.psi.EnvironmentVariables["COR_PROFILER"] = ProfilerGuid; // GUID for the profiler
this.psi.EnvironmentVariables["COMPLUS_ProfAPI_ProfilerCompatibilitySetting"] = "EnableV2Profiler"; // enable CLR 2.0 for CLR 4.0
file = MemoryMappedFile.CreateSharedMemory(SharedMemoryId, profilerOptions.SharedMemorySize);
fullView = file.MapView(0, profilerOptions.SharedMemorySize);
this.dataWriter.ProcessorFrequency = GetProcessorFrequency();
this.logger = new Thread(new ParameterizedThreadStart(Logging));
this.logger.Name = "Logger";
this.logger.IsBackground = true; // don't let the logger thread prevent our process from exiting
this.dataCollector = new Thread(new ThreadStart(DataCollection));
this.dataCollector.Name = "DataCollector";
this.dataCollector.IsBackground = true;
}
public void WriteAndReadFromBufferUsingMemoryMappedFile()
{
using (MemoryMappedFile mmf1 = MemoryMappedFile.CreateSharedMemory("Local\\TestMemory", 1024)) {
using (UnmanagedMemory view1 = mmf1.MapView(0, 1024)) {
using (UnmanagedCircularBuffer ncb = UnmanagedCircularBuffer.Create(view1.Start, (int)view1.Length)) {
using (Stream ws = ncb.CreateWritingStream()) {
ws.WriteByte(0x42);
}
using (MemoryMappedFile mmf2 = MemoryMappedFile.Open("Local\\TestMemory")) {
using (UnmanagedMemory view2 = mmf1.MapView(0, 1024)) {
Assert.AreNotEqual(view1.Start, view2.Start);
using (UnmanagedCircularBuffer ncb2 = UnmanagedCircularBuffer.Open(view2.Start)) {
using (Stream rs = ncb2.CreateReadingStream()) {
Assert.AreEqual(0x42, rs.ReadByte());
}
}
}
}
}
}
}
}